CN117300137A - A system and method for melt impact disc crushing, granulation and waste heat recovery - Google Patents
A system and method for melt impact disc crushing, granulation and waste heat recovery Download PDFInfo
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- CN117300137A CN117300137A CN202311266718.0A CN202311266718A CN117300137A CN 117300137 A CN117300137 A CN 117300137A CN 202311266718 A CN202311266718 A CN 202311266718A CN 117300137 A CN117300137 A CN 117300137A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/06—Metallic powder characterised by the shape of the particles
- B22F1/065—Spherical particles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/10—Arrangements for using waste heat
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0824—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid
- B22F2009/0828—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid with a specific atomising fluid with water
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0888—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
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- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention provides a system and a method for crushing, granulating and waste heat recovery of a melt impact disc, wherein the system comprises a crushing and granulating device and a waste heat recovery device; the crushing and granulating device comprises a granulating silo, a crushing and granulating assembly, a melt storage assembly and a water mist cooling assembly; the waste heat recovery device comprises a moving bed heat exchanger, a blower and a waste heat boiler. The melt flows out from the nozzle of the tundish and falls down to impact the disc, a liquid film is spread on the disc, the liquid film is continuously spread in the air after being separated from the edge of the disc, meanwhile, the liquid film is gradually instable and finally broken into molten drops, the molten drops are cooled by water mist in the flying process, the molten drops are solidified into a thin shell from outside to inside, and high-temperature particles fall into a moving bed heat exchanger from a particle outlet for heat exchange.
Description
Technical Field
The invention belongs to the technical field of granulation production and waste heat recovery, and particularly relates to a system and a method for crushing granulation and waste heat recovery of a melt impact disc.
Background
The granulating process is a production process which is beneficial to the storage, transportation and use of products, and has demands in the industries of metallurgy, chemical industry, medicine and the like. Taking iron alloy mainly used as an iron and steel smelting additive as an example, the high-quality iron alloy has uniform components and few impurities, and has certain granularity requirement when in use, the smaller granularity is favorable for quick melting and uniform addition, but the iron alloy cannot pass through a slag layer due to the excessively small granularity. The existing common iron alloy granulating production mode is to directly cast iron alloy melt into a casting mould or a sand pit, stand until the melt is cooled and solidified, then crush the melt by adopting machinery or manpower, and collect the obtained particles for storage or secondary processing. The method is popular due to simple process, but has the advantages of melt segregation phenomenon after casting, uneven product quality, time and labor waste in the crushing process, high product pulverization loss rate, serious noise and pollution, and serious waste heat waste caused by standing and cooling of ferroalloy melt at a temperature above 1300 ℃.
In order to improve the granulating production mode of ferroalloy, researchers at home and abroad develop granulating processes such as: the continuous casting and continuous breaking process is that alloy melt is drawn into casting blanks through the continuous casting process, and when the casting blanks are conveyed to a breaking area, a continuous roller breaks the solidified casting blanks into particles, alloy particles with high hardness and lower pulverization rate can be prepared by the method, the production efficiency is high, but the problems of drawing and breaking success rate are solved, and the defects of breaking abrasion and noise pollution are also caused; the direct casting process is characterized in that the molten liquid is directly cast in an ingot mould with a certain size, conveyed to a cooling area by a conveyor belt, and solidified into particles through air cooling and water cooling, the method is convenient for controlling the particle size of the production, has low pulverization rate, still has certain component segregation, and has larger size for coping with overflow and adhesion of the molten liquid; the Blobulator process, the melt flows into the inclined water tank, is crushed and cooled and solidified under the action of surface tension and water flow in the tank, and the particles flow into the separating mechanism along with the water flow to be dehydrated and collected, so that cake-shaped particles with the diameter of 20-50 mm can be prepared, the pulverization rate is low, and the alloy waste heat cannot be efficiently recovered; the centrifugal granulating process, the molten liquid flows into a rotary cup or a perforated rotary drum, under the action of centrifugal force, the molten liquid is spread and thrown out, split into fine molten drops, and cool and solidify into particles in the flying process, the production efficiency is high, the granularity is well controlled, but the production particles are concentrated to 1-5 mm when the rotary cup is adopted, the production particles are concentrated to 4-13 mm when the rotary drum is adopted, the particle size is small, and the phenomena of hole blockage and hole partition wall crack exist when the rotary drum is adopted; according to the GRANHOT process, molten liquid flows out from a nozzle, impacts a fireproof ceramic nozzle below, spreads and breaks the molten liquid into molten drops, and then the molten drops are cooled and solidified in a water tank.
