In order to solve the problem of difficulty in ensuring the yield and quality of clean coal in actual sorting operations for high ash and high mud coal slime,based on a detailed analysis of the current flotation process status and existing problems in coal preparation plants,the type of rough flotation machine in the pre-desliming and selection process is determined,and the sorting effect of individual selection is analyzed.The flotation process consisting of pre-desliming,rough selection,selection,and dehydration was validated through industrial experiments to achieve the expected flotation effect and product quality for high ash and high mud coal slime.
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