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Title: Process for cleaning fine coal

Abstract

A process for the wet concentration and cleaning of fine coal is provided which comprises the steps of desliming and thickening a dilute slurry of fine coal and contaminant particles having a size of less than about 10 mm by introducing the same to a hydrocyclone separator to retain a slurry of particles having a size greater than about 0.1 mm, wet concentrating the last-named slurry and removing the heavier contaminant particles by introducing it to an autogenous dense medium separation vessel having a manifold for injecting water at an intermediate level and controlling the underflow of heavier than coal particles to maintain a fluidized bed of heavier particles and causing a slurry of the lighter coal particles to overflow, and concentrating and dewatering the overflow by means of a static or vibratory sizing screen.

Inventors:
Publication Date:
OSTI Identifier:
6162586
Patent Number(s):
US 4282088
Assignee:
Linatex Corp. of America
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 3 Mar 1980
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL FINES; CLEANING; FLUID INJECTION; FLUIDIZED BED; FUEL SLURRIES; PARTICLE SIZE; SCREENS; SEPARATION PROCESSES; WATER; WATER REMOVAL; DISPERSIONS; FUELS; HYDROGEN COMPOUNDS; MIXTURES; OXYGEN COMPOUNDS; REMOVAL; SIZE; SLURRIES; SUSPENSIONS; 013000* - Coal, Lignite, & Peat- Transport, Handling, & Storage

Citation Formats

Ennis, R E. Process for cleaning fine coal. United States: N. p., 1981. Web.
Ennis, R E. Process for cleaning fine coal. United States.
Ennis, R E. 1981. "Process for cleaning fine coal". United States.
@article{osti_6162586,
title = {Process for cleaning fine coal},
author = {Ennis, R E},
abstractNote = {A process for the wet concentration and cleaning of fine coal is provided which comprises the steps of desliming and thickening a dilute slurry of fine coal and contaminant particles having a size of less than about 10 mm by introducing the same to a hydrocyclone separator to retain a slurry of particles having a size greater than about 0.1 mm, wet concentrating the last-named slurry and removing the heavier contaminant particles by introducing it to an autogenous dense medium separation vessel having a manifold for injecting water at an intermediate level and controlling the underflow of heavier than coal particles to maintain a fluidized bed of heavier particles and causing a slurry of the lighter coal particles to overflow, and concentrating and dewatering the overflow by means of a static or vibratory sizing screen.},
doi = {},
url = {https://www.osti.gov/biblio/6162586}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Aug 04 00:00:00 EDT 1981},
month = {Tue Aug 04 00:00:00 EDT 1981}
}