复合溶剂萃取净化湿法磷酸

通过实验确定了复合溶剂中溶剂A和溶剂B的配比,以及萃取、洗涤、反萃段的相比以及各段的理论级数。实验结果表明,采用该工艺可以得到优于工业湿法净化磷酸标准的产品。磷酸萃取率大于75%,净化磷酸收率大于70%。

Purification of Wet Process phosphoric Acid by Compounded Solvent

The ratio of solvent A and solvent B in compound solvents was determined by experiment, and the phase ratio and the theoretical stage of extraction, washing, stripping were determined. The experimental results show that the product can be better than the industrial wet purification phosphoric acid standard by this process. Phosphoric acid extraction rate is greater than 75%, purification phosphoric acid yield is greater than 70%.