Technology to treat coal- reduce ash content without adding moisture and remove stones.
coal dry beneficiation technology of M/s. Ardee Business Services Pvt. Ltd., Visakhapatnam
system at pilot demo processed over one lakh tonnes of coal, detected and removed stones & shale and in the process improved the Useful Heat Value (UHV) of coal by about 750 Kcal / kg and reduced the ash content by 5 to 8%.
No incentive to mining firms to invest in the technology as they are paid by grades. There are few grades under UHV system followed in India. Alternative of Gross Calorific Value (GCV) based grading system with 20 grades and bandwidth of 200 Kcal/kg on GCV scale is under discussion for ages.
Power plan customers feel it is their right to get clean coal and cleaning coal of stones is not their business.