New Progress on Application of NEUI400kA Family High Energy Efficiency Aluminum Reduction Pot ('HEEP') Technology

摘要

NEUI is the first to have successfully developed NEUI400kAFamily High Energy Efficiency Aluminum Reduction Pot(“NEUI400 Family HEEP”) Technology by incorporating thenumerical simulation technology with the experiences ondeveloping high amperage aluminum reduction pots. And the first230kt/a potline adopting NEUI400(I) HEEP technology in Chinahas been put into commercial operation in Aug., 2008. At present,the operating amperage of the potline is 415kA, average potworking voltage is less than 3.85V, DC energy consumption isless than 12500kWh/t-Al, and the anode effect frequency is lessthan 0.015effects/pot·day.On the basis of summarizing experiences on developingNEUI400(I) HEEP and analyzing the measured physical fieldresults, NEUI has optimized the physical field of NEUI400(I)HEEP by using its proprietary “Physical Field NumericalSimulation and Analysis Software Package for AluminumReduction Pots”. Meanwhile, NEUI has also developed some newtechnologies such as sub-section high level gas collectiontechnology and compressible pot lining technology, etc.NEUI has successively developed NEUI400(II-IV) high energyefficiency aluminum reduction pot (“NEUI400(II-IV) HEEP”)technologies which have been used in Linfeng Aluminum andPower Co., Ltd., Shandong Nanshan Aluminum Co., Ltd. andJinning Aluminum Co., Ltd respectively. The design capacity ofthe three potlines is respectively of 250kt/a, 250kt/a, and 300kt/a.The operating amperage has respectively reached 430kA, 440kA,and 460kA. And more excellent techno-economic indices haveachieved such as average pot working voltage less than 3.85V, DCenergy consumption less than 12500kWh/t-Al, anode effectfrequency less than 0.01effects/pot·day and current efficiency upto 94%, etc.