钼酸根硫化新工艺研究  

Study on Preparation of Molybdate with New Sulphidization Technology

作　　者：张邦胜[1] 张启修[1] 肖连生[1] 

机构地区：[1]中南大学冶金分离科学与工程实验室,长沙410083

出　　处：《稀有金属》2002年第1期35-38,共4页Chinese Journal of Rare Metals

摘　　要：比较目前市场上几种硫化剂的优缺点 ,选择一种新型廉价硫化剂RCS代替NaHS、Na2 S或H2 S ,考察了新型硫化剂在粗钨酸钠溶液中生成硫代钼酸钠分离钨钼的效果。对含WO3 10 0g/L ,Mo 1 2g/L ,NaOH 16g/L的工业钨酸钠溶液控制游离S2 -浓度 4～ 6g/L ,硫化pH值 8 2～ 8 4,70℃硫化 2h ,用 3%N2 6 3单级萃取检查钼硫化效果 ,钼的萃取率可达 96 %以上 ,用紫外 可见光谱判断在此条件下硫化物主要是MoOS3 2 -和MoS4 2 -。A new economical sulfide reagent instead of NaHS, Na 2S or H 2S was selected by contrast with the advantages and drawbacks of several sulfide reagents sold in the market. The effect of separation of molybdenum from tungsten by preparation of sodium thiomolybdate with new sulfide reagent was studied. The results show that the removal rate of molybdenum for one stage extraction can reach over 96% for industrial Na 2WO 4 solution containing WO 3 100 g/L, Mo 1 2 g/L, NaOH concentration 16 g/L, when free S 2- concentration is 4～6 g/L, pH is 8 2～8 4 and sulfide time at 70℃ is 2 h, the form of solfide products of molybdenum is mainly MoOS 3 2- and MoS 4 2- by contrast with UV visible spectrum.

关 键 词：钨钼分离 硫化剂 硫化钼酸钠 炼钨 硫化 

分 类 号：TF841.1[冶金工程—有色金属冶金]