CN1256197C - Harmless treating method for waste tank lining of aluminium electrolytic bath - Google Patents
Harmless treating method for waste tank lining of aluminium electrolytic bath Download PDFInfo
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- CN1256197C CN1256197C CN 200410042564 CN200410042564A CN1256197C CN 1256197 C CN1256197 C CN 1256197C CN 200410042564 CN200410042564 CN 200410042564 CN 200410042564 A CN200410042564 A CN 200410042564A CN 1256197 C CN1256197 C CN 1256197C
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- waste
- aluminium electrolytic
- electrolytic tank
- innocent treatment
- roasting
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- 239000002699 waste material Substances 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 title claims abstract description 42
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 32
- 239000004411 aluminium Substances 0.000 title claims abstract description 30
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 29
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000000463 material Substances 0.000 claims abstract description 31
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 16
- 239000011737 fluorine Substances 0.000 claims abstract description 10
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 10
- 239000002802 bituminous coal Substances 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 6
- 239000011819 refractory material Substances 0.000 claims abstract description 6
- 239000000446 fuel Substances 0.000 claims abstract description 5
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 5
- 239000011707 mineral Substances 0.000 claims abstract description 5
- 239000002245 particle Substances 0.000 claims description 21
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 17
- 239000003546 flue gas Substances 0.000 claims description 17
- 235000019738 Limestone Nutrition 0.000 claims description 14
- 239000006028 limestone Substances 0.000 claims description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000001179 sorption measurement Methods 0.000 claims description 9
- 238000005406 washing Methods 0.000 claims description 9
- 239000010881 fly ash Substances 0.000 claims description 7
- 239000004576 sand Substances 0.000 claims description 5
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 claims description 4
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical compound [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 3
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 3
- 238000005245 sintering Methods 0.000 claims description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 2
- 239000002893 slag Substances 0.000 abstract description 18
- 239000007787 solid Substances 0.000 abstract description 18
- 239000002994 raw material Substances 0.000 abstract description 9
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 8
- 230000007613 environmental effect Effects 0.000 abstract description 8
- 239000000292 calcium oxide Substances 0.000 abstract description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 4
- 239000000654 additive Substances 0.000 abstract description 3
- 230000000996 additive effect Effects 0.000 abstract description 3
- 238000005868 electrolysis reaction Methods 0.000 abstract description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000004568 cement Substances 0.000 abstract description 2
- 239000000376 reactant Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003792 electrolyte Substances 0.000 abstract 3
- 150000002222 fluorine compounds Chemical class 0.000 abstract 2
- 150000002825 nitriles Chemical class 0.000 abstract 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 abstract 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 238000002386 leaching Methods 0.000 abstract 1
- 231100000614 poison Toxicity 0.000 abstract 1
- 230000007096 poisonous effect Effects 0.000 abstract 1
- 238000010517 secondary reaction Methods 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000000779 smoke Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 11
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 5
- 239000002817 coal dust Substances 0.000 description 5
- 239000007921 spray Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 150000004673 fluoride salts Chemical class 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000001698 pyrogenic effect Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
Landscapes
- Processing Of Solid Wastes (AREA)
Abstract
The present invention relates to a harmless method for treating a waste tank lining of an aluminium electrolyte tank, particularly to a harmless method for treating waste inner linings of an electrolyte tank in the process of producing metallic aluminium in an electrolysis mode, particularly all waste tank inner linings of carbon blocks of waste cathodes and waste refractory materials. Minerals containing calcium oxide act as a reactant, materials containing silicon dioxide act as an additive agent, and bituminous coal acts as an additional fuel. The heat treating of the method is carried out in a rotary kiln, tail gas is adsorbed by aluminum oxide, and materials treated carries out a secondary reaction by leaching with calcareous water which can be circularly utilized. In this way, the harmless method for treating the waste tank linings is realized. After the waste tank linings are treated, the contents of soluble fluorides and cyanides in the waste tank linings can be decreased by more than 95 %, the content of the soluble fluorides in solid slag is lower than 50 mg/l, and the content of the cyanides is lower than 1.0 mg/l. The solid slag and smoke gas meets the national environmental protection requirements for emission. The pollution of the waste tank linings is eliminated, the carbon-free and non-poisonous solid slag can be used as raw materials in a cement industry and a refractory industry or be used for paving, and aluminum oxide carrying fluorine returns to the aluminium electrolyte tank to be used.
