在生产钼酸钠的过程中,都存在着含Mo3%～10%的碱浸渣中钼的回收问题.用苏打加氧化剂焙烧热水浸出工艺可有效地回收其中的钼.除硅结晶钼酸钠,含Mo≥39%,水不溶物<0.03%;用氯化钙溶液沉淀钼酸钙,含Mo>40%,母液残M0<1g/L;用氯化钡溶液沉淀钼酸钡,含Mo>29%,母液残Mo<0.03g/L.钼的总回收率均可大于70%.(寿庭木摘) In the process of producing sodium molybdate, there is the problem of recovery of molybdenum in alkaline leaching residue containing 3% ~ 10% Mo. The molybdenum recovery from the hot water leaching process with soda and oxidizer can effectively recover molybdenum. Sodium, containing Mo ≥ 39%, water insoluble <0.03%; Calcium molybdate precipitated with calcium chloride solution containing Mo> 40%, the mother liquor residue M0 <1g / L; barium molybdate precipitated with barium chloride solution containing Mo> 29%, residual Mo <0.03g / L. The total recovery of molybdenum can be greater than 70%.