某红土镍矿焙烧渣磁选工艺研究  

Study on Magnetic Separation Process of Laterite Nickel Ore Roasting Slag

作　　者：余鹤雷 王闯 高起鹏 高文鑫 YU He-lei;WANG Chuang;GAO Qi-peng;GAO Wen-xin(Shenyang Research Institute of Nonferrous Metals Co.,Ltd.,Shenyang 110141,China)

机构地区：[1]沈阳有色金属研究院有限公司,辽宁沈阳110141

出　　处：《有色矿冶》2024年第5期23-26,共4页Non-Ferrous Mining and Metallurgy

摘　　要：通过对红土镍矿焙烧渣性质研究,确定渣中的镍矿物为强磁性矿物,可通过优化磁选工艺,实现对该焙烧渣中镍等有价金属的有效分离和提取。从样品分析、矿物组成、粒度筛分等入手,对磨矿细度、磁场强度、工艺流程等进行考察,最终确定一粗一精的工艺流程及一段磁选磁场强度2400 Oe、再磨细度-0.038 mm占40%、精选磁选磁场强度1600 Oe的工艺条件,获得磁精矿含镍品位4.32%,镍回收率86%的较理想指标。Through the study of the properties of laterite nickel ore roasting slag,it is known that the nickel minerals in the slag are strong magnetic minerals,and the effective separation and extraction of valuable metals such as nickel in the roasting slag can be achieved by optimizing the magnetic separation process.In this paper,through the experimental analysis,mineral composition,particle size screening,etc.,the grinding fineness,magnetic field strength of roughing,process flow,etc.are investigated;finally,the process flow of one roughing and one cleaning and the process conditions of magnetic field intensity of 2400 Oe,regrinding fineness of -0.038 mm mesh accounting for 40%,magnetic field intensity of 1600 Oe were determined.The ideal index of nickel grade of 4.32% and nickel recovery of 86% was obtained.

关 键 词：红土镍矿 磁选 磨矿细度 磨矿时间 

分 类 号：TD954[矿业工程—选矿]