Process for phosphate beneficiation
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United States of America Patent
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-
Aug 6, 1996
Grant Date -
N/A
app pub date -
Apr 12, 1994
filing date -
Apr 12, 1994
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process is described for separation of oxidic minerals, such as phosphate. The process is a froth flotation process utilizing a novel collector, which is comprised of: 1. tall oil or any other commercial fatty acids that may contain rosin; 2. fuel oil; 3. N-substituted-N-mixed alkyoxy-propylmaleimic acid derivative; 4. fatty acid sulfonate; 5. alkyl alcohol ether sulfate; 6. alkyl alcohol sulfate; The collector is added to the aqueous slurry of phosphate ore to be conditioned in a conventional manner. The conditioning reagents include alkaline pH modifiers, such as sodium hydroxide, sodium carbonate or ammonia. The conditioning pH value is controlled at 7.0-11.5. After conditioning, the reagentized slurry is transferred into a flotation cell and flotation is conducted in a traditional process.
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