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WO2018000587A1 - Système de raffinage de magnésium sous vide a four à arc électrique, four à induction sous vide et procédé de raffinage de magnésium associé - Google Patents

Système de raffinage de magnésium sous vide a four à arc électrique, four à induction sous vide et procédé de raffinage de magnésium associé Download PDF

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Publication number
WO2018000587A1
WO2018000587A1 PCT/CN2016/099112 CN2016099112W WO2018000587A1 WO 2018000587 A1 WO2018000587 A1 WO 2018000587A1 CN 2016099112 W CN2016099112 W CN 2016099112W WO 2018000587 A1 WO2018000587 A1 WO 2018000587A1
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Prior art keywords
vacuum
magnesium
furnace
valve
liquid
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English (en)
Chinese (zh)
Inventor
狄保法
樊道卿
狄凌飞
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Priority claimed from CN201610498925.2A external-priority patent/CN105970004B/zh
Priority claimed from CN201620666348.9U external-priority patent/CN206089779U/zh
Priority claimed from CN201610496951.1A external-priority patent/CN105950889B/zh
Application filed by Individual filed Critical Individual
Publication of WO2018000587A1 publication Critical patent/WO2018000587A1/fr
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
    • C22B26/20—Obtaining alkaline earth metals or magnesium
    • C22B26/22—Obtaining magnesium

Definitions

  • the invention relates to a metal smelting system and a method thereof, in particular to a vacuum induction furnace, an electric arc furnace vacuum magnesium smelting system and a magnesium smelting method thereof with high yield, low cost and less environmental pollution.
  • Magnesium is a metal element with abundant reserves in the earth, accounting for 2.1%---2.7% of the total mass of the earth. China's reserves are the largest reserves of magnesium resources in the world. At present, tens of billions of tons have been proven. Magnesium and magnesium alloys have small specific gravity, high strength, good shock absorption, good impact resistance, good machinability, good thermal conductivity, recycling and recycling, less environmental pollution, excellent environmental and performance advantages, and a wide range of applications. It is a rare metal that can be recycled. Vigorously developing the magnesium industry has obvious resource advantages and market advantages in China and the world.
  • magnesium production methods mainly include magnesium chloride molten salt electrolysis and thermal reduction.
  • 85% of the global magnesium production is produced by the metal reduction method in the thermal reduction method, namely the “Pijiang Law”.
  • the thermal reduction method produces the “Pijiang method” in the metal reduction method as an example, and there are many shortcomings in current production. 1 large thermal radiation radius, large heat loss, serious environmental pollution, long-term reduction time of 12-14 hours; 2 all manual operation, on-site workers with high labor intensity and low efficiency; 3 high production cost, mainly high energy consumption, high cost of reduction tank The yield is low and the economic benefits are not satisfactory. 4 It is impossible to form large-scale continuous production, which does not meet the requirements of modern large-scale industrial development.
  • the prior art "Pijiang Method” production process mainly uses calcined dolomite as a raw material, ferrosilicon as a reducing agent, and fluorite as a catalyst for metering and batching. After grinding, it is pressed into a ball, called a pellet. The pellet was charged into a reduction tank, heated to 1200 ° C, and internally evacuated to 13.3 Pa or higher to generate magnesium vapor. Magnesium vapor forms crystalline magnesium in the condenser at the front end of the reduction tank, also known as crude magnesium. After refining with a flux, a commercial magnesium ingot, that is, refined magnesium, is produced.
  • Pijiang Process Magnesium Production Process Pijiang Process Magnesium Production Process (1) Dolomite Calcination: Dolomite is heated to 1100-1200 ° C in a rotary kiln or shaft kiln, and calcined white (MgO ⁇ CaO). (2) Ingredient ball making: The calcined white, ferrosilicon powder and fluorite powder are metered, ground, and then pressed into balls. (3) Reduction: The pellet is heated to 1200 + 10 ° C in a reduction tank, and maintained under a vacuum of 13.3 Pa or higher for 8 to 10 hours, and the magnesium oxide is reduced to magnesium vapor, and after condensation, it becomes crude magnesium.
  • Refining ingot The crude magnesium is heated and melted, and refined at a high temperature of about 710 ° C, and then refined into a magnesium ingot, also called fine magnesium.
  • Pickling The magnesium ingot is washed with sulfuric acid or nitric acid to remove surface inclusions to make the surface beautiful.
  • Gas-making workshop Convert raw coal into gas and use it as fuel. There is no gas plant in the magnesium plant that uses raw coal directly.
  • the Chinese patent application No. 95100495.6 in the prior art is called a new process of silicon-thermal reduction vacuum magnesium smelting of electric furnace hot charging material, and inherits the "Pijiang method” magnesium with ferrosilicon as a reducing agent, and can be reduced under heat.
  • the core theory of magnesium the "Pi Jiang Law.”
  • the present invention provides a direct condition for making it more continuous production, and can fully utilize the metal magnesium raw material from decomposition heating, thereby achieving high yield, low cost, and less environmental pollution.
  • a vacuum induction furnace magnesium smelting system characterized in that the system comprises a grinding system, a preheating decomposition system, a calcining system, a secondary heating system, a vacuum reaction system, a condensation collecting system, and a vacuum reaction system, which are sequentially connected
  • a slag collecting system is disposed on the condensing collecting system, wherein the condensing collecting system is provided with a dust collecting and collecting system;
  • the grinding system comprises a crusher, a storage tank, a first hoist, a grinding head stable silo, a vertical mill, a separator, a first dust remover, a second hoist, a first storage tank, and a separation.
  • the device is connected to the upper part of the vertical mill, and is connected in series with the first dust collector and the first exhaust fan, and penetrates with the product outlet, and the first induced draft fan is connected to the bottom of the vertical mill;
  • the preheating decomposition system comprises a bucket elevator connected by a round pipe metering reamer and a first stock magazine in the grinding system, and further comprises a feeding screw conveyor and a four-stage preheating which are sequentially connected with the bucket elevator.
  • the decomposition tower, the cyclone dust collector and the four-stage preheating decomposition tower are connected in parallel on the feeding screw conveyor, the upper part of the cyclone dust collector is connected with a blower, the lower end is connected with the second exhaust fan, the blower is provided with an exhaust chimney, and the cyclone dust collector a return reamer is arranged at the discharge opening;
  • the calcining system comprises a rotary kiln which is continuous with the four-stage preheating decomposition tower.
