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Selective flotation of inorganic sulfides from coal

Patent ·
OSTI ID:5071860
;

This patent describes a method in which pyritic sulfur is removed from coal or other carbonaceous material through the use of humic acid as a coal flotation depressant. Following the removal of coarse pyrite, the carbonaceous material is blended with humic acid, a pyrite flotation collector and a frothing agent within a flotation cell to selectively float pyritic sulfur leaving clean coal as an underflow.

Assignee:
Dept. of Energy, Washington, DC
Patent Number(s):
US 4867868
Application Number:
PPN: US 7200100A
OSTI ID:
5071860
Country of Publication:
United States
Language:
English

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Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
CARBONACEOUS MATERIALS
CHALCOGENIDES
CLEANING
COAL
COAL PREPARATION PLANTS
ELEMENTS
ENERGY SOURCES
FLOTATION
FOSSIL FUELS
FUELS
HUMIC ACIDS
INDUSTRIAL PLANTS
IRON COMPOUNDS
IRON SULFIDES
MATERIALS
MINERALS
NONMETALS
ORGANIC ACIDS
ORGANIC COMPOUNDS
PYRITE
SEPARATION PROCESSES
SULFIDE MINERALS
SULFIDES
SULFUR
SULFUR COMPOUNDS
TECHNOLOGY ASSESSMENT
TRANSITION ELEMENT COMPOUNDS