Reagent scheme for sedimentary phosphate flotation
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United States of America Patent
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Feb 16, 2021
Grant Date -
May 2, 2019
app pub date -
Oct 31, 2018
filing date -
Nov 2, 2017
priority date (Note) -
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Abstract
A process of phosphate flotation comprising: pulping phosphate ore with water to about 55% to 75% solids to produce an ore slurry; conditioning the ore slurry with a new reagent scheme to produce a conditioned slurry; subjecting the conditioned slurry to flotation to produce an underflow and an overflow; and collecting the overflow as phosphate concentrate. The new reagent scheme may comprise a combination of fatty acid, fuel oil, and fatty acid soap, and may not comprise a pH modifier. The process may also work effectively at a lower percent solids than conventional reagent schemes.
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