In view of the foregoing, there is a need for a system and method for granulating and recovering waste heat that has good granulating effect, high production efficiency, low pollution, and is advantageous for efficient recovery of waste heat, and that can be applied to various industries having similar granulating production requirements, and not limited to metallurgical industry applications.
Disclosure of Invention
Aiming at the problems in the existing granulating production process, the invention provides a system and a method for crushing and granulating by using a melt impact disc and recovering waste heat, which can realize crushing and granulating of a melt with low cost and low pollution and can efficiently recover the waste heat of particles.
The technical scheme adopted for solving the technical problems is as follows: a melt impact disc crushing and granulating and waste heat recovery system comprises a crushing and granulating device and a waste heat recovery device;
the crushing and granulating device comprises a granulating silo, a crushing and granulating assembly, a melt storage assembly and a water mist cooling assembly; the granulating silo comprises an inner cylinder and a collecting bin arranged outside the inner cylinder, wherein the inner cylinder consists of a bottom surface and side walls, annular particle outlets are formed in the side walls of the inner cylinder, and the collecting bin is of a funnel-shaped structure; the crushing and granulating assembly comprises a support column arranged at the center shaft of the inner cylinder and an impact disc arranged on the support column; the melt storage assembly is arranged above the impact disc and comprises a tundish, and a downward nozzle is arranged at the bottom of the tundish; the water mist cooling assembly comprises a water pipe, a water tank, a water pump and an atomization nozzle which are sequentially connected, wherein the water pipe is connected with the inner cylinder and the water tank, and the atomization nozzle is annularly arranged at the upper part of the granulating silo and is used for spraying water mist into the inner cylinder of the granulating silo; the upper part of the collecting bin is connected with the side wall of the inner cylinder, and the bottom of the collecting bin is provided with a high-temperature particle outlet;
the waste heat recovery device comprises a moving bed heat exchanger, a blower and a waste heat boiler; the high-temperature particle inlet at the top of the moving bed heat exchanger is connected with the high-temperature particle outlet of the collecting bin, the bottom of the moving bed heat exchanger is provided with a particle outlet, and the side wall of the moving bed heat exchanger is respectively provided with a cold air inlet and a hot air outlet; the cold air inlet is connected with the blower, and the hot air outlet is connected with the waste heat boiler.
Further, the width of the annular particle outlet on the side wall of the granulating silo device is 0.2-1.5 m.
Further, the diameter of the nozzle of the tundish is 20-200 mm.
Further, the support column comprises an adjustable height column and a fixed height column connected with the adjustable height column, wherein the height difference between the tundish nozzle and the impact disc is 0.2-1.5 m, and the adjustable height column is adopted for adjustment.
Further, the diameter of the impact disc is 50-500 mm, and the inward inclination angle between the surface of the disc and the horizontal plane is 0-45 degrees.
Further, the impact disc surface is any one of the following structures:
A. 1-5 concentric annular protrusions are arranged on the surface of the impact disc, the width of each protrusion is 2-20 mm, and the height of each protrusion is 2-20 mm;
B. 1-5 concentric annular depressions are arranged on the surface of the impact disc, the width of each depression is 2-20 mm, and the depth of each depression is 2-20 mm;
C. the surface of the impact disc is provided with dot-shaped protrusions distributed along 1-5 concentric circles, the width of the protrusions is 2-20 mm, and the height of the protrusions is 2-20 mm;
D. the surface of the impact disc is provided with dot-shaped depressions distributed along 1-5 concentric circles, the width of the depressions is 2-20 mm, and the depth is 2-20 mm.
