用泻利盐矿和卤水制备硫酸镁工艺探究

Study on the Preparation of Magnesium Sulfate Heptahydrate by Using the Brine and Epsomite Mineral 

中文关键词:  兑卤  热溶  结晶  洗涤  硫酸镁

英文关键词::Mixing brine  Thermal dissolution  Crystallize  Clean  Magnesium sulfate heptahydrate封面图片:大柴旦盐湖 大柴旦盐湖位于柴达木盆地北部(N37°46’~55’,E95°02’~22’),总面积约235km²,属硫酸 盐型盐湖,以富含钾,锂,尤以蕴藏固体硼矿资源闻名于世。湖滨富硼矿体历经多年开发,湖 底柱硼镁石矿床全球罕见,成因问题倍受关注。大柴旦盐湖钾,锂等资源的开发利用刚刚开 始,前景广阔。近期钻取的湖底百米岩芯是研究西风带气候演变的重要环境档案。  (中国科学院青海盐湖研究所 余俊清)

中文摘要:

      以盐田泻利盐矿和卤水为原料,通过兑卤、热溶、结晶法制备硫酸镁。探究了各工艺因素对产物收率及纯度的影响,找到了较佳的工艺条件；在此基础上进行粗镁精制,得到纯度99%以上的硫酸镁。

英文摘要:

      :By mixing the brine and epsomite mineral from salt pan in proportion, heating the mixture,filtering the mixture, and freezing the filtrate obtained after filtering the mixture,magnesium sulfate heptahydrate is produced. By studying how the process impair the purity and yield of the product,the authors get some new process parameter. And then, the authors purify the crude product and gain a high purity magnesium sulfate heptahydrate with a purity more than 99%.