The Challenge to Scavenge IRON from Tailings Produced By FLOTATION A New Approach: The Super-WHIMS &amp; the BigFLUX Magnetic Matrix

Ribeiro, José Pancrácio; Ribeiro, Claudio Henrique T.; Pinto, Pedro Ferreira; Rocha, Rafaella Bicalho da

doi:10.1590/0370-44672017700106

Cited by 5 publications

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“…The smaller the GAP, the greater the gradient caused by the matrix. Consequently, the increased gradient causes a larger proportion of nonmagnetic particles to be entrained into the concentrate (Ribeiro & Ribeiro, 2013;Ribeiro & Ribeiro, 2017;Pinto & Delboni Júnior, 2019;Rocha et al, 2019). Tests 1 and 7, 2 and 8, 3 and 9, 4 and 10, 5 and 11, and 6 and 12 were performed under the same conditions (feed solids percentage, magnetic field, and washing water pressure), except for the matrix opening, with the former being performed with a GAP of 1.5 mm, showing higher selectivity, and the latter with a GAP of 1.0 mm.…”

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confidence: 99%

“…Castro & Peres (2013) produced pellet feed fines material through a reprocessing route (magnetic concentration and flotation) of tailings disposed in dams. Ribeiro et al (2017) discussed ways of scavenging iron from tailings produced by flotation using WHIMS. For the authors, mining companies should investigate the use of high magnetic fields intensity and matrixes with GAP smaller than 1.5 mm.…”

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Magnetic concentration route for recovering pellet feed fines stored in a mining dam

Gomes

Papini

2022

REM, Int. Eng. J.

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The greatest and noblest challenge of mining engineering for the present and the future of iron ore treatment could be considered as the pursuit of optimizing the use of mineral resources. The use of mining tailings, in the mineral sector itself, or in another industrial branch, meets the needs of circular economy as it increases the useful service life of this material. In order to investigate this scenario, a technological characterization of a sample from a tailings dam was carried out along with magnetic concentration tests in a Wet High-Intensity Magnetic Separator (WHIMS) to propose a possible concentration route. In relation to the characterization itself, the results demonstrated a relative density of 3.04 x 10 3 Kg/m 3 and an average superficial specific area of 3.75 cm³/g. The granulometric analysis classified the material as fine, with d 90 of 0.110 mm and d 50 ≅ 0.049 mm. Quartz, hematite, goethite, kaolinite and manganese oxide were identified in the sample. The test which presented the best results (66.83% Fe and 1.74% SiO 2 ) consisted of the Rougher, Cleaner and Recleaner phases, using a 1.5 mm grooved GAP matrix, a 7,000 Gauss magnetic field, 30% solids, and water pressure at 0.5 kgf/cm 2 (49.0 x 10 3 Pa). Finally, the conclusive results indicate that the studied material can be concentrated through magnetic concentration, keeping in mind the specifications concerning the pellet feed fines commercial product. Besides the financial gain, the activity prolongs the durability of the tailings dam and reduces the environmental impacts associated with these structures.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Magnetic concentration route for recovering pellet feed fines stored in a mining dam

Gomes

Papini

2022

REM, Int. Eng. J.

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“…Maximizing profit and minimizing costs are necessary actions, however the main goal is to reduce the environmental impacts. Thus, the reprocessing of tailings is essential (Li et al, 2010;Wolff & Dutra, 2010;Roy & Das, 2013;Jena et al, 2015;Ozcan & Celik, 2016;Mohanty et al, 2017;Ribeiro et al, 2017;Dauce et al, 2019;Rocha et al, 2019). Turning the tailings or part of them into assets has been a great current challenge because there is still a lack of economically viable technologies in the mining industry for the recovery of the material of interest present in the tailings from the processing of iron ore.…”

Section: Mining Mineraçãomentioning

confidence: 99%

Development of innovation routes for iron ore using high intensity magnetic separators

et al. 2022

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The mineral processing of low-grade iron ores commonly generates large volumes of slime, which are disposed as tailings. Modern mining requires strives to eliminate the use of tailings dams in a maximum effort to increase metallurgical recovery, the security and reduction of the operational cost. This research aims for the recovery of iron contained in the slime, which consists of a material with 38% Fe and <40 µm, originating from the desliming cyclones. Pilot tests were performed on the Wet High-Intensity Magnetic Separator (WHIMS) and on the Vertical Ring Pulsating High Gradient Magnetic Separator (VPHGMS) considering different configurations in terms of operating parameters and routes. The best results were obtained for VPHGMS with an iron content in the concentrate of 67.06% and mass and metallurgical recovery of 32.42% and 56.86%, respectively. In the best condition tested, around 540 thousand tons of concentrate can be incorporated into production and has great environmental relevance.

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“…Este sistema permitiu a elevação do campo magnético de 10000 G, para 18000 G, fazendo uso de matrizes com GAP de 1,1 mm. Segundo Ribeiro [1], o sistema super-WHIMS consiste na utilização de calços complementares, que remetem ao uso de matrizes com uma menor largura, concentram mais energia nas bobinas e potencializam o campo magnético.…”

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Otimização De Separação Magnética Utilizando Sistema Super-Whims E Bigflux Para Concentração De Lamas

Paula¹,

Nogueira²

2018

ABM Proceedings

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Resumo Este trabalho se baseia na apresentação do estudo em escala piloto, realizado pela Mineração Usiminas S.A. (MUSA), para otimização da rota de separação magnética da instalação de tratamento de minérios (ITM) Oeste. A proposta idealizada contempla uma melhor utilização da capacidade instalada das máquinas existentes, através da variação de GAP para as etapas Rougher, Cleaner e Scavenger em apenas dois equipamentos, permitindo assim a inserção de lamas, até então depositadas em barragens de contenção de rejeitos, devido sua faixa granulométrica restrita nas frações mais finas, no circuito de separação magnética, através do sistema Super-WHIMS ® e Matriz Big Flux ® , desenvolvido pela empresa GaustecMagneticThecnology. Após a realização dos testes puderam ser evidenciados os ganhos em recuperação em massa em relação aos valores historicamente praticados em escala industrial, em concordância com a qualidade química necessária para o atendimento da necessidade do negócio. Além disto, a redução do volume de sólidos para a barragem de contenção de rejeitos permite uma maior longevidade das operações. Palavras-chave:Separação Magnética, Lamas, Otimização. MAGNETICSEPARATION OPTIMIZATION USING SUPER-WHIMS AND BIGFLUX SYSTEMS FOR SLIMES CONCENTRATION Abstract This work is based on the presentation of the pilot scale study carried out by MineraçãoUsiminasS.A. (MUSA) to optimize the magnetic separation route of the West Mine. The idealized proposal contemplates a better utilization of the installed capacity of the existing machines, through the GAP variation for the Rougher, Cleaner and Scavenger stages in only two equipment, thus allowing the insertion of tailings, until then deposited in tailing dams, due to its narrow grain size range in the finer fractions in the magnetic separation circuit, through the Super-WHIMS® system and the Big Flux® Matrix developed by Gaustec Magnetic Technology. After the tests, the gains in mass recovery in relation to the values historically practiced on an industrial scale, in accordance with the chemical quality required to meet the business need, could be evidenced. In addition, the reduction of the volume of solids to the tailing dams allows a greater longevity of the operations.

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The Challenge to Scavenge IRON from Tailings Produced By FLOTATION A New Approach: The Super-WHIMS & the BigFLUX Magnetic Matrix

Cited by 5 publications

References 0 publications

Magnetic concentration route for recovering pellet feed fines stored in a mining dam

Magnetic concentration route for recovering pellet feed fines stored in a mining dam

Development of innovation routes for iron ore using high intensity magnetic separators

Otimização De Separação Magnética Utilizando Sistema Super-Whims E Bigflux Para Concentração De Lamas

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