摘要
高炉冶炼锰铁时,锰的回收率波动很大,在60—90％范围,矿比取决于入炉矿的平均含锰量和锰的回收率。每提高锰回收率一度,可降低锰矿消耗44.6kg/t,降低焦比27.7kg/t,增产1.57％,降低成本25.53元/t,并可提高产品质量。锰在渣中的化学损失与渣量和渣中MnO成正比,流失锰为入炉总锰量的16.8％,占流失总量的60.27％,为炉顶损失。采用高MgO渣操作,是降低渣中MnO的有效措施。已使MnO含量降至4—5％,Mn回收率已达85％。
In the smelting of ferro—manganese in blast furnace, the variation of manganese recovery rate is so large that it ranges from 60—90％. The ore ration depends on the avereage manganese content of feed ore and manganese recovery. The consumption of manganese ore can be reduced by 44.6kg/t,coke ratio by 7.7kg/t,the cost by 25.53￥(Renminbi),the production can increased by 1.57％ and the quality of product can be improved when the manganese recovery is increased by 1％. Manganese's chemical loss in slag is directly proportional to the quantity of slag and MnO in slag;lost manganese is as 16.80％ as the total of manganese quantity which is fed into the furnace,accounting for 60.27％ of the total lost quantity. Another loss is one from top of the furnace. The operation of high CaO/SiO_2. MgO slag is an alternative process for reducing MnO in slag.
出处
《中国锰业》
北大核心
1992年第1期26-29,共4页
China Manganese Industry
关键词
锰铁
高炉
冶炼
锰
回收率
Blast Furnace Smelting Ferro-Manganese