  • the rear combustion chamber of the rotary kiln is provided with a gas injection gun and is connected with the air blower.
  • the gas used for the gas injection gun is provided by the remote gas storage tank, and is rotated.
  • the kiln end of the kiln is provided with a conveyor for conveying materials, one end of the conveyor is connected to the third hoist, the other end is provided with a front cooling fan, and the third hoist is connected to the second storage hopper;
  • the secondary heating system comprises a heating tank connected to the second storage tank through a "Z" shaped squeegee conveyor, a hot blast stove connected to the heating tank, a second storage sump and a heating tank are connected to the first through the pipeline
  • the heating tank tail is connected to the vacuum reaction system through the feeding valve and the feeding pipe;
  • the vacuum reaction system comprises a vacuum induction furnace connected to a heating tank in a secondary heating system through a conveying pipe and a powder blowing gun, a ferrosilicon liquid package placed in the vacuum induction furnace, and a vacuum furnace upper cover, the vacuum induction furnace From the outside to the inside, the induction coil, the insulation layer, the ferrosilicon liquid package, the vacuum reaction chamber, the ferrosilicon liquid package contains the ferrosilicon liquid, and the vacuum furnace upper cover is arranged on the lifting device, and the vacuum furnace upper cover is provided with The feeding port and the detecting port, the powder blowing gun penetrates from the feeding port into the silicon iron liquid bag, and the powder blowing gun communicates with the peripheral argon blowing valve, and penetrates with the conveying pipe and the feeding valve. A check valve is installed between the argon blowing valve and the powder blowing gun;
  • the slag collecting system comprises a slag collecting device connected with a silicon iron liquid bag in a vacuum reaction system through a closed type slag port, and a lower part of the slag collecting device and the vacuum induction furnace are provided with a translation device;
  • the condensing collection system comprises a primary cooling device connected to a vacuum induction furnace in a vacuum reaction system through a magnesium vapor delivery cylinder, a dust removal device sequentially connected to the primary cooling device, a magnesium vapor carrying device, a magnesium vapor condensation collecting device, and a metal a magnesium liquid tank, wherein the magnesium vapor condensation collecting device is connected with a third dust remover of the dust collecting and collecting system, and the third dust remover is connected to the dust collecting set by a vacuum pumping device and an argon gas purifying and collecting device in sequence The argon gas tank of the gas system.
  • the discharge port of the first storage in the grinding system is provided with a regulating shutter, and the discharge port of the grinding head stabilization bin is connected to the vertical mill through an electronic belt scale.
  • the second stock storage outlet is provided with a bottom regulating valve, a feeding valve is arranged at the heating tank discharge port, a second induced draft fan is connected to the heating tank, and the second dust collector is connected with the second Three rows of fans.
  • the inlet of the argon gas storage tank is provided with an intake valve
  • the outlet is provided with an argon gas output valve
  • the magnesium magnesium liquid tank is provided with a magnesium liquid discharge port
  • the bottom of the third dust remover is provided with an automatic air lock line Dust valve.
  • the invention also discloses a vacuum induction furnace magnesium smelting method, which is characterized in that it comprises three stages of pre-preparation, induction furnace vacuum magnesium smelting and end opening and closing;
  • the pre-preparation phase includes:
  • Step 1 Prepare the reactants - magnesium ore containing powder:
  • Calcination Preheating in the four-stage decomposition preheating tower
  • the decomposition material is slid into the rotary kiln for calcination, causing the calcium carbonate to overflow, forming a forged white powder containing 40% to 46% of magnesium oxide (mainly composed of Mgo, Cao), and transporting the forged white powder to the third storage tank through the third hoist Medium storage, 4, heating: the forged white powder in the third storage tank is transported to the heating tank through the “Z” type buried scraper conveyor, and then reheated to 900 ° C ⁇ 150 ° C, temporarily stored for use;
  • Step 2 Prepare the reaction solvent - pre-melting ferrosilicon alloy liquid: In the equipped vacuum induction furnace, about 75% of ferrosilicon is metered according to the capacity and proportion, and melted into ferrosilicon liquid, at 1200 ° C - 1650 ° C Insulation for use;
  • the induction furnace vacuum magnesium smelting stage comprises:
  • Step 3 vacuum induction furnace vacuuming: respectively start the base induction device of the vacuum induction furnace and the slag collection device, make it docked in place, then activate the lifting device of the vacuum furnace upper cover, cover the vacuum furnace upper cover, and make the vacuum reaction
  • the chamber and the upper cover of the vacuum furnace are completely sealed and firmly, and then vacuumed by a vacuuming device, and the vacuum pressure value is 100-12000Pa;
  • Step 4 Filling with argon gas: open the argon blowing valve, backfill the argon gas into the vacuum reaction chamber after vacuuming in step three, and turn on the vacuum induction furnace heating system to make the molten iron boil and keep the temperature at the same time through the detection port and the high temperature camera. 1200-1650 ° C, and the argon gas is fully filled;
  • Step 5 Adding a reactant: inserting a powder injection gun into the ferrosilicon liquid from the top of the upper cover of the vacuum furnace, and mixing the argon gas into the ferrosilicon liquid to spray the heated magnesium ore powder; the argon gas is blown
  • the mechanism of action and electromagnetic stirring enables the magnesium ore powder and the ferrosilicon liquid to be thoroughly stirred and mixed, and the displacement reduction reaction occurs under the vacuum state and the controlled range of high temperature to generate magnesium vapor;
  • Step 6 Cooling collection: The magnesium vapor produced in step 5 is transported through the magnesium vapor transport cylinder in the vacuum direction, cooled by the first-stage cooling device, and discharged into the magnesium vapor carrying device after the dust collector is removed, and then flows into the magnesium with temperature control at 600 ⁇ 50°C.
  • the magnesium liquid (or dripping) stream obtained in the magnesium vapor condensation trapping device is dropped (dropped) into the metal magnesium liquid tank, and is to be ingot or refined, used in vacuum high temperature smelting.
  • the argon gas is sent to the argon gas storage tank through the third dust collector and sent to the argon gas purifying and collecting device by the vacuum pumping device;
  • Step 7 clearing the slag: after the reduction reaction is completed, the slag collecting device collecting the slag liquid is displaced, then poured out, and then the slag collecting device is reset;
  • Step 8 Perform the next round of operation according to the steps from step two to step seven, and rotate the work in turn;
  • the end of the shutdown phase includes:
  • Step 9 After the reaction of the vacuum reaction chamber is finished, the powder injection gun is sequentially closed and lifted; the argon blowing valve, the induction furnace heating device, the vacuum suction device and the dust removal device, the third dust collector, and the argon output are sequentially closed.
