کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
144753 438946 2010 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Scale-up methodology for tumbling ball mill based on impact energy of grinding balls using discrete element analysis
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Scale-up methodology for tumbling ball mill based on impact energy of grinding balls using discrete element analysis
چکیده انگلیسی

This paper provides a method to scale-up horizontal tumbling ball mills, i.e. to determine the dimensions of the rotating drum and the drum rotational speed. In order to develop the scale-up methodology, the motion of grinding balls in tumbling ball mills with different drum diameters was calculated using the discrete element method (DEM). The impact energy of grinding balls was numerically analyzed, and the influence of drum dimensions and drum rotational speed on the impact energy was investigated. It was found that scale-up of the rotating drum should be carried out based on the mechanical energy instantaneously applied to the powder and its cumulative amount. The former was evaluated in terms of the frequency distribution of the impact energy and the latter its cumulative amount over the elapsed milling time, which could be controlled by the drum rotational speed and the milling time, respectively. Validity of the proposed scale-up methodology was evaluated through dry grinding experiments of aluminum hydroxide powder, and the experimental results supported its usefulness in practical applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Advanced Powder Technology - Volume 21, Issue 6, November 2010, Pages 623–629
نویسندگان
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