CN1485465A - Method for producing semi-graphite prebaked anode - Google Patents
Method for producing semi-graphite prebaked anode Download PDFInfo
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- CN1485465A CN1485465A CNA031562477A CN03156247A CN1485465A CN 1485465 A CN1485465 A CN 1485465A CN A031562477 A CNA031562477 A CN A031562477A CN 03156247 A CN03156247 A CN 03156247A CN 1485465 A CN1485465 A CN 1485465A
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Abstract
A method of producing prebaking semi-graphite anodes comprises: cracking-screening-blending-pugging-molding-baking. It is characterized in, after the middle forging, the prebaking anode thickener contains( by weight), 20%-50% petrolatum coke, 0%-50% semi-graphite petrolatum coke or graphite petrolatum coke, 0%-40% man-made graphite, 14%-20% coal pitch, 0%-20% stub, ash below 1%; pugging is at 140 degree C-180 degree C, molding is at 130 degree C-150 degree C, baking is at 1050 degree C-1250 degree C. The prebaking semi-graphite anode has a low resistance and a low oxidization activity, excellent performance of resisting heat and shock.
Description
Technical field
The present invention relates to a kind of production method of schungite prebaked anode, particularly broken with after-smithing petroleum coke, semi-graphited refinery coke, full greying refinery coke, synthetic graphite, coal-tar pitch, anode scrap are raw material, the method for direct production schungite prebaked anode.
Background technology
Current, producing the used raw material of pre-baked anode carbon blocks is after-smithing petroleum coke, anode scrap, coal-tar pitch, and this kind pre-baked anode carbon blocks resistivity is higher, oxidation activity is big, and thermal shock resistance is poor, oxidation consumption height during electrolysis is used, primary aluminum unit's anode consumption height has increased the production cost of primary aluminum greatly.Along with the development of electrolyzer to large vol, automation direction, improving anodic current density is the effective ways that increase substantially aluminium output, reduce the primary aluminum production cost; Be badly in need of a kind of high performance prebaked anode of exploitation at present.
Summary of the invention
The objective of the invention is deficiency, propose that a kind of anode consumption is low, the production method of the schungite prebaked anode that can bear high current density at above-mentioned prior art.
The objective of the invention is to be achieved through the following technical solutions.
A kind of production method of schungite prebaked anode comprises fragmentation → screening → batching → mixed pinching → moulding → roasting; It is characterized in that:
A. control that after-smithing petroleum coke is (weight percent) 20%-50% in the prebaked anode thickener, semi-graphited refinery coke or full greying refinery coke are 0%-50%, and synthetic graphite is broken to be 0%-40%, and coal-tar pitch is 14%-20%, anode scrap is 0%-20%, and the ash content of coal is less than 1%;
B. kneading temperature is 140 ℃-180 ℃;
C. mold temperature is 130 ℃-150 ℃;
D. maturing temperature is 1050 ℃-1250 ℃;
The production method of a kind of schungite prebaked anode of the present invention is characterized in that contained synthetic graphite is broken with particle or the adding of powder form, and its ash content of coal is less than 0.5%.
The production method of a kind of schungite prebaked anode of the present invention is characterized in that contained semi-graphited refinery coke or full greying refinery coke add with particle or powder form.
The production method of a kind of schungite prebaked anode of the present invention is characterized in that contained anode scrap adds with particle form.
The production method of a kind of schungite prebaked anode of the present invention is characterized in that contained coal-tar pitch is medium temperature coal pitch or high temperature coal-tar pitch or modified coal asphalt.
The schungite prebaked anode that the inventive method is produced, the resistivity lower than having, lower oxidation activity with prior art, good thermal shock resistance can bear higher anodic current density, and anode consumption is low, can realize increasing production 15%, thereby can reduce the primary aluminum production cost.The quality index of the schungite prebaked anode of producing with the inventive method is: resistivity 40-45 μ Ω m, CO
2Response factor 25-35mg/cm
2H, other indexs are not less than the YS/T285-1998 standard.