Description
Technical field
A kind of method for innocent treatment of aluminium electrolytic tank relates to cell lining discarded in a kind of electrolysis production metallic aluminium process, particularly comprises the method for innocent treatment of all waste tank linings of waste cathode carbon block, waste refractory materials.
Background technology
The waste tank lining that produces in the Aluminum Electrolysis Production process contains a large amount of soluble fluoride, cyanide, and directly the air storage atmosphere pollution is sneaked into the river pollution earth surface water source with rainwater; Landfill disposal is contaminated soil again, and with the rainwater polluted underground water that permeates the ground, and the serious harm human health also causes very big harm to animal and plant growth.The pollution problem of waste lining has become one of major issue that influences aluminium industry All-round, Coordinated and Sustainable Development.
About the method for innocent treatment of aluminium electrolytic tank, what former studies was more is that Wet technique is handled waste lining.Adopt Wet technique to handle waste lining, recyclable part carbonaceous material and fluoride salt, but there is its technical barrier that can't overcome in Wet technique: (1) quite a few pollutant is transferred to waste liquid from solid waste, and handling back solution can't qualified discharge, causes secondary pollution; (2) etching problem of treatment facility is difficult to resolve and determines; (3) waste cathode carbon block can only be handled, waste refractory materials can't be handled.Therefore the wet-treating technology can not realize the intact golden harmless treatment of waste lining.
Summary of the invention
The present invention is exactly the deficiency that exists in process aluminum electrolytic groove waste lining at above-mentioned prior art, provide a kind of make waste lining innoxious fully, effectively solve waste lining pollution problem, be easy to the method for innocent treatment of the aluminium electrolytic tank of industrial implementation.
The objective of the invention is to be achieved through the following technical solutions.
A kind of method for innocent treatment of aluminium electrolytic tank is characterized in that its processing procedure is followed successively by: (1) will comprise that the useless cell lining of waste cathode carbon block, waste refractory materials is broken into the particle of particle diameter less than 2mm; (2) in waste lining, allocate lime stone and silica containing material into, the lime stone amount of allocating into is 0.6-1.5 a times of waste lining weight, the 0.1-0.6 that the silica containing material amount of allocating into is a waste lining weight doubly mixes the back and carry out roasting in rotary kiln, and sintering temperature is 650 ℃-1000 ℃; (3) handling back material concentration is that the drip washing of 5%-40% limewash is carried out secondary response, the flue gas alumina adsorption.
A kind of method for innocent treatment of aluminium electrolytic tank is characterized in that lime stone mineral CaO content＞60% that the roasting reaction is allocated into, and granularity is less than 2mm.
A kind of method for innocent treatment of aluminium electrolytic tank is characterized in that SiO in the silica containing material that roasting reaction allocates into
2Content＞40%, granularity is less than 1mm.
A kind of method for innocent treatment of aluminium electrolytic tank is characterized in that it is flyash that silica containing material is allocated in the roasting reaction into.
A kind of method for innocent treatment of aluminium electrolytic tank is characterized in that roasting reaction allocates a kind of or mixture that silica containing material is sand, serpentine, montmorillonite into.
Method roasting additive of the present invention adopts industrial waste flyash, utilized flyash preferably, has reached the purpose of the treatment of wastes with processes of wastes against one another, comprehensive utilization.
A kind of method for innocent treatment of aluminium electrolytic tank is characterized in that roasting is is extra fuel with bituminous coal.
A kind of method for innocent treatment of aluminium electrolytic tank, what it is characterized in that the roasting use is rotary kiln, also available revolution bed or fluidized-bed.
A kind of method for innocent treatment of aluminium electrolytic tank is characterized in that the flue gas carrying alumina fluorine that roasting produces, and returns aluminium cell behind year fluorine and uses.
