Selective flotation of phosphate minerals with hydroxamate collectors

Patent · Tue Jan 01 00:00:00 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: Univ. of Utah, Salt Lake City, UT (United States)
• 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

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