硫酸盐型盐湖盐田泻利盐矿硫酸镁浸取结晶工艺条件研究  

Study on the Leaching and Crystallization Conditions of Magnesium Sulfate Leaching from EPS Mine of Sulfate Salt Lake

作　　者：侯殿保[1,2] 杨海云 陈育刚[1,2] 李海民 HOU Dian-bao;YANG Hai-yun;CHEN Yu-gang;LI Hai-min(Key Laboratory of Comprehensive and Highly Efficient Utilization of Salt Lake Resources,Qinghai Institute of Salt Lakes,Chinese Academy of Sciences,Xining,810008,China;Qinghai Engineering and Technology Research Center of Comprehensive Utilization of Salt Lake Resources,Xining,810008,China)

机构地区：[1]中国科学院青海盐湖研究所,中国科学院盐湖资源综合高效利用重点实验室,青海西宁810008 [2]青海省盐湖资源综合利用工程技术中心,青海西宁810008

出　　处：《盐湖研究》2020年第2期71-78,共8页Journal of Salt Lake Research

摘　　要：本研究利用盐田高硫酸镁混盐矿—泻利盐矿和提钾老卤为原料,通过中温溶浸、冷却结晶的方法制取工业级硫酸镁。盐田高硫酸镁混盐矿热溶浸取最佳配矿条件,泻利盐矿:提钾老卤:淡水=1∶1.8∶0.8,溶浸温度(55±5)℃,溶浸时间1~2 h;将热滤液分别进行自然蒸发和冷冻结晶处理,得到的粗品经水洗均可达到工业级硫酸镁产品标准,采用冷冻结晶法收率较高,达到80.25%。This study use the salt tailings and bittern as raw material,through temperature leaching cooling crystallization method for preparing industrial grade magnesium sulfate.The optimum conditions of hot melt extraction mine is:brine:Freshwater=1∶1.8∶0.8,solution leaching temperature is(55±5)℃,leaching time is 1~2 hours;The hot filtrate was treated by natural evaporation and freeze crystallization respectively,the crude product can reach the standard of industrial grade magnesium sulfate after washing,and the yield can reach 80.25%by freezing crystallization.

关 键 词：老卤 七水硫酸镁 溶浸 冷却结晶 

分 类 号：TS38[轻工技术与工程]