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The Study Of The Enlarge Of Current In 160KA Cell

Posted on:2005-12-27Degree:MasterType:Thesis
Country:ChinaCandidate:X WangFull Text:PDF
GTID:2121360122496814Subject:Non-ferrous metallurgy
Abstract/Summary:PDF Full Text Request
Through multifarious test analyst and calculation of the magnetic field?flow field?voltage equilibrium?current efficiency and heat balance about the cell of Qinghai Branch Company, which expand its current from 160kA to 180kA, the conclusion is below :1) It is completely feasible in technical about prolong the anode from 1400mm to 1500mm while keep the configure of the inner lining structure and bus unchanged, and the best scheme is extend each anode 50mm to outside.2) Although the cell magnetic intensity will increase to some degree, the normal electrolysis production isn't effected, while at the same time, the cell velocity of flow dispatch will decrease, which will reduce the fluctuation of aluminum fluid, and increase the current efficiency.3) After the enlarge of current, anode current density?anode and cathode voltage will increase little or none, which will not ruin the anode operation condition and will no increase the electricity consume.4) Under present 160kA cell current density, it's able to reduce 2mm of the polar distance, and the cell cathode current density will increase after the enlarge of current, this is profitable for the improvement of current efficiency. The propriety drop of cell voltage will not only stable the thickness of ledge but also reduce aluminum electricity consume per ton about 150kWh.In the condition of small amount of investment, the enlarge current reconstruct of the cell will increase the output of aluminum and improve economy index such as: current efficiency?electricity consume and so on. This would be excellent spread value.
Keywords/Search Tags:aluminum electrolysis, enlarge current, current efficiency, electricity consume per ton aluminum.
PDF Full Text Request
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