CN102392139A - Technology for treating cold aluminous ash by utilization of tilting furnace - Google Patents
Technology for treating cold aluminous ash by utilization of tilting furnace Download PDFInfo
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- CN102392139A CN102392139A CN2011103761227A CN201110376122A CN102392139A CN 102392139 A CN102392139 A CN 102392139A CN 2011103761227 A CN2011103761227 A CN 2011103761227A CN 201110376122 A CN201110376122 A CN 201110376122A CN 102392139 A CN102392139 A CN 102392139A
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The invention relates to a technology for treating cold aluminous ash by the utilization of a tilting furnace and is characterized in that the treatment technology comprises the following steps of: crushing the cold aluminous ash, screening to coarse grains for later use; adding a special fluxing agent which accounts for 5-20% of the total addition amount into the tilting furnace with a heating device arranged on the furnace mouth, wherein the special fluxing agent is made from 90-96% of chloride and 4-10% of fluoride; turning on a combustor, beginning heating, simultaneously rotating the tilting furnace, adding the cold aluminous ash coarse grains which account for 80-95% of the total addition amount after the special fluxing agent is melted in the tilting furnace; rotating and heating until an aluminium alloy liquid and the ash in the cold aluminous ash are separated, the aluminium alloy liquid is collected on the bottom and the ash flows on the surface of the aluminium alloy liquid, pouring out the aluminium liquid, and pouring out solid ash while rotating the tilting furnace. The special fluxing agent is used to improve the interfacial tension between the ash and the aluminium alloy and make it easy to separate the ash and the aluminium alloy. In the meantime, the covered aluminium will not be further oxidized. Therefore, the technology provided by the invention helps raise metal recovery rate and is suitable for scale production.
Description
Technical field
The present invention relates to a kind of rotary kiln that utilizes and handle the cindery technology of cold aluminium, particularly a kind of with the cindery technology of cold conditions aluminium that produces in the production of rotary kiln processing duraluminum, belong to the duraluminum manufacture field.
Background technology
At present, handle the aluminium lime-ash that produces in the duraluminum, the one, through overcooling, separation, enrichment becomes to contain the higher cold lime-ash of aluminium, reclaims wherein al alloy component with crucible melting again; The 2nd, hot down with swing bucket or press the slag machine or stir device processes such as grey machine and reclaim; There is following problem in these methods: the 1st, and crucible oven is handled cold ash, and throughput is little, can not adapt to scale prodn, pollutes bigger simultaneously; The 2nd, swing bucket can only be handled hot lime-ash, can't handle for cold lime-ash; The 3rd, press the slag machine or stir grey machine also to be difficult to adapt to scale prodn.
Summary of the invention
The object of the present invention is to provide a kind of rotary kiln that utilizes to handle the cindery technology of cold aluminium.
The technical scheme that the present invention adopts is: the step of its treatment process is following:
(1), cold aluminium lime-ash is broken, sieve into coarse particles subsequent use;
The special-purpose flux that will account for total throwing amount 5%-20% (2), earlier adds in the rotary kiln, and the fire door of described rotary kiln is provided with heating unit; Described special-purpose flux is made up of the raw material of following per-cent: muriate 90-96%, fluorochemical 4-10%;
(3), refire the burner of heating unit, begin heating, rotate back to converter simultaneously, treat the special-purpose flux melts in the rotary kiln after, add cold aluminium lime-ash coarse particles, the coarse grained add-on of cold aluminium lime-ash is total throwing amount 80-95%;
(4), be further rotated rotary kiln, to the rotary kiln heating, the aluminum alloy melt in cold aluminium lime-ash separates with lime-ash simultaneously; Aluminum alloy melt combines in the bottom, and lime-ash floats on aluminum alloy melt when surface, stops the rotation and heats; Toppling over the revolution body of heater descends fire door; Pour out aluminium liquid earlier, pour out the solid ash, accomplish an operational cycle while rotate back to converter again.
Described special-purpose flux is made up of the raw material of following per-cent: muriate 95%, fluorochemical 5%.
Described per-cent is weight percentage.
