摘要
以低冰镍为研究对象,采用FeCl_3-HCl溶液体系高效浸提目标金属Ni、Cu、Co,系统地研究FeCl_3溶液的浓度、盐酸溶液的浓度、浸出温度和时间对Ni、Cu、Co浸出率的影响,并对Ni的浸出动力学进行探讨。结果表明:在最优浸出条件下,即FeCl_3溶液的浓度为1.0 mol/L、盐酸溶液的浓度为0.5 mol/L、浸出温度90℃、浸出时间7 h时,Ni、Cu、Co浸出率分别达到98.4%、98.9%和97.3%。当温度为60~90℃时,Ni的浸出反应符合未反应核收缩模型,代入动力学方程分析后发现,Ni浸出反应过程是界面化学反应控速,表观活化能为38.4kJ/mol。
The extraction of Ni, Cu and Co with high leaching efficiencies from the low nickel matte in FeCl_3-HCl solution was investigated. The effects of FeCl_3 concentration, hydrochloric acid concentration, leaching temperature and time on the leaching rates of Ni, Cu and Co were systematically investigated. The results show that leaching rates of Ni, Cu and Co are 98.4%, 98.9% and 97.3%, respectively, under the optimal conditions(FeCl_3 concentration: 1.0 mol/L, hydrochloric acid concentration: 0.5 mol/L, leaching temperature: 90 ℃, leaching time: 7 h). The leaching process follows the shrink-core model at the temperature of 60~90 ℃ and through kinetic analysis, the leaching efficiency of Ni is controlled by the interface chemical reaction, and the apparent activation energy is 38.4 kJ/mol.
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2017年第9期1936-1942,共7页
The Chinese Journal of Nonferrous Metals
基金
国家重点基础研究发展计划资助项目(2014CB643401
2013AA032003)
国家自然科学基金资助项目(51372019)~~
