硫酸锰溶液结晶分离硫酸镁的水系相图原理  

Study on the removing of MgSO_4 from MnSO_4 solution based on the aqueous system phase diagram

作　　者：袁明亮[1] 邱冠周[1] 

机构地区：[1]中南工业大学矿物工程系,湖南长沙410083

出　　处：《中南工业大学学报》2000年第3期212-214,共3页Journal of Central South University of Technology(Natural Science)

基　　金：国家自然科学基金资助项目! ( 5990 4 0 0 7)

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%The possibility of separation of MgSO 4 from MnSO 4 solution based on the aqueous system phase diagram is discussed in this paper. The results show that it is impossible to separate MgSO 4 from MgSO 4 solution by using conventional crystallization method. Then the possible technology of crystallization separation method is dicussed. MnSO 4 can be separated from MgSO 4 in this way: controlling the water evaporating volume, separating MnSO 4 or MgSO 4 at 50 ℃ or 90 ℃ respectively. The loss rates of MnSO 4 are 5% and 5% to 7% separately.

关 键 词：结晶 相图 硫酸锰 硫酸镁 分离 水系 

分 类 号：TF822.032[冶金工程—有色金属冶金]