The method for innocent treatment of waste lining of the present invention, technology advanced person, technology is reliable, is easy to industrialization, and is raw materials used wide with fuel source, low price.Can make after the processing that soluble fluoride and cyanide content descend more than 95% in the waste lining, soluble fluoride content is lower than 50mg/l in the solid slag, and cyanide content is lower than 1.0mg/l, and solid slag and flue gas satisfy the national environmental protection emission request.
The specific embodiment
A kind of method for innocent treatment of aluminium electrolytic tank, its processing procedure is followed successively by: (1) will comprise that the useless cell lining of waste cathode carbon block, waste refractory materials is broken into the particle of particle diameter less than 2mm; (2) in waste lining, allocate lime stone and silica containing material into, the lime stone amount of allocating into is 0.6-1.5 a times of waste lining weight, the 0.1-0.6 that the silica containing material amount of allocating into is a waste lining weight doubly mixes the back and carry out roasting in rotary kiln, and sintering temperature is 650 ℃-1000 ℃; (3) handling back material concentration is that the drip washing of 5%-40% limewash is carried out secondary response, the flue gas alumina adsorption.Lime stone mineral CaO content＞60% that the roasting reaction is allocated into, a degree is less than 2mm.SiO in the silica containing material of allocating into
2Content＞40%, granularity is less than 1mm.Silica containing material is allocated in roasting reaction into to be flyash or to be a kind of or mixture of sand, serpentine, montmorillonite.
Method of the present invention is raw material with the waste lining, with the mineral that contain calcium oxide is reactant, with silica containing material is additive, with bituminous coal is extra fuel, adopt rotary kiln to carry out pyrogenic attack, the tail gas alumina adsorption is handled the back material and is carried out secondary response with limewash drip washing, limewash is recycling, makes the innoxious method of waste lining.Can make after the processing that soluble fluoride and cyanide content descend more than 95% in the waste lining, soluble fluoride content is lower than 50mg/l in the solid slag, and cyanide content is lower than 1.0mg/l, and solid slag and flue gas satisfy the national environmental protection emission request.Eliminated the pollution of waste lining, carbon-free non-toxic solid slag can be used as the raw material of cement industry, refractory industry or is used to pave the way, and fluorinated alumina returns aluminium cell and uses.
Below in conjunction with example method of the present invention is described further.
Embodiment 1
Allocate waste lining 970 grams in the heat treatment of raw materials into, add with particle form less than 2mm; Allocate lime stone 1358 gram (waste lining 1.4 times) into, add with particle form less than 2mm; The flyash amount of allocating into is 242.5 grams (waste lining 0.25 times), adds with the particle form less than 1mm, and three kinds of mixing of materials are even, adds in the rotary kiln with blanking device.Bituminous coal sprays into rotary kiln with the coal dust form; Treatment temperature is controlled at 700 ℃, handles the back material with 10% limewash drip washing, flue gas alumina adsorption.Solvable fluorine content is 41.52mg/l in the final solid slag, and cyanide content is 0.037mg/l, and harmful substance contents is lower than national environmental protection permission discharge standard in solid slag and the flue gas.
Embodiment 2
Allocate waste lining 1210 grams in the heat treatment of raw materials into, add with particle form less than 2mm; Allocate lime stone 1089 gram (waste lining 0.9 times) into, add with particle form less than 2mm; The flyash amount of allocating into is 484 grams (waste lining 0.4 times), adds with the particle form less than 1mm, and three kinds of mixing of materials are even, adds in the rotary kiln with blanking device.Bituminous coal sprays into rotary kiln with the coal dust form; Treatment temperature is controlled at 900 ℃, handles the back material with 15% limewash drip washing, flue gas alumina adsorption.Solvable fluorine content is 23.71mg/l in the final solid slag, and cyanide content is 0.029mg/l, and harmful substance contents is lower than national environmental protection permission discharge standard in solid slag and the flue gas.
