CN101260543A - Method for adjusting aluminum electrolysis production technique - Google Patents
Method for adjusting aluminum electrolysis production technique Download PDFInfo
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- CN101260543A CN101260543A CNA2007101805629A CN200710180562A CN101260543A CN 101260543 A CN101260543 A CN 101260543A CN A2007101805629 A CNA2007101805629 A CN A2007101805629A CN 200710180562 A CN200710180562 A CN 200710180562A CN 101260543 A CN101260543 A CN 101260543A
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Abstract
The invention discloses an adjustment method for an aluminum electrolysis manufacturing technology. The concrete technical measures are as follows: intermediate and low temperature production is maintained, namely the cell temperature is reduced from normal 960 DEG C to 955 DEG C in the first week and reduced to be 950 DEG C in the second week and then maintained for production; the high molecular ratio is maintained, namely the molecular ratio is improved from normal 2.2 to 2.25 in the first week, improved to be 2.3 in the second week and to be 2.35 in the third week and then stably maintained between 2.2 and 2.4; the null-effect coefficient is adopted, namely the effect coefficient of the electrolytic cell is reduced from over 0.3 times per cell day priorly to below 0.03 times per cell day; the alumina concentration is stably stabilized, namely the alumina feeding amount of the electrolytic cell is adjusted so as to maintain the alumina concentration between 1.8 and 2.5 percent. Therefore, the stability of electrolyte compositions in the electrolytic cell is reached; the anti-interference capacity of the electrolytic cell is improved; the current efficiency of the electrolytic cell is indirectly improved; the voltage is stabilized; the average voltage is reduced; and the energy consumption is reduced.
Description
Technical field:
The present invention relates to a kind of inflation method of Aluminium Electrolysis technology, belong to Aluminium Electrolysis energy saving technology technical field.
Background technology:
Current country advocates energy-saving and cost-reducing, and saves energy is the target that each enterprise is pursued.Aluminum electrolysis industry is a high energy-consuming enterprises, saves energy and reduce the cost more to seem important.How to cut down the consumption of energy also is the research object of each aluminum electrolysis industry, but Aluminium Electrolysis is a dynamic production process, there are a lot of labile factors, technical qualification constantly change aborning, a lot of conditions all can be to the stable interference effect that plays of producing, influence the steady running of electrolyzer, thereby influence the ordinary production of electrolyzer, also further hindered energy-conservation effect, therefore how to reduce interference to electrolyzer, make the electrolysis production operation that tends towards stability, and improve the current efficiency of electrolyzer indirectly, cutting down the consumption of energy is the target that the electrolysis production manager pursues.
Summary of the invention:
Technical problem to be solved by this invention is: overcome the deficiencies in the prior art, a kind of inflation method of Aluminium Electrolysis technology is provided, make electrolysis technology condition more be tending towards rationalizing, stdn, maximum reduces the influence to electrolyzer with limiting the quantity of, reach stably manufactured, improve the purpose that electricity is imitated and cut down the consumption of energy.
The technical scheme that the present invention is taked for the technical solution problem is:
A kind of inflation method of Aluminium Electrolysis technology comprises conventional aluminum electrolysis production technology, and the technical parameter that it adopted is as follows:
A, keep in temperature production: first week was reduced to 955 ℃ to the groove temperature from normal 960 ℃, and second week was reduced to 950 ℃ from 955 ℃, maintained the temperature at then in this scope and produced;
B, the higher molecular ratio of maintenance, reduce superheating temperature: first week brought up to 2.25 to molecular ratio from normal 2.2, second week was brought up to about 2.3 from 2.25, and the 3rd week brought up to 2.35 to molecular ratio from 2.3, make molecular ratio remain on 2.2～2.4 between stable the maintenance;
C, employing null effect coefficient: the electrolyzer effect coefficient reduces the interference to producing by being reduced to below 0.03 time/groove day more than original 0.3 time/groove day;
D, the stable alumina concentration of adjusting: the alumina blanking amount to electrolyzer is made timely adjustment, guarantees that alumina concentration remains between 1.8～2.5%, reaches the purpose of stable control.
Positive beneficial effect of the present invention is:
Aluminium Electrolysis technology inflation method of the present invention by keeping higher molecular ratio, makes low-temperature electrolytic temperature in its maintenance, cooperates low effect coefficient, keeps two levels of suitable height; By timely adjustment alumina concentration, reach the stability of electrolyte ingredient in the electrolyzer, increased the immunity from interference of electrolyzer, electrolyzer production is tended towards stability more, improved the current efficiency of electrolyzer indirectly, stablized voltage, reduce average voltage, reduced energy consumption.
