Method for the continuous chemical reduction and removal of mineral matter contained in carbon structures
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United States of America Patent
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Oct 25, 1988
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N/A
app pub date -
Dec 10, 1986
filing date -
Feb 19, 1985
priority date (Note) -
Expired
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Abstract
A process for treating carbon to reduce the ash content therein. The process involves treating the carbon with a fluorine acid solution which consists of an aqueous solution of hydrofluorosilicic acid and hydrogen fluoride, such that the available metal oxides are converted to metal fluorides and/or metal fluorosilicates and separating the treated carbon from the metal fluorides and/or metal fluorosilicates produced by the treatment.
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