卤水提取氢氧化镁过程中脱硫工艺及硫酸钙产品化的研究

Reserch on the Desulfulrization Technique of Producing Magnesium Hydroxide with Brine and the Quality of Calcium Sulphate

文章对利用卤水提取氢氧化镁过程中的脱硫工艺进行了研究,对影响脱硫效果的各种因素进行单因素实验,并在分析单因素实验各种影响因素的基础上通过正交试验得出适宜的操作条件,达到很好的实验效果,同时对脱硫工艺的副产品硫酸钙的产品化进行了实验,得到纯度和白度都明显提高的副产品石膏。本工艺不仅实现对氢氧化镁母液的充分利用,同时对制盐及苦卤综合利用,特别是氯化钾的提取,创造了有利条件。

The paper covers the research on the desulfurization technique in the production of magnesium hydroxide using brine as raw material. Based on the analysis of the various factors, whose effects are separately analyzed in several single -factor experiments , an orthogonal experiment is conducted in order to get a proper set of operating parameters, and the results turns out to be ideal. Meanwhile, some experiments also has been done on improvements of the quality of calcium sulphate dihydrate, the outcome reveals that both the purity and brightness has improved quite a lot. The technique adopted here not only realizes the full utilization of the mother liquor of magnesium hydroxide, but also provides favorable conditions to the comprehensive utilization of sea water and brine, especially for the extraction of potassium chloride.