Embodiment:
Embodiment: a kind of inflation method of Aluminium Electrolysis technology, comprise conventional aluminum electrolysis production technology, the technical parameter that it adopted is as follows:
The maintenance of A, electrolysis temperature: first week was reduced to 955 ℃ to the groove temperature from normal 960 ℃, and second week was reduced to 950 ℃ from 955 ℃, maintained the temperature at then in this scope and produced.
The maintenance of b, molecular ratio, first week was brought up to for 2.25, the second weeks to molecular ratio from normal 2.2 and brings up to about 2.3 from 2.25, and the 3rd week brought up to 2.35 to molecular ratio from 2.3, made molecular ratio remain on stable maintenance the between the 2.2-2.4.
C, strengthen management the generation of controlling influence: strengthen the walkaround inspection of electrolyzer and the stable maintenance of technical qualification, the generation of controlling influence makes effect coefficient by being reduced to below 0.03 time/groove day more than original 0.3 time/groove day.The interference of minimizing to producing.
D, the stable alumina concentration of adjusting: the alumina blanking amount to electrolyzer is made timely adjustment, guarantees that alumina concentration remains between 1.8～2.5%, reaches the purpose of stable control.Adjust the alumina blanking amount, by to cell resistance and Al
2O
3The relational expression of concentration, tracking groove changes in resistance are controlled Al
2O
3Concentration is at Al
2O
3In the reinforced control process of concentration, Al is set specially
2O
3" excessive " reinforced process and Al
2O
3" amount of the owing " process of feeding in raw material is to form Al
2O
3The process of concentration changes with time, it is at interval reinforced to design a kind of benchmark, and the conversion adjustment between carrying out owing according to the reinforced interval of benchmark reaches the purpose that the alumina blanking amount is controlled.
The technology that the present invention does not describe in detail partly is known technology.
Claims (1)
1. an Aluminium Electrolysis technology inflation method comprises conventional aluminum electrolysis production technology, it is characterized in that:
A, keep in temperature production: first week was reduced to 955 ℃ to the groove temperature from normal 960 ℃, and second week was reduced to 950 ℃ from 955 ℃, maintained the temperature at then in this scope and produced;
B, the higher molecular ratio of maintenance, reduce superheating temperature: first week brought up to 2.25 to molecular ratio from normal 2.2, second week was brought up to about 2.3 from 2.25, and the 3rd week brought up to 2.35 to molecular ratio from 2.3, make molecular ratio remain on 2.2～2.4 between stable the maintenance;
C, employing null effect coefficient: the electrolyzer effect coefficient reduces the interference to producing by being reduced to below 0.03 time/groove day more than original 0.3 time/groove day;
D, the stable alumina concentration of adjusting: the alumina blanking amount to electrolyzer is made timely adjustment, guarantees that alumina concentration remains between 1.8～2.5%, reaches the purpose of stable control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101805629A CN101260543A (en) | 2007-11-28 | 2007-11-28 | Method for adjusting aluminum electrolysis production technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101805629A CN101260543A (en) | 2007-11-28 | 2007-11-28 | Method for adjusting aluminum electrolysis production technique |
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| Publication Number | Publication Date |
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| CN101260543A true CN101260543A (en) | 2008-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101805629A Pending CN101260543A (en) | 2007-11-28 | 2007-11-28 | Method for adjusting aluminum electrolysis production technique |
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| CN (1) | CN101260543A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935851A (en) * | 2010-09-30 | 2011-01-05 | 中南大学 | Current strengthening and efficient energy saving method of prebaked aluminium electrolysis cell |
| CN103572327A (en) * | 2013-10-11 | 2014-02-12 | 酒泉钢铁(集团)有限责任公司 | Control method for lowering aluminum electrolysis anode effect |
| WO2023246499A1 (en) * | 2022-06-22 | 2023-12-28 | 中国铝业股份有限公司 | Method for reducing perfluorocarbon emissions from aluminum electrolysis |
-
2007
- 2007-11-28 CN CNA2007101805629A patent/CN101260543A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101935851A (en) * | 2010-09-30 | 2011-01-05 | 中南大学 | Current strengthening and efficient energy saving method of prebaked aluminium electrolysis cell |
| CN101935851B (en) * | 2010-09-30 | 2012-03-28 | 中南大学 | Current strengthening and efficient energy saving method of prebaked aluminium electrolysis cell |
| CN103572327A (en) * | 2013-10-11 | 2014-02-12 | 酒泉钢铁(集团)有限责任公司 | Control method for lowering aluminum electrolysis anode effect |
| CN103572327B (en) * | 2013-10-11 | 2016-05-04 | 酒泉钢铁(集团)有限责任公司 | A kind of control method that reduces aluminium electrolysis anode effect |
| WO2023246499A1 (en) * | 2022-06-22 | 2023-12-28 | 中国铝业股份有限公司 | Method for reducing perfluorocarbon emissions from aluminum electrolysis |
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Open date: 20080910 |