  • the valve does not cause secondary recirculation of the collected gas;
  • Step 10 When the pressure of the vacuum reaction chamber is balanced with the atmosphere from the detecting instrument, the lifting device and the translation device are respectively activated to separate the vacuum reaction chamber from the upper cover of the vacuum furnace.
  • the vacuum induction furnace magnesium smelting system and the magnesium smelting method thereof provided by the invention use 40%--75% of ferrosilicon containing silicon, the temperature is 1200 ° C - 1650 ° C, and is pre-melted. Sealing, opening the pumping equipment to form a vacuum, first filling the container with argon gas, and after the argon gas is saturated, start to spray 700 °C---1000 °C content into the ferrosilicon liquid package. ---80% containing magnesium ore, in full In the boiling environment of argon, the magnesium ore powder and the ferrosilicon solution are subjected to a reduction reaction with a vacuum of 100---12000 Pa.
  • the reacted magnesium vapor passes through a magnesium vapor carrying device, passes through a magnesium steam chiller, and is cooled to form a magnesium liquid, and then
  • the magnesium liquid receiving device is sent to the magnesium liquid refining station for refining pouring or directly producing other products, and the argon gas is purified and treated by the cooling dust removing device, and the gas discharged after the dust removing device is treated without any environmental pollution.
  • the production process of the invention is reasonable, compact, matched with equipment, complete in process, fast in reaction process, short in time, high in production efficiency, and can reduce production cost by more than 1/3.
  • the present invention further provides another technical solution:
  • An electric arc furnace vacuum magnesium smelting system characterized in that the system comprises a grinding system, a preheating decomposition system, a calcining system, a secondary heating system, a vacuum reaction system, a condensation collecting system, a condensing collecting system, which are sequentially connected There is a dust collection and collection system;
  • the grinding system comprises a crusher, a storage tank, a first hoist, a grinding head stable silo, a vertical mill, a separator, a first dust remover, a second hoist, a first storage tank, and a separation.
  • the device is connected to the upper part of the vertical mill, and is connected in series with the first dust collector and the first exhaust fan, and penetrates with the product outlet, and the first induced draft fan is connected to the bottom of the vertical mill;
  • the preheating decomposition system comprises a bucket elevator connected by a round pipe metering reamer and a first stock magazine in the grinding system, and further comprises a feeding screw conveyor and a four-stage preheating which are sequentially connected with the bucket elevator.
  • the decomposition tower, the cyclone dust collector and the four-stage preheating decomposition tower are connected in parallel on the feeding screw conveyor, the upper part of the cyclone dust collector is connected with a blower, the lower end is connected with the second exhaust fan, the blower is provided with an exhaust chimney, and the cyclone dust collector a return reamer is arranged at the discharge opening;
  • the calcining system comprises a rotary kiln which is continuous with the four-stage preheating decomposition tower.
  • the rear combustion chamber of the rotary kiln is provided with a gas injection gun and is connected with the air blower.
  • the gas used for the gas injection gun is provided by the remote gas storage tank, and is rotated.
  • the kiln end of the kiln is provided with a conveyor for conveying materials, one end of the conveyor is connected to the third hoist, the other end is provided with a front cooling fan, and the third hoist is connected to the second storage hopper;
  • the secondary heating system comprises a heating tank connected to the second storage tank through a "Z" shaped squeegee conveyor, a hot blast stove connected to the heating tank, a second storage sump and a heating tank are connected to the first through the pipeline
  • the heating tank tail is connected to the vacuum reaction system through the feeding valve and the feeding pipe;
  • the vacuum reaction system comprises a vacuum arc furnace connected to a heating tank in a secondary heating system through a feed pipe and a powder blowing gun, a pre-melted silicon iron liquid package placed in the vacuum electric arc furnace, and a vacuum furnace upper cover.
  • a heating electrode device and a ferrosilicon alloy feeding port which is an outer furnace body, an insulation brick, a vacuum reaction chamber, and a pre-melted silicon iron liquid from the outside to the inside.
  • the upper cover of the vacuum furnace is arranged on the lifting device, and the upper surface of the vacuum furnace is provided with an electrode heating device, and the slag discharge port of the vacuum electric arc furnace is provided with slag discharging a rotary moving device is disposed between the valve, the vacuum arc furnace and the ferrosilicon liquid package, and a bottom of the vacuum arc furnace is provided with a translating device, and the powder injection gun penetrates from the sidewall of the vacuum arc furnace into the ferrosilicon liquid, the material
  • the powder blowing gun is connected with the peripheral argon blowing valve, and is connected with the feeding pipe and the feeding valve, and a check valve is installed between the argon blowing valve and the powder injection gun;
  • the condensing collection system comprises a magnesium steam concentrating carrier connected to a vacuum furnace upper cover in a vacuum reaction system through a magnesium vapor conveying cylinder, a check valve sequentially connected to the magnesium steam concentrating carrier, a magnesium vapor condensing and collecting device, and a magnesium liquid a collecting tank, a third dust remover of the dust collecting and collecting system is connected to the upper portion of the magnesium steam condensing and collecting device, and a vacuum pumping device and a cold water atomizer are arranged at the top of the third dust collector, and the vacuum pumping device is purified by argon gas
  • the trapping device is connected to the argon gas storage tank, and the louver is staggered inside the third dust collector.
  • the discharge port of the first storage in the grinding system is provided with an adjustment gate, and the discharge port of the grinding head stabilization bin is connected to the vertical mill through an electronic belt scale.
  • the discharge port of the second storage tank is provided with a bottom regulating valve, a feeding valve is arranged at the discharging port of the heating tank, a second induced draft fan is connected to the heating tank, and a third row is connected to the second dust removing device. Fan.
  • the inlet of the argon gas storage tank is provided with an intake valve
  • the outlet is provided with an argon gas output valve
  • the argon gas storage tank is provided with a safety valve
  • the magnesium liquid collection tank is provided with a magnesium liquid discharge port
  • the bottom of the third dust collector is provided with an automatic air lock dust valve.
