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

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。

By mixing the brine and epsomite mineral from salt pan in proportion, heating the mixture, fil-tering the mixture, and freezing the filtrate obtained after filtering the mixture, magnesium sulfate hepta- hydrate 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 heptahydratc with a purity more than 99%.