矿热炉冶炼铬基不锈钢母液试验研究

Experimental Study on Smelting Mother Liquor of Chromium Base Stainless Steel by Using SAF

研究目的旨在打破传统不锈钢冶炼工艺,利用矿热电炉处理低品位铬矿石,冶炼出不锈钢生产所需的含铬为18%～25%的铬基母液,节约资源与能源,提高金属回收率,降低不锈钢生产成本,为提高含铬不锈钢产品的市场竟争力开辟一条新的工艺路线。在研究矿热电炉冶炼铬基不锈钢母液的理论基础上,针对其熔炼工艺特点,通过试验研究系统地考察了炉渣碱度、还原剂配比、二次电压等几个主要因素对铬基不锈钢母液电炉熔炼指标,即铬基不锈钢母液中铬元素金属含量及铬回收率的影响,最终确定了铬基不锈钢母液矿热电炉熔炼的可行性,为工业生产设计提供依据。

The purpose of this study is to break the traditional stainless steel smelting process,process low-grade Chrome ores by using SAF to smelt chrome-contained 18%-25%chrome-base mother liquor for stainless steel production requirements,thus to save resources and energy,increase metal recovery,reduce production cost,develope a new process route of chrome-containing stainless steel products.For this reason,on theoretical basis of smelting chrome-base stainless steel mother liquor by SAF,through repeated test and research of specific melting process characteristics,the paper systematically investigates such main factors as slag basicity,reducing agent ratio,secondary voltage and other major factors affecting the smelting index,i.e chrome content and recovery in chrome-base stainless steel mother liquor.Finally,the feasibility of SAF smelting chrome-base stainless steel mother liquor is proved,and the basis for industrial production design is provided.