Modified alcohol frothers for froth flotation of coal
This patent describes a froth flotation process wherein solid coal particles are selectively separated under coal froth flotation conditions as a froth phase from remaining solid feed particles as an aqueous phase in the presence of a coal particle collector and an alcohol frother. The improvement described here is characterized by the alcohol frother comprising the reaction product of a C/sub 5/-C/sub 10/ diol and a compound selected from the group consisting of: (a) between about 2 and 10 moles of an alkylene oxide selected from the group consisting of ethylene oxide, propylene oxide, and mixtures thereof, and (b) an acrylonitrile, the resulting frothing agent having at least one hydroxyl group and providing greater coal recovery than use of the diol as the frothing agent.
- Assignee:
- Sherex Chemical Co., Inc., Dublin, OH
- Patent Number(s):
- US 4606818
- OSTI ID:
- 5378289
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
ACRYLONITRILE
ALCOHOLS
ALKENES
CARBONACEOUS MATERIALS
COAL
COAL FINES
COAL PREPARATION
DISPERSIONS
ENERGY SOURCES
ETHYLENE
FLOTATION
FOSSIL FUELS
FUELS
GLYCOLS
HYDROCARBONS
HYDROXY COMPOUNDS
MATERIALS
MIXTURES
NITRILES
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PROPYLENE
REAGENTS
SEPARATION PROCESSES