Development of a Chemical Model for the Solubility of Calcium Sulphate in Zinc Processing Solutions

被引：0

作者：

Azimi, G. ^{[1
]}

Papangelakis, V. G. ^{[1
]}

Dutrizac, J. E. ^{[2
]}

机构：

[1] Univ Toronto, Toronto, ON M5S 3E5, Canada

[2] CANMET MMSL, Ottawa, ON K1A 0G1, Canada

来源：

CANADIAN METALLURGICAL QUARTERLY | 2010年 / 49卷 / 01期

关键词：

calcium sulphate; gypsum; anhydrite; chemical modelling; Solubility; zinc hydrometallurgy; SOLVENT ELECTROLYTE SYSTEMS; SULFURIC-ACID-SOLUTIONS; AQUEOUS-SOLUTIONS; PHASE-EQUILIBRIA; SPECIATION; MULTICOMPONENT; 100-DEGREES-C; GYPSUM;

D O I：

暂无

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

A new model capable of predicting the Solubility of calcium sulphate solid phases in zinc sulphate processing solutions from 25 to 95 degrees C vas developed. The model uses the Mixed Solvent Electrolyte (MSE) model of the OLI systems software to calculate the activity coefficients of the electrolyte species. The model vas tested using recently developed experimental measurements. It vas shown to accurately predict the solubility behaviour of calcium sulphate in multi-component zinc processing solutions containing ZnSO(4), H(2)SO(4), MgSO(4) MuSO(4), Fe(2)(SO(4))(3),. NaSO(4) and (NH(4))(2)SO(4). The model can also explain the complex effiect of coexisting metal sulphates oil the Solubility of the CaSO(4) phases. The model is a practical tool for assessing the process chemistry of a wide variety of complex aqueous processing streams.

引用

页码：1 / 8

页数：8

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