青海某金矿床金矿石细磨实验研究  

Experimental study on fine grinding of gold ore in a certain gold deposit in Qinghai Province

作　　者：吴天文 刘文 吴冬 段运锋 WU Tian-wen;LIU Wen;WU Dong;DUAN Yun-feng(Qinghai Haixinke Mining Co.,Ltd,Menyuan 810300,China;Qinghai Nonferrous Second Geological Exploration Institute,Xining 810007,China)

机构地区：[1]青海海鑫科矿业有限公司,青海门源810300 [2]青海有色第二地质勘查院,青海西宁810007

出　　处：《世界有色金属》2024年第17期193-195,共3页World Nonferrous Metals

摘　　要：本文通过对青海某金矿矿石细磨实验研究取得如下认识:发现实验中最佳的磨矿浓度为65%,磨矿浓度于钢球直径似存在非线性关系,可以按钢球的直径计算最佳的磨矿浓度;用φ20mm的钢球磨矿,-200目的产量最高,达到58.56%;确定了钢球的配比,在细磨中,加入1种尺寸的钢球即可;提出了钢球在球磨机中的填充率,在35%-45%之间都比较好,40%最佳;用石灰、硅酸钠、六偏磷酸纳、三聚磷酸钠、氯化铵、氯化钠和三氯化铁七种化合物为助磨剂,助磨效果都不好。本文研究为青海金矿选矿实验研究提供参考。This article has gained the following understanding through experimental research on fine grinding of ore from a gold mine in Qinghai:it was found that the optimal grinding concentration in the experiment was 65%,and there seems to be a nonlinear relationship between grinding concentration and steel ball diameter.The optimal grinding concentration can be calculated based on the diameter of the steel ball;Grinding with a 20mm steel ball resulted in the highest yield of-200 mesh,reaching 58.56%;Once the ratio of steel balls has been determined,one size of steel ball can be added to the fine grinding process;The filling rate of steel balls in the ball mill was proposed,which is relatively good between 35%and 45%,with 40%being the best;Seven compounds including lime,sodium silicate,sodium hexametaphosphate,sodium tripolyphosphate,ammonium chloride,sodium chloride,and ferric chloride were used as grinding aids,but the grinding effect was not good.This study provides a reference for the experimental research of mineral processing in Qinghai gold mine.

关 键 词：金矿石 细磨实验 磨矿浓度 钢球配比 填充料 助磨剂 

分 类 号：TD91[矿业工程—选矿]