盐酸预处理—软锰矿+硫酸协同浸出钼钨矿工艺研究  

Hydrochloric Acid Pretreatment—Pyrolusite+Sulfuric Acid Synergistic Leaching Process of Molybdenum Tungsten Ore

作　　者：陶乐 张勤 陈俊英[1] 高瀚杰 刘海鹏 杨洪英 TAO Le;ZHANG Qin;CHEN Junying;GAO Hanjie;LIU Haipeng;YANG Hongying(School of Metallurgy,Northeastern University,Shenyang 110819,China;Key Laboratory for Ecological Metallurgy of Multi-metallic Mineral,Northeastern University,Shenyang 110819,China)

机构地区：[1]东北大学冶金学院,辽宁沈阳110819 [2]东北大学多金属矿生态冶金重点实验室,辽宁沈阳110819

出　　处：《湿法冶金》2024年第4期385-390,共6页Hydrometallurgy of China

摘　　要：针对国内某公司低品位混合型钨钼矿结构和成分复杂、难浮选且难浸出等问题,研究了盐酸预处理—软锰矿+硫酸协同浸出钼钨矿中的钼钨,考察了各因素对钨钼浸出率的影响。结果表明:在盐酸浓度1.5mol/L、液固体积质量比6.5/1、常压条件下,对钨钼矿石进行盐酸预处理;在盐酸预处理后滤渣20g、矿石粒度200目、软锰矿用量4g、硫酸浓度8mol/L,液固质量体积比5/1、温度90℃、浸出时间3h的最佳条件下,钼、钨浸出率分别为83%、73%。In view of the complex structure,difficult flotation and difficult leaching of low-grade mixed tungsten and molybdenum ore of a domestic company,the synergistic leaching of molybdenum and tungsten from molybdenum tungsten ore by hydrochloric acid pretreatment—pyrolusite+sulfuric acid was studied.The effects of various factors on the leaching rate of tungsten and molybdenum were investigated.The results show that under the conditions of hydrochloric acid concentration of 1.5 mol/L,liquid volume to solid mass ratio of 6.5/1 and atmospheric pressure,the tungsten and molybdenum ores are pretreated with hydrochloric acid.Under the optimal conditions of filter slag of 20 g,particle size of 200 mesh,pyrolusite dosage of 4 g,sulfuric acid of 8 mol/L,liquid volume to solid mass ratio of 5/1,temperature of 90℃ and leaching time of 3 h,the leaching rates of molybdenum and tungsten are 83% and 73%,respectively.

关 键 词：钼钨矿 盐酸 预处理 软锰矿 硫酸 协同浸出 钼 钨 

分 类 号：TF803.21[冶金工程—有色金属冶金] TF841.1TF841.2