硫酸锰溶液结晶分离硫酸镁的水系相图原理

来源期刊：中南大学学报(自然科学版)2000年第3期

论文作者：袁明亮 邱冠周

文章页码：212 - 214

关键词：结晶;相图;硫酸锰;硫酸镁;分离

Key words：crystallization; phase diagram; MnSO₄; MgSO₄; separation

摘    要：从水系相图原理讨论了从硫酸锰溶液中结晶分离镁杂质工艺的可行性.研究结果表明,采用常规的工艺结晶分离硫酸锰和硫酸镁是不可行的.并由此探讨了结晶分离法的可能途径:控制结晶过程水分蒸发量,在50℃和90℃时分别结晶析出纯硫酸锰或硫酸锰与硫酸镁的混晶,从而实现硫酸锰和硫酸镁的分离,该过程硫酸锰的损失率分别为5%和5%~7%.

Abstract: The possibility of separation of MgSO₄ from MnSO₄ solution based on the aqueous system phase diagram is discussed in this paper. The results showthat it is impossible to separate MgSO₄ from MgSO₄ solution by using conventional crystallizationmethod. Then the possible technologyof crystallization-separationmethod is dicussed. MnSO₄ can be separated from MgSO₄ in this way: controlling the water evaporating volume, separating MnSO₄ or MgSO₄ at 50℃or 90 ℃respectively. The loss rates of MnSO₄ are 5% and 5% to 7% separately.