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›› 2005, Vol. 5 ›› Issue (5): 525-528.

• 过程与工艺 • 上一篇    下一篇

The Applicability of Debye-Hückel Model in NaAl(OH)4-NaOH-H2O System

李小斌,吕卫君,冯港涛,刘桂华,彭志宏,周秋生,孟芸   

  1. 中南大学冶金科学与工程学院
  • 出版日期:2005-10-20 发布日期:2005-10-20

The Applicability of Debye-Hückel Model in NaAl(OH)4-NaOH-H2O System

LI Xiao-bin,WU Wei-jun,FENG Gang-tao,LIU Gui-hua,PENG Zhi-hong,ZHOU Qiu-sheng,MENG Yun   

  1. School of Metallurgical Science and Engineering, Central South University School of Metallurgical Science and Engineering, Central South University School of Metallurgical Science and Engineering,
  • Online:2005-10-20 Published:2005-10-20

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摘要： Focusing on the most important NaAl(OH)4-NaOH-H2O system in the industry of alumina production, the feasibility of establishing a calculation model of activity coefficients according to Debye-Hückel theory via the equilibrium solubility data of sodium aluminate solution is discussed in this paper. Firstly, the hypotheses for applying Debye-Hückel theory into NaAl(OH)4-NaOH-H2O system are involved and the values of parameters are determined. Then the applicability of Debye-Hückel model in NaAl(OH)4-NaOH-H2O system is testified. The results indicate that Debye-Hückel model is applicable to the establishment of calculation model of activity coefficients in NaAl(OH)4-NaOH-H2O system and the value of ?NaAl(OH)4 is estimated as 0.3595 nm.

关键词: activity coefficients, Debye-Hückel theory, sodium aluminate solution, applicability

Abstract: Focusing on the most important NaAl(OH)4-NaOH-H2O system in the industry of alumina production, the feasibility of establishing a calculation model of activity coefficients according to Debye-Hückel theory via the equilibrium solubility data of sodium aluminate solution is discussed in this paper. Firstly, the hypotheses for applying Debye-Hückel theory into NaAl(OH)4-NaOH-H2O system are involved and the values of parameters are determined. Then the applicability of Debye-Hückel model in NaAl(OH)4-NaOH-H2O system is testified. The results indicate that Debye-Hückel model is applicable to the establishment of calculation model of activity coefficients in NaAl(OH)4-NaOH-H2O system and the value of ?NaAl(OH)4 is estimated as 0.3595 nm.

Key words: activity coefficients, Debye-Hückel theory, sodium aluminate solution, applicability