CN105642649A - High-temperature treatment method for waste cathode of electrolytic aluminum - Google Patents
High-temperature treatment method for waste cathode of electrolytic aluminum Download PDFInfo
- Publication number
- CN105642649A CN105642649A CN201511024691.XA CN201511024691A CN105642649A CN 105642649 A CN105642649 A CN 105642649A CN 201511024691 A CN201511024691 A CN 201511024691A CN 105642649 A CN105642649 A CN 105642649A
- Authority
- CN
- China
- Prior art keywords
- waste cathode
- cathode
- electrolytic aluminum
- carbon
- treatment method
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 45
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 239000002699 waste material Substances 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 29
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000000779 smoke Substances 0.000 claims abstract description 17
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003575 carbonaceous material Substances 0.000 claims abstract description 10
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 8
- 238000001914 filtration Methods 0.000 claims abstract description 8
- 239000004411 aluminium Substances 0.000 claims description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 239000003546 flue gas Substances 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 238000012856 packing Methods 0.000 claims description 3
- 150000004767 nitrides Chemical class 0.000 claims description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 abstract description 8
- 238000010521 absorption reaction Methods 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
- 239000003595 mist Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 11
- 239000003610 charcoal Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000002920 hazardous waste Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 239000010406 cathode material Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000011294 coal tar pitch Substances 0.000 description 1
- 239000000571 coke Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001338 liquidmetal Inorganic materials 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- -1 sodium aluminum fluoride Chemical compound 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B5/00—Operations not covered by a single other subclass or by a single other group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Electrolytic Production Of Metals (AREA)
Abstract
The invention provides a high-temperature treatment method of an electrolytic aluminum waste cathode, which comprises the following steps: crushing the waste cathode carbon blocks of the electrolytic aluminum to 3-15mm, roasting the waste cathode carbon blocks by adopting an ultra-high temperature furnace, volatilizing fluoride in the waste cathode carbon blocks and decomposing cyanide in the waste cathode carbon blocks, absorbing smoke generated by roasting in a water mist absorption mode, filtering, drying and other processes, reusing the fluoride in the aluminum electrolysis, and discharging the cathode carbon materials out of the ultra-high temperature furnace after cooling. According to the physical and chemical properties of fluoride, cyanide and carbon in the electrolytic aluminum waste cathode, the fluoride in the electrolytic aluminum waste cathode is volatilized by adopting a high-temperature method, the cyanide in the electrolytic aluminum waste cathode is decomposed, and the carbon in the cathode can not be combusted under the basic vacuum condition, so that the effective separation of the carbon, the fluoride and the cyanide in the cathode is realized, and the harmless disposal and the resource utilization of the electrolytic aluminum waste cathode are realized.
Description
Technical field
The invention belongs to field for the treatment of of solid waste, it is specifically related to a kind of method of pyroprocessing electrolytic aluminium waste cathode.
Background technology
Electrolytic aluminum negative electrode is to calcine hard coal, metallurgical coke, graphite etc. as aggregate, and the cakingagents such as coal-tar pitch are made, and is mainly used in making the block class of aluminium cell carbon lining or sticks with paste class carbon product. In aluminium electrolysis process, the principal reaction that negative electrode occurs is fused to sodium aluminum fluoride (Na2AIFeNa2AIF6) in AI3+Being reduced into liquid metal aluminium, converge and amass in carbonaceous bottom land surface, aluminium liquid and carbonaceous bottom land are jointly as the conductive cathode of electrolyzer. Owing to electrolyte melt having various fluorochemical, impurity, there is effects such as corroding and wash away in the fused salt cathode blocks that electrolysis produces under the effect of electric field, add the effect of thermal stresses, cathode material deformed, swells, rupture, be useless negative electrode even damaged.