The present invention has improved the IT of lime-ash and duraluminum owing to the effect of flux, makes ash be easy to separate with aluminium; The unlikely further oxidation of flux aluminium coating simultaneously, thus metal recovery rate improved, and throughput is big simultaneously; Production efficiency is high, and has reduced pollution, is suitable for scale prodn.
Description of drawings
Fig. 1 is the process flow sheet of the embodiment of the invention 1.
Fig. 2 is the rotary kiln synoptic diagram of the embodiment of the invention 1.
Embodiment
The present invention can do further description to the present invention through following embodiment through the technological practical implementation of explaining in the technical scheme, yet scope of the present invention is not limited to following embodiment.
Embodiment 1:
When using the present invention to handle cold aluminium lime-ash, the special-purpose flux that will account for total throwing amount 10% earlier adds rotary kiln, and this special use flux is made up of the Industrial Salt of 95% mixed chloride and 5% fluorochemical.Refire burner and begin heating, make body of heater rotation simultaneously, treat the flux fusing after; Adding accounts for total throwing and measures 90% cold aluminium lime-ash coarse particles, and behind rotating furnace limit, the limit heating certain hour, wherein aluminum alloy melt separates with lime-ash; Aluminum alloy melt is enriched in the bottom, and lime-ash floats on aluminium liquid surface.At this moment, stop the rotation and heat, the body of heater that fascinates is earlier poured out aluminium liquid, and rotating furnace limit in limit is toppled over and the solid ash again, accomplishes an operational cycle.
Described rotary kiln is as shown in Figure 2; It comprises furnace tube 1, shifting bearing 2, bell 3 and motor 5, and the stack shell of described furnace tube 1 is lain on one's side on shifting bearing 2, and shifting bearing 2 is connected with hydro-cylinder 4; The stack shell below of furnace tube 1 is provided with carrying roller 6; The tube end shell of furnace tube 1 is provided with gear ring, and motor 5 is connected with support, and motor 5 is connected with the gear ring of furnace tube 1 through gear.
The fire door of described furnace tube 1 is connected with movable bell 3 through swinging strut, and bell 3 is provided with burner 7 and smoke exhaust pipe 8.
Furnace tube 1 leans on hydro-cylinder 4 up-down shifting bearings 2 to realize the up-down of fire door; Provide power to make furnace tube 1 by motor 5 by the moving forward and reverse rotation of carrying roller 6 holders; Burner 7 and smoke exhaust pipe 8 are installed on the bell 3; The fire door top is provided with extraction hood 9, and there is the container 10 of aluminium alloy melt or dried aluminium ash the below.
Claims (2)
1. one kind is utilized rotary kiln to handle the cindery technology of cold aluminium, it is characterized in that the step of its treatment process is following:
(1), cold aluminium lime-ash is broken, sieve into coarse particles subsequent use;
The special-purpose flux that will account for total throwing amount 5%-20% (2), earlier adds in the rotary kiln, and the fire door of described rotary kiln is provided with heating unit; Described special-purpose flux is made up of the raw material of following per-cent: muriate 90-96%, fluorochemical 4-10%;
(3), refire the burner of heating unit, begin heating, rotate back to converter simultaneously, treat the special-purpose flux melts in the rotary kiln after, add cold aluminium lime-ash coarse particles, the coarse grained add-on of cold aluminium lime-ash is total throwing amount 80-95%;
(4), be further rotated rotary kiln, to the rotary kiln heating, the aluminum alloy melt in cold aluminium lime-ash separates with lime-ash simultaneously; Aluminum alloy melt combines in the bottom, and lime-ash floats on aluminum alloy melt when surface, stops the rotation and heats; Toppling over the revolution body of heater descends fire door; Pour out aluminium liquid earlier, pour out the solid ash, accomplish an operational cycle while rotate back to converter again;
Described per-cent is weight percentage.
