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本文测定了ＭｇＣ１＿２＿ＫＣ１＿Ｈ＿２Ｏ体系２８℃和３０℃时的相图，结合文献中该体系的溶解度曲线，提出从盐卤提取的复盐ＫＣ１·ＭｇＣ１＿２·６Ｈ＿２Ｏ中分离ＫＣ１的简便方法．
In this paper, the phase diagram of MgC1_2_KC1_H2O system at 28 ℃ and 30 ℃ was measured. According to the solubility curve in the literature, a simple and convenient method for separating KC1 from the double salt KC1 · MgC1_2 · 6H_2O was proposed.