结晶法生产液体低锶氯化钡

比较了氯化钡的各种生产方法，提出了以毒重石、盐酸和工业精制盐为原料，结晶法生产液体低锶氯化钡新工艺，并对酸化反应、锶钡分离原理、饱和盐水洗涤及母液处理进行了分析和讨论。实验结果表明，母液循环利用后，氯化钡总收率可达92．5％，氯化钡中锶质量分数为0．016％，产品质量完全满足氯碱企业盐水精制低锶要求，节省了运行费用。该工艺与现有工艺相比，简单易行，生产成本低，投资少，省去了高温焙烧、蒸发、热结晶等工序。

Production of liquid barium chloride with low strontium by crystallization method

In this paper, various production methods of barium chloride were compared. A new production technology, using witherite,hydrochloric acid and industrial refined salt as raw materials, to produce liquid barium chloride with low strontium by crystallization method was put forward. Meanwhile lanalysis and discussion were made on the acidizing reaction, separation principle of strontium and barium, saturated brine washing and mother liquid treatment. The experimental resuits showed after the mother liquid being reused clrcularly,the overall yield of barium chloride can reach 92.5% and the mass fraction of strontium in the barium chloride was 0. 016%. The product quality can totally satisfy the requirement of chlor - alkali enterprises on low impurity of strontium. Their operating cost can be saved accordingly. Comparing the existing technology, the new technology is easy to implement, low in production cost, less on investment and more than that it also save some procedures, such as high temperature calcination, evaporation and thermal crystallization etc..