skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

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:
Issue Date:
Research Org.:
United States Of America, Department Of Energy
Sponsoring Org.:
USDOE
OSTI Identifier:
1176650
Patent Number(s):
H001118
Assignee:
United States Of America, Department Of Energy OSTI
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

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. Tue . "Chemical comminution and deashing of low-rank coals". United States. https://www.osti.gov/servlets/purl/1176650.
@article{osti_1176650,
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 = {12}
}

Patent:

Save / Share: