Effect of particle shape properties on selective separation of chromite from serpentine by flotation

• Autorzy: Guven Onur , Serdengecti M. Tayhan , Tunc Berivan , Ozdemir Orhan , Karaagaclioglu Ibrahim E. , Çelik Mehmet S.
• Języki publikacji: EN

Abstrakty

EN

Although many studies have been conducted on the morphological variations and its effects on flotation recoveries of a single mineral system, a systematic study for the flotation behavior of mixtures of minerals has not dwelled much. In this study, th flotation behavior of chromite and serpentine minerals was investigated to distinguish and isolate the contribution of morphology in single and binary systems. For this purpose, the shape analyses for the minerals ground as single and mixture were performed, and their flotation behaviors determined with the micro-flotation experiments. Additionally, the zeta potential measurements were carried out in the presence of sodium oleate as a collector. The shape analysis of the ground samples showed that while the roundness values of chromite and serpentine (gangue) minerals as single were quite different, the particle shape of chromite favored serpentine in the mixture system which in turn suggested that the mineral with the high hardness value dominates the shape characteristics in binary grinding conditions. Accordingly, while the flotation characteristics of chromite in the mixture followed the same trend with the flotation of a single chromite system as a function of particle shape, almost a reverse trend was obtained for the shape and flotation of serpentine in the mixture compared to a single serpentine system. Thus, at roundness values of chromite particles from 0.797 to 0.732, the flotation recoveries of chromite in the mixture increased from 51.0% to 75.4%. On the other hand, likewise chromite, the flotation recoveries of serpentine increased from 20.0% to 37.3% proportional to the roundness range of 0.757 and 0.709. These findings in turn showed that the grinding conditions dictate the soft component to be monitored by the harder and denser component which dominates the angularity and floatability of the mixture.

Słowa kluczowe

EN

chromite; serpentine; morphology; flotation; mineral mixtures

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2020
• Tom: Vol. 56, iss. 5
• Strony: 818--828
• Opis fizyczny: Bibliogr. 31 poz., rys., tab.

Twórcy

autor

Guven Onur

• Adana Alparslan Türkeş Science and Technology University, Faculty of Engineering, Department of Mining Engineering, Adana, Turkey

autor

Serdengecti M. Tayhan

• Istanbul Technical University, Department of Mineral Processing Engineering Department, Istanbul-Turkey

autor

Tunc Berivan

• Istanbul Technical University, Department of Mineral Processing Engineering Department, Istanbul-Turkey

autor

Ozdemir Orhan

• Istanbul University-Cerrahpaşa, Department of Mining Engineering, Buyukcekmece, Istanbul-Turkey

autor

Karaagaclioglu Ibrahim E.

• Harran University, Şanlıurfa Technical Sciences, Vocational School, Şanlıurfa-Turkey

autor

Çelik Mehmet S.

• Istanbul Technical University, Department of Mineral Processing Engineering Department, Istanbul-Turkey
• Harran University, Şanlıurfa Technical Sciences, Vocational School, Şanlıurfa-Turkey

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