Electrolytic aluminium waste cathode is containing about 20-40% fluorochemical, the Hazardous wastes of micro cyanide, owing to its fluorochemical and prussiate are easily hydrolyzed, therefore if effectively do not disposed, run into drench with rain, water logging easily cause serious environmental pollution. Within 2014, China's electrolytic aluminum output reaches more than 2,200 ten thousand tons, and world's electrolytic aluminum output reaches more than 5,000 ten thousand tons. Along with the increase of electrolytic aluminum output, the useless negative electrode that electrolytic aluminum produces increases day by day. At present, the useless negative electrode that China's aluminum electrolysis industry produces every year reaches 200,000 tons, has the accumulation of more than 400 ten thousand tons to store up. Owing to lacking at present both at home and abroad advanced electrolytic aluminium waste cathode harmlessness disposing and application technology as the second resource, treatment process that what aluminium electrolysis enterprise generally adopted bury causes environment and greatly pollutes and resource significant wastage.
Dispose electrolytic aluminium waste cathode within the scope of current China and even the world and mainly adopt wet method and burning method, landfill method, the toner value that wherein wet method obtains is not high, burning method can not efficient recovery fluorochemical wherein, therefore the landfill method of high cost is mainly adopted, but due to major part, enterprise can not carry out innoxious landfill according to the disposal options of Hazardous wastes, and therefore the problem of environmental pollution of electrolytic aluminium waste cathode is never effectively solved.
Summary of the invention
For this area Problems existing, it is an object of the present invention to provide a kind of Technology being suitable for electrolytic aluminium waste cathode harmlessness disposing and recycling.The specifically a kind of high-temperature treatment method of electrolytic aluminium waste cathode.
The concrete technical scheme realizing above-mentioned purpose of the present invention is:
A kind of high-temperature treatment method of electrolytic aluminium waste cathode, comprise step: electrolytic aluminium waste cathode carbon block is crushed to 3-15mm, then ultrahigh-temperature stove roasting is adopted, volatilizing fluorochemical wherein, decomposing prussiate wherein is nitride, roasting produces flue gas and adopts the mode of water smoke absorption to absorb, then through operations such as filtration, oven dry, fluorochemical etc. are back to use in electrolysis of aluminum, and negative electrode carbon materials draws off ultrahigh-temperature stove after overcooling
Negative electrode carbon materials draws off ultrahigh-temperature stove after overcooling becomes the carbon materials that fixed carbon content reaches 97%, can be broken etc. as carburelant, graphite, thus the carbon materials in electrolytic aluminium waste cathode, fluorochemical are got utilization, fluorochemical wherein obtains harmlessness disposing.
Preferably, electrolytic aluminium waste cathode carbon block is crushed to 10-15mm.
Wherein, adopting top material natural packing and the closelypacked mode of bottom discharge fully isolated air during roasting in ultrahigh-temperature stove, maturing temperature is 2600��2800 DEG C.
Wherein, the mode that the flue gas that roasting produces adopts water smoke to absorb absorbs, and the throughput ratio of flue gas and water smoke is 1:2-1:5.
The useful effect of the present invention is:
The present invention is according to fluorochemical in electrolytic aluminium waste cathode, the physicochemical property of prussiate and charcoal element, pyroprocess is adopted to volatilize fluorochemical wherein, decompose prussiate wherein, and the charcoal element in negative electrode can not burn when basic vacuum, thus realize carbon element and fluorochemical in negative electrode, effective separation of prussiate, and make the further greying of carbon element, the method adopting water smoke to absorb again reclaims the fluorochemical etc. of vaporization at high temperature, improve the fixed carbon content of carbon materials, efficient recovery fluorochemical, achieve harmlessness disposing and the recycling of electrolytic aluminium waste cathode.
Accompanying drawing explanation
The high-temperature treatment process diagram of a kind of electrolytic aluminium waste cathode of Fig. 1 to be Fig. 1 be the present invention,
In figure, 1 is electrolytic aluminium waste cathode carbon block, and 2 is High Temperature Furnaces Heating Apparatus, and 3 is carbon materials, and 4 is water smoke absorption equipment, and 5 is filter plant, and 6 is drying plant, and 7 is fluorochemical ionogen.
Embodiment
Following examples are for illustration of the present invention, but are not used for limiting the scope of the invention. The following stated is only the preferred embodiment of the present invention; it is noted that for those skilled in the art, under the prerequisite not departing from the technology of the present invention principle; can also making some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
In embodiment, if no special instructions, the technique means used is ordinary skill in the art means.
