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WO2007118369A1 - Système et procédé à débit réduit de production de ciment à l'aide de laitier métallurgique - Google Patents

Système et procédé à débit réduit de production de ciment à l'aide de laitier métallurgique Download PDF

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Publication number
WO2007118369A1
WO2007118369A1 PCT/CN2006/001429 CN2006001429W WO2007118369A1 WO 2007118369 A1 WO2007118369 A1 WO 2007118369A1 CN 2006001429 W CN2006001429 W CN 2006001429W WO 2007118369 A1 WO2007118369 A1 WO 2007118369A1
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WIPO (PCT)
Prior art keywords
slag
aqueduct
steel
outlet
conveyor
Prior art date
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Ceased
Application number
PCT/CN2006/001429
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English (en)
Chinese (zh)
Inventor
Weitian Zhang
Ling Huo
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Individual
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Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2007118369A1 publication Critical patent/WO2007118369A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B5/00—Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  slag 
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/14—Waste materials; Refuse from metallurgical processes
    • C04B18/141—Slags
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/08—Cooling slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • C21B3/10—Slag pots; Slag cars
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/022—Methods of cooling or quenching molten slag
    • C21B2400/024—Methods of cooling or quenching molten slag with the direct use of steam or liquid coolants, e.g. water
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C21B2400/032—Separating slag from liquid, e.g. from water, after quenching
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/052—Apparatus features including rotating parts
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/052—Apparatus features including rotating parts
    • C21B2400/056—Drums whereby slag is poured on or in between
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/05—Apparatus features
    • C21B2400/066—Receptacle features where the slag is treated
    • C21B2400/072—Tanks to collect the slag, e.g. water tank
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Definitions

  • the invention relates to a metallurgical slag production cement short process system and method, which can perform ultrafine powder treatment on steel slag or non-ferrous metal slag to separate metal particles from non-metal particles.
  • the system has short process, no explosion, safety and environmental protection. It can realize the real online direct treatment of metallurgical slag and is processed into fine cement by magnetic separation or jigging, and the metallurgical slag treatment rate reaches 100%.
  • the traditional steel slag treatment process is hot or hot suffocation method (Baosteel, Shougang and Angang, this method), that is, the liquid steel slag is poured into the slag slag tank, water is cooled and then transported to the slag mountain twice, crushed and then sorted.
  • the shortcomings are long process, high cost, occupation of land, pollution of the environment, waste of resources, and affecting the sustainable development of the steel industry. Therefore, it is necessary to study the reduction, resource utilization and high-value comprehensive utilization of steel slag.
  • Steel slag is the slag discharged during the steel making process.
  • the steel slag is mainly an oxide formed by oxidation of various elements in the metal charge, an eroded lining material and a furnace material, impurities introduced by the metal charge, and limestone, dolomite, iron ore specially added for adjusting the properties of the steel slag.
  • Slag-forming materials such as silica. Some iron particles are entrained in the steel slag, and the hardness is large.
  • the main chemical composition (mass fraction/%) of the steel slag is: Ca0, S i0 2 , KO, , Fe 2 0 :i , Mg0, P 2 0 5 , fCaO; Containing V 2 0 :i , Ti0 2 , etc., the composition has a wide range of fluctuations.
  • Steel slag is characterized by the presence of Fe oxide in the form of FeO and Fe 2 0 :i ; and FeO-based, the total amount is below 25%.
  • the steel slag contains dicalcium silicate (C2S) and tricalcium silicate (C3S) similar to Portland cement clinker.
  • the mass fraction of the high alkalinity converter steel slag is above 50%, medium and low alkalinity.
  • the mass fraction of the steel slag is below 50%, and the medium and low alkalinity steel slag is mainly dicalcium silicate (C2S).
  • the steel slag is formed at a temperature above 1560 ,, and the Portland cement clinker has a firing temperature of about 1400 ⁇ .
  • the steel slag has a high formation temperature, a dense crystal, a large crystal grain, and a slow hydration speed. Therefore, the steel slag can be referred to as over-fired Portland cement clinker.
