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Title: Process for selective grinding of coal

Abstract

A process for preparing coal for use as a fuel. Forming a coal-water slurry having solid coal particles with a particle size not exceeding about 80 microns, transferring the coal-water slurry to a solid bowl centrifuge, and operating same to classify the ground coal-water slurry to provide a centrate containing solid particles with a particle size distribution of from about 5 microns to about 20 microns and a centrifuge cake of solids having a particle size distribution of from about 10 microns to about 80 microns. The classifer cake is reground and mixed with fresh feed to the solid bowl centrifuge for additional classification.

Inventors:
 [1];  [2];  [3]
  1. (San Francisco, CA)
  2. (Hillsborough, CA)
  3. (Benicia, CA)
Publication Date:
Research Org.:
BECHTEL CORP
OSTI Identifier:
875280
Patent Number(s):
US H981
Assignee:
United States of America as represented by United States (Washington, DC) NETL
DOE Contract Number:  
AC22-87PC79867
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; selective; grinding; coal; preparing; fuel; forming; coal-water; slurry; solid; particles; particle; size; exceeding; 80; microns; transferring; bowl; centrifuge; operating; classify; ground; provide; centrate; containing; distribution; 20; cake; solids; 10; classifer; reground; mixed; fresh; feed; additional; classification; coal particle; water slurry; coal-water slurry; containing solid; size distribution; solid particles; particle size; coal particles; solid particle; fresh feed; /44/209/241/

Citation Formats

Venkatachari, Mukund K., Benz, August D., and Huettenhain, Horst. Process for selective grinding of coal. United States: N. p., 1991. Web.
Venkatachari, Mukund K., Benz, August D., & Huettenhain, Horst. Process for selective grinding of coal. United States.
Venkatachari, Mukund K., Benz, August D., and Huettenhain, Horst. Tue . "Process for selective grinding of coal". United States. https://www.osti.gov/servlets/purl/875280.
@article{osti_875280,
title = {Process for selective grinding of coal},
author = {Venkatachari, Mukund K. and Benz, August D. and Huettenhain, Horst},
abstractNote = {A process for preparing coal for use as a fuel. Forming a coal-water slurry having solid coal particles with a particle size not exceeding about 80 microns, transferring the coal-water slurry to a solid bowl centrifuge, and operating same to classify the ground coal-water slurry to provide a centrate containing solid particles with a particle size distribution of from about 5 microns to about 20 microns and a centrifuge cake of solids having a particle size distribution of from about 10 microns to about 80 microns. The classifer cake is reground and mixed with fresh feed to the solid bowl centrifuge for additional classification.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1991},
month = {1}
}

Patent:

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