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Title: Chemical comminution and deashing of low-rank coals

Abstract

A method of chemically comminuting a low-rank coal while at the same time increasing the heating value of the coal. A strong alkali solution is added to a low-rank coal to solubilize the carbonaceous portion of the coal, leaving behind the noncarbonaceous mineral matter portion. The solubilized coal is precipitated from solution by a multivalent cation, preferably calcium.

Inventors:
 [1]
  1. Idaho Falls, ID
Issue Date:
Research Org.:
EG & G IDAHO INC
OSTI Identifier:
875152
Patent Number(s):
H1118
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC07-78ID01570
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
chemical; comminution; deashing; low-rank; coals; method; chemically; comminuting; coal; time; increasing; heating; value; strong; alkali; solution; added; solubilize; carbonaceous; portion; leaving; noncarbonaceous; mineral; matter; solubilized; precipitated; multivalent; cation; preferably; calcium; heating value; mineral matter; low-rank coal; alkali solution; rank coal; solubilized coal; rank coals; strong alkali; /44/

Citation Formats

Quigley, David R. Chemical comminution and deashing of low-rank coals. United States: N. p., 1992. Web.
Quigley, David R. Chemical comminution and deashing of low-rank coals. United States.
Quigley, David R. Wed . "Chemical comminution and deashing of low-rank coals". United States. https://www.osti.gov/servlets/purl/875152.
@article{osti_875152,
title = {Chemical comminution and deashing of low-rank coals},
author = {Quigley, David R},
abstractNote = {A method of chemically comminuting a low-rank coal while at the same time increasing the heating value of the coal. A strong alkali solution is added to a low-rank coal to solubilize the carbonaceous portion of the coal, leaving behind the noncarbonaceous mineral matter portion. The solubilized coal is precipitated from solution by a multivalent cation, preferably calcium.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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