METHOD AND APPARATUS FOR MOVING COAL IN SLURRY FORM BY USING OF FLUOROCHLOROCARBONS

Methods of and apparatus for mining, transporting, cleaning, treating, and otherwise processing coal and other solids and for recovering liquid media used in such methods and apparatus. In the method, the coal is beneficiated to separate it from foreign matter mixed therewith by introducing the coal...

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Hauptverfasser:	DOUGLAS V. KELLER, CLAY D. SMITH
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY CONVEYING FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR HANDLING THIN OR FILAMENTARY MATERIAL LIQUEFIED PETROLEUM GAS LUBRICANTS MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLIDMATERIALS OR FLUIDS METALLURGY NATURAL GAS PACKING PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PNEUMATIC TUBE CONVEYORS SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SEPARATION SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATICTABLES OR JIGS SHOP CONVEYOR SYSTEMS STORING SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING ORTIPPING TRANSPORTING
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Beschreibung
Zusammenfassung:	Methods of and apparatus for mining, transporting, cleaning, treating, and otherwise processing coal and other solids and for recovering liquid media used in such methods and apparatus. In the method, the coal is beneficiated to separate it from foreign matter mixed therewith by introducing the coal into a body of a parting liquid which is or contains a halogenated hydrocarbon and has a specific gravity intermediate that of the coal and foreign material so that the coal will rise toward the top of the body of liquid and the foreign material will sink toward the bottom thereof. Any halogenated hydrocarbon present in the parting liquid in the beneficiation step is 1,2-difluoroethane or a fluorochloro derivative of methane or ethane selected from the group consisting of 1-chloro-2,2,2-trifluoroethane, 1,1-dichloro-2,2,2-trifluoroethane, dichlorofluoromethane, 1-chloro-2-fluoroethane, 1,1,2-trichloro-1,2,2-trifluoroethane, 1,1dichloro-1,2,2,2-tetrafluroethane, and trichlorofluoromethane. The apparatus comprises a separator in which coal and foreign material can be separated by a parting liquid, conveyors in which parting liquid can drain from coal and foreign material discharged from said separator, dryers for separating additional parting liquid from the clean coal and the foreign material in the gaseous state, and a system for recovering the vaporized parting liquid and converting it to liquid form.