The successful burning of ROM (Run-of-Mine) Coal to efficiently fire a stoker boiler has been achieved by a new kind of vibrating grate. It has been permanently retrofitted under an existing stoker boiler at Southern Illinois University located in Carbondale. This grate has been available for productive use since June, 2007. The ROM Coal being burned is the high sulfur, bituminous, stoker type, which is 2 (50mm) × 0 in size, which usually varies in “fines” content from about 20 to 40%, and it has changing moisture contents that typically vary from 8 to 13%. The heat value varies from 9,000 to 12,500 BTU’s per lb.

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