  • steel slag is not only a waste, but also a very good cement raw material, especially using its low hydration heat and micro-expansion characteristics to produce a concrete material suitable for waterproofing and anti-leakage concrete, such as damming and
  • the large amount of underground concrete works can completely achieve the "zero" emission of steel slag.
  • FIG. 1 shows a schematic diagram of the steel slag transportation arrangement in the prior art.
  • the left side of the steel furnace 1 is a ladle 2
  • the right side of the steel furnace It is a slag tank 3
  • the ladle and the slag tank are reciprocated along a linear track 4, respectively.
  • the usual practice is to first introduce slag into the slag.
  • the tank, the slag tank is driven away from the steel furnace, and the slag tank is transported to the granulating device by a lifting device for granulation treatment.
  • 02135756 discloses a tilting steel slag water quenching treatment method, which is provided with a water quenching tank, a column is installed at the edge of the water quenching tank, and a granulator is installed on one side of the column body, and when the molten steel slag is poured into the slag tank car After being placed in the slag tank, the slag tank is tilted by the hook of the hoist and the lifting lug on the slag tank, and the tilting guide arm on the slag tank falls on the cylinder when rotated to a certain angle. The slag tank is rotated slowly around the rotating shaft of the cylinder to tilt the steel slag into the water quenching tank.
  • the pressurized water of the granulator has been sprayed to form a water curtain, so that the steel slag enters the water curtain and then granulates, and then enters the water quenching tank.
  • the steel slag after water quenching can be placed in the slag yard.
  • the method of the patent belongs to the offline processing method, the process of the method is long, and only the steel slag is processed into granulated slag, and the "zero" emission of the steel slag is not completed. Therefore, it is necessary to propose a metallurgical slag production cement short flow system and method. .
  • the system has short process, no explosion, safety and environmental protection. It can realize on-line direct treatment of metallurgical slag. After magnetic separation or jigging, it can be processed into ultra-fine grinding into cement to achieve 100% metallurgical slag treatment rate.
  • a metallurgical slag cement short-flow production system including a pre-furnace slag tanker traveling track, a slag granulating device disposed on a slag tanker traveling track side, and a slag tanker traveling track
  • One side is provided with a slag aqueduct traveling track, one end of the slag aqueduct traveling track meets with the slag tank traveling track, and the slag aqueduct is mounted with a steering slag aqueduct, and the inlet end of the slag aqueduct can be
  • the steel furnace slag outlet is docked, and the outlet end of the slag aqueduct can be docked with the chute of the slag granulation device;
  • the granulation outlet of the slag granulation device is provided with a sump, and the sump is provided with granulation a slag lifting and dewatering device, wherein the discharge end of the lifting and
  • a metallurgical slag cement short-flow production system including a pre-furnace slag tanker traveling track, and a slag granulation device disposed on a side of the slag tanker traveling track, the slag granulation device a slag tank tipping device is disposed at the device, and an inlet end of the slag granulating device is docked with a slag tapping port of the slag slag tank; a sump is provided at a granulation outlet of the slag granulating device, the set A granulated slag lifting and dewatering device is arranged in the pool, and a granulated slag conveyor is arranged at the discharge end of the lifting and dewatering device, and a discharge end of the granulated slag conveyor is arranged above the inlet of the primary magnetic separator, the magnetic separator Particle steel outlet through particles
  • the steel conveyor is connected with the steel
  • a metallurgical slag cement short-flow production method the steps of which are:
  • the steel furnace tipping device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device through the aqueduct, and processed by the granulating device to form granulated slag;
  • the granulated slag lifting and dewatering device and the conveyor belt device are used to transport the granulated slag to a drying chamber, and the waste heat of the steelmaking converter is used for continuous drying, and the drying temperature is 200-30 (TC, the drying time is 0. 5-1 minutes;
  • the conveyor belt device transports the dried granulated slag to a primary magnetic separator for magnetic separation processing, and the magnetically selected particle steel is transported to the collection bin, and the tail slag of the first-order magnetic separator is conveyed and coarsely ground.
  • the grinding process is carried out in the machine, and the coarsely pulverized tail slag is sent to the secondary magnetic separator, the secondary magnetic separation slag fine powder is sent to the collection bin, and the secondary magnetic slag discharged tail slag enters the ultrafine mill for grinding treatment. Excipients are added to the grinding process to produce steel slag cement.
