Treatment of copper flash smelter flue dusts for copper and zinc extraction and arsenic stabilization

Morales, Alejandro; Cruells, M.; Roca, A.; Bergó, R.

doi:10.1016/j.hydromet.2010.09.001

Cited by 97 publications

(32 citation statements)

References 11 publications

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“…Copper content in the slag of flame furnace should be from 0.15 to 0.25%. However, due to significant presence of mechanically included copper matte in the slag, and due to the chemical bound copper in the form of copper oxide, copper content in the slag is higher [1].…”

Section: Sample and Experimental Methodsmentioning

confidence: 99%

“…Sastav i koncentracija elemenata u šljaci zavisi od sastava koncentrata rude koja je prerađena i tehnoloških postupaka prerade. Šljaka predstavlja složene sisteme većeg broja komponenata, koji nastaju na visokoj temperaturi topljenja, kao što su nemetalični uključci i novonastali oksidi [1].…”

Section: Uvodunclassified

“…Sadržaj bakra u šljaci plamene peći trebao bi da bude od 0,15 do 0,25 %. Međutim, zbog značajnog prisustva mehanički uključenog bakrenca u šljaci i zbog hemijski vezanog bakra u obliku oksida sadržaj bakra u šljaci je veći [1].…”

Section: Tabelaunclassified

“…The composition and concentration of elements in slag depends on the composition of ore concentrate which is processed and technological processing methods. Slag represents the complex systems of a number of components, which occur at high smelting temperature, such as non-metallic inclusions and newlyformed oxides [1].…”

Section: Introductionmentioning

confidence: 99%

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Mineralogical characteristics of slag (from the Flotation plant of RTB Bor) granulated in the laboratory conditions

Ljubojev¹,

Marjanović²,

Milanovic³

et al. 2015

Min Metal Eng Bor

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A sample of slag from the Flotation Bor, RTB Bor, was mineralogical tested after granulation in the laboratory conditions. Minerals contained in the sample of granulated slag are: fayalite and ferrite that form the basis with rarely sprayed fine particles of magnetite, pyrite, chalcopyrite, bornite, copper matte and elemental -native copper [6,7]. Granulation of slag was conducted in the laboratory conditions on the device specially designed for this purpose.

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Section: Sample and Experimental Methodsmentioning

confidence: 99%

Section: Uvodunclassified

Section: Tabelaunclassified

Section: Introductionmentioning

confidence: 99%

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Mineralogical characteristics of slag (from the Flotation plant of RTB Bor) granulated in the laboratory conditions

Ljubojev¹,

Marjanović²,

Milanovic³

et al. 2015

Min Metal Eng Bor

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show abstract

“…[4][5][6][7][11][12][13][14] Pyrometallurgy processes containing methods of oxidation roasting, reduction roasting and chlorination roasting, usually lead to secondary arsenic pollution and high energy consumption. 15,16) Most research focused on treatment of arsenic-bearing materials by hydrometallurgical methods.…”

Section: )mentioning

confidence: 99%

Separation and Recovery of Antimony from High Arsenic-bearing Flue Dusts through Selective Oxidation Using MnO<sub>2</sub>

Wang

Zhong

et al. 2017

ISIJ Int.

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The recovery of antimony from high arsenic-bearing flue dusts was carried out by a selective oxidation roasting process using MnO 2 , in which the arsenic was removed through a volatilization and antimony was oxidized to Sb 2 O 4 staying in the roasted products. In a certain range, the MnO 2 additive has an active effective on the arsenic volatilization for the reason that structures of some complicated As-Sb phases were destroyed after the Sb 2 O 3 being oxidized to Sb 2 O 4 and this part of arsenic continued to volatile. About 90.06% arsenic and only about 6.89% antimony went into smoke under the condition of roasting temperature of 723.0 K, MnO 2 amount of 20.5%, and roasting time of 90 min. The MnO 2 selective oxidation provided a good separation of arsenic from high arsenic-bearing flue dusts. The left antimony existing in the roasted products can be reclaimed through a process of reduction roasting and dust collection.KEY WORDS: high arsenic-bearing flue dusts; separation of arsenic and antimony; selective oxidation; MnO 2 ; waste utilization.

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Mechanism and kinetics study on waste acid leaching from copper smelting dust

Cai,

Yu,

Lin

et al. 2024

Env Prog and Sustain Energy

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Copper smelters generate large amounts of copper smelting dust (CSD) that has a high recycling value because it contains about 20% copper. Waste acid can be used to leach CSD. Here, the effects of different temperatures, times and liquid–solid ratios on copper, iron and arsenic leaching rates were investigated. The optimal conditions were determined to be a temperature of 95°C, leaching time of 3 h, and liquid–solid ratio of 7:1. Under these condition, the leaching rate of copper reached 96.37%, and the copper ion concentration was 32.71 g/L. The leaching kinetics date revealed that the leaching of copper and iron was controlled by two different reaction models. The leaching of copper conformed to the Johnson–Mehl–Avrami (JMA) model and was diffusion controlled, and the reaction was rapid in the first 60 min. In contrast, leaching of iron was controlled by a chemical reaction. Copper and iron activation energies were 2.579 and 62.791 kJ/mol, respectively. These results show that CSD waste acid is can be used to dispose of arsenic‐containing hazardous waste in a green, sustainable, and ecologically method.

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Treatment of copper flash smelter flue dusts for copper and zinc extraction and arsenic stabilization

Cited by 97 publications

References 11 publications

Mineralogical characteristics of slag (from the Flotation plant of RTB Bor) granulated in the laboratory conditions

Mineralogical characteristics of slag (from the Flotation plant of RTB Bor) granulated in the laboratory conditions

Separation and Recovery of Antimony from High Arsenic-bearing Flue Dusts through Selective Oxidation Using MnO<sub>2</sub>

Mechanism and kinetics study on waste acid leaching from copper smelting dust

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