低品位铜钴矿选择性浸出工艺研究

Selective Leaching Process of Low-grade Copper-Cobalt Ore

随着铜钴矿物的不断开采,高品位、易处理铜钴矿资源的日益减少,低品位铜钴矿的开发利用越来越受到重视.低品位铜钴矿中有较多杂质金属离子,为了提高有价金属浸出率的同时抑制杂质金属离子的浸出,实验探讨温度、酸量、固液比、反应时间等因素对各金属离子浸出率的影响.最佳浸出工艺为:以盐酸为浸出液,盐酸总酸量为理论量的1倍,矿物粒度100目,固液比为S/L=1∶4,浸出时间为1 h,温度30℃.

With the exploitation of Copper-Cobalt minerals,the Copper-Cobalt ore resources of high quality and easy processing have been declining. Developing low-grade Copper-Cobalt ore is payed more attention. However ,the low-grade Copper-Cobalt ore contains impurity metal ions. In order to improve the leaching of valuable metals and suppress the leaching of impurity metal ions,the experiments of the temperature,the amount of acid,solid-liquid ratio,reaction time were explored. The optimal conditions are as follows：the leaching solution is hydrochloric acid,the total amount of hydrochloric acid is one times of the theoretical amount,mineral particle size is 100 mesh,solid-liquid ratio of S/L is 1∶4,the leaching time is one hour,and the leaching temperature is 30℃.