电解浸出软锰矿的研究

Study on Electrolytic Leaching of Pyrolusite

采用电解法浸出软锰矿,考察硫酸铁用量、硫酸用量、浸出时间、电流密度、液固比、反应温度和搅拌速率对锰浸出率的影响。结果表明,在铁锰物质的量之比为1:2,硫酸物质的量浓度为0.1 mol/L,浸出时间为2 h,电流密度为400 A/m2,液固比为7:1,反应温度为80℃,搅拌速率为300 r/min的优化工艺条件下,锰的浸出率达95%以上。

By using the method of electrolysis, an extraction of pyrolusite can be achieved, followed by an investigation of the effects of the amount of ferric sulfate, amount of sulfuric acid, leaching time, current density, ratio of liquid and solid, temperature and stirring rate on the leaching rate. With the mole ratio of ferrous sulfate to pyrolusite being 1:2, the concentration of sulfuric acid being 0.1 mol/L, the leaching time being 2 h, the current density being 400 A/m2, the liquid-solid ratio being 7:1, the temperature being 80 ℃, and the stirring rate being 300 r/min, the leaching rate of manganese reaches above 95% under these optimum conditions.