  • the invention has the following advantages:
  • the invention can greatly shorten the slag treatment process, and can directly convert the metallurgical slag from a molten state into a cement.
  • the invention adopts two-stage magnetic separation or jigging separation, which can improve the recovery rate of metal.
  • the invention can realize the on-line direct treatment of the metallurgical slag and is processed into cement by ultra-fine grinding after screening and separation.
  • the treatment rate of the metallurgical slag reaches 100%, and the metallurgical slag has zero discharge, and the whole process has no secondary pollution, which is beneficial to environmental protection.
  • the invention can utilize the smelter sewage to carry out slag treatment, save water resources and smelt sewage.
  • FIG. 1 Schematic diagram of steel slag transportation arrangement in the prior art
  • Figure 3 is a schematic view of the steel slag treatment arrangement of the present invention (top view)
  • Figure 4 is a schematic view showing the structure of the steel slag processing apparatus of the present invention (cross-sectional view taken along line A-A of Figure 3).
  • Figure 5 is a second embodiment of the steel slag processing apparatus of the present invention.
  • Figure 7 is a structural view of a third steel slag processing apparatus according to an embodiment of the present invention (B-B sectional view of Fig. 6).
  • Fig. 8 Embodiment 4 of the steel slag processing apparatus of the present invention
  • Figure 10 is a sixth embodiment of the steel slag processing apparatus of the present invention.
  • Embodiment 1 - Referring to FIG. 2, FIG. 3, FIG. 4, a metallurgical slag cement short-flow production system, including a steel furnace 1 (the steel furnace can be a converter or a non-ferrous metal melting furnace), a pre-slag slag tanker traveling track 4 a slag granulating device 40 is disposed on a side of the slag tanker traveling rail, and a slag aqueduct traveling rail 102 is disposed on the other side of the slag tanker traveling rail, and one end of the slag aqueduct traveling track meets with the slag tank traveling track, A slag slag aqueduct 101 is installed on the slag aqueduct vehicle 10.
  • a steel furnace 1 the steel furnace can be a converter or a non-ferrous metal melting furnace
  • a slag granulating device 40 is disposed on a side of the slag tanker traveling rail
  • a slag aqueduct traveling rail 102 is
  • a slag granulation device is disposed on the left side, and a slag aqueduct vehicle is disposed on the right side.
  • the steering slag aqueduct is a 90 ° steering aqueduct.
  • the traveling track of the slag aqueduct vehicle and the walking track of the slag tanker are arranged orthogonally.
  • the inlet end of the slag aqueduct can be docked with the slag outlet of the steel furnace 1 (since the conventional structure, the slag opening is not shown), the outlet end of the slag aqueduct and the chute 30 of the slag granulation device
  • the slag granulation device is provided with a gas collecting device 50.
  • the granulation outlet of the slag granulating device is provided with a sump 70, and the sump is provided with a granulated slag lifting and dewatering device 60.
  • a granulated slag lifting and dewatering device 60 Form a steel slag treatment device.
  • the discharge end of the lifting and dewatering device is provided with a granulated slag conveyor 80.
  • the discharge end of the granulated slag conveyor is disposed above the inlet of the primary magnetic separator 90, and the granulated slag conveyor can pass through a continuous Drying chamber 801, on-line drying of granulated slag, the particle steel output port of the magnetic separator is connected with the steel material collecting bin 100 through a particle steel conveyor, and the tailings output port of the magnetic separator passes through the tail slag conveyor Connected to the inlet end of the coarse grinding machine 110, the discharge port of the coarse grinding machine is connected with the inlet of the secondary magnetic separator 120, and the slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor 130, the secondary magnetic separation
  • the tail slag outlet of the machine is connected to the inlet of the ultrafine mill 140, and the steel slag cement outlet of the ultrafine mill is connected with the cement conveyor 150 to send the steel slag cement into the warehouse.
  • the steering slag aqueduct is a mobile steel slag chute.
  • the chute adopts a curved flow passage design, that is, a chute outlet and The inlet is not in a straight line, but is deflected by a certain angle.
