Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1990-10-18
1991-12-24
Silverman, Stanley S.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
252 61, B03D 1002, B03D 1016, B03D 106
Patent
active
050749943
ABSTRACT:
A sequential flotation process for the separation of components of a sulfide ore selected from the group consisting of copper and lead sulfide containing ores and copper, zinc and lead sulfide containing ores in which the copper component is initially selectively floated directly from said ore by conditioning the ore with a combination of a source of bisulfite ion and causticized starch to produce a conditioned ore having a pH between approximately 5.7 and 6.5, and thereafter treating the conditioned ore with a collector selected from the group consisting of dialkyl dithiophosphates and alkyl dithiophosphinates.
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patent: 4549959 (1985-10-01), Armstrong
patent: 4877517 (1989-10-01), Bulatovie
"The Broken Hill Concentrator of Black Mountain Mineral Development Co., South Africa", by Beck et al--Presented at Complex Sulfide Ore Conference--Rome, 1980.
"Flotation reagents", American Cyanamid Company, 1960.
Mining Chemicals Handbook, "Mineral Dressing Notes No. 26", American Cyanamid Company, 1986.
Arbiter Nathaniel
Ray Harold M.
Lithgow Thomas M.
Silverman Stanley S.
The Doe Run Company
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