Process for producing coal-water slurry at high concentration
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United States of America Patent
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May 24, 1988
Grant Date -
N/A
app pub date -
Jul 18, 1986
filing date -
Jul 23, 1985
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coal - water slurry at high concentration which has a low viscosity and favorable flowing property is prepared by using a surface active substance prepared by sulfonating and oxidizing at least one of the starting materials selected from distilled petroleum oils, petroleum pitches, asphalts, distilled coal oils, coal pitches or coals, applying condensation as required and then neutralizing the thus obtained product with alkalis.
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