Embodiment 1
See Fig. 1, in figure, 1 is the electrolytic aluminium waste cathode carbon block of 3-15mm, join in the High Temperature Furnaces Heating Apparatus 2 that temperature can reach 2600-2800 DEG C, High Temperature Furnaces Heating Apparatus is drawn off through the high-temperature roasting of more than 1 hour and cooling, form the carbon materials 3 of high purity, in High Temperature Furnaces Heating Apparatus, the fluorochemical of volatilization is through water smoke absorption equipment 4, more finally forms fluorochemical ionogen 7 through filter plant 5, drying plant 6. In the present embodiment, electrolytic aluminium waste cathode carbon block is crushed to 3-15mm, then adopts ultrahigh-temperature equipment roasting, volatilizes fluorochemical etc. wherein, and prussiate decomposes, and the mode that fluorochemical etc. adopt water smoke to absorb absorbs,
Electrolytic aluminium waste cathode carbon block is crushed to 3-15mm, then join in the High Temperature Furnaces Heating Apparatus that temperature can reach 2600 DEG C, adopting top material natural packing and the closelypacked mode roasting of bottom material 2 hours, flue gas adopts water smoke to absorb 1:5, and charcoal element draws off High Temperature Furnaces Heating Apparatus after overcooling.
Through operations such as filtration, oven dry after water smoke absorption, obtaining fluorochemical etc. is back to use in electrolysis of aluminum, and its content of fluoride is about 90%, and product rate is about 30%. The negative electrode carbon materials drawing off High Temperature Furnaces Heating Apparatus is after overcooling, and product rate is about 70%, and its fixed carbon content reaches 95%, and granularity is 3-15mm, it is possible to broken etc. as carburelant, graphite.
Embodiment 2
Electrolytic aluminium waste cathode carbon block is crushed to 10-15mm, then join in the High Temperature Furnaces Heating Apparatus that temperature can reach 2700 DEG C, roasting 1.5 hours, flue gas adopts water smoke to absorb, then filtering, dry, charcoal element draws off High Temperature Furnaces Heating Apparatus after overcooling, and wherein fixed carbon content reaches 97%, product rate is 80%, and granularity is 10-15mm. Other operations are with embodiment 1.
Through operations such as filtration, oven dry after water smoke absorption, obtaining fluorochemical, its content of fluoride is about 90%, and product rate is about 30%.
Embodiment 3
Electrolytic aluminium waste cathode carbon block is crushed to 10-15mm, then join in the High Temperature Furnaces Heating Apparatus that temperature can reach 2800 DEG C, roasting 1 hour, flue gas adopts water smoke to absorb, then filtering, dry, charcoal element draws off High Temperature Furnaces Heating Apparatus after overcooling, and wherein fixed carbon content reaches 97%, product rate is 75%, and granularity is 10-15mm. Other operations are with embodiment 1.
Through operations such as filtration, oven dry after water smoke absorption, obtaining fluorochemical, its content of fluoride is about 90%, and product rate is about 30%.
Embodiment that is disclosed above or that require can make or implement in the scope being no more than existing disclosed laboratory facilities. All products described by the preferred embodiment of the present invention and/or method, what refer to those concepts not violating the present invention, scope and spirit may be used for this product and/or experimental technique and following step clearly. To all changes and the improvement of technique means in described technique, all belong to concept, the scope and spirit of the claims in the present invention definition.
Claims (4)
1. the high-temperature treatment method of an electrolytic aluminium waste cathode, it is characterized in that, comprise step: electrolytic aluminium waste cathode carbon block is crushed to 3-15mm, then ultrahigh-temperature stove roasting is adopted, volatilizing fluorochemical wherein, decomposing prussiate wherein is nitride, and roasting produces the mode that flue gas adopts water smoke to absorb and absorbs, then through filtering, baking operation, fluorochemicals etc. are back to use in electrolysis of aluminum, and negative electrode carbon materials draws off ultrahigh-temperature stove after overcooling.