Further, a heat exchange water pipe for exchanging heat with the high-temperature particles is arranged in the moving bed heat exchanger.
Further, the cold air inlet of the moving bed heat exchanger is arranged at the lower part of one side wall, and the hot air outlet is arranged at the upper part of the opposite side wall.
The invention also provides a method for crushing, granulating and recovering waste heat of a melt impact disc based on the system, which comprises the following steps: the melt flows out from the nozzle of the tundish to fall and impact the disc, a liquid film is spread on the disc, the liquid film is continuously spread in the air after being separated from the edge of the disc, meanwhile, the liquid film is gradually instable and finally crushed into molten drops with the diameter of 2-50 mm, the molten drops are cooled by water mist in the flying process, the molten drops are solidified into a thin shell with the thickness of 1/10-1/3 of the diameter from outside to inside, and high-temperature particles fall into a moving bed heat exchanger from a particle outlet for heat exchange.
Compared with the prior art, the invention has the beneficial effects that:
in the system for crushing, granulating and recovering waste heat of the melt impact disc and the method for crushing, granulating and recovering waste heat of the melt impact disc by using the system, raw materials fall down to impact to form a liquid film when being in a melt state, so that the raw materials are crushed into spherical particles in a destabilizing way, the components of the prepared particles are uniform, the granularity is easy to control, the pulverization rate is very low, no extra energy is consumed in the crushing process, the operation flow is simple and rapid, the environment is friendly, and meanwhile, the prepared particles directly enter a heat exchanger in a high-temperature state, so that a large amount of particle waste heat can be effectively recovered, the production operation cost is obviously reduced, and the industry competitiveness is enhanced.
Drawings
FIG. 1 is a schematic diagram of a system for melt impact disc crush granulation and waste heat recovery;
FIG. 2 is a schematic view of a planar disk structure;
FIG. 3 is a schematic view of an inward tilting disk structure;
FIG. 4 is a schematic view of an annular projecting disk structure;
FIG. 5 is a schematic view of an annular recessed disk structure;
FIG. 6 is a schematic view of a punctiform raised disk structure;
FIG. 7 is a schematic view of a punctiform recessed disk structure;
wherein, 1-tundish; 2-supporting columns; 3-impacting the disc; 4-granulating a silo; 5-atomizing spray heads; 6-a water pipe; 7-a water tank; 8-a water pump; 9-a moving bed heat exchanger; 10-a heat exchange water pipe; 11-a blower; 12-an exhaust-heat boiler; 13-a planar disc; 14-an inward tilting disk; 15-an annular protruding disc; 16-an annular recessed disc; 17-punctiform protruding discs; 18-punctiform concave discs.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, taking ferrosilicon as an example, a system for crushing, granulating and recovering waste heat of a melt impact disc comprises a crushing and granulating device and a waste heat recovering device;
the crushing and granulating device comprises a granulating silo 4, a crushing and granulating assembly, a melt storage assembly and a water mist cooling assembly; the granulating silo comprises an inner cylinder and a collecting bin arranged outside the inner cylinder, wherein the inner cylinder consists of a bottom surface and side walls, annular particle outlets are formed in the side walls of the inner cylinder, and the collecting bin is of a funnel-shaped structure; a plurality of supporting rods can be arranged between the bottom of the inner cylinder and the inner wall of the collecting bin to support the inner cylinder, the number and the positions of the supporting rods can be arranged according to specific conditions, and the crushing and granulating assembly comprises a supporting column 2 arranged at the center axis of the inner cylinder and an impact disc 3 arranged on the supporting column; the melt storage assembly is arranged above the impact disc and comprises a tundish 1, and the bottom of the tundish is provided with a downward nozzle; the water mist cooling assembly comprises a water pipe 6, a water tank 7, a water pump 8 and an atomizing nozzle 5 which are sequentially connected, wherein the water pipe is connected with the inner cylinder and the water tank and is used for circulating water delivery, the atomizing nozzle is annularly arranged at the upper part of the granulating silo and is used for spraying water mist into the inner cylinder of the granulating silo, cooling molten drops to solidify into a thin shell, and cooling heated supporting columns; the upper part of the collecting bin is connected with the side wall of the inner cylinder, and the bottom of the collecting bin is provided with a high-temperature particle outlet;
the waste heat recovery device comprises a moving bed heat exchanger 9, a blower 11 and a waste heat boiler 12; the high-temperature particle inlet at the top of the moving bed heat exchanger is connected with the high-temperature particle outlet of the collecting bin, the bottom of the moving bed heat exchanger is provided with a particle outlet, and the side wall of the moving bed heat exchanger is respectively provided with a cold air inlet and a hot air outlet; the cold air inlet is connected with the blower, and the hot air outlet is connected with the waste heat boiler.
