Selective shear flocculation of chromite from chromite-serpentine mixtures

Akdemir, U; Hicyilmaz, C

doi:10.1016/s0927-7757(97)00168-4

Selective shear flocculation of chromite from chromite-serpentine mixtures

Akdemir U., Hicyilmaz C.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, cilt.132, sa.1, ss.75-79, 1998 (SCI-Expanded, Scopus)

Yayın Türü: Makale / Tam Makale
Cilt numarası: 132 Sayı: 1
Basım Tarihi: 1998
Doi Numarası: 10.1016/s0927-7757(97)00168-4
Dergi Adı: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Sayfa Sayıları: ss.75-79
Orta Doğu Teknik Üniversitesi Adresli: Hayır

Özet

In this study, shear flocculation of chromite from mixtures of chromite and serpentine was investigated. The effects of zeta potential, contact angle, stirrer speed, flocculation (stirring) time, settling time and concentration of sodium oleate, Na2SiO3 and Na2SiF6 were tested. Control of zeta potential was the key factor for selective aggregation. Experiments carried out at optimum conditions yielded a concentrate (settled material) assaying 44.6% Cr2O3 with a recovery of 81.0% and selectivity index of 9.70 from a mixture containing 29.4% Cr2O3. (C) 1998 Elsevier Science B.V.