Selective flotation of phosphate minerals with hydroxamate collectors

Patent · Tue Jan 01 04:00:00 EST 2002

OSTI ID:874213

Miller, Jan D ^[1]; Wang, Xuming ^[1]; Li, Minhua ^[1]

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1. Salt Lake City, UT

A method is disclosed for separating phosphate minerals from a mineral mixture, particularly from high-dolomite containing phosphate ores. The method involves conditioning the mineral mixture by contacting in an aqueous in environment with a collector in an amount sufficient for promoting flotation of phosphate minerals. The collector is a hydroxamate compound of the formula; ##STR1## wherein R is generally hydrophobic and chosen such that the collector has solubility or dispersion properties it can be distributed in the mineral mixture, typically an alkyl, aryl, or alkylaryl group having 6 to 18 carbon atoms. M is a cation, typically hydrogen, an alkali metal or an alkaline earth metal. Preferably, the collector also comprises an alcohol of the formula, R'--OH wherein R' is generally hydrophobic and chosen such that the collector has solubility or dispersion properties so that it can be distributed in the mineral mixture, typically an alkyl, aryl, or alkylaryl group having 6 to 18 carbon atoms.

• Research Organization: University of Utah
• DOE Contract Number: FG03-93ER14315
• Assignee: University of Utah Research Foundation (Salt Lake City, UT)
• Patent Number(s): US 6341697
• OSTI ID: 874213
• Country of Publication: United States
• Language: English

Related Subjects

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18
alcohol
alkali
alkali metal
alkaline
alkaline earth
alkyl
alkylaryl
amount
aqueous
aryl
atoms
carbon
cation
chosen
collector
collectors
compound
conditioning
contacting
containing
disclosed
dispersion
distributed
earth
earth metal
environment
flotation
formula
high-dolomite
hydrogen
hydrophobic
hydroxamate
involves
metal
method
mineral
minerals
mixture
ores
phosphate
promoting
properties
r--oh
selective
separating
solubility
str1
sufficient
typically