  • the invention also discloses an electric arc furnace vacuum magnesium smelting method, which is characterized in that it comprises three stages of pre-preparation, electric arc furnace vacuum magnesium smelting and end opening and closing;
  • the pre-preparation phase includes:
  • Step 1 Prepare the reactants - magnesium ore containing powder:
  • Calcination Preheating in the four-stage decomposition preheating tower The decomposition material slips into the rotary kiln Calcination, causing calcium carbonate to overflow, forming a forging white powder containing 40% to 46% of magnesium oxide (main component is Mgo, Cao), and transporting the forged white powder to the third storage tank through the third hoist, 4, heating : The forged white powder in the third storage silo is transported to the heating tank through the “Z” type buried scraper conveyor, and is further heated to 900 ° C ⁇ 150 ° C, temporarily stored for use;
  • Step 2 Prepare the reaction solvent - pre-melted ferrosilicon solution: In the equipped ferrosilicon liquid package, industrial silicon and about 75% of ferrosilicon are metered according to the capacity and ratio, and inserted into the heating electrode device to melt it into ferrosilicon solution. , kept at 1400 ° C -1650 ° C for use;
  • the electric arc furnace vacuum magnesium smelting stage includes:
  • Step 3 Vacuum vacuum furnace vacuuming: The silicon iron liquid is packaged in a vacuum reaction chamber of the vacuum arc furnace by a rotary moving device, and the translation device of the vacuum arc furnace base is activated to be in position, and then the vacuum furnace upper cover is activated.
  • the lifting device is covered with a vacuum furnace upper cover, so that the vacuum reaction chamber and the vacuum furnace upper cover are completely sealed and firmly, and then vacuumed by a vacuum suction device, and the vacuum pressure value is 20-2500 Pa;
  • Step 4 Filling with argon gas: open the argon blowing valve, backfill the argon gas into the vacuum reaction chamber after vacuuming in step three, and turn on the electrode heating device to boil the ferrosilicon liquid and keep the temperature at 1400-1650 ° C, and argon gas all. Filling
  • Step 5 Adding a reactant: inserting a powder injection gun into the ferrosilicon liquid from the side of the vacuum arc furnace, and mixing the argon gas into the ferrosilicon liquid to spray the heated magnesium ore powder; the argon gas is blown
  • the effect is that the magnesium ore powder and the ferrosilicon liquid are fully stirred and mixed, and the displacement reduction reaction occurs under the vacuum state and the controlled range of high temperature to generate magnesium vapor;
  • Step 6 Cooling collection: The magnesium vapor produced in step 5 is transported through the magnesium vapor transfer cylinder in the vacuum direction, the magnesium vapor build-up carrier carries the check valve, and then flows into the magnesium vapor condensation trapping device with temperature control at 650 ⁇ 40 °C.
  • the magnesium liquid (or dripping) stream obtained in the magnesium vapor condensation trapping device is dripped into the magnesium liquid collecting tank, and is subjected to ingot or refining, and the argon gas used in the vacuum high temperature smelting is passed through the gas.
  • the three dust collector is processed by the argon gas purification and collecting device and flows to the argon gas storage tank;
  • Step 7 clearing the slag: after the reduction reaction is finished, discharging the slag liquid in the pre-melted ferrosilicon liquid package through the slag discharge valve;
  • Step 8 Perform the next round of operation according to the steps from step two to step seven, and rotate the work in turn;
  • the end of the shutdown phase includes:
  • Step 9 After the reaction of the vacuum reaction chamber is finished, the powder injection gun is closed; then the argon blowing valve, the electric arc furnace heating device, the vacuum suction device, the argon gas purification and trapping device, the argon gas output valve, the cold water atomizer are closed. And the collected gas does not produce secondary reflow;
  • Step 10 When the pressure of the vacuum reaction chamber is balanced with the atmosphere from the detecting instrument, the lifting device and the translation device are respectively activated to separate the vacuum reaction chamber from the upper cover of the vacuum furnace, and the rotating mobile device is activated and pre-used. The ferrosilicon package is replaced and each is in its place.
  • the present invention has the following advantages:
  • the new method of the vacuum furnace magnesium smelting method of the electric arc furnace of the invention has the advantages that the magnesium-containing powder after heating and decomposing is pulverized, and in the molten pool in which the ferrosilicon is melted into a liquid, after the vacuum treatment, the argon gas is charged, and the high temperature is contained in the spray.
  • the silicon ferrite solution is pre-melted with a silicon content of 40%--75%, and the temperature is 1400C--1650C, and sent to the position of the AC-DC arc heating device. After sealing and sealing, the temperature is maintained by arc heating, and the pumping device is started.
  • To form a vacuum first fill the container with argon gas, and after the argon gas is saturated, start to spray 900c---1000c content of 20%---80% magnesium-containing ore powder into the ferrosilicon liquid package. In the boiling environment of argon, the magnesium ore powder and the ferrosilicon solution are subjected to a reduction reaction with a vacuum of 200--25000 Pa.
  • the reacted magnesium vapor passes through a magnesium vapor carrying device, passes through a magnesium chiller to form a magnesium liquid, and then passes through
  • the magnesium liquid receiving device is sent to the magnesium liquid refining station for refining pouring or directly producing other products, and the argon gas is processed and recovered by the cooling dust removing device.
  • the production process of the invention is reasonable, compact, the equipment is matched, the process is complete, the reaction process is fast, the time is short, the production efficiency is high, and the production cost is reduced by more than 1/3.
  • Figure 1 is a schematic view showing the apparatus for producing and producing a magnesia ore raw material of the present invention
  • Figure 2 is a partial schematic view of Figure 1;
  • Figure 3 is a partial schematic view of Figure 1;
  • Figure 4 is a partial schematic view of Figure 1;
  • Figure 5 is a schematic structural view of a vacuum induction furnace magnesium smelting apparatus of the present invention.
  • Figure 6 is a partial schematic view of Figure 5;
  • Figure 7 is a partial schematic view of Figure 5;
  • Figure 8 is a schematic structural view of an electric arc furnace vacuum magnesium smelting apparatus of the present invention.
  • Figure 9 is a partial schematic view of Figure 8.
  • Figure 10 is a partial schematic view of Figure 8.
