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China 's aluminum industry is facing enormous pressure on energy saving . In the case of domestic production capacity has been surplus , current slot generation technology and control technology to improve and develop the current slot integrated energy-saving technology is a realistic and effective way to achieve emission reduction targets . Development 200kA grade aluminum cell energy-saving technologies , and successful implementation . The main research results are as follows : ( 1 ) to develop a set of five low - narrow - a high \density , narrow material balance workspace , workspace of narrow thermal equilibrium , the regulatory region of the narrow magnetic fluid stability , high anode current density ) as the main feature level 200kA aluminum reduction cell energy - saving technology , the simulation results show that , under the conditions of the technology , electrolytic slot each physical field is reasonably reliable . ( 2) the development of a smart energy-saving technology supporting polycyclic collaborative control technology to achieve a multi-objective ( high efficiency , low power consumption , low-emission , high- stability ) optimization function calculation , the electrolyzer multi- parameter critical state ( including critical polar distance , the critical superheat and critical the alumina concentration ) dynamic Intelligent recognition and intelligent multi- ring ( material balance control loop , heat balance control loop and stability of the control loop ) collaborative optimization and control , to ensure that the electrolyzer in critical state for a long time \(3) energy-saving technologies ( including energy-saving technology and energy-saving control technology ) in the successful implementation of 200kA electrolysis series , the series average cell voltage down to 3.85V, the current efficiency is maintained at between 93 to 94% , the DC consumption dropped 12700kWh / t · Al, saving results ; same time, the test shows that the form of structured 200kA the electrolyzer slot bore an integrated energy-saving technology , the bath temperature significantly reduced the reasonable control of alumina concentration , the cell voltage stable , with good production stability .
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