The Ternary System Phase Equilibrium of KCl-NH₄Cl-H₂O at 80°C

Abstract:

The ternary system of solid-liquid phase equilibrium relation of KCl-NH₄Cl-H₂O was studied at 80 °C. The solubility data of KCl and NH₄Cl in water were obtained by isothermal equilibrium method, and the phase diagram of the system was plotted. The result showed that this system exist six phase regions: i.e. the unsaturated solution region, pure KCl , pure NH₄Cl, the solid solution base of KCl, the solid solution base of NH₄Cl and their common crystallization region with the solid solution base of KCl and the solid solution base of NH₄Cl crystallization regions. Some crystallization area will be changed with the various temperature, According to the phase diagram, it can be calculated the quantity of evaporated water in the crystallization process of KCl-NH₄Cl-H₂O and controlled the change of concentration in the evaporation process preferably.

• Periodical: Advanced Materials Research (Volumes 834-836)
• Pages: 519-522
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.834-836.519
• Online since: October 2013
• Authors: Bin Zhao, Guo Yue Geng, Jian Xin Chen*, Shao Feng Zhang, Yin Hui Li, Ai Dang Lu
• Keywords: Ammonium Chloride, Phase Diagram, Phase Equilibrium, Potassium Chloride

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