  • Figures 1 - 7 are marked as:
  • 201 ferrosilicon liquid package 202 heating electrode device, 203 electric arc furnace upper cover, 204 pre-melted ferrosilicon liquid, 205 ferrosilicon alloy feeding port, 301 vacuum electric arc furnace, 302 thermal insulation brick, 303 vacuum reaction chamber, 304 pre-melted silicon iron liquid Package, 305 ferrosilicon, 306 powder injection gun, 307 argon valve, 308 check valve, 309 vacuum furnace top cover, 310 electrode heating device, 311 lifting device, 312 translation device, 313 rotary moving device, 401 mg Steam delivery cylinder, 402 magnesium vapor accumulation carrier, 403 check valve, 404 magnesium vapor condensation trap, 405 magnesium liquid collection tank, 406 metal magnesium liquid, 407 magnesium liquid discharge port, 408 third dust collector, 409 vacuum pumping Gas device, 410 argon gas purification and trapping device, 411 argon gas storage tank, 412 safety valve, 413 argon gas output valve, 414 automatic air lock dust valve, 415 cold water sprayer, 416 shutters.
  • a vacuum induction furnace magnesium smelting system is disclosed in Embodiment 1, characterized in that the system comprises a grinding system, a preheating decomposition system, a calcining system, and a secondary heating which are sequentially connected.
  • the system, the vacuum reaction system, the condensation collection system, the vacuum reaction system is provided with a slag collection system, and the condensing collection system is provided with a dust collection and collection system; wherein:
  • the grinding system includes a crusher 101, a storage 102, a first hoist 104, a grinding head stabilization silo 105, a vertical mill 107, a separator 108, a first precipitator 109, and a second hoist 113 connected in sequence.
  • the first storage bank 114, the separator 108 is connected to the upper portion of the vertical mill 107, and is sequentially connected in series with the first dust collector 109 and the first exhaust fan 110, and penetrates with the product outlet 112, and the bottom of the vertical mill 107 is connected.
  • the preheating decomposition system includes a bucket elevator 116 connected to the first storage reservoir 114 in the grinding system by a circular pipe reamer 115, and further includes a sequential connection with the bucket elevator 116.
  • the feed screw conveyor 117 and the four-stage preheating decomposition tower 118, the cyclone dust collector 120 and the four-stage preheating decomposition tower 118 are connected in parallel to the feed screw conveyor 117, and a blower 127 is connected to the upper portion of the cyclone dust collector 120.
  • the lower end is connected with a second exhaust fan 119, the blower 127 is provided with an exhaust chimney 128, the outlet of the cyclone 120 is provided with a return reamer 121;
  • the calcining system includes a rotary kiln 122 which is continuous with the four-stage preheating decomposition tower 118.
  • the rear combustion chamber of the rotary kiln 122 is provided with a gas injection gun 123 and is coupled with the blower 124.
  • the gas used by the gas injection gun 123 is remotely connected.
  • the gas storage tank 129 is provided.
  • the kiln end of the rotary kiln 122 is provided with a conveyor 125 for conveying materials.
  • One end of the conveyor 125 is connected to the third hoist 130, and the other end is provided with a front chiller 126, and the third hoist 130 is connected. Going to the second stock storage 131;
  • the secondary heating system includes a heating tank 134 connected to the second storage silo 131 by a "Z" shaped buried scraper conveyor 133, a hot blast stove 135 connected to the heating tank 134, a second storage silo 131 and a heating tank 134 are connected to the second precipitator 137 through a pipe, and the tail of the heating tank 134 is connected to the vacuum reaction system through the feeding valve 139 and the feeding pipe 140;
  • the vacuum reaction system includes a vacuum induction furnace 301 connected to the heating tank 134 in the secondary heating system through the conveying pipe 140 and the powder blowing gun 306, a ferrosilicon liquid package 304 placed in the vacuum induction furnace 301, and a vacuum furnace.
  • Cover 309, the vacuum induction furnace 301 is an induction coil 315, an insulation layer 302, a ferrosilicon liquid package 304, a vacuum reaction chamber 303 from the outside to the inside, and a ferrosilicon liquid 305 is contained in the ferrosilicon liquid package 304, and the vacuum furnace upper cover 309 It is disposed on the lifting device 311, and the vacuum furnace upper cover 309 is provided with a feeding port 308 and a detecting port 310.
  • the powder blowing gun 306 penetrates from the feeding port 308 into the ferrosilicon liquid package 304, and the powder spraying
  • the blow gun 306 is in communication with the peripheral argon blowing valve 307, and is interspersed with the feed pipe 140 and the feeding valve 139.
  • a check valve 316 is installed between the argon blowing valve 307 and the powder blowing gun 306;
  • the system includes a slag collecting device 314 connected to the silicon iron liquid bag 304 in the vacuum reaction system through the closed type slag port 313, and the lower portion of the slag collecting device 314 and the vacuum induction furnace 301 are provided with a translating device 312;
  • the condensing collection system includes a primary cooling device 402 connected to a vacuum induction furnace 301 in a vacuum reaction system through a magnesium vapor delivery cylinder 401, a dust removal device 403, a magnesium vapor bearing device 404, and a magnesium vapor, which are sequentially connected to the primary cooling device 402. a condensing and collecting device 405, a magnesium-magnesium liquid tank 406, and a third dust collector 408 connected to the dust collecting and collecting system, the third dust collector 408 sequentially passing through the vacuum pumping device 409, An argon gas purifying trap 410 is connected to the argon gas tank 411 of the dust collecting gas system.
  • the discharge port of the first storage 102 in the grinding system is provided with a regulating shutter 103, and the discharge port of the grinding head stabilization silo 105 is connected to the vertical mill 107 through the electronic belt scale 106; the second storage bank
  • the outlet of the 131 is provided with a bottom regulating valve 132.
  • the feeding port 139 is provided with a feeding valve 139, and the heating fan 134 is connected with a second induced draft fan 136, and the second dust collector 137 is connected with a third exhaust fan 138, an inlet of the argon gas storage tank 411 is provided with an intake valve 412, an outlet is provided with an argon gas output valve 413, and a magnesium liquid liquid tank 406 is provided with a magnesium liquid discharge port 407, and a third dust remover An automatic air lock dust valve 414 is provided at the bottom of the 408.
  • the embodiment also discloses a vacuum induction furnace magnesium smelting method, which is characterized in that it comprises three stages of pre-preparation, induction furnace vacuum magnesium smelting and end opening and closing;
  • the pre-preparation phase includes:
  • Step 1 Prepare the reactants - magnesium ore containing powder:
  • calcination four stages of decomposition
  • the preheated decomposition material in the hot tower 118 is slid into the rotary kiln 122 to be calcined, so that the calcium carbonate overflows, forming a forged white powder containing 40% to 46% of magnesium oxide (mainly composed of Mgo, Cao), and the forging white powder is thirdly upgraded.
  • the machine 130 is transported to the third storage silo 131 for storage. 4.
