Selective flocculation process for the recovery of phosphate
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United States of America Patent
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-
Sep 1, 1987
Issued Date -
N/A
app pub date -
Apr 3, 1985
filing date -
Aug 19, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A process for separating and recovering non-metallic minerals, particularly phosphate, from an ore containing non-uniform sized particles, including colloidal particles. The ore is slurried in an alkaline, aqueous solution with a dispersing agent. A flotation collector is added, and the mixture is contacted with a hydrophobic, high molecular weight, nonionic polymer to flocculate the fine particles and make them amenable to subsequent flotation. A second embodiment provides a process for the recovery of an upgraded non-metallic ore from ore slimes, such as phosphate slimes, utilizing a high molecular weight, polyacrylamide, anionic flocculating agent.
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