2. high-temperature treatment method according to claim 1, it is characterised in that, electrolytic aluminium waste cathode carbon block is crushed to 10-15mm.
3. high-temperature treatment method according to claim 1, it is characterised in that, adopt top material natural packing and the closelypacked mode of bottom discharge fully isolated air during roasting in ultrahigh-temperature stove, maturing temperature is 2600��2800 DEG C.
4. according to the arbitrary described high-temperature treatment method of claims 1 to 3, it is characterised in that, the mode that the flue gas that roasting produces adopts water smoke to absorb absorbs, and the throughput ratio of flue gas and water smoke is 1:2-1:5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511024691.XA CN105642649A (en) | 2015-12-30 | 2015-12-30 | High-temperature treatment method for waste cathode of electrolytic aluminum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511024691.XA CN105642649A (en) | 2015-12-30 | 2015-12-30 | High-temperature treatment method for waste cathode of electrolytic aluminum |
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| Publication Number | Publication Date |
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| CN105642649A true CN105642649A (en) | 2016-06-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201511024691.XA Pending CN105642649A (en) | 2015-12-30 | 2015-12-30 | High-temperature treatment method for waste cathode of electrolytic aluminum |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106147910A (en) * | 2016-07-27 | 2016-11-23 | 郑州经纬科技实业有限公司 | The anthracitic system and method for high graphite is produced with electrolytic aluminium waste cathode carbon block |
| CN106185818A (en) * | 2016-08-05 | 2016-12-07 | 北京矿冶研究总院 | High-temperature continuous treatment system for disposing waste cathode of electrolytic aluminum |
| CN106517209A (en) * | 2016-11-07 | 2017-03-22 | 中国铝业股份有限公司 | Method for treating spent cathodes of spent potlinings of aluminum electrolysis cells |
| CN106629606A (en) * | 2016-11-07 | 2017-05-10 | 中国铝业股份有限公司 | Method for separating fluoride salt and carbon in aluminum electrolysis carbon residues |
| CN106868246A (en) * | 2017-03-21 | 2017-06-20 | 山东南山铝业股份有限公司 | A kind of environment-friendly type phosphorus pig iron additive, its preparation method and phosphorous pig iron carbon increasing sulfur method |
| CN107628614A (en) * | 2016-07-18 | 2018-01-26 | 湖南华祺环境科技有限公司 | A kind of calcining method of disposal of electrolytic aluminium waste cathode |
| CN107720723A (en) * | 2017-11-09 | 2018-02-23 | 北京科技大学 | A kind of method of overall treatment aluminium electrolytic tank |
| CN107904621A (en) * | 2017-11-09 | 2018-04-13 | 北京科技大学 | A kind of regeneration treating method of waste cathode of aluminum electrolytic cell carbon block |
| CN107904622A (en) * | 2017-11-09 | 2018-04-13 | 北京科技大学 | A kind of renovation process of aluminium electrolytic side lining carbofrax material |
| CN108424037A (en) * | 2018-03-09 | 2018-08-21 | 沈阳银海再生资源科技有限公司 | Charcoal and graphite product production raw material and preparation method are made using the aluminium electroloysis cathode that gives up |
| CN110117718A (en) * | 2019-05-15 | 2019-08-13 | 东北大学 | The method for producing ferro-silicon-aluminium as raw material electric arc furnace smelting using waste refractory materials |
| CN110180862A (en) * | 2019-05-20 | 2019-08-30 | 六盘水师范学院 | A kind of aluminium electroloysis give up cathode preparation embedding sodium graphite and its application |
| CN112108490A (en) * | 2020-08-31 | 2020-12-22 | 西安建筑科技大学 | Treatment device for dangerous solid waste with overproof soluble fluorine and cyanide ions and operation method thereof |
| CN112108489A (en) * | 2020-08-31 | 2020-12-22 | 西安建筑科技大学 | High-temperature vacuum treatment method and treatment device for aluminum electrolysis waste cathode, carbon slag or silicon carbide brick and operation method thereof |
