skip to main content
Show search Show menu
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution

Abstract

A single dose of additive contributes to three consecutive fine coal unit operations, i.e., flotation, dewatering and reconstitution, whereby the fine coal is first combined with water in a predetermined proportion so as to formulate a slurry. The slurry is then mixed with a heavy hydrocarbon-based emulsion in a second predetermined proportion and at a first predetermined mixing speed and for a predetermined period of time. The conditioned slurry is then cleaned by a froth flotation method to form a clean coal froth and then the froth is dewatered by vacuum filtration or a centrifugation process to form reconstituted products that are dried to dust-less clumps prior to combustion.

Inventors:
 [1];  [2];  [3]
+ Show Inventor Affiliations
  1. Murrysville, PA
  2. Pittsburgh, PA
  3. Finleyville, PA
Publication Date:
Research Org.:
USDOE Pittsburgh Energy Technology Center (PETC), PA (United States)
OSTI Identifier:
869694
Patent Number(s):
US 5379902
Assignee:
United States of America as represented by United States (Washington, DC)
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; simultaneous; single; additive; coal; flotation; dewatering; reconstitution; dose; contributes; consecutive; fine; unit; operations; whereby; combined; water; predetermined; proportion; formulate; slurry; mixed; heavy; hydrocarbon-based; emulsion; mixing; speed; period; time; conditioned; cleaned; froth; form; clean; dewatered; vacuum; filtration; centrifugation; process; reconstituted; products; dried; dust-less; clumps; prior; combustion; predetermined period; unit operations; predetermined proportion; froth flotation; fine coal; heavy hydrocarbon; unit operation; clean coal; coal flotation; flotation method; /209/210/252/

Citation Formats

Wen, Wu-Wey, Gray, McMahan L, and Champagne, Kenneth J. Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution. United States: N. p., 1995. Web.
Copy to clipboard
Wen, Wu-Wey, Gray, McMahan L, & Champagne, Kenneth J. Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution. United States.
Copy to clipboard
Wen, Wu-Wey, Gray, McMahan L, and Champagne, Kenneth J. 1995. "Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution". United States. https://www.osti.gov/servlets/purl/869694.
Copy to clipboard
@article{osti_869694,
title = {Method for simultaneous use of a single additive for coal flotation, dewatering, and reconstitution},
author = {Wen, Wu-Wey and Gray, McMahan L and Champagne, Kenneth J},
abstractNote = {A single dose of additive contributes to three consecutive fine coal unit operations, i.e., flotation, dewatering and reconstitution, whereby the fine coal is first combined with water in a predetermined proportion so as to formulate a slurry. The slurry is then mixed with a heavy hydrocarbon-based emulsion in a second predetermined proportion and at a first predetermined mixing speed and for a predetermined period of time. The conditioned slurry is then cleaned by a froth flotation method to form a clean coal froth and then the froth is dewatered by vacuum filtration or a centrifugation process to form reconstituted products that are dried to dust-less clumps prior to combustion.},
doi = {},
url = {https://www.osti.gov/biblio/869694}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jan 01 00:00:00 EST 1995},
month = {Sun Jan 01 00:00:00 EST 1995}
}
Copy to clipboard
Patent:
View Patent
Save / Share:
Export Metadata
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.

Similar records in OSTI.GOV collections: