苦汁から硫酸カリの製造について (第4報):カーナリツトと苦汁カリ塩との複分解によるレオニツトの製造条件の図計算法について

概要

論文の詳細を見る
By using the equilibrium diagram of the oceanic salts, i.e. Na+-K+-Mg++-Cl--SO4=-H2O at 25°C, the double decomposition of 4 pairs of salts were graphically computed to get the best yield of the double salt leonite (MgSO4·K2SO4·4H2O): Namely (1) carnall te and NaCl-MgSO4-mixed-salt No.1,(2) carnallite and NaCl-MgSO4-mixed-salt No.2,(3) carnallite and glauber salt,(4) NaCl-MgSO4-mixed-salt No.2 and potassium chloride. At first, it was discussed that the best results must be obtained when the composition of mother liquor be the composition of the point W on the diagram. For computation, triangular axes was adopted as the most suitable for such purposes, and graduated with weight percentages and the diagram at 25°C was made, On this diagram, 6 points c, k1, k2, C, B and l were taken, representing carnallite, mixed salt No 1, mixed salt No 2, glauber salt, potssium chloride and leonite respectively, then, the best double-decomposition-mixture for carnallite and mixed salt No 1 must be m1 on the cross point of two streight lines ck1 and lW. On the same way, m2, m3 and m4 were found the other 3 pairs and from the position of these points on the digram, the amounts of raw salts and water to be taken, the compositions of the double-decomposition-mixtures, the amounts of NaCl, leonite and mother liquor to be obtained, were computed.
日本海水学会の論文