Method of controlling self-ignition of low rank coal
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United States of America Patent
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Jul 26, 1988
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N/A
app pub date -
Jul 22, 1987
filing date -
Jul 22, 1987
priority date (Note) -
Expired
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Abstract
Self-ignition of low rank coal is inhibited by application of a permanganate salt, such as potassium permanganate, together with a phosphorus compound, such as a phosphoric or polyphosphoric acid. The inhibitors are applied in aqueous solution following drying of the particulate coal. The combination treatment is much more effective than the use of a permanganate salt alone.
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