红土镍矿电炉熔炼提取镍铁合金的研究  

Study on the Process of Extraction Ferronickel from Laterite by Electric Smelting

作　　者：刘志宏[1] 杨慧兰[1] 李启厚[1] 朱德庆[2] 马小波[1] 

机构地区：[1]中南大学冶金科学与工程学院,长沙410083 [2]中南大学资源加工与生物工程学院,长沙410083

出　　处：《有色金属（冶炼部分）》2010年第2期2-5,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家重大产业技术开发专项项目(发改办高技[2008]第301号)

摘　　要：采用电炉直接还原熔炼工艺从红土镍矿中提取镍铁合金,研究了还原剂(焦粉)和熔剂(石灰石)配比对合金中镍品位、金属回收率及硫、磷在渣和合金中分配比(LS,LP)的影响及行为。综合考虑镍铁合金中镍的品位和金属回收率,试验确定了最佳熔炼条件:焦粉配比11%,熔剂配比11%。在最佳条件下,合金中镍品位为22.8%,镍回收率达97.6%,LS,LP分别为0.024和0.145。The process of direct reducing smelting by electric furnace was adopted to extract ferronickel from laterite.The effect of reductant（coke） and flux（limestone） ratio on nickel grade in ferrous-nickel alloy and metal recovery were studied,effect and mechanism of slag component on sulphur and phosphorus distribution ratio（LS,LP） were analyzed.Comprehensively considered nickel grade and metal recovery,determined the optimum coke proportion was 11% and the optimum flux proportion is 11%.Under the optimal smelting conditions,nickel recovery was 97.6% and nickel grade was 22.8%,LS,LP was 0.024,0.145 respectively.

关 键 词：红土镍矿 电炉熔炼 镍铁合金 硫分配比 磷分配比 

分 类 号：TF111[冶金工程—冶金物理化学]