高碳镍钼矿催化氧化镍钼分离工艺条件

研究了高碳镍钼矿催化氧化分离的工艺方法，并对工艺条件进行了探讨.通过单因素实验确定了高碳镍钼矿镍、钼分离的最佳条件：当硫酸浓度为15%，软锰矿的过量系数为20%，液固比3∶1，反应时间6 h，反应温度95 ℃，催化剂C与镍的质量比为4.4时，镍的浸出率可达到95.84%，钼的浸出率仅3.74%，钼主要以钼酸的形式富集于渣中，实现了镍、钼的初步分离.

Catalytic Oxidation Separation of Nickel and Molybdenum in the High Carbon Nickel Molybdenum

The craft method of catalytic oxidation separation of high carbon nickel molybdenum was studied,and the craft condition was discussed.The best separation condition of nickel and molybdenum in the high-carbon Nickel molybdenum was identified by the single factor test：the sulfuric acid concentration was 15%,excess coefficient of pyrolusite was 20%,liquid-solid ratio was 1∶3,response time was 6 h,and reaction temperature was 95 ℃;when the mass ratio of catalyzer C and nickel is 4.4,the leaching rate could reach 95.84%,the leaching rate of molybdenum was only 3.74%,and the molybdenum mainly gathered in the residue in the form of molybdic acid.In such conditions,the preliminary separation of nickel and molybdenum was realized.