| CN114377338A (en) * | 2021-12-28 | 2022-04-22 | 郑州鸿跃环保科技有限公司 | Treatment system and treatment method for detoxifying overhaul residues of aluminum electrolysis cell |
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Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107628614B (en) * | 2016-07-18 | 2019-11-15 | 湖南华祺环境科技有限公司 | A kind of calcining method of disposal of electrolytic aluminium waste cathode |
| CN107628614A (en) * | 2016-07-18 | 2018-01-26 | 湖南华祺环境科技有限公司 | A kind of calcining method of disposal of electrolytic aluminium waste cathode |
| CN106147910A (en) * | 2016-07-27 | 2016-11-23 | 郑州经纬科技实业有限公司 | The anthracitic system and method for high graphite is produced with electrolytic aluminium waste cathode carbon block |
| CN106185818A (en) * | 2016-08-05 | 2016-12-07 | 北京矿冶研究总院 | High-temperature continuous treatment system for disposing waste cathode of electrolytic aluminum |
| CN106517209A (en) * | 2016-11-07 | 2017-03-22 | 中国铝业股份有限公司 | Method for treating spent cathodes of spent potlinings of aluminum electrolysis cells |
| CN106629606A (en) * | 2016-11-07 | 2017-05-10 | 中国铝业股份有限公司 | Method for separating fluoride salt and carbon in aluminum electrolysis carbon residues |
| CN106868246B (en) * | 2017-03-21 | 2019-01-04 | 山东南山铝业股份有限公司 | A kind of phosphorous pig iron carbon increasing sulfur method |
| CN106868246A (en) * | 2017-03-21 | 2017-06-20 | 山东南山铝业股份有限公司 | A kind of environment-friendly type phosphorus pig iron additive, its preparation method and phosphorous pig iron carbon increasing sulfur method |
| CN107720723A (en) * | 2017-11-09 | 2018-02-23 | 北京科技大学 | A kind of method of overall treatment aluminium electrolytic tank |
| CN107904621A (en) * | 2017-11-09 | 2018-04-13 | 北京科技大学 | A kind of regeneration treating method of waste cathode of aluminum electrolytic cell carbon block |
| CN107904622A (en) * | 2017-11-09 | 2018-04-13 | 北京科技大学 | A kind of renovation process of aluminium electrolytic side lining carbofrax material |
| CN108424037A (en) * | 2018-03-09 | 2018-08-21 | 沈阳银海再生资源科技有限公司 | Charcoal and graphite product production raw material and preparation method are made using the aluminium electroloysis cathode that gives up |
| CN108424037B (en) * | 2018-03-09 | 2021-04-06 | 沈阳银海再生资源科技有限公司 | Raw material for producing carbon and graphite products by using aluminum electrolysis waste cathode and preparation method thereof |
| CN110117718A (en) * | 2019-05-15 | 2019-08-13 | 东北大学 | The method for producing ferro-silicon-aluminium as raw material electric arc furnace smelting using waste refractory materials |
| CN110117718B (en) * | 2019-05-15 | 2020-07-24 | 东北大学 | Method for smelting and preparing ferro-silicon-aluminum by using waste refractory material as raw material in electric arc furnace |
| CN110180862A (en) * | 2019-05-20 | 2019-08-30 | 六盘水师范学院 | A kind of aluminium electroloysis give up cathode preparation embedding sodium graphite and its application |
| CN110180862B (en) * | 2019-05-20 | 2021-09-14 | 六盘水师范学院 | Sodium-embedded graphite prepared from aluminum electrolysis waste cathode and application thereof |
| CN112108490A (en) * | 2020-08-31 | 2020-12-22 | 西安建筑科技大学 | Treatment device for dangerous solid waste with overproof soluble fluorine and cyanide ions and operation method thereof |
| CN112108489A (en) * | 2020-08-31 | 2020-12-22 | 西安建筑科技大学 | High-temperature vacuum treatment method and treatment device for aluminum electrolysis waste cathode, carbon slag or silicon carbide brick and operation method thereof |
| CN114377338A (en) * | 2021-12-28 | 2022-04-22 | 郑州鸿跃环保科技有限公司 | Treatment system and treatment method for detoxifying overhaul residues of aluminum electrolysis cell |
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Application publication date: 20160608 |