Method for passivating low rank dried coal

Details Method for passivating low rank dried coal Method for passivating low rank dried coal

1987-06-08

1988-11-08

Dees, Carl F.

Fuel and related compositions

Particulate

Treated to reduce spontaneous ignition

C01L 500, C01L 524

Patent

active

047832002

ABSTRACT:
Coal is rendered less subject to abrasion and disintegration by reducing it to a 0.2 to 0.5-inch particle size and drying it at a temperature of 200.degree. to 230.degree. F. for 3-7 minutes. The coal is rendered less susceptible to spontaneous ignition by the application of a treating agent which is a petroleum resid mixed with clarified slurry oil or a petroleum resid mixed with a distillate.

REFERENCES:
patent: 4201657 (1980-05-01), Anderson et al.

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