Modeling and Optimization of Charge Materials Ranges in Converter Furnace with Enhanced Passivation Time in Copper Electrorefining Process: A Mixture Design Approach
- سال انتشار: 1400
- محل انتشار: ماهنامه بین المللی مهندسی، دوره: 34، شماره: 4
- کد COI اختصاصی: JR_IJE-34-4_023
- زبان مقاله: انگلیسی
- تعداد مشاهده: 415
نویسندگان
Department of materials science and Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Department of materials science and Engineering, Shahid Bahonar University of Kerman, Kerman, Iran
Research & Development Center, Shahrebabak Copper Complex, National Iranian Copper Industries Company, Kerman, Iran
Senior metallurgical engineer, Process control unit, Khatoonabad copper refinery, Shahrebabak copper complex, National Iranian copper industries company, Kerman, Iran
چکیده
In this study, the design of experiments is used to study and model the time of passivation in copper electrorefining as a function of the charge of melting furnace through the preparation of copper casting anodes. As a result of optimization for the proposed optimized anodes, the charge percent values of concentrate (Co), refinery scrap (RS), and non-refinery scrap (NRS) were proposed equals to ۶۹.۱, ۰.۵۷۴ and ۳۰.۳۲ (wt.%), respectively. Experimental data confirmed the enhanced passivation time of the proposed anode was ۶۵۲۰ s. Also, it was observed that the molar ratio of As/(Bi+Sb) and Ag/(Se+Te) are the key factors in passivation time. Finally, the relation of passivation time (seconds) with the charge of melting furnace is proposed as: t (s)= - ۳۷۲۸.۹۸ × Co + ۴۶۴۰.۰۰ × RS + ۳۱۴۱.۰۰ × NRS + ۱۷۷۶۳.۲۷ × Co × RS + ۲۵۵۴۷.۶۵ × Co × NRS - ۱۷۵۸.۰۰ × RS × NRS. Moreover, adding of As ingot in casting anodes as a dose dependent of non-refinery scrap portion in the input charge of the melting unit can effectively prolong the time of passivation.کلیدواژه ها
Copper electrorefining, Passivation time, Casting anode, Design of experimentاطلاعات بیشتر در مورد COI
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