山东某金矿工艺矿物学及选矿影响因素研究  

Study on process mineralogy and factors affecting mineral processing in a gold mine in Shandong Province

作　　者：王艺竹 王佳怡 向泽慧 南楠 董鸿良 宋宝旭 Wang Yizhu;Wang Jiayi;Xiang Zehui;Nan Nan;Dong Hongliang;Song Baoxu(School of Mining Engineering,University of Science and Technology Liaoning;Shandong Yantai Xintai Gold Mining Industry Co.,Ltd.)

机构地区：[1]辽宁科技大学矿业工程学院 [2]山东烟台鑫泰黄金矿业有限责任公司

出　　处：《黄金》2024年第2期33-36,共4页Gold

基　　金：辽宁科技大学大学生创新创业训练计划(X202310146113)。

摘　　要：山东某金矿金品位为1.4 g/t,属于低品位金矿。为有效回收该金矿中有价金属,对矿石进行工艺矿物学研究。研究结果表明,矿石中部分金矿物以自然金形式存在,部分金矿物以黄铁矿等硫化矿物为载体的包裹金形式存在。其中,以磁黄铁矿为载体的金矿物,由于单体解离度较低,天然可浮性较差,难以通过浮选回收,是导致金矿物损失的主要原因。实现以磁黄铁矿为载体的金矿物综合利用,有助于进一步提高金回收率,对该金矿进行浮选和尾矿磁选联合试验。试验结果表明:增加磨矿细度,可有效提高有用矿物单体解离度;浮选试验可将浮选尾矿中金、硫品位分别降低至0.35 g/t、0.48%;尾矿磁选作业可以将尾矿中金、硫品位分别降低至0.14 g/t和0.20%。研究结果可为同类型金矿床的开发和利用提供借鉴。The gold grade of a gold ore in Shandong is 1.4 g/t,which belongs to low-grade gold ores.To recover valuable metals from the ore effectively,the process mineralogy of the ore was studied.The research results showed that some gold minerals in the ore existed in the form of native gold,while others existed in the form of encased gold with sulfide minerals such as pyrite.Among them,the gold minerals carried by pyrrhotite were the main reason for the loss of gold minerals due to their low monomer dissociation degree and poor natural floatability,which made them difficult to recover by flotation.Therefore,comprehensive utilization of gold minerals carried by magnetite could help improve the gold recovery rate.The flotation and tailings magnetic separation experiments were jointly conducted.The experimental results showed that increasing the grinding fineness can effectively improve the monomer dissociation degree of useful minerals;the flotation experiment can reduce the gold and sulfur grade in the flotation tailings to 0.35 g/t and 0.48%,respectively;the tailings magnetic separation operation can reduce the gold and sulfur grade in the tailings to 0.14 g/t and 0.20%,respectively.This research can provide references for the development and utilization of similar gold deposits.

关 键 词：金矿 工艺矿物学 磨矿细度 浮选 磁黄铁矿 磁选 

分 类 号：TD952[矿业工程—选矿]