Method for preparing clean coal, ammonium fluorosilicate byproduct and sodium metaaluminate product from coal gangue

The invention discloses a method for preparing clean coal, an ammonium fluorosilicate byproduct and a sodium metaaluminate product from coal gangue. The method comprises the following steps: microwave reaction, microwave acidification, ammoniation absorption and neutralization. Compared with domesti...

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Hauptverfasser:	XUE XISHI, REN WEI, CHEN SHIYI, ZOU XIHONG
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS COMPOUNDS THEREOF FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR INORGANIC CHEMISTRY LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS NON-METALLIC ELEMENTS PEAT PETROLEUM, GAS OR COKE INDUSTRIES SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:	The invention discloses a method for preparing clean coal, an ammonium fluorosilicate byproduct and a sodium metaaluminate product from coal gangue. The method comprises the following steps: microwave reaction, microwave acidification, ammoniation absorption and neutralization. Compared with domestic existing methods of acid dissolution, high-temperature calcinations and the like, the reaction time is greatly shortened, the reaction energy consumption is greatly reduced, a technological process is shortened, the whole processing process is low-carbon and environment-friendly, and environment-friendly efficient comprehensive development and utilization of the coal gangue is truly realized.