Study of new commercial collectors for the recovery of coarse quartz particles in iron ore flotation

• Autorzy: de Oliveira Geraldo Lisboa , da Silva Gilberto Rodrigues

Identyfikatory

DOI

10.37190/ppmp/174292

• Języki publikacji: EN

Abstrakty

EN

Currently, a small range of commercial collectors is available for the use in reverse iron ore flotation at Vale. This input represents a considerable unit cost, being essential for the concentration of low content itabiritic iron ores. The present work evaluated the reverse cationic flotation of an itabiritic ore with low iron content (39.6% Fe) from the Iron Quadrangle (BR) in bench scale tests, focusing on the use of new collectors to remove coarse quartz. The sample presents 19% of its particles as oversize in the 0.150 mm sieve. The poor flotation of coarse quartz particles (>0.150 mm) causes significant problems in various iron ore flotation circuits by contaminating the concentrate. The study evaluated the performance of 10 new collectors from the etheramine family with different degrees of neutralization and at different collector dosages. The flotation process variables were set as industrially practiced at the Cauê iron ore plant (BR). In tests varying the specific collector dosage, the nonneutralized etheramines showed improved performance compared to the current 50% neutralized etheramine used in the plant, achieving industrial targets: concentrate SiO2 content rate lower than 4.5% (1.4%), tailings iron content lower than 23% (18.94%), metallurgical recovery greater than 66% (74,8%), and Gaudin Selectivity Index greater than 6.6 (10.5). The 0.150 mm oversize in the concentrate, mostly coarse quartz particles, was reduced from 5.7% down to 1.2%, indicating the potential for the industrial application of non-neutralized etheramines in the recovery of coarse quartz.

Słowa kluczowe

EN

flotation; new collector; amine; iron ore; coarse quartz

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2023
• Tom: Vol. 59, iss. 5
• Strony: art. no. 174292
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

de Oliveira Geraldo Lisboa

• Postgraduate Program in Metallurgical, Materials and Mining Engineering, Professional Master´s Degree, Federal University of Minas Gerais, MG, Brazil

autor

da Silva Gilberto Rodrigues

• Department of Mining Engineering, Federal University of Minas Gerais, MG, Brazil

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).