Sodaash and caustic soda are basic raw material in chemical industry. Existence of sulfate in brine has great impact on the production of soda and refined salt.
烧碱和纯碱是基本化工原料， 盐卤中硫酸根的存在严重影响这两种碱及精制盐的生产。
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The technic of kai film brine refined is a new technology, which is based on combining the successful experience of salt water refined in chlor-alkali and sodaash industry.