کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
204070 460696 2008 15 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Development of an MSE-based chemical model for the solubility of calcium sulphate in mixed chloride–sulphate solutions
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Development of an MSE-based chemical model for the solubility of calcium sulphate in mixed chloride–sulphate solutions
چکیده انگلیسی

A recently developed mixed-solvent electrolyte (MSE) model to describe the chemistry of calcium sulphate in aqueous multi-component sulphate solutions has been extended to complex mixed chloride–sulphate solutions. The model accurately represents the solubility of calcium sulphate solid phases, namely dihydrate, hemihydrate and anhydrite, in mixed chloride–sulphate solutions containing H2SO4, Fe2(SO4)3, HCl, NaCl, Na2SO4, MgCl2, MgSO4, CaCl2, etc., over a wide range of temperatures and ionic strengths. It predicted the solubility of calcium sulphate from 20 to 95 °C in simulated nickel processing solutions containing NiSO4, H2SO4, Fe2(SO4)3, Na2SO4 and LiCl. It was found that increasing Na2SO4 or LiCl concentrations in NiSO4–H2SO4 solutions do not have a significant effect on the calcium sulphate solubility. The model was shown to be a practical tool for assessing the scaling potential of calcium sulphate over a wide range of temperatures and concentrations where experimental data are not available.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fluid Phase Equilibria - Volume 266, Issues 1–2, 25 April 2008, Pages 172–186
نویسندگان
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