  • the steering slag aqueduct is a 90 ° steering aqueduct; in another embodiment, the steering slag aqueduct may be a A 30° to 60° steering aqueduct (not shown).
  • the lifting and dewatering device may adopt a conventional bucket elevator, which adopts a grid structure for dehydration of the granulated slag, which is not further described as a conventional device.
  • the primary magnetic separator and the secondary magnetic separator can adopt conventional equipment, such as the roller magnetic separator involved in Chinese Patent No. 200320110040. 9, and can also use the integrated magnetic paper of Chinese Patent 200420084518.
  • Machine selection The coarse grinding machine and the ultra-fine grinding machine can use a conventional grinding machine for cement production, for example, the Portland cement mill involved in Chinese Patent No. 200410077444. 1, and other structures of the grinding machine can also be used. Conventional equipment is not further described.
  • the original slag tanker is used to transport non-granulated waste slag or to transport steel furnace slag when the granulation apparatus is overhauled.
  • the slag tanker is activated, the slag aqueduct is parked on the right side of the slag tanker's travel track.
  • the production process of this embodiment can employ the process described in the eighth embodiment.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the embodiment is an improvement based on the first embodiment.
  • the steering slag aqueduct is a 90° steering aqueduct, the slag aqueduct traveling track and the slag tanker
  • the walking track is skewed. That is, the walking track of the slag aqueduct vehicle and the walking track of the slag tanker are inclined at an angle of 30 ° ⁇ 60 °.
  • the advantage of the skew setting is to reduce the area of use of the device.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • this embodiment is an improvement on the basis of the first embodiment.
  • a slag granulation device 40 is disposed on a side of the slag tanker traveling rail, and a slag aqueduct vehicle is disposed on the other side of the slag tanker traveling rail.
  • a slag granulation device is disposed on the left side, right The slag aqueduct is disposed on the side, and the steering slag aqueduct is a 90° steering aqueduct, and the slag aqueduct traveling track and the slag tanker traveling track are orthogonally disposed.
  • a slag buffer tank 20 is disposed at the slag granulation chute 30, and the slag buffer tank is mounted on a tilting device 201, and the outlet end of the slag aqueduct and the slag of the slag buffer tank The entrance end is docked.
  • the inlet end of the slag aqueduct can be docked with the slag outlet of the steel furnace 1, and the slag outlet of the slag buffer tank is docked with the chute 30 of the slag granulation device; the granulation outlet of the slag granulation device
  • a sump 70 in which a granulated slag lifting and dewatering device 60 is disposed, and the above equipment constitutes a steel slag treatment device.
  • the discharge end of the lifting and dewatering device is provided with a granulated slag conveyor 80 (hereinafter, see FIG. 2).
  • the discharge end of the granulated slag conveyor is disposed above the inlet of the primary magnetic separator 90, the magnetic separator
  • the particle steel output port is connected to the steel material collection bin 100 through a particle steel conveyor, and the tailings output port of the magnetic separator is connected to the inlet end of the coarse grinding machine 110 through the tail slag conveyor, the outlet of the coarse grinding machine and the second Stage magnetic separator 120
  • the inlet port is connected, the slag fine powder outlet of the secondary magnetic separator is connected with the fine powder conveyor 130, the tail slag outlet of the secondary magnetic separator is connected with the inlet of the ultrafine mill 140, and the steel slag cement of the ultrafine mill
  • the output port is connected to the cement conveyor 150.
  • the tilting device belongs to the prior art and will not be described in detail herein. Reference may be made to the steel furnace tilting device or the structure described in Chinese Patent No. 02135756 and 200410070342.
  • the fourth embodiment is an improvement on the basis of the third embodiment.
  • the traveling track of the melted aqueduct vehicle is obliquely disposed with the traveling track of the slag tanker. That is, the walking track of the slag aqueduct vehicle and the traveling track of the slag tanker are inclined at an angle of 30 ° ⁇ 60 °.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the embodiment is an improvement based on the third embodiment or the first embodiment.
  • the high-pressure water pipe or the pool of the slag granulation device is connected with the steelmaking plant sewage pool, and the steelmaking is used.
