Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1997-09-05
1999-02-02
Lithgow, Thomas M.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209 12, 209 17, 209 5, 241 20, 241 241, B03D 102
Patent
active
058653180
ABSTRACT:
An improved reverse crago process for beneficiating siliceous phosphate includes the steps of subjecting a siliceous phosphate ore material to amine floatation so as to obtain a prefloat concentrate, and screening the prefloat concentrate so as to separate it into 1) a fine predominantly phosphate fraction without substantial amounts of silica, and 2) a coarse fatty acid floatation feed fraction containing phosphate and substantial silica. The coarse fraction is subjected to fatty acid flotation so as to recover phosphate as a fatty acid flotation concentrate.
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Yu Yingxue
Zhang Jinrong
Florida Institute of Phosphate Research
Lithgow Thomas M.
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