铜冶炼大型底吹炉炉体检修探索与转炉操作优化

Exploration on Overhaul of Large Bottom Blowing Furnace in Copper Smelting and Practice of Optimizing Converter Operation

某冶炼厂的超大型底吹炉运行了5年,通过大修期间统计炉体各部分炉砖的侵蚀情况,提出了控制氧枪压力、炉温、渣型和铜锍品位等优化措施,使炉砖烧蚀速度大幅减慢。此外,就转炉操作容易出现事故,存在场环境恶化、尾气超标、结焦脱落卡住膜式壁、氧枪堵塞的问题,提出底吹炉转炉作业前要对炉体进行安全检查,随炉转动角度的变化及时调整氧枪压力等措施,并优化改造了炉子出烟口的铜水套和膜式壁,从而杜绝了转炉过程中异常情况的出现。

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.