【摘要】 通过实验研究确立了溶剂萃取法制备硝酸钾的新的工艺流程，并优化了操作条件。在所确定的主要条件下，用溶剂Ⅰ、Ⅱ进行低温萃取，可得到氯含量较低的农用硝酸钾产品，经精制可得工业用产品。更多还原

【Abstract】 New process for the preparation of agriculture grade potassium nitrate by solvent extraction method is established and the optimum conditions are also obtained.Under low temperature extration with solvent Ⅰ and Ⅱ,the agriculture grade potassicum nitrate with low chlorine content can be got,and industrial grade product can be got after purification.更多还原