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Ash and Total Sulphur Study of Coal by Various Beneficiation Techniques

. Asmat Ayoub, Romaisa Amin, Mauzzmah Shahid, Rimsha Raees, Faseeha Ashraf & Huma Shahid


Abstract

During present experimental investigation different physical techniques such as sieving, tabling and flotation were applied and change in ash and total sulphur were compared to the original coal sample. Scanning electron microscopy (SEM) was used to access the morphology of the fractions obtained from different techniques. It was found that sieving is helpful in selecting proper fraction to be used as base for other beneficiation techniques. Concentrated fraction obtained from tabling process show 13% less amount of ash and 11 % less total sulphur than original sample. Middling fraction show 21% less amount of ash and 14% less total sulphur than the original one. The concentration fraction obtained from froth flotation showed 26 % less amount of ash and 9 % less amount of sulfur. From this investigation it is concluded that Concentration and middling fractions obtained from tabling and flotation techniques may be used independently for different energy applications and are more environmentally friendly than the original stock.

Key words: Coal upgradation, Ash content, Total sulfur, Sieving, Beneficiation Techniques, SEM technology

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