电解锰生产用硫酸锰、镁、铵复盐体系结晶的研究  

Study on crystallization of manganese sulfate,magnesium sulfate and ammonium sulfate for electrolytic manganese production

作　　者：尤晓宇 王家伟[1,2,3] 王海峰 赵平源[1,2] YOU Xiao-yu;WANG Jia-wei;WANG Hai-feng;ZHAO Ping-yuan(College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China;Guizhou Provincial Key Laboratory of Metallurgical Engineering and Energy Saving,Guiyang 550025,China;Engineering Research Center of Manganese Material for Batteries,Tongren 554300,China)

机构地区：[1]贵州大学材料与冶金学院,贵州贵阳550025 [2]贵州省冶金工程与过程节能重点实验室,贵州贵阳550025 [3]电池用锰材料工程技术研究中心,贵州铜仁554300

出　　处：《应用化工》2021年第9期2353-2356,共4页Applied Chemical Industry

基　　金：国家自然科学基金(51764006,51864012);贵州省科学合作计划项目([2016]5302,[2017]5788,[2018]5781,[2019]1411,[2019]2841)。

摘　　要：在电解锰浸出液中,Mn ^(2+)、Mg ^(2+)、NH^(+)_(4)初始浓度分别为28,20,30 g/L时,研究结晶温度、蒸发瓶转速、结晶时间、有无晶种对复盐体系结晶的影响。结果表明,随着结晶温度的提高,锰、镁、铵结晶率呈快速上升趋势;随着转速和结晶时间的提高,锰、镁、铵结晶率整体呈缓慢上升趋势;相较无晶种添加,添加8%晶种时,可小幅提高体系结晶率。复盐体系锰、镁、铵结晶的最佳工艺条件为:结晶温度为55℃,转速为90 r/min,结晶时间为60 min,添加8%晶种,此时,复盐体系锰、镁、铵结晶率分别为68.05%,97.59%,94.81%,效果较好。In the electrolytic manganese leaching solution,when the initial concentration of Mn ^(2+),Mg ^(2+)and NH^(+)_(4) are 28,20,30 g/L respectively,the effects of crystallization temperature,rotation speed,crystallization time and the presence or absence of crystal seeds on the crystallization properties of double salt system were studied.The results showed that the crystallization rate of manganese,magnesium and ammonium increased rapidly with the increase of crystallization temperature.The crystallization rate of manganese,magnesium and ammonium rose slowly with the increase of rotating speed and crystallization time.Compared with no seed addition,the crystallization rate of the system was slightly increased by 8%seed addition.The optimum technological conditions for the crystallization of manganese,magnesium and ammonium in the double salt system were as follows:the crystallization temperature was 55℃,the rotation speed was 90 r/min,the crystallization time was 60 min,and 8%seed was added.At this time,the crystallization rates of manganese,magnesium and ammonium in the double salt system were 68.05%,97.59%and 94.81%,respectively,which showed good results.

关 键 词：电解锰 复盐体系 结晶条件 结晶率 

分 类 号：TQ110.7[化学工程—无机化工] TQ139.2