کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
213008 462076 2009 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Kinetics of copper dissolution during pressure oxidative leaching of lead-containing copper matte
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Kinetics of copper dissolution during pressure oxidative leaching of lead-containing copper matte
چکیده انگلیسی

The kinetics of pressure oxidative leaching of lead-containing copper matte with sulfuric acid was investigated. The effects of particle size, leaching temperature, oxygen partial pressure and sulfuric acid concentration on the kinetics and mechanism of copper extraction were studied. It was found that the reaction kinetic model follows the shrinking core model of chemical reaction control and the apparent activation energy was determined as 39.1 kJ/mol. The order of the reaction with respect to total pressure was found to be 0.64. The kinetic equations for the effect of particle size, leaching temperature, total pressure and sulfuric acid concentration were obtained and a mathematical model of copper extraction from lead-containing copper matte was developed as:a(%)=100×{1−[1−1r0exp(4.011−4635.541T+0.653lnP+0.023lnC)t]3}This equation estimates the extraction of copper with very good agreement (r = 0.99) between the experimental and calculated values.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Hydrometallurgy - Volume 99, Issues 1–2, October 2009, Pages 119–123
نویسندگان
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