Physicochemical properties of matte-slag melts taken from vanyukov’s furnace for copper extraction

Vaisburd, S.; Brandon, David; Kozhakhmetov, S. M.; Kenzhaliyev, E.

doi:10.1007/s11663-002-0035-0

Cited by 12 publications

(8 citation statements)

References 2 publications

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“…The estimated values of viscous flow activation energy and crystallisation temperatures of molten slag are within the ranges of 21·8–81·8 kJ mole −1 and 1047–1235°C, respectively (Table 2). Viscosity characteristics of the slag under consideration are close to those of the slag obtained by VF processing at a Balkhash Copper Smelter as reported by Vaisburd et al (2002b) . According to Chen et al (2013) , the values of viscous flow activation energy in the system FeO–SiO 2 lie between 27·2 and 95·0 kJ mole −1 and the ratio FeO x /SiO 2 has prevalent influence on the values of viscosity.…”

Section: Resultssupporting

confidence: 82%

“…The same value s5360 mN m 21 as reported by Vaisburd et al (2002b) was taken for all the slag samples. The hole radii calculated using equation (2) …”

Section: Resultsmentioning

confidence: 99%

“…Viscosity of the multicomponent melts FeO x –SiO 2 –CaO–MgO–Al 2 O 3 had been measured ( Sheludyakov, 1980 ; Zhang et al , 2012 ) in the separate narrow compositional ranges that are typical for specific manufacturers. The data on copper-smelting slag with increased iron (III) oxide and zinc oxide contents are limited ( Vaisburd et al , 2002b ; Huaiwei et al , 2012 ). Moreover, nothing is known about thermal properties of such slag.…”

Section: Introductionmentioning

confidence: 99%

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Viscosity and thermal properties of slag in the process of autogenous smelting of copper–zinc concentrates

Selivanov

Gulyaeva

Istomin

et al. 2014

Mineral Processing and Extractive Metallurgy

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The temperature dependences of slag viscosity in the process of autogenous smelting of copperzinc concentrated products in Vanyukov furnaces (VF) at the Sredneuralsky Copper Smeltery JSC have been revealed. Values of viscous flow activation energy have been determined. Phase transition temperatures in the processes of slag heating and cooling have been measured. The influence of calcium oxide additives on viscosity and on the crystallised slag liquidus point has been evaluated. The results obtained may be used for slag composition improvement with the purpose to reduce copper losses and simplify material preparation to subsequent depletion operation.

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Section: Resultssupporting

confidence: 82%

“…The same value s5360 mN m 21 as reported by Vaisburd et al (2002b) was taken for all the slag samples. The hole radii calculated using equation (2) …”

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Viscosity and thermal properties of slag in the process of autogenous smelting of copper–zinc concentrates

Selivanov

Gulyaeva

Istomin

et al. 2014

Mineral Processing and Extractive Metallurgy

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“…In the case of metal and slag, the mass transfer coefficient of metal is generally 3-10 times larger than that of the slag [14,20]. The viscosity of matte is about 10-100 times larger than that of slag [21,22], and the diffusion coefficient in matte is about 10 times larger than that in slag. However, the viscosity of molten steel is about 100 times larger than that of slag [21], and the diffusion coefficient in molten steel is about 100 times larger than that in slag [21,23].…”

Section: Kinetic Model For the Reactions Between Matte And Slagmentioning

confidence: 99%

A Kinetic Model to Simulate the Reaction Between Slag and Matte for the Production of Ferromanganese Alloy from Steelmaking Slag

Kim

Suzuki

Gao

et al. 2016

J. Sustain. Metall.

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Manganese is used as a key alloying element in various advanced steel products to improve their mechanical properties. The authors have proposed an innovative process to recycle Mn from steelmaking slag. In this process, steelmaking slag is first sulfurized to separate P and Mn, and then the matte is oxidized to increase the Mn/Fe ratio. The equilibrium distribution ratio of Mn, Fe, and Ca between slag and matte has been already clarified. To design an industrial process, a kinetic model to simulate the various reactions that occur simultaneously between the matte and slag was developed by applying the coupled reaction model. In this kinetic model, the mass transfer was calculated by the double film theory by assuming the equilibrium at the interface. The calculation results agreed well with the concentration changes of each element in the matte and slag obtained by experiments. The optimum conditions for the treatment were discussed using this model, and multi-step sulfurization and oxidation processes were proposed.

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“…The density difference between the matte and the slag was assumed to be constant at 1.5 × 10 3 kg m −3 which was reported previously. 35 The viscosity in equation (2) can be determined using the method mentioned earlier. A large number of matte droplets which followed the particle size distribution determined by Kaneda and Okabe 36 was assumed to distribute evenly in the slag layer.…”

Section: Matlab Simulation For Matte Settlingmentioning

confidence: 99%

Numerical simulation of copper recovery from converter slags by the utilisation of spent potlining (SPL) from aluminium electrolytic cells

Chattopadhyay

2016

Canadian Metallurgical Quarterly

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An innovative method was devised to improve copper recovery and operational efficiency of the Cu converter slag-cleaning furnace, by utilising both carbon and fluoride values of an otherwise environmental hazardous material (i.e. spent potlining (SPL)) produced from the aluminium industry. Results based on numerical modelling show that 90% Cu recovery could be achieved by adding as little as 3-4 wt-% of SPL to the molten converter slag. The fluorides and sodiumcontaining compounds in the SPL reduced the slag viscosity, resulting in a much faster settling rate of matte droplets. In this process, the SPL could be detoxified by destroying the cyanides to form harmless N 2 gas, and inertising the fluorides in a much diluted form in the ferro-silicate slag, ensuring a safe disposal to the environment.On a conçu une méthode innovatrice pour améliorer la récupération du cuivre et le rendement opérationnel du four de nettoyage de la scorie du convertisseur de Cu, en utilisant tant la teneur en carbone que la teneur en fluorure d'un matériau autrement dangereux sur le plan environnemental (c'est-à-dire le SPL) produit par l'industrie de l'aluminium. Les résultats basés sur la modélisation numérique montrent qu'on pourrait obtenir une récupération de 90% du Cu en ajoutant aussi peu que 3 à 4% en poids de SPL à la scorie fondue du convertisseur. Les fluorures et les composés contenant du sodium dans le SPL réduisent la viscosité de la scorie, ayant pour résultat une vitesse de déposition plus rapide des gouttelettes de matte. Avec ce procédé, on peut désintoxiquer le SPL en détruisant les cyanures pour former du gaz inoffensif de N 2 et en rendant les fluorures inertes dans une forme bien diluée dans la scorie de ferrosilicate, assurant ainsi une élimination sécuritaire pour l'environnement.

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Physicochemical properties of matte-slag melts taken from vanyukov’s furnace for copper extraction

Cited by 12 publications

References 2 publications

Viscosity and thermal properties of slag in the process of autogenous smelting of copper–zinc concentrates

Viscosity and thermal properties of slag in the process of autogenous smelting of copper–zinc concentrates

A Kinetic Model to Simulate the Reaction Between Slag and Matte for the Production of Ferromanganese Alloy from Steelmaking Slag

Numerical simulation of copper recovery from converter slags by the utilisation of spent potlining (SPL) from aluminium electrolytic cells

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