二次镍精矿“除铁脱硫”金属化熔炼工艺研究  

Study on the“Iron Removal and Desulfurization”Metallization Smelting Process of Secondary Nickel Concentrate

作　　者：顾明杰[1] 祁永峰 蔡栋元[1] 陈学刚[2] 陆金忠[2] 李智[1] 石润泽 GU Ming-jie;QI Yong-feng;CAI Dong-yuan;CHEN Xue-gang;LU Jin-zhong;LI Zhi;SHI Run-ze

机构地区：[1]金川集团股份有限公司,甘肃金昌737100 [2]中国恩菲工程技术有限公司,北京100038

出　　处：《有色设备》2022年第6期62-66,共5页Nonferrous Metallurgical Equipment

摘　　要：本文通过对“富氧侧吹氧化熔炼+炉渣集中还原”周期性作业处理二次镍精矿生产金属化镍锍工艺可行性的研究,结果表明:经过集中还原处理后渣含镍由7.63%可降至0.66%,产出金属化镍锍(Ni+Cu≥76%,Fe<3%,S:16%~20%),达到了二次镍精矿的短流程“熔化、除铁、降硫”的目的。最佳工艺参数为氧料比10~45 Nm^(3)/t精矿,还原剂率为0.5%~1%。“富氧侧吹熔池熔炼+炉渣集中还原”周期作业方式可产出金属化镍锍,明显提高镍阳极板成材率,大幅提高热利用率、生产效率和产能,并降低生产成本。This paper studies the feasibility of the process of producing metallized nickel matte from secondary nickel concentrate by periodic operation of“oxygen-enriched side-blowing oxidation smelting+centralized reduction of slag”.The results show that the nickel content in the slag can be reduced from 7.63%to 0.66%after centralized reduction treatment,producing metallized nickel matte(Ni+Cu≥76%,Fe<3%,S:16%-20%),which achieves the goal of the short“melting,iron removal,sulfur reduction”process of secondary nickel concentrate.The optimum process parameters are concentrate with the ratio of oxygen to feed of 10-45Nm^(3)/t and reductant ratio of 0.5%-1%.The periodic operation method of“oxygen-enriched side-blowing bath smelting+centralized reduction of slag”can produce metallized nickel matte,significantly improve the product yield of nickel anode plates,increase the heat utilization rate,production efficiency and capacity,and reduce production cost.

关 键 词：富氧侧吹熔池熔炼技术 反射炉 二次镍精矿 金属化镍锍 氧料比 

分 类 号：TF815[冶金工程—有色金属冶金]