• Anonymous 12/03/2008 10:42pm

    Coal cleaning systems have been shown to remove up to 90 percent of the pyritic sulfur in coal, although in some coals this amount can be as low as 20 percent.. However, pyritic sulfur generally accounts for only about one half of the total sulfur found in coal. For this reason physical coal cleaning is rarely thought of as a stand-alone SO2 emission control strategy.

    Here is a link that might be useful:

Track with MyOC