  • Heating The forged white powder in the third storage silo 131 is transported to the heating tank 134 via the "Z" type buried scraper conveyor 133, and is reheated to 900 ° C ⁇ 150 ° C, temporary storage for use;
  • Step 2 Preparing a reaction solvent - pre-melting ferrosilicon alloy liquid: In the equipped vacuum induction furnace 301, about 75% of ferrosilicon is metered according to capacity and ratio, and melted into ferrosilicon liquid at 1200 ° C - 1650 ° C Keep warm for use;
  • the induction furnace vacuum magnesium smelting stage comprises:
  • Step 3 Vacuum induction furnace 301 is vacuumed: the base induction device 312 of the vacuum induction furnace 301 and the slag collection device 314 are respectively activated to be docked, and then the lifting device 311 of the vacuum furnace upper cover is activated, and the vacuum furnace upper cover is covered. 309, the vacuum reaction chamber 303 and the vacuum furnace upper cover 309 are completely sealed and firmly, and then vacuumed by a vacuum device, the vacuum pressure value is 100-12000Pa;
  • Step 4 Argon gas filling: the argon blowing valve 307 is opened, and the argon gas is backfilled in the vacuum reaction chamber 303 after the vacuuming in the third step, and the heating system of the vacuum induction furnace 301 is turned on, and the molten iron liquid is photographed through the detecting port 310 to make the molten iron. Boiling and maintaining the temperature at 1200-1650 ° C, and the argon gas is fully filled;
  • Step 5 Adding a reactant: inserting a powder injection gun 306 into the ferrosilicon solution 305 from the top of the upper cover 309 of the vacuum furnace, and mixing the argon gas into the ferrosilicon solution 305 to appropriately spray the heated magnesium ore powder;
  • the action of argon gas injection and the mechanism of electromagnetic stirring enable the magnesium ore powder and the ferrosilicon liquid to be thoroughly stirred and mixed, and the displacement reduction reaction occurs under the vacuum state and the high temperature of the control range to generate magnesium vapor;
  • Step 6 Cooling collection: The magnesium vapor generated in step 5 is sequentially transported through the magnesium vapor delivery cylinder 401 in the vacuum direction, cooled by the primary cooling device 402, and dedusted by the dust remover 403, and then flows into the magnesium vapor carrying device 404, and then flows into the temperature control at 600 ⁇ .
  • the magnesium liquid (or drip) stream obtained in the magnesium vapor condensation trap 405 is (dropped) into the metal magnesium liquid tank 406, to be ingot or refined, in a vacuum
  • the argon gas used in the high-temperature smelting is sent to the argon gas storage tank 411 by the vacuum cleaner 409 after being sent to the argon gas purification and trapping device 410 by the third dust collector 408;
  • Step 7 clearing the slag: after the reduction reaction is completed, the slag collecting device 314 collecting the slag liquid is displaced, and then the slag collecting device 314 is reset;
  • Step 8 Perform the next round of operations according to the steps of Step 2 to Step 7, and sequentially rotate the operations; the ending and stopping phases include:
  • Step 9 After the reaction of the vacuum reaction chamber is finished, the powder blowing gun 306 is sequentially closed and lifted; the argon blowing valve, the induction furnace heating device, the vacuum pumping device 409, the dust removing device 403, and the third dust collector 408 are sequentially closed. And argon output valve 413, and the collected gas does not produce secondary reflow;
  • Step 10 When the pressure of the vacuum reaction chamber 303 is balanced with the atmosphere from the detecting instrument, the lifting device 311 and the translation device 312 are respectively activated to separate the vacuum reaction chamber 303 from the vacuum furnace upper cover 309.
  • a vacuum induction furnace magnesium smelting system is disclosed in Embodiment 2, including a grinding system, a preheating decomposition system, a calcining system, a secondary heating system, a vacuum reaction system, and the like, which are sequentially connected.
  • a condensing collection system is provided with a dust collection and collection system.
  • FIG. 8 is a schematic structural view of an electric arc furnace vacuum magnesium smelting apparatus of the present invention
  • FIG. 9 is a partial schematic view of FIG. 8
  • FIG. 10 is a partial schematic view of FIG.
  • the vacuum reaction system includes a vacuum arc furnace 301 connected to the heating tank 134 in the secondary heating system through the feed pipe 140 and the powder blowing gun 306, and a pre-melted silicon iron package 304 placed in the vacuum arc furnace 301.
  • the vacuum furnace upper cover 309 further includes two or more ferrosilicon liquid packages 201, and the ferrosilicon liquid package 201 contains a pre-melted ferrosilicon liquid 204, and an electric arc furnace upper cover 203 on the upper portion of the ferrosilicon liquid package 201.
  • the heating electrode device 202 and the ferrosilicon alloy feeding port 205 are arranged, and the vacuum arc furnace 301 is an outer furnace body, an insulating brick 302, a vacuum reaction chamber 303, a pre-melted silicon iron liquid package 304, and pre-melted silicon from the outside to the inside.
  • the ferrosilicon liquid 305 contained in the molten iron package 304, the vacuum furnace upper cover 309 is disposed on the lifting device 311, and the vacuum furnace upper cover 309 is provided with an electrode heating device 310, and the vacuum arc furnace 301 is provided with a row on the slag opening A slag valve 314, a vacuum arc furnace 301 and a ferrosilicon pack 201 are disposed with a rotary moving device 313.
  • the bottom of the vacuum arc furnace 301 is provided with a translating device 312.
  • the powder blowing gun 306 is disposed on the side wall of the vacuum arc furnace 301. Deep into the ferrosilicon 305, the powder injection gun 306 and the peripheral blowing argon Communication 307, and 140 and the conveying pipe with an addition cross-arm through valve 139, valve 307 and the argon feed powder blowing lance 306 is attached to a check valve 308;
  • the condensing collection system includes a magnesium vapor buildup carrier 402 connected to the vacuum furnace upper cover 309 in the vacuum reaction system through a magnesium vapor transfer cylinder 401, a check valve 403 connected in sequence to the magnesium vapor buildup carrier 402, and a magnesium vapor condensation trap.
  • a collecting device 404, a magnesium liquid collecting tank 405, and a third dust removing device 408 of the dust collecting and collecting system is connected to the upper portion of the magnesium steam condensing and collecting device 404.
  • the third dust collector 408 is provided with a vacuum pumping device 409 and cold water at the top.
