摘要
研究了用硫化钠-氢氧化钠复合浸出剂从钒钼铅矿中浸出并分离钒、钼。试验结果表明,钒钼铅矿用碱浸出后,钼、钒进入溶液,而Pb、Ag等留在渣中。最佳浸出条件为:硫化钠用量为理论量的1.1倍,液固体积质量比4∶1,OH-浓度约1.5mol/L,反应温度95～100℃,反应时间3h;浸出液用镁盐除硅后再用氯化铵沉淀钒,钒沉淀率大于95%;用盐酸与氯化钙沉淀钼,钼沉淀率大于99%。
aching and separation of vanadium and molybdenum from eosite has been studied. The results showed that vanadium and molybdenum were leached into solution,and lead and silver were left in residue in the composite system of sodium sulphide and sodium hydroxide. The optimum leaching conditions were realistic usage to theoretical amount of sodium sulphide of 1. 1 times, sodium hydroxide concentration of 1.5 mol/L,V（liquid） ： V（solid） of 4 ： 1,reaction temperature of 95 ℃ ,reaction tiome of 3 h. The leaching solution was purified using magnesium salt, then precipitated vanadium using ammonium chloride, the precipitation rate of vanadium was greater than 95 %. Then molybdenum was precipitated using hydrochloric acid and calcium chloride. Molybdenum precipitation rate was 99%.
出处
《湿法冶金》
CAS
北大核心
2013年第3期147-150,共4页
Hydrometallurgy of China
关键词
钼钒铅矿
硫化钠
氢氧化钠
浸出
钒
钼
分离
eosite
sodium sulfide
sodium hydroxide
leaching
vanadium
molybdenum
separation
