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Production of Potassium Phosphate by a Conversion Method
Fibre Chemistry ( IF 0.5 ) Pub Date : 2020-11-27 , DOI: 10.1007/s10692-020-10170-1
K. S. Kirish , P. P. Vlasov , B. A. Dmitrevskii

A conversion method using a closed cycle for production of potassium dihydrogen phosphate from available feedstock, i.e., hot-leached potassium chloride (98%) or its mixture with sodium chloride, purified extraction phosphoric acid, and technical sodium carbonate (bicarbonate), with separate addition of the reagents is reported. Solubility diagrams of the KCl–NaH2PO4–NaCl–KH2PO4–H2O system with joint and separate addition of the starting reagents are calculated. A product of higher quality with lower chloride content is shown to be produced in the second instance. The calculations are confirmed by laboratory experiments.



中文翻译:

转化法生产磷酸钾

一种使用密闭循环的转化方法,用于从可用的原料(即热浸的氯化钾(98%)或其与氯化钠的混合物,提纯的磷酸和工业碳酸钠(碳酸氢盐)中)生产磷酸二氢钾报告了试剂的添加。计算了KCl–NaH 2 PO 4 –NaCl–KH 2 PO 4 – H 2 O系统(分别添加和分开添加起始试剂)的溶解度图。在第二种情况下显示出生产出具有较低氯化物含量的高质量产品。计算结果通过实验室实验得到证实。

更新日期:2020-11-27
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