Determination of Optimum Flotation Parameters of Zonguldak Fine Hard Coal by Using Efficiency Index

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According to the improvement of coal mining mechanization techniques, the proportion of fine coal has been regularly increased. Flotation is still the most effective method of fine coal benefication in the present case. Clean coal ash and combustible recovery are commonly used flotation evaluation parameters. Coal cleaning performance can be evaluated by a simple index called efficinency index. This index is a useful parameter to compare the relative performances of the cleaning operation under the various operating conditions. In this study, the optimal flotation parameters of Zonguldak- Kozlu fine hard coal having 46.10% ash content were determined by using efficiency index. It was determined optimal particle size, collector type and dosage, frother type and dosage and depressant dosage. As a result, the rougher clean coal having 55.48% by weight and 18.84% ash content were obtained. Moreover, the clean coal having 36.43% by weight and 12.78% ash content were obtained in the cleaning flotation stage.

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Efficiency Index , Coal flotation , Collector , Frother

Afyon Kocatepe University Journal Of Science an‎d Engineering

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Afyon Kocatepe University Journal Of Science an‎d Engineering