废电池中氧化锰还原冶炼锰钢的实验研究

为促进我国锌锰废电池集中资源化处理,开发了一种高温回收废电池中锰的新工艺.废电池分选后,破碎和筛分,其中二氧化锰与还原剂碳制成球团,烧结后在感应炉中还原锰,制成锰钢.实验表明,球团中不加表面活性剂的二氧化锰还原率为34%,球团中加入硫化物表面活性剂促进二氧化锰在钢中的还原率,达到80%,钢液中锰含量可达3.97%,本实验条件下,还原最佳时间为20 min.在铸钢生产中可以直接应用该工艺处理废电池.

Experimental study of reduction reaction from used battery MnO2 in steel refinement

The new technology of recovering manganese from used battery in high temperature has been developed in order to promote the centralized treatment of used battery in our country. After used battery is separated, it is crushed and screened. The carbon and black manganese from used battery are made into pellet and then sintered. The manganese steel is refined in induction furnace using the pellet. The experiments show that reduction rate of black manganese is 34% if surface active agent is not added to the pellet, but the reduction rate of black manganese is 80% by adding sulfide surface active agent into pellet. The final manganese content is about 3.97% in the liquid steel. Under the conditions of the experiment, the best reduction time is 20 minutes. The technology can be used to treat used battery in the production process of casting steel.