کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7043786 1456919 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of off-centered silicon ladle on the removal strength of aluminum and calcium impurities
ترجمه فارسی عنوان
اثر غلظت سیلیکون غلیظ شده بر مقاومت بر روی آلومینیوم و ناخالصی های کلسیم
کلمات کلیدی
متالورژی ملافه، مدل ریاضی، جریان دو مرحله ای، حذف آلومینیوم و کلسیم، ترکیب همگن،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
چکیده انگلیسی
The bottom blowing gas in the silicon ladle plays an essential role in the purification of industrial silicon, and nozzle arrangement has an important effect on silicon quality after refinement. In the present study, a mathematical model has been proposed to assess the transient three-dimensional and two-phase flow in rich oxygen bottom-blowing silicon ladle with a single centered and off-centered porous nozzle, respectively. The numerical simulation is performed with the multiphase flow model of volume of fluid to model gas blown through a ladle. Fluid flow characteristics and the dead zone proportion between the centered and off-centered ladle are compared. The results demonstrate that the flow performance of liquid-silicon is better, agitation kinetics are more robust, and the dead zone area is smaller in bottom blowing of the off-centered ladle than of the centered ladle, which aligns well with the results of industrial experiments. The amount of Al and Ca impurities in silicon decreases by 13.22% and 25.87%, respectively, and the impurity distribution is more uniform.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Separation and Purification Technology - Volume 201, 7 August 2018, Pages 301-308
نویسندگان
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