Embodiment
A kind of production method of schungite prebaked anode comprises fragmentation → screening → batching → mixed pinching → moulding → roasting; It is characterized in that: after-smithing petroleum coke is (weight percent) 20%-50% in a. control prebaked anode thickener, semi-graphited refinery coke or full greying refinery coke are 0%-50%, and synthetic graphite is broken to be 0%-40%, and coal-tar pitch is 14%-20%, anode scrap is 0%-20%, and the ash content of coal is less than 1%; B. kneading temperature is 140 ℃-180 ℃; C. mold temperature is 130 ℃-150 ℃; D. maturing temperature is 1050 ℃-1250 ℃.The contained synthetic graphite of schungite prebaked anode is broken to add with particle or powder form, and its ash content of coal is less than 0.5%.Contained semi-graphited refinery coke or full greying refinery coke add with particle or powder form.Contained anode scrap adds with particle form.Contained coal-tar pitch is medium temperature coal pitch or high temperature coal-tar pitch or modified coal asphalt.
Embodiment 1
Semi-graphited refinery coke content (weight percent) is 30% in the control prebaked anode thickener, adds with particle form; Anode scrap content 15% adds with particle form; After-smithing petroleum coke content 39.5% adds with the powder form; Adopt medium temperature coal pitch, the amount of allocating into 15.5%; 155 ℃ of kneading temperatures, 140 ℃ of mold temperatures, 1100 ℃ of maturing temperatures.The ash 0.31% of the schungite prebaked anode of producing, resistivity 42.6 μ Ω m, CO
2Response factor 32.4mg/cm
2H.
Embodiment 2
The broken content of synthetic graphite (weight percent) is 30% in the control prebaked anode thickener, adds with the powder form; Anode scrap content 10% adds with particle form; After-smithing petroleum coke content 43.5% adds with particle, powder form; Adopt modified coal asphalt, the amount of allocating into 16.5%; 180 ℃ of kneading temperatures, 150 ℃ of mold temperatures, 1150 ℃ of maturing temperatures.The ash 0.48% of the schungite prebaked anode of producing, resistivity 43.7 μ Ω m, CO
2Response factor 33.6mg/cm
2H.
Embodiment 3
Semi-graphited refinery coke content (weight percent) is 20% in the control prebaked anode thickener, adds with the powder form; The broken content 20% of synthetic graphite adds with particle form; After-smithing petroleum coke content 44% adds with particle, powder form; Adopt the high temperature coal-tar pitch, the amount of allocating into 16%, 160 ℃ of kneading temperatures, 150 ℃ of mold temperatures, 1150 ℃ of maturing temperatures.The ash 0.37% of the schungite prebaked anode of producing, resistivity 40.6 μ Ω m, CO
2Response factor 30.1mg/cm
2H.
Embodiment 4
Semi-graphited refinery coke content (weight percent) is 40% in the control prebaked anode thickener, adds with the powder form; Anode scrap 20% adds with particle form; After-smithing petroleum coke content 23% adds with particle form; Adopt modified coal asphalt, the amount of allocating into 17%; 175 ℃ of kneading temperatures, 150 ℃ of mold temperatures, 1200 ℃ of maturing temperatures.The ash 0.34% of the schungite prebaked anode of producing, resistivity 40.3 μ Ω m, CO
2Answer factor 28.1mg/cm
2H.
Embodiment 5
The broken content of synthetic graphite (weight percent) is 40% in the control prebaked anode thickener, adds with particle, powder form; Anode scrap 7% adds with particle form; After-smithing petroleum coke 35.5% adds with particle, powder form; Adopt medium temperature coal pitch, the amount of allocating into 17.5%; 160 ℃ of kneading temperatures, 140 ℃ of mold temperatures, 1100 ℃ of maturing temperatures.The ash 0.51% of the schungite prebaked anode of producing, resistivity 41.5 μ Ω m, CO
2Response factor 31.3mg/cm
2H.
Embodiment 6
Semi-graphited refinery coke content (weight percent) is 15% in the control prebaked anode thickener, adds with particle form; The broken content of synthetic graphite is 15%, adds with particle form; After-smithing petroleum coke 50% adds with particle, powder form; Anode scrap 4% adds with particle form; Adopt the high temperature coal-tar pitch, the amount of allocating into 16%; 165 ℃ of kneading temperatures, 145 ℃ of mold temperatures, 1200 ℃ of maturing temperatures.The ash 0.37% of the schungite prebaked anode of producing, resistivity 40.6 μ Ω m, CO
2Response factor 30.1mg/cm
2H.
Embodiment 7
Full greying refinery coke content (weight percent) is 30% in the control prebaked anode thickener, adds with particle form; After-smithing petroleum coke 50% adds with particle, powder form; Adopt the high temperature coal-tar pitch, the amount of allocating into 16%; 165 ℃ of kneading temperatures, 145 ℃ of mold temperatures, 1200 ℃ of maturing temperatures.The ash 0.32% of the schungite prebaked anode of producing, resistivity 38.6 μ Ω m, CO
2Response factor 30.4mg/cm
2H.
