Sustainable Mining and Metallurgy

The super-large bottom blowing furnace in a smelter had been running for five years. Through the statistics of brick erosion in each part of the furnace body during overhaul, the optimization measures such as controlling oxygen lance pressure, furnace temperature, slag type and matte grade were put forward. In addition, the operation of the converter was prone to accidents, and there were problems such as deterioration of the field environment, excessive exhaust gas, coking and shedding stuck to the membrane wall, and blockage of the oxygen gun. It was proposed that the safety inspection of the furnace body should be carried out before the converter operation of the bottom blowing furnace, and the pressure of the oxygen gun should be adjusted in time with the change of the rotation angle of the furnace. Furthermore，the copper jacket of outlet of the furnace and the membrane wall were optimized and reformed, so as to eliminate the abnormal situation in the process of the converter.