【摘要】 １前言硫酸钾是一种重要的无氨钾肥，其生产方法有直接提取法和转化法。由氨化钾和硫酸铵复分解生产硫酸钾是转化法一种，该法所依赖的理论基础是Ｋ＋，ＮＨ４＋‖Ｃｌ，ＳＯ４２Ｈ２Ｏ水盐体系的溶解度数据。虽然文献［１－４］上已有有关溶解度数据的报导，但还不很...更多还原

【Abstract】 The solubility data of the reciprocal saltpair 2KCl+(NH4)2SO4=K2SO4+2NH4Cl at 40 in water and in water saturated with ammonia at atmosphere pressure were studied and according to which, the solubility diagrams, water index diagrams and ammonia index diagram can then be drawed respectively There were three regions of crystallization in each system: (K,NH4)2SO4, (K,NH4)Cl and (NH4,K)Cl, and the crystallization region of (K,NH4)2SO4 was the largest one In the presence of ammonia the area of (K,NH4)2SO4 crystllization region was obviously increased, it showed that ammonia was obvious in saltingout of (K,NH4)2SO4 solid solution from liquid phase更多还原