Investigating the Leaching Behavior of Copper from Chalcopyrite Concentrate in H۲SO۴/CuCl۲ Media
محل انتشار: مجله علم مواد و مهندسی ایران، دوره: 17، شماره: 2
سال انتشار: 1399
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 140
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شناسه ملی سند علمی:
JR_IJMSEI-17-2_003
تاریخ نمایه سازی: 1 اسفند 1401
چکیده مقاله:
Present paper investigates the dissolution behavior of copper from chalcopyrite concentrate sample using cupric chloride solution in detail. Response surface modeling (RSM) in combination with d-optimal design (DOD) was utilized for modeling and optimizing the cupric chloride leaching process. At first, a quadratic polynomial model was developed for the relationship between the recovery of copper and influential factors. The predictions indicated an excellent agreement with the experimental data (with R۲ of ۰.۹۳۹۹). Then, the effects of main factors including pH (۱-۴), liquid/solid ratio (۲-۷ mL/g), temperature (۷۰-۹۰ °C), CuCl۲ concentration (۶-۳۵ g/L), and leaching time (۰.۵-۱۶) were determined. The findings demonstrated that the temperature and CuCl۲ concentration were the most effective factors on the dissolution rate of copper from chalcopyrite sample, while liquid/solid ratio had the lowest impact. The recovery of copper increased linearly with an increment in the liquid/solid ratio and the decrease in the pulp pH. Additionally, the recovery enhanced by increasing the temperature and CuCl۲ concentration owing the generation of Cu–Cl complexes species and reached a plateau point and then almost remained unchanged. Meanwhile, it was found out that the recovery of copper was independent of the interaction between factors. Moreover, the optimization of leaching process was carried out by Design Expert (version ۷) software and desirability function method and the highest recovery of copper was found to be about ۸۶.۱% at a pH of ~۱.۴, temperature of ۸۹ °C, liquid/solid ratio of ۶.۸ mL/g, CuCl۲ concentration of ۲۱.۷۹ g/L and leaching time of ~۸ h.
کلیدواژه ها:
نویسندگان
R. Katal
Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran
A. Azizi
Faculty of Mining, Petroleum and Geophysics, Shahrood University of Technology, Shahrood, Iran
M. Gharabaghi
School of Mining Engineering, College of Engineering, University of Tehran, Tehran, Iran
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