【摘要】 本文研究了用硫化物沉淀法除去粗钨酸钠溶液中钼砷硅的方法。并探讨了硫化物沉淀的原理。在一定的实验条件下,除钼、砷、硅的效率均达到95％以上,净化后溶液中杂质含量完全符合技术要求。钨的损失在3％左右。更多还原

【Abstract】 The removal of molybdenum, arsenic and silicon from crude sodium tungstate solution was effected by sulfide precipitation method with the addition of appropriate quantity of sodium sulfide and sulfuric acid and under suitable conditions. The Mo, As and Si removed all exceeded 95% of each of their total amounts previously present in the crude solution while the loss of tungsten during the purification amounted to about 3%.更多还原