A purification process of wet-process phosphoric acid, which is used for the production of toothpaste-grade calcium hydrogen phosphate, was studied.
以湿法磷酸为原料制取牙膏级磷酸氢钙的关键在于解决湿法磷酸的净化与脱氟问题。
Using paraffin amine as dissolvent and kerosene as diluent for the purification and defluorination of wet process phosphoric acid by solvent extraction was studied.
为对湿法磷酸进行净化脱氟 ，用胺类溶剂作萃取剂 ，煤油作稀释剂 ，对湿法磷酸进行了溶剂萃取脱氟的工艺研究。
Six, in phosphoric acid purification, help wet-process phosphoric acid process gypsum separation. 7, used for water in rivers of water works water treatment flocculant.
在磷酸提纯中， 有助于湿法磷酸工艺中石膏的分离。 7、用于以江河水源的自来水厂的水处理絮凝剂。
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