  • the sprayer 415 is connected to the argon gas storage tank 411 via an argon gas purification and trapping device 410, and the louver 416 is staggered inside the third dust remover 408.
  • the discharge port of the first storage 102 in the grinding system is provided with a regulating shutter 103, and the discharge port of the grinding head stabilization bin 105 is connected to the vertical mill 107 through the electronic belt scale 106.
  • the discharge port of the second storage silo 131 is provided with a bottom regulating valve 132, and a feeding valve 139 is disposed at the discharge port of the heating tank 134, and a second induced draft fan 136 is connected to the heating tank 134, and the second dust remover 137 is connected.
  • a third exhaust fan 138 is connected to the upper portion.
  • the inlet of the argon gas storage tank 411 is provided with an intake valve, the outlet is provided with an argon gas output valve 413, and the argon gas storage tank 411 is provided with a safety valve 412, and the magnesium liquid collection tank 405 is provided with magnesium
  • the liquid discharge port 407 is provided with an automatic air lock dust exhaust valve 414 at the bottom of the third dust remover 408.
  • the embodiment also discloses an electric arc furnace vacuum magnesium smelting method, which is characterized in that it comprises three stages of pre-preparation, electric arc furnace vacuum magnesium smelting and end opening and closing;
  • the pre-preparation phase includes:
  • Step 1 Prepare the reactants - magnesium ore containing powder:
  • calcination four stages of decomposition
  • the preheated decomposition material in the hot tower 118 is slid into the rotary kiln 122 to be calcined, so that the calcium carbonate overflows, forming a forged white powder containing 40% to 46% of magnesium oxide (mainly composed of Mgo, Cao), and the forging white powder is thirdly upgraded.
  • the machine 130 is transported to the third storage silo 131 for storage. 4.
  • Heating The forged white powder in the third storage silo 131 is transported to the heating tank 134 via the "Z" type buried scraper conveyor 133, and is reheated to 900 ° C ⁇ 150 ° C, temporary storage for use;
  • Step 2 Preparing a reaction solvent-premelted ferrosilicon solution: In the equipped ferrosilicon liquid package 201, industrial silicon and about 75% of ferrosilicon are metered according to capacity and ratio, and inserted into the heating electrode device 202 to be melted into silicon. Iron liquid, kept at 1400 ° C -1650 ° C for use;
  • the electric arc furnace vacuum magnesium smelting stage includes:
  • Step 3 The vacuum arc furnace 301 is evacuated: the ferrosilicon liquid package 201 is suspended in the vacuum reaction chamber 303 of the vacuum arc furnace 301 by the rotary moving device 313, and the translation device 312 of the base of the vacuum arc furnace 301 is activated to be in place. Then, the lifting device 311 of the upper cover of the vacuum furnace is activated, and the upper cover 309 of the vacuum furnace is covered to completely seal the vacuum reaction chamber 303 and the upper cover 309 of the vacuum furnace, and then vacuumed by a vacuum pumping device 409, vacuum The pressure value is 20-2500Pa;
  • Step 4 Argon gas filling: the argon blowing valve 307 is opened, and the argon gas is backfilled into the vacuum reaction chamber 303 after the vacuuming in the third step, and the electrode heating device 310 is turned on to boil the ferrosilicon liquid and the temperature is maintained at 1400-1650 ° C. And the argon gas is fully filled;
  • Step 5 adding a reactant: inserting the powder injection gun 306 from the side of the vacuum arc furnace 301 into the ferrosilicon liquid 305, and mixing the argon gas into the ferrosilicon solution 305 to appropriately spray the heated magnesium ore powder; Under the action of argon gas blowing, the magnesium ore powder and the ferrosilicon liquid 305 are fully stirred and mixed, and the displacement reduction reaction occurs under the vacuum state and the high temperature of the control range to generate magnesium vapor;
  • Step 6 Cooling collection: The magnesium vapor generated in step 5 is sequentially transported through the magnesium vapor transfer cylinder 401 in the vacuum direction, the magnesium vapor build-up carrier 402 is carried, the check valve 403 is carried, and the magnesium vapor condensation at a temperature of 650 ⁇ 40 ° C is further condensed.
  • the trapping device 404 the magnesium liquid (or dripping) stream obtained in the magnesium vapor condensation and trapping device 404 is (dropped) into the magnesium liquid collecting tank 405, and is to be ingot or refined, and used in vacuum high temperature smelting.
  • the argon gas is passed through the argon gas purification and trapping device 410 and then flows to the argon gas storage tank 411;
  • Step 7 clearing the slag: after the reduction reaction is completed, the slag liquid in the pre-melted ferrosilicon liquid package 304 is discharged through the slag discharge valve 314;
  • Step 8 Perform the next round of operations according to the steps of Step 2 to Step 7, and sequentially rotate the operations; the ending and stopping phases include:
  • Step 9 After the reaction of the vacuum reaction chamber is finished, the powder injection gun 306 is closed; and the argon blowing valve, the electric arc furnace heating device, the vacuum suction device 409, the argon purification and collection device 410, and the argon output valve 413 are sequentially closed. , cold water sprayer 415, and the collected gas does not produce secondary reflow;
  • Step 10 When the pressure of the vacuum reaction chamber 303 is balanced with the atmosphere from the detecting instrument, the lifting device 311 and the translation device 312 are respectively activated to separate the vacuum reaction chamber 303 from the vacuum furnace upper cover 309, and the rotary moving device 313 is activated. Replace with the pre-used ferrosilicon package, each in its place.
  • a plurality of cold water sprayers 415 uniformly distributed on the top should be opened to make the water mist cross over the entire dust collecting chamber, and the physical temperature of the dust is raised by the indoor water temperature, and the spray water is sprayed.
  • the dust collector wall and the louver are collected in the lower cone of the sedimentation chamber, and are automatically discharged into the sedimentation tank by the automatic air lock dust exhaust valve 414, and are reused after being cooled and purified.
  • Embodiment 1 and Embodiment 2 are based on the principle of vacuum magnesium smelting, that is, belong to the same inventive concept and solve the same technical problem, so there is singularity.

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Abstract

L'invention concerne un système de fusion de magnésium sous vide, comprenant les éléments suivants montés en série : un système de pulvérisation, un système de décomposition de préchauffage, un système de calcination, un système de chauffage secondaire, un système de réaction sous vide chauffé par un four à induction ou un four à arc électrique, et un système de collecte par condensation. Le procédé de raffinage de magnésium comprend une préparation préalable, un four à induction ou un four à arc électrique qui raffine sous vide le magnésium, et réalise l'arrêt/le démarrage. Une poudre contenant du magnésium est soufflée dans une solution de ferrosilicium pour produire de la vapeur de magnésium, et la vapeur de magnésium est condensée et collectée pour former du magnésium brut. L'efficacité de production du système et du procédé est élevée.
