石墨化阴极在铝电解槽中的技术研究与应用

经研究,70%以上的漏炉发生在底部炭块的破损。漏炉的发生,将会导致整个车间断电,电解系列降电流期间,电网波动幅度较大,加速供电设备的损耗,电解槽效应数增加,电能损耗量加大,生产效率降低,且电解槽大修费用较高。对电解生产企业造成巨大的经济损失。因此增加电解槽生产周期,是减少维修费用支出的有效措施之一。该文将阴极炭块石墨化后,增加内衬抗热震、热传导、化学稳定和导电性,阴极压降降低150 mV,槽寿命延长到2 220 d以上。

The research results show that more than 70%of the furnace leakage occurs in the damage of the carbon block at the bottom,and the occurrence of furnace leakage will lead to the power outage of the whole workshop.During the current reduction period of the electrolytic series,the power grid fluctuates greatly and accelerates the loss of power supply equipment.the number of electrolytic cell effect increases,the power loss increases,the production efficiency decreases,and the overhaul cost of the electrolytic cell is higher.It has caused huge economic losses to the electrolysis production enterprises.Therefore,the production cycle of the slot is increased.It is one of the effective measures to reduce maintenance expenses.After graphitization of the cathode carbon block in our company,the thermal shock resistance,heat conduction,chemical stability and electrical conductivity of the lining are increased,the cathode voltage drop is reduced by 150 mV,and the tank life is extended to more than 2220 d.