.230 Ka, Electrolyzer Bridge Calcined Start With The Technical Conditions Of The Production Process Optimization

Energy saving, consumption reducing and baking start-up technology in large-scale pre-baked aluminum electrolysis cell have been being come to attention by producing managers and academicians. In this article, according to many year's accumulation in aluminum electrolysis theory and practice, the author selected 230kA pre-baked cell as study object, baking start-up of electrolysis cell and producing-related technology in process of aluminum electrolysis were optimized, and some research results were as follow.Firstly, after having analyzed primary baking start-up way in producing locale, some disadvantages were discovered, and improved way was put forward. The producing practice has proved, after improved coke-powder baking start-up technology was applied, the current distribution of cathode and temperature distribution of cell were more symmetrical, the temperature rising rate was more reasonable , and the part superheating of cell was avoided accordingly, moreover, the bottom paste could coke better after improved technology was applied, so the electrolysis cells' life was prolong, and the produce cost was reduced.Secondly, according to the statue of low current efficiency, the electrolyte temperature, the molecule ratio, the concentration of alumina, the anode effect coefficient, the electrode distance, the cell pressure, the electrolyte and aluminum level were all optimized. The producing results showed, which comparing with contract cells, the current efficiency of optimized cells has enhanced 0.45 percent and arrived to 92.75 percent.Thirdly, the improved baking start-up and technics conditions were put in practice for one year, as well as plus scientific manage, the compositive examine results showed, since the optimized technology was applied, high current efficiency was obtained, the worker' laboring intension was debased. Moreover, the cells' life was prolong.