某硫化铜镍矿选矿过程产品工艺矿物学研究  

Process mineralogy study on processing products obtained during the beneficiation process of a copper nickel sulfide ore

作　　者：陈伟[1] 张富强 CHEN Wei;ZHANG Fu-qiang(Jinchuan Group Co.Ltd.,Jinchang 737100,Gansu,China)

机构地区：[1]金川集团股份有限公司,甘肃金昌737100

出　　处：《矿冶》2020年第3期117-122,共6页Mining And Metallurgy

摘　　要：在采用光学显微镜分析的基础上,结合运用扫描电镜、X射线能谱、X射线衍射、ICP和化学物相分析等较系统地分析了某硫化铜镍矿选别过程产品,包括一、二段原矿,一、二段精矿和尾矿中产品矿物组成及其主要矿物的单体解离等。结果表明,铜镍矿原矿中约10%的镍和5%的铜元素以氧化态存在,微量硫化相镍、相对较多的硫化相铜是分布于氢镁硫铁矿和墨铜矿中,难以被浮选捕收;精矿中的氧化镁主要来自蛇纹石、橄榄石、滑石、绿泥石、透闪石、透辉石,相对较粗颗粒与硫化物不能有效解离,控制相对较粗粒级中氧化镁的单体解离及单体矿物的上浮,控制微细粒氧化镁矿物的夹杂捕收,是降低精矿氧化镁的关键。On the basis of observation and analysis by optical microscope,combined with scanning electron microscope,X-ray energy spectrum,X-ray diffraction,ICP,chemical phase analysis and other test and analysis,the products of a copper nickel sulfide ore separation process are systematically analyzed,including the mineral composition and monomer dissociation of primary and secondary ore,primary and secondary concentrate and tailings.The results show that about 10%of nickel and 5%of copper elements in the original copper nickel ore exist in oxidation state,and there are trace nickel sulfide and relatively more copper sulfide that are distributed in hydromagnesia pyrite and chalcopyrite,which are difficult to be collected by flotation.The magnesium oxide in the concentrate mainly comes from serpentine,olivine,talc,chlorite,tremolite and diopside,and the relatively coarse particles and sulfides cannot be effectively dissociated.Controlling the monomer dissociation and floatation of MgO in the relatively coarse particles and the collection of fine MgO mineral inclusions are the key to reduce MgO content in the concentrate.

关 键 词：硫化铜镍矿 单体解离 工艺矿物学 浮选 氧化镁 

分 类 号：TD91[矿业工程—选矿] TD952