Deashing process for coal

Details Deashing process for coal Deashing process for coal

1984-09-26

1986-10-21

Metz, Andrew H.

Fuel and related compositions

Liquid fuels

Aluminum or heavy metal, other than lead, containing

44 1SR, C10L 100

Patent

active

046183469

ABSTRACT:
A process for reducing ash content of coal with an initial concentration of inherent ash of approximately 0.25 w/o to approximately 3 w/o. The coal is swollen and wetted with an alcohol solution such as methanol, then deashed with a mineral acid solution such as hydrochloric and hydrofluoric acid. The demineralized coal is neutralized, washed, and dried for use in making coal slurries with a very low ash content.

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