"Coal Washing is a process of separation mainly based on difference in specific gravity of coal and associated impurities like shale, sand and stones etc so that we get relatively pure marketable coal without changing the physical properties of the coal."
From what I can tell I think it's more of a basic treatment for coal and doesn't actually remove the contaminants. I don't know enough about it to know if CCTC's technology requires that the coal first be treated at a washery? I thought it was interesting from that article that they expect coal output in India to continue to grow overall.
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