Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1976-03-10
1977-08-30
Halper, Robert
Classifying, separating, and assorting solids
Fluid suspension
Liquid
B03D 102
Patent
active
040453359
ABSTRACT:
Langbeinite and kieserite are beneficiated in a flotation process in which separation of ore particles is conducted in a froth flotation process with a magnesium chloride brine containing at least 20 moles MgCl.sub.2 per 1000 mols H.sub.2 O. Said brine is maintained at a pH below about 3.5. The preferred flotation agent is a combination of a fatty acid amine (preferably tallow amine) and an organic acid, either oleic or sebacic acid, in an approximate ratio of 2 to 4 parts amine to 1 part oleic or sebacic acid, and preferably in an amine-oleic or amine-sebacic acid ratio of about 3:1. Flotation is preferably conducted in two stages wherein the sink product from the rougher flotation contains langbeinite above about 95% concentration which is relatively free of kieserite and the froth from the rougher flotation is passed to a second "cleaner" flotation step where the kieserite is further concentrated to above about 75% kieserite. The sink product from the cleaner flotation is recycled to the rougher flotation step for further processing with the pulp containing the incoming ore particles.
REFERENCES:
patent: 2702121 (1955-02-01), Colin
patent: 2766884 (1956-10-01), Marullo
patent: 2766885 (1956-10-01), Marullo
patent: 2921678 (1960-01-01), Fuchsman
patent: 3049233 (1962-08-01), Marullo
patent: 3447681 (1969-06-01), Ramirez
Adams Ben E.
Gidak, Jr. Edward J.
Duval Corporation
Halper Robert
Pugsley Frank B.
Rosenthal Alan D.
Sroufe Delmar L.
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