Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1978-05-11
1979-10-23
Halper, Robert
Classifying, separating, and assorting solids
Fluid suspension
Liquid
B03D 102
Patent
active
041720296
ABSTRACT:
In the flotation of phosphate ore slurries with fuel oil and a fatty acid, the addition of an aromatic polycyclic, hydrocarbon compound bearing a nuclear sulfonic acid or sulfonate moiety on each ring to the ore slurry prior to conditioning enhances the separation of phosphate from silica. Disulfonated biphenyl or diphenyl ether compounds and disulfonated or trisulfonated triphenyl diether, triphenyl or biphenylyl phenyl ether compounds, wherein the compound bears at least one nuclear alkyl group having from 12 to 22 carbon atoms, are particularly advantageous additives in a phosphate flotation process.
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patent: 3164549 (1965-01-01), Seymour
patent: 3292787 (1966-12-01), Fuerstenau
patent: 3405802 (1968-10-01), Preller
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Glenn Michael L.
Halper Robert
The Dow Chemical Company
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