【摘要】 为了研究氧化锌矿氯化浸出液盐类溶解规律,文中采用等温溶解平衡法进行了323 K时三元体系KCl-ZnCl₂-H₂O的稳定相平衡研究,并采用X射线粉晶衍射法和湿固相法对平衡固相的成分进行了鉴定,还对不同温度下该体系的溶解度进行了对比分析。研究发现KCl-ZnCl₂-H₂O相平衡体系有复盐生成,为复杂三元体系,该体系相图中有2个共饱点,3条溶解度曲线,3个固相结晶区（分别对应了KCl,2KCl·ZnCl₂和ZnCl₂）。由溶解度数据和相图发现,氯化锌对氯化钾有明显的增溶效应。当氯化钾溶解度逐渐增大达最大值,再加入氯化锌,氯化钾的溶解度又开始降低并生成化学式为2KCl·ZnCl₂的复盐。更多还原

【Abstract】 In order to study the dissolution of leaching salts of zinc oxide ore, the stable phase equilibrium of the ternary system KCl-ZnCl₂-H₂O at 323 K was studied by means of isothermal dissolution equilibrium method. The equilibrium solid phase was identified by X-ray powder diffraction and wet solid phase method, and the solubility data of this ternary system at 323 K were compared and discussed at different temperatures. The results indicate that the ternary system has the formation of complex salts, which is a complex ternary system. The ternary system at 323 K has two invariant points, three univariant curves and three crystallization fields（corresponding to KCl, 2 KCl·ZnCl₂ and ZnCl₂, respectively）. It is found from the solubility data and phase diagram that zinc chloride has an obvious solubilizing effect on potassium chloride. When the solubility of potassium chloride gradually increases to a maximum, the solubility of potassium chloride begins to decrease again after adding zinc chloride, and the compound salt of chemical formula 2 KCl·ZnCl₂ is formed.更多还原