PCT/CN2016/099112 2016-06-29 2016-09-14 Système de raffinage de magnésium sous vide a four à arc électrique, four à induction sous vide et procédé de raffinage de magnésium associé Ceased WO2018000587A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201610496951.1 2016-06-29
CN201610498925.2A CN105970004B (zh) 2016-06-29 2016-06-29 一种真空感应炉炼镁系统及其炼镁方法
CN201610498925.2 2016-06-29
CN201620666348.9 2016-06-29
CN201620666348.9U CN206089779U (zh) 2016-06-29 2016-06-29 一种真空感应炉炼镁系统
CN201610496951.1A CN105950889B (zh) 2016-06-29 2016-06-29 一种电弧炉真空炼镁系统及其炼镁方法

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CN109851241A (zh) * 2019-04-17 2019-06-07 鞍山市正大炉料有限公司 一种低电耗熔炼菱镁矿的装置和方法
CN110197050A (zh) * 2019-07-01 2019-09-03 山西云时代太钢信息自动化技术有限公司 一种真空感应炉冶炼镍基合金的配料方法
CN111001483A (zh) * 2019-12-31 2020-04-14 四川永祥多晶硅有限公司 多晶硅破碎系统和多晶硅破碎方法
CN111270088A (zh) * 2020-02-10 2020-06-12 中国恩菲工程技术有限公司 感应加热液态搅拌连续炼镁的系统和方法
CN113621832A (zh) * 2021-08-19 2021-11-09 中国中材国际工程股份有限公司 一种金属镁的制备方法
CN113736996A (zh) * 2021-09-03 2021-12-03 西安交通大学 一种皮江法还原罐间歇式连续化冶炼结晶镁的方法及装置
CN113737019A (zh) * 2021-08-25 2021-12-03 西安交通大学 高温连续化提取皮江法炼镁工艺中结晶镁的方法及装置
CN114774716A (zh) * 2022-06-06 2022-07-22 陕西秦龙电力股份有限公司 皮江法金属镁还原装置
CN115594205A (zh) * 2022-10-17 2023-01-13 东北大学（Cn） 一种喷雾热解炉的排尘和隔热环隙装置与方法
CN116005007A (zh) * 2023-01-06 2023-04-25 濮阳濮耐高温材料（集团）股份有限公司 一种铝热还原制备金属镁和镁铝尖晶石的方法
CN117645299A (zh) * 2024-01-30 2024-03-05 山东硅纳新材料科技有限公司 高安全连续制备高纯度纳米硅材料的方法及真空取镁装置
CN117961006A (zh) * 2024-04-01 2024-05-03 山东理工大学 埋管内流动气固两相流的冷却壁铸造成型系统及铸造工艺
CN119710292A (zh) * 2025-02-28 2025-03-28 河南科特尔机械制造有限公司 一种用于镁冶炼的加料天车

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CN101157989A (zh) * 2007-10-18 2008-04-09 中南大学 一种感应加热连续炼镁系统及其连续炼镁工艺
CN103882246A (zh) * 2014-01-08 2014-06-25 中国重型机械研究院股份公司 一种真空炼镁装置及其方法

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109851241A (zh) * 2019-04-17 2019-06-07 鞍山市正大炉料有限公司 一种低电耗熔炼菱镁矿的装置和方法
CN110197050A (zh) * 2019-07-01 2019-09-03 山西云时代太钢信息自动化技术有限公司 一种真空感应炉冶炼镍基合金的配料方法
CN111001483A (zh) * 2019-12-31 2020-04-14 四川永祥多晶硅有限公司 多晶硅破碎系统和多晶硅破碎方法
CN111001483B (zh) * 2019-12-31 2024-01-02 四川永祥多晶硅有限公司 多晶硅破碎系统
CN111270088B (zh) * 2020-02-10 2023-10-13 中国恩菲工程技术有限公司 感应加热液态搅拌连续炼镁的系统和方法
CN111270088A (zh) * 2020-02-10 2020-06-12 中国恩菲工程技术有限公司 感应加热液态搅拌连续炼镁的系统和方法
CN113621832A (zh) * 2021-08-19 2021-11-09 中国中材国际工程股份有限公司 一种金属镁的制备方法
CN113737019A (zh) * 2021-08-25 2021-12-03 西安交通大学 高温连续化提取皮江法炼镁工艺中结晶镁的方法及装置
CN113736996A (zh) * 2021-09-03 2021-12-03 西安交通大学 一种皮江法还原罐间歇式连续化冶炼结晶镁的方法及装置
CN114774716A (zh) * 2022-06-06 2022-07-22 陕西秦龙电力股份有限公司 皮江法金属镁还原装置
CN114774716B (zh) * 2022-06-06 2024-05-03 陕西秦龙电力股份有限公司 皮江法金属镁还原装置
CN115594205A (zh) * 2022-10-17 2023-01-13 东北大学（Cn） 一种喷雾热解炉的排尘和隔热环隙装置与方法
CN115594205B (zh) * 2022-10-17 2023-09-19 东北大学 一种喷雾热解炉的排尘和隔热环隙装置与方法
CN116005007A (zh) * 2023-01-06 2023-04-25 濮阳濮耐高温材料（集团）股份有限公司 一种铝热还原制备金属镁和镁铝尖晶石的方法
CN117645299A (zh) * 2024-01-30 2024-03-05 山东硅纳新材料科技有限公司 高安全连续制备高纯度纳米硅材料的方法及真空取镁装置
CN117645299B (zh) * 2024-01-30 2024-04-02 山东硅纳新材料科技有限公司 高安全连续制备高纯度纳米硅材料的方法及真空取镁装置
CN117961006A (zh) * 2024-04-01 2024-05-03 山东理工大学 埋管内流动气固两相流的冷却壁铸造成型系统及铸造工艺
CN117961006B (zh) * 2024-04-01 2024-05-28 山东理工大学 埋管内流动气固两相流的冷却壁铸造成型系统及铸造工艺
CN119710292A (zh) * 2025-02-28 2025-03-28 河南科特尔机械制造有限公司 一种用于镁冶炼的加料天车

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