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Title: Method of removing ash components from high-ash coals

Abstract

A method of removing ash components from coals, particularly high-ash bituminous and sub-bituminous coals, comprises grinding the coals and suspending the ground coal in an aqueous media to form a raw suspension, fusing the raw suspension and without further additives stirring for 60 to 360 minutes at from 250 to 350/sup 0/C and at a pressure of from 50 to 80 atm. Thereupon, the fused suspension is cooled and the pressure thereof is relieved. The aqueous phase containing the dissolved ash components is separated from the coal.

Inventors:
Publication Date:
OSTI Identifier:
6643420
Patent Number(s):
US 4098583
Assignee:
Firma Carl Still Recklinghausen
Resource Type:
Patent
Resource Relation:
Patent Priority Date: Priority date 19 Mar 1976, German, Federal Republic of (F.R. Germany)
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; DEASHING; ALKALI METAL COMPOUNDS; CARBONATES; GRINDING; HYDROXIDES; CARBON COMPOUNDS; CARBONACEOUS MATERIALS; COMMINUTION; ENERGY SOURCES; FOSSIL FUELS; FUELS; HYDROGEN COMPOUNDS; MACHINING; OXYGEN COMPOUNDS; 010402* - Coal, Lignite, & Peat- Purification & Upgrading

Citation Formats

Tippmer, K. Method of removing ash components from high-ash coals. United States: N. p., 1978. Web.
Tippmer, K. Method of removing ash components from high-ash coals. United States.
Tippmer, K. 1978. "Method of removing ash components from high-ash coals". United States.
@article{osti_6643420,
title = {Method of removing ash components from high-ash coals},
author = {Tippmer, K},
abstractNote = {A method of removing ash components from coals, particularly high-ash bituminous and sub-bituminous coals, comprises grinding the coals and suspending the ground coal in an aqueous media to form a raw suspension, fusing the raw suspension and without further additives stirring for 60 to 360 minutes at from 250 to 350/sup 0/C and at a pressure of from 50 to 80 atm. Thereupon, the fused suspension is cooled and the pressure thereof is relieved. The aqueous phase containing the dissolved ash components is separated from the coal.},
doi = {},
url = {https://www.osti.gov/biblio/6643420}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 04 00:00:00 EDT 1978},
month = {Tue Jul 04 00:00:00 EDT 1978}
}