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US 4,269,721 AGranted
Dust abatement with calcium sulfate
AssigneeStauffer Chemical Company
InventorsKlaus W. Mueller, Norman R. Olsen
Life of this patent
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Abstract
A method of treating stored coal to prevent dusting and reduce moisture penetration of the coal, comprising forming a hardened crust of a hydrated calcium sulfate containing composition over the exposed surface of the coal pile. The calcium sulfate product produced from the fluid bed combustion of coal in the presence of limestone is particularly useful.
Claims5
A method of allaying dusting and moisture penetration of stored coal comprising covering the stored coal with sufficient amount of an aqueous mixture of a calcium sulfate containing composition to form a hardened crust over the stored coal.
Dependencies are inferred from the claim text.