Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1981-05-05
1982-08-03
Yudkoff, Norman
Classifying, separating, and assorting solids
Fluid suspension
Liquid
210729, B03D 114
Patent
active
043426484
ABSTRACT:
Direct flotation of pyrochlore from its ore can be carried out at acidic pH using 1-amidoethyl-2-substituted imidazolines of the formula ##STR1## wherein R and R' are independently alkyl or alkenyl of 8 to 22 carbons, or their salts. In the presence of large amounts of carbonate in the ore, the pulp is acidified with hydrofluoric acid, fluosilicic acid, or their acid reacting compounds. Using this process, pyrochlore concentrates can be obtained by direct flotation from ore containing 0.1% or more of sulphide compounds calculated as FeS.sub.2.
REFERENCES:
patent: 2297689 (1942-10-01), O'Mealoy
patent: 2327408 (1943-08-01), Ellis
patent: 2364272 (1944-12-01), Christmann
patent: 2380698 (1945-07-01), Jayne
patent: 2395475 (1946-02-01), Gibbs
patent: 2483192 (1949-09-01), Gieseke
patent: 2494132 (1950-01-01), Jayue
patent: 2578290 (1951-12-01), Duke
patent: 2708666 (1955-05-01), Carpenter
patent: 2792404 (1957-05-01), Garmaise
patent: 2875896 (1959-03-01), Last
patent: 2951585 (1960-09-01), Burks
patent: 2959281 (1960-11-01), Faucher
patent: 3014585 (1961-12-01), Noblitt
patent: 3214018 (1965-10-01), Neal
patent: 3910836 (1975-10-01), Raby
patent: 3990966 (1976-11-01), Stanley
Hoechst Information Sheet 8.77 HOE F2603, HOE F2604 and HOE F2642, Cat. Collectors For-Non-Sulfide Minerals.
Biss Rudy
Nadeau Raymond
Les Services TMG Inc.
Yudkoff Norman
LandOfFree
Direct flotation of pyrochlore does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Direct flotation of pyrochlore, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Direct flotation of pyrochlore will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1467784