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Title: High gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization

Abstract

This invention relates to an improved device and method for the high gradient magnetic beneficiation of dry pulverized coal, for the purpose of removing sulfur and ash from the coal whereby the product is a dry environmentally acceptable, low-sulfur fuel. The process involves upwardly directed recirculating air fluidization of selectively sized powdered coal in a separator having sections of increasing diameters in the direction of air flow, with magnetic field and flow rates chosen for optimum separations depending upon particulate size.

Inventors:
 [1];  [2]
  1. Oak Ridge, TN
  2. Opelika, AL
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
863612
Patent Number(s):
4212651
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
C - CHEMISTRY C10 - PETROLEUM, GAS OR COKE INDUSTRIES C10L - FUELS NOT OTHERWISE PROVIDED FOR
B - PERFORMING OPERATIONS B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS B03C - MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
gradient; magnetic; beneficiation; dry; pulverized; coal; via; upwardly; directed; recirculating; fluidization; relates; improved; device; method; purpose; removing; sulfur; ash; whereby; product; environmentally; acceptable; low-sulfur; fuel; process; involves; air; selectively; sized; powdered; separator; sections; increasing; diameters; direction; flow; field; rates; chosen; optimum; separations; depending; particulate; size; circulating fluid; removing sulfur; flow rates; process involves; pulverized coal; magnetic field; flow rate; air flow; upwardly directed; gradient magnetic; dry pulverized; environmentally acceptable; powdered coal; circulating air; improved device; magnetic beneficiation; /44/209/

Citation Formats

Eissenberg, David M, and Liu, Yin-An. High gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization. United States: N. p., 1980. Web.
Eissenberg, David M, & Liu, Yin-An. High gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization. United States.
Eissenberg, David M, and Liu, Yin-An. Tue . "High gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization". United States. https://www.osti.gov/servlets/purl/863612.
@article{osti_863612,
title = {High gradient magnetic beneficiation of dry pulverized coal via upwardly directed recirculating fluidization},
author = {Eissenberg, David M and Liu, Yin-An},
abstractNote = {This invention relates to an improved device and method for the high gradient magnetic beneficiation of dry pulverized coal, for the purpose of removing sulfur and ash from the coal whereby the product is a dry environmentally acceptable, low-sulfur fuel. The process involves upwardly directed recirculating air fluidization of selectively sized powdered coal in a separator having sections of increasing diameters in the direction of air flow, with magnetic field and flow rates chosen for optimum separations depending upon particulate size.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1980},
month = {1}
}

Patent:

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