Embodiment 3
Allocate waste lining 675 grams in the heat treatment of raw materials into, add with particle form less than 2mm; Allocate lime stone 742.5 gram (waste lining 1.1 times) into, add with particle form less than 2mm; The sand amount of allocating into is 135 grams (waste lining 0.2 times), adds with the particle form less than 1mm, and three kinds of mixing of materials are even, adds in the rotary kiln with blanking device.Bituminous coal sprays into rotary kiln with the coal dust form; Heat treatment temperature is controlled at 850 ℃, and material is with 20% limewash drip washing, flue gas alumina adsorption after the heat treatment.Solvable fluorine content is 29.22mg/l in the final solid slag, and cyanide content is 0.052mg/l, and harmful substance contents is lower than national environmental protection permission discharge standard in solid slag and the flue gas.
Embodiment 4
Allocate waste lining 1163 grams in the heat treatment of raw materials into, add with particle form less than 2mm; Allocate lime stone 814 gram (waste lining 0.7 times) into, add with particle form less than 2mm; The sand amount of allocating into is 407 grams (waste lining 0.35 times), adds with the particle form less than 1mm, and three kinds of mixing of materials are even, adds in the rotary kiln with blanking device.Bituminous coal sprays into rotary kiln with the coal dust form; Heat treatment temperature is controlled at 750 ℃, and material is with 25% limewash drip washing, flue gas alumina adsorption after the heat treatment.Solvable fluorine content is 32.59mg/l in the final solid slag, and cyanide content is 0.063mg/l, and harmful substance contents is lower than national environmental protection permission discharge standard in solid slag and the flue gas.
Embodiment 5
Allocate waste lining 1500 grams in the heat treatment of raw materials into, add with particle form less than 2mm; Allocate lime stone 1500 gram (waste lining 1.0 times) into, add with particle form less than 2mm; The serpentine amount of allocating into is 450 grams (waste lining 0.3 times), adds with the particle form less than 1mm, and three kinds of mixing of materials are even, adds in the rotary kiln with blanking device.Bituminous coal sprays into rotary kiln with the coal dust form; Heat treatment temperature is controlled at 950 ℃, and material is with 17% limewash drip washing, flue gas alumina adsorption after the heat treatment.Solvable fluorine content is 35.07mg/l in the final solid slag, and cyanide content is 0.071mg/l, and harmful substance contents is lower than national environmental protection permission discharge standard in solid slag and the flue gas.
Claims (8)
1. the method for innocent treatment of an aluminium electrolytic tank, it is characterized in that its processing procedure is followed successively by: (1) will comprise that the useless cell lining of waste cathode carbon block, waste refractory materials is broken into the particle of particle diameter less than 2mm; (2) in waste lining, allocate lime stone and silica containing material into, the lime stone amount of allocating into is 0.6-1.5 a times of waste lining weight, the 0.1-0.6 that the silica containing material amount of allocating into is a waste lining weight doubly mixes the back and carry out roasting in rotary kiln, and sintering temperature is 650 ℃-1000 ℃; (3) handling back material concentration is that the drip washing of 5%-40% limewash is carried out secondary response, the flue gas alumina adsorption.
2. the method for innocent treatment of a kind of aluminium electrolytic tank according to claim 1 is characterized in that lime stone mineral CaO content＞60% that the roasting reaction is allocated into, and a degree is less than 2mm.
3. the method for innocent treatment of a kind of aluminium electrolytic tank according to claim 1 is characterized in that SiO in the silica containing material that the roasting reaction allocates into
2Content＞40%, granularity is less than 1mm.
4. the method for innocent treatment of a kind of aluminium electrolytic tank according to claim 1 is characterized in that it is flyash that silica containing material is allocated in the roasting reaction into.
5. the method for innocent treatment of a kind of aluminium electrolytic tank according to claim 1 is characterized in that the roasting reaction allocates a kind of or mixture that silica containing material is sand, serpentine, montmorillonite into.
6. the method for innocent treatment of a kind of aluminium electrolytic tank according to claim 1 is characterized in that roasting is is extra fuel with bituminous coal.