  • the plant sewage is subjected to water quenching, and a condensing recovery device 501 is disposed above the slag granulating device, and the purified water outlet of the condensing recovery device is in communication with a purified water collector 502.
  • a metallurgical slag cement short-flow production system includes a pre-slag slag tanker traveling rail 4, the slag tank car 3 is run on the traveling rail, a slag tank 401 is arranged on the slag tanker, and a melting is arranged on the side of the slag tanker traveling rail.
  • a slag granulation device 40 wherein the slag granulation device is provided with a slag tank tilting device 402, and the slag tank truck can be transported by a crane to a slag tank tilting device, and the inlet end of the slag granulating device can be
  • the slag granulation device is connected to the slag outlet; the granulation outlet of the slag granulation device is provided with a sump 70, and the sump is provided with a granulated slag lifting and dewatering device 60, and the lifting and dewatering device is provided at the discharge end a granulated slag conveyor, the discharge end of the granulated slag conveyor is arranged above the inlet of the primary magnetic separator, and the particle steel output port of the magnetic separator is connected to the steel collection bin through a particle steel conveyor, the magnetic The tailings output port of the machine is connected to the inlet end of the coarse grinding machine through the tail slag conveyor, the discharge port of
  • a metallurgical slag cement short-flow production system including a pre-furnace slag tanker traveling track, and a slag granulation device, a slag tanker, is disposed on a side of the slag tanker traveling track
  • the slag aqueduct traveling track is disposed on the other side of the traveling track, and one end of the slag aqueduct traveling track meets with the slag tank traveling track, and the slag aqueduct is mounted with a steering slag aqueduct, and the slag aqueduct inlet
  • the end can be docked with the steel furnace slag outlet, and the outlet end of the slag aqueduct can be docked with the chute of the slag granulation device;
  • the slag granulation device has a sump at the granulation outlet, and the sump is provided
  • the granulated slag lifting device may use a mud pump or a pneumatic lifting device to feed the granulated slag in the sump into the granulated slag dewatering device.
  • the granulated slag dewatering device can be used with a conventional drum type dehydrator.
  • the dehydrator can be referred to the dehydrator described in the specification of the wheel slag granulation device disclosed in Chinese Patent No. 97228276. or the metallurgy disclosed in Chinese Patent No. 00261532. The dehydrator described in the slag treatment device manual.
  • the steel furnace tipping device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device through the aqueduct, and processed by the granulating device to form granulated slag;
  • the granulated slag lifting and dewatering device and the conveyor belt device are used to transport the granulated slag to a drying chamber, and the residual heat of the steelmaking converter is used for continuous drying, the drying temperature is 200-30 CTC, and the drying time is 0. 5- 1 minute;
  • the conveyor belt device transports the dried granulated slag to a primary magnetic separator for magnetic separation processing, and the magnetically selected particle steel is transported to the collection bin, and the tail slag of the first-order magnetic separator is conveyed and coarsely ground.
  • the grinding process is carried out in the machine, and the coarsely pulverized tail slag is sent to the secondary magnetic separator, the secondary magnetic separation slag fine powder is sent to the collection bin, and the secondary magnetic slag discharged tail slag enters the ultrafine mill for grinding treatment. Excipients are added to the grinding process to produce steel slag cement.
  • the smelting furnace tilting device is started to pour the steel slag into the slag aqueduct and is input into a metallurgical granulating device 40 through the aqueduct, and processed by the granulating device to form granulated slag;
  • the granulated slag lifting and dewatering device 60 and the conveyor belt device 80 are used to transport the granulated slag to a drying chamber 801, and the waste heat of the steelmaking converter is used for continuous drying, and the drying temperature is 200-300 ° C.