Wherein, a heat exchange water pipe 10 for exchanging heat with the high-temperature particles is arranged in the moving bed heat exchanger.
The cold air inlet of the moving bed heat exchanger is arranged at the lower part of one side wall, and the hot air outlet is arranged at the upper part of the opposite side wall. The air blower blows cold air into the heat exchanger to exchange heat with the high-temperature particles, and the obtained hot air enters the waste heat boiler from a hot air outlet above the side of the heat exchanger to recover waste heat.
The width of the annular particle outlet on the side wall of the granulating silo device is 1m.
Wherein the diameter of the tundish nozzle is 60mm.
The support column comprises an adjustable height column and a fixed height column connected with the adjustable height column, wherein the height difference between the tundish nozzle and the impact disc is 0.6m, and the adjustable height column is adopted for adjustment.
The impact disc 3 is an inward-inclined disc 14, the structure schematic diagram is shown in fig. 3, the diameter of the disc is 150mm, and the inward-inclined angle between the surface of the disc and the horizontal plane is 30 degrees.
As another embodiment of the present invention, unlike embodiment 1, the impact disc 3 is a planar disc 13, and the schematic structural view is shown in fig. 2.
As another embodiment of the present invention, unlike embodiment 1, the impact disk 3 is an annular protruding disk 15, and the schematic structure is shown in fig. 4.
As another embodiment of the present invention, unlike embodiment 1, the impact disc 3 is an annular concave disc 16, and the schematic structural view is shown in fig. 5.
As another embodiment of the present invention, unlike embodiment 1, the impact disk 3 is a punctiform raised disk 17, and the schematic structure is shown in fig. 6.
As another embodiment of the present invention, unlike embodiment 1, the impact disc 3 is a punctiform recessed disc 18, and the schematic structural view is shown in fig. 7.
The melt is impacted on impact discs with different structures, the diameters and the spreading conditions of the generated molten drops are different, and the method for crushing, granulating and recovering waste heat of the ferrosilicon alloy melt by using the system can be selected according to the implementation conditions, and comprises the following steps:
the ferrosilicon melt at 1400 ℃ flows out from a nozzle of a tundish 1, falls and impacts onto an impact disc 3, the melt is deformed and spread on the disc to form a liquid film, the liquid film is continuously spread in the air after being separated from the disc, the liquid film is broken into droplets with the diameter of 2-35 mm along with the development of instability of the liquid film, the droplets continuously fly in a granulating silo 4, pass through a water mist area formed by spraying an atomizing nozzle 5, are rapidly cooled in the area, are solidified into a thin shell with the thickness of 1/10-1/3 of the diameter from outside to inside, after the droplets are separated from the water mist area, particles cooled to 800-1000 ℃ fly out from a particle outlet of the granulating silo 4, roll into a moving bed heat exchanger 9, high-temperature particles are driven by gravity to flow downwards and are subjected to gradual heat exchange and cooling, the particles cooled to 70-130 ℃ after sufficient heat exchange are discharged from an outlet below the moving bed heat exchanger 9, and fall into a collecting container or are carried out on a conveyor belt. A heat exchange water pipe 10 is arranged in the moving bed heat exchanger 9, a blower 11 is arranged at the side lower part to blow air to exchange heat together, and hot air obtained by heat exchange enters a waste heat boiler 12 from a hot air outlet at the side upper part of the moving bed heat exchanger 9 to recover waste heat. The non-evaporated part of the water mist sprayed by the atomizing nozzle 5 is accumulated at the bottom of the granulating silo 4, flows back into the water tank 7 through the water pipe 6, and is pumped out by the water pump 8 to be supplied to the atomizing nozzle 5 for continuous use.
