金锑混合浮选精矿高效分离选矿工艺研究  

Study on High Efficiency Separation Process of Gold-Antimony Bulk Flotation Concentrate

作　　者：阿斯古丽 杨枝露 高翔 苟俊豪 A Siguli;YANG Zhilu;GAO Xiang;GOU Junhao(Xinjiang Research Institute of Non-ferrous Metals Co.,Ltd.,Urumqi 830026,China)

机构地区：[1]新疆有色金属研究所有限公司,乌鲁木齐830026

出　　处：《有色金属（选矿部分）》2024年第11期87-91,共5页Nonferrous Metals（Mineral Processing Section）

基　　金：新疆维吾尔自治区重点研发专项项目(2022B03016)。

摘　　要：在选矿领域辉锑矿与黄铁矿的高效分离一直是技术难点。某金锑混合浮选精矿中金主要包裹在黄铁矿中,有用金属矿物主要为辉锑矿和黄铁矿。针对该混合精矿,采用硫酸预处理—浮选分离新工艺进行浮选分离试验研究,结果表明,当混合精矿Au品位为66.28 g/t、Sb品位为12.94%,采用硫酸脱药预处理,在残余药剂的作用下,加入高效抑制剂YTJ,经过一粗一精浮选分离作业,获得高锑金精矿Sb品位34.10%、Au品位70.20 g/t、Au回收率36.65%、Sb回收率90.08%;低锑金精矿Au品位64.20 g/t、含Sb 1.74%、Au回收率63.35%的良好指标,对金锑混合浮选精矿高效分离提供了新思路。In the field of mineral processing,the efficient separation of stibnite and pyrite has always been a technical challenge.In a gold-antimony mixed flotation concentrate,gold is mainly encapsulated in pyrite,and the valuable metallic minerals are mainly stibnite and pyrite.In order to address this mixed concentrate,a new process of sulfuric acid pretreatment followed by flotation separation was adopted for experimental research.The results showed that when the gold grade in the mixed concentrate was 66.28g/t and the antimony grade was 12.94%,sulfuric acid was used for desliming pretreatment.Under the action of residual reagents,a highly efficient inhibitor called YTJ was added.After one roughing and one scavenging flotation separation operation,a high-antimony gold concentrate with antimony grade of 34.10%,gold content of 70.20g/t,gold recovery of 36.65%and antimony recovery of 90.08%was obtained.A lowantimony gold concentrate with gold grade of 64.20g/t,antimony content of 1.74%,and gold recovery of 63.35%was also achieved.These results provide a new approach for the efficient separation of goldantimony bulk flotation concentrates.

关 键 词：金锑混合精矿 硫酸 预处理 金锑分离 辉锑矿 黄铁矿 

分 类 号：TD922[矿业工程—选矿]