DRY SIEVE TECHNIQUE FOR UP GRADATION OF FINE LIGNITE COAL DEPOSITS AT MATASUKH MINES OF NAGAUR, RAJASTHAN, INDIA

Abstract

In order to overcome energy supply, the mining of lignite and started up gradation by technologically to
energy supply, along with other energy source. The dry sieve technique is a physical method to up gradation of lignite coal
by using fine size of coal particle. The lignite sample contained %FC 7.62, %AS 39.90, S 3.44%, Silica 50.02% and %VM
22.48 and marginal CV 1748.84 kcal/kg. In this technique, lignite coal size range used 0.289 mm to 50 mm and coefficient of
range was detected 98.81% by sieve nesting. The lignite coal was up gradated up to CV 2102.68 kcal/kg and as value add
product CV+353.84 kcal/kg for fine size 100mesh to 1mm .The dry sieve technique may have overcome to energy supply
without using chemical auxiliaries.