硫化矿中铜镍的浸取研究

STUDY ON LEACHING TECHNOLOGY OF Cu AND Ni FROM BRASSIL

采用三氯化铁作为浸取剂，在盐酸介质中对硫化矿中铜镍的浸取进行了研究，最佳的浸出条件为三氯化铁１２０ｇ／Ｌ、盐酸２ｍｏｌ／Ｌ、温度９５～９８℃、时间８ｈ及矿样粒度小于０．０４４ｍｍ。在此条件下，铜镍的浸出率分别达到９８．９３％和９１．０７％。并对残渣进行了成分分析，发现未被浸出的矿物多为硅酸盐矿物，因此可以说该方法对硫化矿中铜镍的浸出比较完全。

Critical conditions for leaching Cu and Ni from brassil were studied using FeCl 3 HCl as leaching agent. The optimum conditions are: FeCl 3(120 g/L), HCl(2 mol/L), temperature (95￣98℃), time (8 hours) and sample size (<0.044 mm). Under such conditions, the leaching ratios of Cu and Ni reached 98.93% and 91.07%, respectively. Most of the minerals in the residues were silicates. Therefore, the leaching of Cu and Ni could be completed for brassils.