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Title: Method for hydraulically separating carbon and classifying coal combustion ash

Abstract

A method for selective separation of particles from a particle-containing material includes preparing a slurry of the particle-containing material and a dispersant, passing the slurry through a hydraulic classifier in a first direction, establishing a particle flow in a direction that is different from the first direction, and recovering particles having a mean particle size of about 2-7 μm. The flow of particles defines a cross-current flow relative to the slurry feed direction. The method further includes providing the classifier with an interior divider assembly defining at least one inclined channel. The divider assembly typically includes a plurality of substantially parallel dividers separating the classifier into multiple channels having a substantially equal internal volume. A hydraulic classifier for separating particles having a mean particle size of from about 2-7 μm in accordance with the present method is provided also.

Inventors:
;
Issue Date:
Research Org.:
Univ. of Kentucky, Lexington, KY (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1531684
Patent Number(s):
7,963,398
Application Number:
11/451,672
Assignee:
University of Kentucky Research Foundation (Lexington, KY)
DOE Contract Number:  
FC26-03NT41726
Resource Type:
Patent
Resource Relation:
Patent File Date: 2006-06-13
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT

Citation Formats

Robl, Thomas L., and Groppo, John. Method for hydraulically separating carbon and classifying coal combustion ash. United States: N. p., 2011. Web.
Robl, Thomas L., & Groppo, John. Method for hydraulically separating carbon and classifying coal combustion ash. United States.
Robl, Thomas L., and Groppo, John. Tue . "Method for hydraulically separating carbon and classifying coal combustion ash". United States. https://www.osti.gov/servlets/purl/1531684.
@article{osti_1531684,
title = {Method for hydraulically separating carbon and classifying coal combustion ash},
author = {Robl, Thomas L. and Groppo, John},
abstractNote = {A method for selective separation of particles from a particle-containing material includes preparing a slurry of the particle-containing material and a dispersant, passing the slurry through a hydraulic classifier in a first direction, establishing a particle flow in a direction that is different from the first direction, and recovering particles having a mean particle size of about 2-7 μm. The flow of particles defines a cross-current flow relative to the slurry feed direction. The method further includes providing the classifier with an interior divider assembly defining at least one inclined channel. The divider assembly typically includes a plurality of substantially parallel dividers separating the classifier into multiple channels having a substantially equal internal volume. A hydraulic classifier for separating particles having a mean particle size of from about 2-7 μm in accordance with the present method is provided also.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2011},
month = {6}
}

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