Embodiment 8
Full greying refinery coke content (weight percent) is 40% in the control prebaked anode thickener, adds with the powder form; After-smithing petroleum coke 33% adds with particle form; Anode scrap 10% adds with particle form; Adopt the high temperature coal-tar pitch, the amount of allocating into 17%; 165 ℃ of kneading temperatures, 145 ℃ of mold temperatures, 1200 ℃ of maturing temperatures.The ash 0.35% of the schungite prebaked anode of producing, resistivity 36.8 μ Ω m, CO
2Response factor 30.7mg/cm
2H.
Embodiment 9
Full greying refinery coke content (weight percent) is 15% in the control prebaked anode thickener, adds with particle form; The broken content of synthetic graphite is 20%, adds with the powder form; After-smithing petroleum coke 40% adds with particle, powder form; Semi-graphited refinery coke 9% adds with particle form; Adopt the high temperature coal-tar pitch, the amount of allocating into 16%; 165 ℃ of kneading temperatures, 145 ℃ of mold temperatures, 1150 ℃ of maturing temperatures.The ash 0.31% of the schungite prebaked anode of producing, resistivity 38.6 μ Ω m, CO
2Response factor 30.2mg/cm
2H.
Claims (5)
1. the production method of a schungite prebaked anode comprises fragmentation → screening → batching → mixed pinching → moulding → roasting; It is characterized in that:
A. control that after-smithing petroleum coke is (weight percent) 20%-50% in the prebaked anode thickener, semi-graphited refinery coke or full greying refinery coke are 0%-50%, and synthetic graphite is broken to be 0%-40%, and coal-tar pitch is 14%-20%, anode scrap is 0%-20%, and the ash content of coal is less than 1%;
B. kneading temperature is 140 ℃-180 ℃;
C. mold temperature is 130 ℃-150 ℃;
D. maturing temperature is 1050 ℃-1250 ℃.
2. the production method of a kind of schungite prebaked anode according to claim 1 is characterized in that contained synthetic graphite is broken with particle or the adding of powder form, and its ash content of coal is less than 0.5%.
3. the production method of a kind of schungite prebaked anode according to claim 1 is characterized in that contained semi-graphited refinery coke or full greying refinery coke add with particle or powder form.
4. the production method of a kind of schungite prebaked anode according to claim 1 is characterized in that contained anode scrap adds with particle form.
5. the production method of a kind of schungite prebaked anode according to claim 1 is characterized in that contained coal-tar pitch is medium temperature coal pitch or high temperature coal-tar pitch or modified coal asphalt.
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| CN 03156247 CN1260396C (en) | 2003-09-02 | 2003-09-02 | Method for producing semi-graphite prebaked anode |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924106B (en) * | 2006-08-29 | 2010-05-26 | 中国铝业股份有限公司 | Prebaked-anode baking heating-up technology |
| CN101922022A (en) * | 2010-08-03 | 2010-12-22 | 湖南晟通科技集团有限公司 | Method for reducing resistivity of prebaked anode |
| CN101603184B (en) * | 2009-07-24 | 2011-07-20 | 山西华泽铝电有限公司 | Medium-grained carbon anode matched with 300KA aluminum electrolyzer |
| WO2011096405A1 (en) * | 2010-02-02 | 2011-08-11 | 株式会社神戸製鋼所 | Method for producing carbon positive pole |
| CN102432001A (en) * | 2011-09-23 | 2012-05-02 | 昆明冶金研究院 | Kneading and flaking process for preparing high-purity graphite from high-purity petroleum coke and high-purity coal pitch |
| CN101487128B (en) * | 2008-01-14 | 2012-05-30 | 贵阳铝镁设计研究院有限公司 | Process for manufacturing raw anode |
| CN103754996A (en) * | 2014-01-13 | 2014-04-30 | 西安建筑科技大学 | Method for deeply treating cyanided gold extraction waste water by electro-adsorption technology |
| CN103952721A (en) * | 2014-04-21 | 2014-07-30 | 西安建筑科技大学 | Semi-coke base carbon anode for aluminum electrolysis and preparation method thereof |
| CN105177628A (en) * | 2015-10-29 | 2015-12-23 | 中南大学 | Modified carbon anode and preparation method thereof |
| CN105369290A (en) * | 2015-11-23 | 2016-03-02 | 中国铝业股份有限公司 | Method for producing prebaked anode capable of lowering air permeability |
| CN106222700A (en) * | 2016-08-22 | 2016-12-14 | 中国铝业股份有限公司 | A kind of method utilizing anode scrap to prepare aluminum carbon anode |
| CN112876249A (en) * | 2021-01-13 | 2021-06-01 | 山西沁新能源集团股份有限公司 | Method for preparing prebaked anode, prebaked anode and application thereof |
| CN115142093A (en) * | 2022-07-14 | 2022-10-04 | 湖南大学 | Prebaked anode antioxidant, and preparation method and application thereof |
| CN116496085A (en) * | 2023-04-10 | 2023-07-28 | 广西强强碳素股份有限公司 | Preparation method of prebaked anode for electrolysis of semi-graphite aluminum |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101225530B (en) * | 2007-10-26 | 2011-03-23 | 湖南大学 | Use of low-ash carbonaceous raw material in manufacture of pre-baked anode |
-
2003
- 2003-09-02 CN CN 03156247 patent/CN1260396C/en not_active Expired - Lifetime
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1924106B (en) * | 2006-08-29 | 2010-05-26 | 中国铝业股份有限公司 | Prebaked-anode baking heating-up technology |
| CN101487128B (en) * | 2008-01-14 | 2012-05-30 | 贵阳铝镁设计研究院有限公司 | Process for manufacturing raw anode |
| CN101603184B (en) * | 2009-07-24 | 2011-07-20 | 山西华泽铝电有限公司 | Medium-grained carbon anode matched with 300KA aluminum electrolyzer |
| WO2011096405A1 (en) * | 2010-02-02 | 2011-08-11 | 株式会社神戸製鋼所 | Method for producing carbon positive pole |
| CN101922022A (en) * | 2010-08-03 | 2010-12-22 | 湖南晟通科技集团有限公司 | Method for reducing resistivity of prebaked anode |
| CN102432001A (en) * | 2011-09-23 | 2012-05-02 | 昆明冶金研究院 | Kneading and flaking process for preparing high-purity graphite from high-purity petroleum coke and high-purity coal pitch |
| CN102432001B (en) * | 2011-09-23 | 2013-06-19 | 昆明冶金研究院 | Kneading and flaking technique for producing high-purity graphite from high-purity petroleum coke and high-purity coal tar pitch |
| CN103754996B (en) * | 2014-01-13 | 2015-05-20 | 西安建筑科技大学 | Method for deeply treating cyanided gold extraction waste water by electro-adsorption technology |
| CN103754996A (en) * | 2014-01-13 | 2014-04-30 | 西安建筑科技大学 | Method for deeply treating cyanided gold extraction waste water by electro-adsorption technology |
| CN103952721A (en) * | 2014-04-21 | 2014-07-30 | 西安建筑科技大学 | Semi-coke base carbon anode for aluminum electrolysis and preparation method thereof |
| CN103952721B (en) * | 2014-04-21 | 2016-04-13 | 西安建筑科技大学 | A kind of blue charcoal base carbon anode used for aluminium electrolysis and preparation method thereof |
| CN105177628A (en) * | 2015-10-29 | 2015-12-23 | 中南大学 | Modified carbon anode and preparation method thereof |
| CN105369290A (en) * | 2015-11-23 | 2016-03-02 | 中国铝业股份有限公司 | Method for producing prebaked anode capable of lowering air permeability |
| CN106222700A (en) * | 2016-08-22 | 2016-12-14 | 中国铝业股份有限公司 | A kind of method utilizing anode scrap to prepare aluminum carbon anode |
| CN112876249A (en) * | 2021-01-13 | 2021-06-01 | 山西沁新能源集团股份有限公司 | Method for preparing prebaked anode, prebaked anode and application thereof |
| CN112876249B (en) * | 2021-01-13 | 2022-07-08 | 山西沁新能源集团股份有限公司 | Method for preparing prebaked anode, prebaked anode and application thereof |
| CN115142093A (en) * | 2022-07-14 | 2022-10-04 | 湖南大学 | Prebaked anode antioxidant, and preparation method and application thereof |
| CN115142093B (en) * | 2022-07-14 | 2024-01-30 | 湖南大学 | Prebaked anode antioxidant, preparation method and application thereof |
| CN116496085A (en) * | 2023-04-10 | 2023-07-28 | 广西强强碳素股份有限公司 | Preparation method of prebaked anode for electrolysis of semi-graphite aluminum |
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| CN1260396C (en) | 2006-06-21 |
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