  • the drying time is 0. 5 - 1 minute;
  • the conveyor belt device transports the dried granulated slag to the first-stage jigging separator 91 for sorting, and the sorted particle metal is transported to the collection bin 100, and the tail slag of the first-stage jigging separator
  • the roughing mill 110 is subjected to grinding treatment, and the coarsely ground tailings are sent to the second-stage jigging separator 121, and the slag fine powder separated by the second-stage jigging is sent to the collecting bin through the fine powder conveyor 130,
  • the tailings separated from the jigging enter the ultrafine mill 140 for grinding treatment, and the auxiliary materials are added in the grinding process to produce steel slag cement, which is sent to the cement silo through the cement conveyor 150.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Structural Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Civil Engineering (AREA)
  • Carbon Steel Or Casting Steel Manufacturing (AREA)
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Abstract

L'invention concerne un système à débit réduit de production de ciment à l'aide de laitier métallurgique, comprenant un dispositif de granulation de laitier situé entre le rail du wagon à laitier et le rail du wagon à trémie. Une trémie est montée sur ledit wagon et l'entrée et la sortie de la trémie sont respectivement connectées à la sortie de laitier d'un four de fabrication d'acier et à la trémie d'un dispositif de granulation de laitier. Ledit système comprend également un bassin situé à la sortie du dispositif de granulation de laitier, un dispositif de levage et d'assèchement du laitier granulé contenu dans le bassin, et un dispositifde transport de laitier granulé monté au niveau de la sortie du dispositif, la sortie du dispositif de transport étant située au-dessus de l'entrée du séparateur magnétique principal. La sortie de rejets de laitier du séparateur magnétique principal est connectée à l'entrée d'une machine de broyage primaire via un dispositif de transport des rejets de laitier, la sortie de la machine de broyage primaire étant connectée à l'entrée d'un séparateur magnétique secondaire. La sortie de laitier sous forme de poudre fine et la sortie de rejets de laitier du séparateur magnétique secondaire sont respectivement connectées à un dispositif de transportde laitier sous forme de poudre fine et à l'entrée d'une machine de broyage ultrafin, une sortie de la machine de broyage ultrafin étant connectée au dispositif de transport de ciment.
PCT/CN2006/001429 2006-04-14 2006-06-23 Système et procédé à débit réduit de production de ciment à l'aide de laitier métallurgique Ceased WO2007118369A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200610072182A CN101053975B (zh) 2006-04-14 2006-04-14 一种冶金炉渣生产水泥短流程系统及方法
CN200610072182.9 2006-04-14

Publications (1)

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WO2007118369A1 true WO2007118369A1 (fr) 2007-10-25

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CN110142123A (zh) * 2019-05-15 2019-08-20 江苏省镔鑫钢铁集团有限公司 一种钢渣处理系统和处理方法
CN110512037A (zh) * 2019-09-25 2019-11-29 中冶沈勘秦皇岛工程设计研究总院有限公司 熔渣收送设备及熔渣收送方法
CN111763788A (zh) * 2020-08-04 2020-10-13 濮阳市华新智能机械有限公司 一种节能环保钢渣淬水粒化生产线
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CN103862056A (zh) * 2014-03-31 2014-06-18 唐山市嘉恒实业有限公司 一种铁合金熔液粒化方法
CN110142123A (zh) * 2019-05-15 2019-08-20 江苏省镔鑫钢铁集团有限公司 一种钢渣处理系统和处理方法
CN110512037A (zh) * 2019-09-25 2019-11-29 中冶沈勘秦皇岛工程设计研究总院有限公司 熔渣收送设备及熔渣收送方法
CN111763788A (zh) * 2020-08-04 2020-10-13 濮阳市华新智能机械有限公司 一种节能环保钢渣淬水粒化生产线
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CN114045365A (zh) * 2021-10-09 2022-02-15 西宁特殊钢股份有限公司 一种钢渣处理工艺及其所得尾渣的应用
CN114045365B (zh) * 2021-10-09 2022-11-18 西宁特殊钢股份有限公司 一种钢渣处理工艺及其所得尾渣的应用
CN113943840A (zh) * 2021-10-19 2022-01-18 新疆八一钢铁股份有限公司 一种炼钢冶金钢渣的低排放处理方法
CN115747389A (zh) * 2022-11-21 2023-03-07 阳春新钢铁有限责任公司 一种新型环保冶金渣料处理方法
CN115747389B (zh) * 2022-11-21 2024-02-09 阳春新钢铁有限责任公司 一种环保冶金渣料处理方法

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