Flotation of copper sulphide from copper smelter slag using multiple collectors and their mixtures

Roy, Sarabindu; Datta, Amlan; Rehani, Sandeep

doi:10.1016/j.minpro.2015.08.008

Cited by 95 publications

(29 citation statements)

References 8 publications

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“…Asimismo, han sido informados varios métodos para la recuperación de cobre de las escorias, entre los que se puede mencionar los procesos pirometalúrgicos, hidrometalúrgicos y procesos mixtos. Sin embargo, la separación por flotación ha sido ampliamente aplicada y algunos investigadores la consideran como un método efectivo para recuperar el cobre contenido en las escorias (Roy, et al, 2015;Altundogan y Tumen, 1997;Mehta et al, 1999;Herreros et al, 1998).…”

Section: Abstract: Slag Copper Recovery Flotation 1 Introducciónunclassified

Recuperación De Cobre Contenido en Escoria De Cobre Mediante Flotación

Valderrama

González

Santander

et al. 2018

HOLOS

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El cobre se obtiene principalmente a partir de los sulfuros de cobre, mediante procesos clásicos de flotación y pirometalúrgicos, siendo Chile el mayor productor de cobre en el mundo. En nuestro país existen siete fundiciones de cobre que generan grandes volúmenes de escoria. Este trabajo presenta los resultados obtenidos de la flotación de cobre de escorias del horno de reverbero (HR) y del convertidor Teniente (CT) de la Fundición Hernán Videla Lira-Paipote. Así, mediante pruebas de flotación rougher, a escala de laboratorio, se determinó que la granulometría, para ambos casos, corresponde a 70% menor a 74 µm, lográndose recuperaciones de 59,2% escoria HR y 86,8% para la escoria del CT, cuyas leyes de cobre en el concentrado fueron de 3,7% y 23,6% respectivamente. Las dosis de reactivos utilizados fueron 40 g/t de F-703 como colector y 30 g/t de H-70 como espumante. Los tiempos óptimos de flotación de las etapas rougher y cleaner, de ambas escorias, se determinaron mediante cinéticas de flotación. Finalmente se realizaron pruebas a nivel industrial con los resultados de laboratorio, alcanzándose una ley de 18,2% de cobre (recuperación de 56,1%) para escoria HR, mientras que para la escoria CT se obtuvo una ley de 39,1% de cobre con una recuperación de 91,4% PALABRAS-CLAVE: escoria de cobre, recuperación, flotación.

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Section: Abstract: Slag Copper Recovery Flotation 1 Introducciónunclassified

Recuperación De Cobre Contenido en Escoria De Cobre Mediante Flotación

Valderrama

González

Santander

et al. 2018

HOLOS

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“…Basically, they can be classified into three main categories, namely physical separation process, pyrometallurgical process and hydrometallurgical process, such as flotation [9][10][11][12], roasting [13,14] and leaching [15,16]. Indeed, these are effective routes to recover and utilize the copper and other…”

Section: Introductionmentioning

confidence: 99%

Improving Beneficiation of Copper and Iron from Copper Slag by Modifying the Molten Copper Slag

Guo

Zhu

Pan

et al. 2016

Metals

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Abstract:In the paper, a new technology was developed to improve the beneficiation of copper and iron components from copper slag, by modifying the molten slag to promote the mineralization of valuable minerals and to induce the growth of mineral grains. Various parameters, including binary basicity, dosage of compound additive, modification temperature, cooling rate and the end point temperature of slow cooling were investigated. Meanwhile, optical microscope, scanning electron microscope and energy dispersive spectrometer (SEM-EDS) was employed to determine the mineralogy of the modified and unmodified slag, as well as to reveal the mechanisms of enhancing beneficiation. The results show that under the proper conditions, the copper grade of rougher copper concentrate was increased from 6.43% to 11.04%, iron recovery of magnetic separation was increased significantly from 32.40% to 63.26%, and other evaluation indexes were changed slightly, in comparison with unmodified copper slag. Moreover, matte and magnetite grains in the modified slag aggregated together and grew obviously to the mean size of over 50 µm, resulting in an improvement of beneficiation of copper and iron.

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“…There are few articles related to the flotation of iron-lead slag and none of them refers to the use of SEM analysis in order to investigate the interior of the particles. Most of previous studies with slag flotation have noted the need for fine grinding for liberation the metal of interest (Roy et al, 2015;Szépvölgyi et al, 1988) and generally, flotation results in low grade concentrates (ROY et al, 2015;Sarrafi et al, 2004). Roy et al (2015) tested different mixtures of collectors for the flotation of a slag containing copper, iron and silicon.…”

Section: (A) (B)mentioning

confidence: 99%

SEM study of a lead-iron slag flotation process

Nunes¹,

Baltar

Bertolino

et al. 2018

REM, Int. Eng. J.

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Companies producing lead-acid batteries are required by law to recycle their battery scrap. The recycling can be performed by a pyrometallurgical process resulting in slags containing mainly lead and iron. A study was carried out with the aim of recovering the lead contained in this slag. This work has economic and environmental implications. Slag characterization was performed by X-ray diffraction, X-ray fluorescence and scanning electron microscopy (SEM). A laboratory-scale mechanical cell was used for flotation tests. The results showed that Pb-Fe selectivity is possible using ethyl xanthate as collector. The coke floats together decreasing concentrate grade. However, this is no problem because coke participates in the metallurgical process for the production of lead. A concentrate containing 22.9% Pb was obtained from a slag with 2.2% Pb. The process removes more than 99.6% of the iron contained. However, the recovery was only 19.0 %. Analyses from scanning electron microscopy detected the presence of lead inside the iron particles, limiting the possibility of lead recovery.

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Flotation of copper sulphide from copper smelter slag using multiple collectors and their mixtures

Cited by 95 publications

References 8 publications

Recuperación De Cobre Contenido en Escoria De Cobre Mediante Flotación

Recuperación De Cobre Contenido en Escoria De Cobre Mediante Flotación

Improving Beneficiation of Copper and Iron from Copper Slag by Modifying the Molten Copper Slag

SEM study of a lead-iron slag flotation process

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