中文摘要：

采用等温溶解平衡法测定了298 K时,KCl-K2CO3-H2O三元水盐体系的固液相平衡关系,测定了平衡液相的溶解度和密度,并绘制了相图。结果表明该体系在298 K时的相图都存在6个区域,即：纯KCl结晶区;纯K2CO3结晶区;以KCl为主的固溶体结晶区,以K2CO3为主的固溶体结晶区;以KCl为主的固溶体和以K2CO3为主的固溶体的共结晶区;不饱和溶液区。

英文摘要：

Solubilities in the ternary system KCI-K2CO3-H20 at 298 K was investigated by means of moist solid method, the density data of the saturated sohaion were measured. The solubility data of KCI and K2CO3 in water were obtained, and the phase diagram of the system was drawn. The result showed that there were six phase regions in this system, i.e.unsaturated solution region, KCI pure phase region, K2CO3 pure phase region, KCI dominant mixed crystalline region, K2CO3 dominant mixed crystalline region, co-crystalline region of KCI dominant sosoloid and K2CO3 dominant sosoloid.