The technical scheme of the invention is explained in the technical scheme, the protection scope of the invention cannot be limited by the technical scheme, and any changes and modifications to the technical scheme according to the technical substance of the invention belong to the protection scope of the technical scheme of the invention.
Claims (9)
1. A melt impact disc crushing granulation and waste heat recovery system is characterized in that: comprises a crushing granulating device and a waste heat recovery device;
the crushing and granulating device comprises a granulating silo, a crushing and granulating assembly, a melt storage assembly and a water mist cooling assembly; the granulating silo comprises an inner cylinder and a collecting bin arranged outside the inner cylinder, wherein the inner cylinder consists of a bottom surface and side walls, annular particle outlets are formed in the side walls of the inner cylinder, and the collecting bin is of a funnel-shaped structure; the crushing and granulating assembly comprises a support column arranged at the center shaft of the inner cylinder and an impact disc arranged on the support column; the melt storage assembly is arranged above the impact disc and comprises a tundish, and a downward nozzle is arranged at the bottom of the tundish; the water mist cooling assembly comprises a water pipe, a water tank, a water pump and an atomization nozzle which are sequentially connected, wherein the water pipe is connected with the inner cylinder and the water tank, and the atomization nozzle is annularly arranged at the upper part of the granulating silo and is used for spraying water mist into the inner cylinder of the granulating silo; the upper part of the collecting bin is connected with the side wall of the inner cylinder, and the bottom of the collecting bin is provided with a high-temperature particle outlet;
the waste heat recovery device comprises a moving bed heat exchanger, a blower and a waste heat boiler; the high-temperature particle inlet at the top of the moving bed heat exchanger is connected with the high-temperature particle outlet of the collecting bin, the bottom of the moving bed heat exchanger is provided with a particle outlet, and the side wall of the moving bed heat exchanger is respectively provided with a cold air inlet and a hot air outlet; the cold air inlet is connected with the blower, and the hot air outlet is connected with the waste heat boiler.
2. The system for melt impact disc breaker granulation and waste heat recovery of claim 1, wherein: the width of the annular particle outlet on the side wall of the granulating silo device is 0.2-1.5 m.
3. The system for melt impact disc breaker granulation and waste heat recovery of claim 1, wherein: the diameter of the nozzle of the tundish is 20-200 mm.
4. The system for melt impact disc breaker granulation and waste heat recovery of claim 1, wherein: the support column comprises an adjustable height column and a fixed height column connected with the adjustable height column, wherein the height difference between the tundish nozzle and the impact disc is 0.2-1.5 m, and the adjustable height column is adopted for adjustment.
5. The system for melt impact disc breaker granulation and waste heat recovery of claim 1, wherein: the diameter of the impact disc is 50-500 mm, and the inward inclination angle between the surface of the disc and the horizontal plane is 0-45 degrees.
6. The system for melt impact disc breaker granulation and waste heat recovery of claim 5, wherein: the surface of the impact disc is any one of the following structures:
A. 1-5 concentric annular protrusions are arranged on the surface of the impact disc, the width of each protrusion is 2-20 mm, and the height of each protrusion is 2-20 mm;
B. 1-5 concentric annular depressions are arranged on the surface of the impact disc, the width of each depression is 2-20 mm, and the depth of each depression is 2-20 mm;
C. the surface of the impact disc is provided with dot-shaped protrusions distributed along 1-5 concentric circles, the width of the protrusions is 2-20 mm, and the height of the protrusions is 2-20 mm;
D. the surface of the impact disc is provided with dot-shaped depressions distributed along 1-5 concentric circles, the width of the depressions is 2-20 mm, and the depth is 2-20 mm.
7. The system for melt impact disc breaker granulation and waste heat recovery of claim 1, wherein: and a heat exchange water pipe for exchanging heat with the high-temperature particles is arranged in the moving bed heat exchanger.
