کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
233475 465345 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Correlation of air recovery with froth stability and separation efficiency in coal flotation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Correlation of air recovery with froth stability and separation efficiency in coal flotation
چکیده انگلیسی

Recent research progress in hard rock mineral flotation shows that froth stability can be represented by air recovery, which is defined as the fraction of air entering a flotation cell that overflows the weir in unburst bubbles, and that air recovery has strong correlation with the separation performance of mineral flotation. Yet no experimental work on air recovery has been devoted to coal flotation. This paper studies air recovery in coal flotation and examines the links between air recovery, froth stability and coal flotation performance. A series of experiments were conducted using a laboratory-scale mechanical flotation cell at various methyl isobutyl carbinol (MIBC) concentrations and aeration rates. It was found that air recovery has a strong correlation with dynamic froth stability determined by measuring the maximum froth height in a non-overflowing froth column. At a fixed aeration rate (hydrodynamic condition) and various MIBC concentrations, a strong correlation between air recovery and coal flotation performance was also observed.

Figure optionsDownload as PowerPoint slideHighlights
► We studied air recovery of coal flotation as a function of MIBC concentration and aeration rate.
► Air recovery was strongly correlated with dynamic froth stability.
► The correlation between air recovery and coal flotation performance holds under certain circumstances.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Minerals Engineering - Volume 41, February 2013, Pages 25–30
نویسندگان
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