Mild oxidative coal desulfurization

A process for the removal of pyrite from coal which comprises preparing an aqueous slurry containing finely-divided coal particles; adding to the slurry an hydroxide or carbonate of an alkali or alkaline earth metal selected from the group consisting of sodium, lithium, potassium and magnesium, as w...

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Bibliographische Detailangaben
1. Verfasser:	WILSON, STEPHEN THOMAS
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	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
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Beschreibung
Zusammenfassung:	A process for the removal of pyrite from coal which comprises preparing an aqueous slurry containing finely-divided coal particles; adding to the slurry an hydroxide or carbonate of an alkali or alkaline earth metal selected from the group consisting of sodium, lithium, potassium and magnesium, as well as mixtures of these hydroxides and carbonates, in amounts sufficient to continuously maintain the pH of the slurry between about 8 and 12; and then agitating the slurry while treating the slurry with oxygen or an oxygen-containing gas.