Selective shear flocculation of chromite from chromite-serpentine mixtures


Akdemir U., Hicyilmaz C.

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, cilt.132, ss.75-79, 1998 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası: 132 Konu: 1
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1016/s0927-7757(97)00168-4
  • Dergi Adı: COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
  • Sayfa Sayıları: ss.75-79

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.