Classifying – separating – and assorting solids – Plural – diverse separating operations – Aqueous suspension and sifting
Patent
1978-07-19
1980-09-02
Halper, Robert
Classifying, separating, and assorting solids
Plural, diverse separating operations
Aqueous suspension and sifting
209166, B03B 700
Patent
active
042205239
ABSTRACT:
A process for recovering phosphate values from phosphate ore containing phosphates and silica in which scrubbed and screened ore is subjected to a flotation process which floats finer silica particles but not heavier silica particles, and which does not tend to float phosphates, and removing the floated material thereby forming a concentrate while discarding silica fines. The concentrate is next screened to remove components of the ore which are of sizes greater than the sizes of silica particles which will be removed by said flotation, and removing from the process finer particles which are passed by the screen and predominately contain phosphates because the finer silica particles had previously been floated off, and then comminuting the material retained on said screen and reintroducing it to the process.
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Halper Robert
Jacobs Engineering Group Inc.
Mon Donald D.
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