河北某难选钼矿石酸浸浸钼试验

河北某难选钼矿石氧化程度较高，氧化钼占总钼的52.54%，主要以钼华、钼钙矿和钼铅矿等形式存在；硫化钼矿物主要为非晶质或隐晶质胶硫钼矿，多以胶状集合体产出，单体解离困难，可浮性较差。为高效开发利用该钼矿资源，进行了酸浸工艺条件研究。结果表明，100 g粒度为-2 mm的试样中加入30 g浓硫酸，在液固比为1.5 mL/g、浸出温度为90 ℃、搅拌器转速为250 r/min情况下浸出3 h，钼浸出率达86.19%。因此，硫酸酸浸工艺是该资源的高效开发利用工艺。

Experiments on Molybdemm Acid Leaching of a Refractory Molybdemm Ore in Hebei

There is a refractory molybdenum ore in Hebei with high oxidation degree，and molybdenum oxide accounts for 52.54% of total molybdenum，and mainly exits in form of molybdite，powethite，wulfenite etc.; Molybdenum sulfide mineral is mainly amorphous or cryptocrystalline jordisite，and most exists in colloidal aggregates.With poor floatability，it belongs to refractory molybdenum ore.For the efficient development and utilization of the molybdenum resource，study on the process of acid leaching conditions was conducted.The results show that，under conditions of 30 g concentrated sulfuric acid added into 100 g samples with the particle size of 2～0 mm，liquid-solid ratio of 1.5 mL/g，mixing speed at 250 r/min，leaching temperature at 90 ℃ for 3 h，molybdenum extraction rate reached 86.19%.Therefore，sulfuric acid leaching is the efficient development and utilization process for the resources.