PROCESS FOR IMPROVING THE QUALITY OF UPGRADED BROWN COAL
A B S T R A c T Densified coal pellets of improved physical properties and enhanced calorific value are produced by a process which includes subjecting coal to a shearing-attritioning step followed by extrusion and drying steps, characterised by incorporating an additive into the coal that is subjec...
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| creator | BUCHANAN, ALAN S HARVEY, KAYE F CAIN, DAVID A CHAFFEE, ALAN L VERHEYEN, THEODORE V JOHNS, REGINALD B |
| description | A B S T R A c T Densified coal pellets of improved physical properties and enhanced calorific value are produced by a process which includes subjecting coal to a shearing-attritioning step followed by extrusion and drying steps, characterised by incorporating an additive into the coal that is subject to the said shearing-attritioning step, said additive being chosen from one or more of the group consisting of: alkali metal hydroxides, alkaline earth metal hydroxides, ammonium hydroxide, alkali metal carbonates:, alkaline earth carbonates, oxides of base metals, oxides of transition metals, and small molecule carbonyl compounds. |
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| subjects | ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS PEAT PETROLEUM, GAS OR COKE INDUSTRIES SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE |
| title | PROCESS FOR IMPROVING THE QUALITY OF UPGRADED BROWN COAL |
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