Flotation of mica minerals and selectivity between muscovite and biotite while using mixed anionic/cationic collectors

Rao, K. HanumanthaLuleå tekniska universitet,Industriell miljö- och processteknik (author)

Godkänd; 1990; 20070201 (pafi)
Selective flotation of muscovite from a material containing muscovite (15.4%), biotite (13%), and siliceous gangue (quartz and feldspar), using a mixed collector system of sodium oleate and dodecylamine acetate has been described. Muscovite is found to float in preference to biotite, when the pulp is initially conditioned with oleate followed by amine at basic pH values. The results indicate that a product containing 63% muscovite with a recovery of 93% can be obtained, while using 75-150 g/t of oleate and 96 g/t of amine. The biotite grade and recovery are found to be around 30% and 20%, respectively. A good selectivity between muscovite and siliceous gangue is obtained. A final product containing 95% muscovite with an overall recovery of 75% is obtained when the flotation concentrate is subjected to magnetic separation. These studies indicate the possibility of separating muscovite from biotite by using a mixture of collectors.

Antti, Britt-MarieLuleå tekniska universitet (author)
Forssberg, K. S. EricLuleå tekniska universitet(Swepub:ltu)erfo (author)
Luleå tekniska universitetIndustriell miljö- och processteknik (creator_code:org_t)

By the author/editor: Rao, K. Hanumant ...; Antti, Britt-Mar ...; Forssberg, K. S. ...

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Metallurgy and M ...

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