2. a kind of rotary kiln that utilizes according to claim 1 is handled the cindery technology of cold aluminium, and it is characterized in that: described special-purpose flux is made up of the raw material of following per-cent: muriate 95%, fluorochemical 5%; Described per-cent is weight percentage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103761227A CN102392139A (en) | 2011-11-23 | 2011-11-23 | Technology for treating cold aluminous ash by utilization of tilting furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103761227A CN102392139A (en) | 2011-11-23 | 2011-11-23 | Technology for treating cold aluminous ash by utilization of tilting furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102392139A true CN102392139A (en) | 2012-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103761227A Pending CN102392139A (en) | 2011-11-23 | 2011-11-23 | Technology for treating cold aluminous ash by utilization of tilting furnace |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160693A (en) * | 2013-03-12 | 2013-06-19 | 焦作万方铝业股份有限公司 | Method for aluminum ash treatment and recycling use |
| CN104962748A (en) * | 2015-06-30 | 2015-10-07 | 苏州卡迪亚铝业有限公司 | Method for efficiently separating and recycling metallic aluminum from aluminum ash |
| CN106048241A (en) * | 2016-08-01 | 2016-10-26 | 中冶节能环保有限责任公司 | Method and device for recycling metal aluminum in hot aluminum ash and preparing steelmaking auxiliary material from smelted slag |
| CN110042250A (en) * | 2019-05-24 | 2019-07-23 | 衢州市荣胜环保科技有限公司 | Cold aluminium slag recycling utilization system and cold aluminium slag regeneration method |
| CN111471866A (en) * | 2020-05-29 | 2020-07-31 | 重庆新格环保科技有限公司 | Method for recycling and harmlessly treating waste aluminum raw material |
| CN111961874A (en) * | 2020-09-14 | 2020-11-20 | 东北大学 | Separating agent for extracting aluminum from pyrogenic process aluminum ash and preparation and use methods thereof |
| CN115261651A (en) * | 2022-07-28 | 2022-11-01 | 苏州仓松金属制品有限公司 | Method for extracting aluminum alloy from aluminum ash |
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| CN1695831A (en) * | 2004-05-14 | 2005-11-16 | 高志远 | Method for processing and using aluminium grit from plant of chromic salt |
| CN101845558A (en) * | 2010-02-09 | 2010-09-29 | 中南大学 | Aluminum slag separating agent and application of same in process of recycling aluminum from aluminum slag |
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2011
- 2011-11-23 CN CN2011103761227A patent/CN102392139A/en active Pending
Patent Citations (2)
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| CN1695831A (en) * | 2004-05-14 | 2005-11-16 | 高志远 | Method for processing and using aluminium grit from plant of chromic salt |
| CN101845558A (en) * | 2010-02-09 | 2010-09-29 | 中南大学 | Aluminum slag separating agent and application of same in process of recycling aluminum from aluminum slag |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103160693A (en) * | 2013-03-12 | 2013-06-19 | 焦作万方铝业股份有限公司 | Method for aluminum ash treatment and recycling use |
| CN104962748A (en) * | 2015-06-30 | 2015-10-07 | 苏州卡迪亚铝业有限公司 | Method for efficiently separating and recycling metallic aluminum from aluminum ash |
| CN106048241A (en) * | 2016-08-01 | 2016-10-26 | 中冶节能环保有限责任公司 | Method and device for recycling metal aluminum in hot aluminum ash and preparing steelmaking auxiliary material from smelted slag |
| CN106048241B (en) * | 2016-08-01 | 2018-08-07 | 中冶节能环保有限责任公司 | The method and apparatus that hot aluminium ash metal alum recovery and slag prepare steelmaking ingredient |
| CN110042250A (en) * | 2019-05-24 | 2019-07-23 | 衢州市荣胜环保科技有限公司 | Cold aluminium slag recycling utilization system and cold aluminium slag regeneration method |
| CN110042250B (en) * | 2019-05-24 | 2024-04-30 | 衢州市荣胜环保科技有限公司 | Cold aluminum slag regeneration recycling system and cold aluminum slag regeneration method |
| CN111471866A (en) * | 2020-05-29 | 2020-07-31 | 重庆新格环保科技有限公司 | Method for recycling and harmlessly treating waste aluminum raw material |
| CN111961874A (en) * | 2020-09-14 | 2020-11-20 | 东北大学 | Separating agent for extracting aluminum from pyrogenic process aluminum ash and preparation and use methods thereof |
| CN115261651A (en) * | 2022-07-28 | 2022-11-01 | 苏州仓松金属制品有限公司 | Method for extracting aluminum alloy from aluminum ash |
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Application publication date: 20120328 |