THE MGCL2-KCL-CACL2 PHASE-DIAGRAM

The MgCl2-KCl-CaCl2 phase diagram has been determined using the method of thermal analysis. The liquidus system is a simple one with two eut ectics at MgCl2 (48 mol.%)-KCl (40 mol.%)-CaCl2 (12 mol.%), m.p. 722 K ; and MgCl2 (35 mol.%)-KCl (63 mol.%)-CaCl2 (2 mol.%), m.p. 700-725 K. There is a peritectic at MgCl2 (47 mol.%)-KCl (35 mol.%)-CaCl2 (18 mo l.%), m.p. 725-750 K; the second peritectic near the compound K2MgCl4, was not found experimentally. There were no ternary compounds found a nd the diagram agrees very well with an earlier Russian determination.