An improved model of continuous leaching systems using segregation approach
- سال انتشار: 1399
- محل انتشار: مجله بین المللی معدن و مهندسی زمین، دوره: 54، شماره: 2
- کد COI اختصاصی: JR_IJMGE-54-2_006
- زبان مقاله: انگلیسی
- تعداد مشاهده: 556
نویسندگان
Department of Mining and Metallurgical Engineering, University of Yazd, Yazd, Iran;
Department of Mining and Metallurgical Engineering, University of Yazd, Yazd, Iran;
Department of Mining Engineering, Tarbiat Modares University, Tehran, Iran
Department of Mining and Metallurgical Engineering, University of Yazd, Yazd, Iran;
چکیده
In this study, a simplified dissolution model has been developed to evaluate the performance of continuous leaching reactors. The model considers continuous reduction of the surface area of particles using the distribution of their size and residence time. The model was validated by the bioleaching of a pyrite-arsenopyrite concentrate in the pilot plant scale, which resulted in good agreement between the experimental data and the predicted values. The developed model was also used to predict the outlet mass density function of particles, whose results showed that the mean particle size would not necessarily decrease as the mean residence time in the leaching process decreased. Using this model, the effect of operating parameters (e.g., particle size distribution, inlet flow, reagent concentration, kinetic parameters, and the type of residence time distribution) on the reactor performance can be predicted. Therefore, the model can be used for dynamic and static analyses of leaching circuits as well as designing and optimizing the processing plants.کلیدواژه ها
Continuous leaching, Dissolution modelling, Particle size, Residence Timeاطلاعات بیشتر در مورد COI
COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.
کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.