中南工业大学学报(自然科学版)2001，Vol.32Issue(2)：139-141,3.
Bi（Ⅲ）-X(Cl-,NO-3)-H2O体系热力学平衡研究
Thermodynamic equilibrium study of Bi（Ⅲ）-X(Cl-,NO-3)-H2O system
摘要
Abstract
In order to identify the pH ranges of the stabilization zone of each solid in Bi（Ⅲ）-X(Cl-,NO-3)-H2O system, the concentration balance principle and mass balance principle were applied to the thermodynamic analysis and calculation of Bi（Ⅲ）-X(Cl-,NO-3)-H2O system, based on which the diagrams of the logarithm of equilibrium concentration of series precipitation at 25 ℃ pH of Bi（Ⅲ）-X(Cl-,NO-3)-H2O system were drawn, and the stable existing regions were analyzed and studied. The results show that c0(Bi3+)，c0(Cl-), c0(NO-3) and pH were the important factors to the stabilization zone of each solid. From thermodynamic diagrams it could be seen that Bi2O3 can be obtained from the solution directly, and if we want to get highly purified BiOCl or BiONO3 the pH ranges must be controlled strictly. which provides an important theory basis for the process of the hydrometallurgy and hydrometallurgical production of chemical products of metal bismuth.关键词
Bi（Ⅲ）-X(Cl-,NO-3)-H2O体系/热力学平衡/Bi2O3/BiOCl/BiONO3分类
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王云燕,彭文杰,舒余德,秦毅红..Bi（Ⅲ）-X(Cl-,NO-3)-H2O体系热力学平衡研究[J].中南工业大学学报(自然科学版),2001,32(2):139-141,3.
