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Chemical conditioning of fine coal for improved flotation and pyrite rejection

Patent ·
OSTI ID:5871490
;

This patent describes a method for enhancing hydrophobicity of coal of high volatile bituminous rank or lower grade rank as part of a process of froth flotation and separation of coal. The improvement consists of treating the feed coal prior to completion of flotation with at least one compound selected from the group consisting of inorganic peroxy compounds in the absence of polymerization at least one compound being present in an amount sufficient to enhance hydrophobicity of the feed coal to thereby enable the coal to be separated with the froth component in the flotation process.

Assignee:
University of Utah, Salt Lake City, UT
Patent Number(s):
US 4828686
OSTI ID:
5871490
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010402* -- Coal
Lignite
& Peat-- Purification & Upgrading
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
COAL
COAL FINES
COAL PREPARATION
DEMINERALIZATION
DESULFURIZATION
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
INORGANIC COMPOUNDS
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MINERALS
PEROXY RADICALS
PYRITE
RADICALS
REMOVAL
SEPARATION PROCESSES
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS