从高压碱浸液中提取钼钨新工艺  

New Process for Molybdenum and Tungsten Extraction from High Pressure Alkaline Leaching Solution

作　　者：曹耀华[1] 刘红召[1] 高照国[1] 杨绍文[1] 

机构地区：[1]中国地质科学院郑州矿产综合利用研究所,国家非金属矿资源综合利用工程技术研究中心,郑州450006

出　　处：《有色金属（冶炼部分）》2012年第10期27-29,41,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：针对某氧化钼钨粗精矿高压碱浸后得到的浸出液钼钨含量均较高、钼钨分离困难的特点,确定了钼钨浸出液镁盐净化除杂、钼钨共沉淀、干燥、钼钨酸铵制备的工艺流程,主要考察了氯化铵用量、沉淀时间、pH、温度、溶液浓度对钼沉淀率的影响。结果表明,最终获得的产品含Mo 47.57%、WO310.13%,杂质磷、砷分别为0.0027%、0.041%,产品符合生产钨钼合金的要求。According to the characteristics of high tungsten and molybdenum content in the high pressure al-kaline leaching solution of tungsten and molybdenum oxide rough concentrate, a new process for molyb,de-num-tungsten extraction was adopted including purification with magnesium salt, molybdenum-tungsten co-precipitation, drying, preparation of ammonium molybdate-tungstate. The effects of ammonium chlo-ride dosage, precipitation time, pH, temperature, and solution concentration on molybdenum precipitation rate were investigated. The results show that the final products, i. e. , ammonium molybdate-tungstate, contain 47. 57% Mo and 10.13% WO3, respectively, and the impurities of phosphorus and arsenic are 0. 0027% and 0. 041%, respectively. This product meets requirement of molybdenum-tungsten alloy pro-duction.

关 键 词：高压浸出液 钼 钨 钼钨酸铵 

分 类 号：TF841.2[冶金工程—有色金属冶金]