7. the method for innocent treatment of a kind of aluminium electrolytic tank according to claim 1, what it is characterized in that roasting uses is rotary kiln, also available revolution bed or fluidized-bed.
8. the method for innocent treatment of a kind of aluminium electrolytic tank according to claim 1 is characterized in that the flue gas carrying alumina fluorine that roasting produces, and returns aluminium cell behind year fluorine and uses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410042564 CN1256197C (en) | 2004-05-24 | 2004-05-24 | Harmless treating method for waste tank lining of aluminium electrolytic bath |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410042564 CN1256197C (en) | 2004-05-24 | 2004-05-24 | Harmless treating method for waste tank lining of aluminium electrolytic bath |
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| CN1583301A CN1583301A (en) | 2005-02-23 |
| CN1256197C true CN1256197C (en) | 2006-05-17 |
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Families Citing this family (23)
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| CN100506406C (en) * | 2006-06-22 | 2009-07-01 | 中国铝业股份有限公司 | Treatment of aluminum electrolytic-cell waste lining |
| CN100522398C (en) * | 2006-06-22 | 2009-08-05 | 中国铝业股份有限公司 | Treatment of aluminum electrolytic cell waste refractory materials |
| CN101054693B (en) * | 2007-05-31 | 2010-05-26 | 中国铝业股份有限公司 | Method of extracting electrolyte from waste cathode carbon block of aluminum electrolysis bath |
| CN101147913B (en) * | 2007-07-27 | 2010-08-04 | 中国铝业股份有限公司 | Method for processing aluminium electrolytic tank with magnesium reduction slag as additive |
| CN101988209A (en) * | 2010-12-03 | 2011-03-23 | 东北大学 | Method for treating discarded silicon carbide side wall material of aluminum electrolytic cell |
| CN103028592B (en) * | 2012-12-04 | 2016-08-10 | 周俊和 | A kind of circulation utilization method of electrolytic cell overhaul slag recovery water |
| CN102989743A (en) * | 2012-12-04 | 2013-03-27 | 贵州铝城铝业原材料研究发展有限公司 | Method for recycling slag slurry of overhauling groove slag of electrolytic cell |
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| CN105130460A (en) * | 2015-07-11 | 2015-12-09 | 云南云铝润鑫铝业有限公司 | Method of regenerating anti-seepage material from waste aluminium electrolytic tank lining |
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| CN105214275A (en) * | 2015-10-15 | 2016-01-06 | 郑州经纬科技实业有限公司 | The processing method of cyanide and fluoride in electrolytic aluminium waste slot liner |
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| CN105499251A (en) * | 2015-12-11 | 2016-04-20 | 北京京碧蓝环保科技有限公司 | Glass solidification stabilization method for treating aluminum electrolysis waste slot lining based on F-Si chemical bond |
| CN105964660B (en) * | 2016-05-27 | 2018-11-06 | 中南大学 | A kind of method of harmless treatment aluminium electrolytic tank |
| CN107013922A (en) * | 2017-05-26 | 2017-08-04 | 北京石油化工学院 | The harmlessness disposing technique method and apparatus of electrolytic aluminium solid waste |
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| CN108557814B (en) * | 2018-05-11 | 2020-01-17 | 中南大学 | Method for purifying and separating carbon and fluoride in waste carbon material of aluminum electrolysis cell and prolonging service life of equipment |
| CN108585564B (en) * | 2018-07-16 | 2023-05-16 | 长沙中硅环保科技有限公司 | System and method for co-processing electrolytic aluminum waste residues and co-producing double quick cement by cement kiln |
| CN109108049B (en) * | 2018-08-01 | 2021-06-18 | 湘潭大学 | Method and system for converting sodium-containing and fluorine-containing compounds in aluminum electrolysis hazardous waste residues |
| CN109865736B (en) * | 2019-03-22 | 2021-02-09 | 中南大学 | Method for preparing adsorption material from waste cathode leaching residues of aluminum electrolysis cell |
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-
2004
- 2004-05-24 CN CN 200410042564 patent/CN1256197C/en active Active
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| Publication number | Publication date |
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| CN1583301A (en) | 2005-02-23 |
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