Development of Energy-saving Technology Based on Steady Flow and Heat Preservation and Its Application in a 400 kA Electrolysis Series
Received:April 02, 2020   Revised:April 09, 2020   Accepted:April 10, 2020      Published Online:June 20, 2020
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DOI:doi:10.3969/j.issn.1007-7545.2020.07.010
KeyWord:steady flow and heat preservation; voltage balance; energy balance
                    
AuthorInstitution
WANG Yan-fang 中铝郑州有色金属研究院有限公司
CHAI Deng-peng 中铝郑州有色金属研究院有限公司
CAO Shao-feng 中铝郑州有色金属研究院有限公司
Gao Bao-tang 包头铝业有限公司
WANG Jun-qing 中铝郑州有色金属研究院有限公司
ZHOU Yun-feng 中铝郑州有色金属研究院有限公司
LI Chang-lin 中铝郑州有色金属研究院有限公司
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Abstract:
      Research results of energy-saving technology based on steady flow and heat preservation (FHEST) and its application in a 400 kA series were mainly introduced. FHEST mainly includes voltage balance optimization, cathode current stabilizing optimization and energy balance design optimization. Application results of FHEST in a 400 kA series electrolysis cell show that series current efficiency is 92.22%, average voltage is 3.882 V, DC power consumption for one ton aluminum is 12 543 kWh, and average cell bottom voltage drop is 267 mV. Compared with traditional cell, average voltage of new technology cell drops by 86 mV, DC power consumption for one ton aluminum reduces by 507 kWh, and average cell bottom voltage drop reduces by 44 mV.
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