用电硅热法熔炼中碳锰铁,由于锰回收率较低,必须用较富的锰矿。目前国外用矿含锰一般在45%以上,国内兄弟厂也都使用含锰35%以上的锰矿。我厂使用锰矿品位都很低,入炉矿平均含锰不大于32%(见表1)。用这样的贫矿熔炼中碳锰铁,要带来一系列的问题,因此生产操作方面也有其特点。生产初期,出废品多、电耗高、炉衬寿命也 Electric smelting of carbon ferromanganese thermal method, due to lower recovery of manganese, manganese must be rich with manganese. At present, foreign countries with manganese ore generally above 45%, the domestic brother plant also uses more than 35% manganese ore. I plant using manganese ore grade is very low, into the furnace ore containing manganese is not more than 32% (see Table 1). The use of such poor ore melting carbon ferromanganese, to bring a series of problems, so the production operations also have their own characteristics. Early production, a lot of waste, high power consumption, furnace lining life too