内蒙古某锌矿氧压浸出渣有价组分形态特征  

Morphological characteristics of valuable components inan oxygen pressure leaching residue produced froma zinc ore leaching process in Inner Mongolia

作　　者：李小伟 先永骏[1] 刘全军[1] 杨大锦 王国栋 LI Xiao-wei;XIAN Yong-jun;LIU Quan-jun;YANG Da-jin;WANG Guo-dong(Faculty of Land Resource Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan Chihong Zinc and Germanium Co.Ltd.,Qujing 655011,Yunnan,China;Hulunbuir Chihong Mining Co.Ltd.,Hulunbuir 021300,Inner Mongolia,China)

机构地区：[1]昆明理工大学国土资源工程学院,昆明650093 [2]云南驰宏锌锗股份有限公司,云南曲靖655011 [3]呼伦贝尔驰宏矿业有限公司,内蒙古呼伦贝尔021300

出　　处：《矿冶》2022年第5期116-124,共9页Mining And Metallurgy

基　　金：国家自然科学基金资助项目(52264027)。

摘　　要：硫化锌矿浸出渣中有价元素丰富,是重要的二次资源,但因其性质、结构极为复杂,实践中分选回收效率往往较低。深入研究浸出渣工艺矿物学性质对其高效回收具有重的理论价值。对内蒙古某中大型锌冶炼厂的氧压锌浸出渣进行了深入的工艺矿物学研究。结果表明:锌浸出渣含硫44.33%、铅2.65%、锌4.24%、银192 g/t,主要有用矿物为单质硫(硫磺)、闪锌矿、铅矾等,银可能主要赋存于含铅矿物中;含有近20%的可溶性锌和铁硫酸盐,极少量的黄铜矿和黄铁矿;浸出渣颗粒粒度小,无典型的结构和构造;铅、锌和铜矿物主要以毗连和包裹的形式与硫磺连生,且主要集中在-10μm粒级,该粒级中银的分布率达到86.47%,是后续分选回收需要注意的重点。The residue produced from zinc sulfide leaching process often contains abundantly valuable elements,and it is an important secondary resource.However,its enrichment and recovery are still low in industry practice due to its extremely complex properties and structures.Deep insight into process mineralogy of residue potentially provides an important theoretical value for the efficient recovery technology development of residue.In this work,the occurrence features of valuable elements in a leaching residue from a large-scale zinc metallurgy plant in Inner Mongolia were determined.The results show that the residue contains 44.33%sulfur,2.65%lead,4.24%zinc and 192 g/t silver.The main useful minerals are elemement sulfur(S),sphalerite,lead alum and so on.Silver may mainly exist in lead bearing minerals.Approximately 20%soluble zinc and iron sulfate,and a small amount of chalcopyrite and pyrite are found in the residue.The leaching residue particles are ultra-fine size and disappears obvious structure and configuration.Most amount of lead,zinc and copper minerals are mainly associated with sulfur in the forms of adjacent and wrapped intergrowths with-10μm particle size in the residue.It should be noted that the distribution of silver in-10μm fraction reaches as high as 86.47%,which is the key factor affecting subsequent separation performance.

关 键 词：浸出渣 工艺矿物学 银 硫 

分 类 号：TD912[矿业工程—选矿] TD913