8. The system for melt impact disc breaker granulation and waste heat recovery of claim 1, wherein: the cold air inlet of the moving bed heat exchanger is arranged at the lower part of one side wall, and the hot air outlet is arranged at the upper part of the opposite side wall.
9. A method for melt impact disc breaking granulation and waste heat recovery based on the system of any one of claims 1 to 8, characterized in that:
comprising the following steps: the melt flows out from the nozzle of the tundish to fall and impact the disc, a liquid film is spread on the disc, the liquid film is continuously spread in the air after being separated from the edge of the disc, meanwhile, the liquid film is gradually instable and finally crushed into molten drops with the diameter of 2-50 mm, the molten drops are cooled by water mist in the flying process, the molten drops are solidified into a thin shell with the thickness of 1/10-1/3 of the diameter from outside to inside, and high-temperature particles fall into a moving bed heat exchanger from a particle outlet for heat exchange.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118594380A (en) * | 2024-03-13 | 2024-09-06 | 西安交通大学 | A centrifugal granulation device capable of preventing high temperature melt from slipping and sticking and clogging |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192705A (en) * | 1992-12-25 | 1994-07-12 | Agency Of Ind Science & Technol | Production of rapidly solidified article |
| CN102149454A (en) * | 2008-06-27 | 2011-08-10 | 联邦科学及工业研究组织 | Rotary atomizers for atomizing molten materials |
| CN102827969A (en) * | 2012-09-06 | 2012-12-19 | 西安交通大学 | Afterheat recovery system and method of dry granulating liquid slag |
| CN104946826A (en) * | 2015-06-05 | 2015-09-30 | 中国科学院力学研究所 | Metallurgical slag waste heat recovery equipment and method |
| CN208426996U (en) * | 2018-02-02 | 2019-01-25 | 山东钢铁股份有限公司 | A kind of high stove fire slag particle makeup is set and processing unit |
| CN111020074A (en) * | 2019-12-04 | 2020-04-17 | 西安交通大学 | A liquid slag waste heat recovery device capable of enhancing slag heat exchange and its operation method |
| CN113070480A (en) * | 2021-03-18 | 2021-07-06 | 中国科学院力学研究所 | A carousel that is used for metal centrifugation atomizing powder process to have a disturbance structure |
| CN113877697A (en) * | 2021-10-12 | 2022-01-04 | 东北大学 | Melt impact crushing and granulating system and method |
-
2023
- 2023-09-28 CN CN202311266718.0A patent/CN117300137A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06192705A (en) * | 1992-12-25 | 1994-07-12 | Agency Of Ind Science & Technol | Production of rapidly solidified article |
| CN102149454A (en) * | 2008-06-27 | 2011-08-10 | 联邦科学及工业研究组织 | Rotary atomizers for atomizing molten materials |
| CN102827969A (en) * | 2012-09-06 | 2012-12-19 | 西安交通大学 | Afterheat recovery system and method of dry granulating liquid slag |
| CN104946826A (en) * | 2015-06-05 | 2015-09-30 | 中国科学院力学研究所 | Metallurgical slag waste heat recovery equipment and method |
| CN208426996U (en) * | 2018-02-02 | 2019-01-25 | 山东钢铁股份有限公司 | A kind of high stove fire slag particle makeup is set and processing unit |
| CN111020074A (en) * | 2019-12-04 | 2020-04-17 | 西安交通大学 | A liquid slag waste heat recovery device capable of enhancing slag heat exchange and its operation method |
| CN113070480A (en) * | 2021-03-18 | 2021-07-06 | 中国科学院力学研究所 | A carousel that is used for metal centrifugation atomizing powder process to have a disturbance structure |
| CN113877697A (en) * | 2021-10-12 | 2022-01-04 | 东北大学 | Melt impact crushing and granulating system and method |
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| CN118594380A (en) * | 2024-03-13 | 2024-09-06 | 西安交通大学 | A centrifugal granulation device capable of preventing high temperature melt from slipping and sticking and clogging |
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