Investigation of effect of colemanite addition on copper losses in matte smelting slag

Rüşen, Aydın; Geveci, Ahmet; Topkaya, Yavuz; Derin, Bora

doi:10.1179/1879139512y.0000000005

Cited by 12 publications

(7 citation statements)

References 25 publications

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“…Physical, chemical, and mineralogical characterizations of the SM-SS couple were previously described in detail. 20 According to this previous study, when the FeO-Fe 2 O 3 - Figure 1 shows a schematic diagram of the experimental setup mainly consisting of a high-temperature vertical tube furnace, a gas supplying system with silica gel columns, gas cleaning furnaces, and gas washing columns.…”

Section: Methodsmentioning

confidence: 99%

“…Taking into consideration this situation, viscosity as a property of slag phase can be lowered by adding some fluxing agents like CaF 2 , CaO, and B 2 O 3 in several industries. [14][15][16][17][18][19] Recent studies 20,21 also showed that the mechanical type of copper loss can be prevented by adding colemanite as a fluxing agent. However, previous studies were carried out under inert gas (N 2 or Ar) atmosphere.…”

Section: Introductionmentioning

confidence: 99%

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Investigation of Copper Losses to Synthetic Slag at Different Oxygen Partial Pressures in the Presence of Colemanite

Rüşen

Derin

Geveci

et al. 2016

JOM

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Copper losses to slag are crucial for copper matte smelting and converting stages. One factor affecting the copper losses to slag during these processes is partial pressure of oxygen. In this study, theoretical and experimental investigations of oxygen partial pressure effect on copper losses to fayalite type slag in the presence of colemanite were investigated. Theoretical considerations include liquidus temperatures and phase diagrams of the fayalite type slag calculated by the FactSage software program. In the experiments, a synthetic matte-slag (SM-SS) was produced by melting certain amounts of reagent grade Fe 2 O 3-SiO 2 and metallic Fe as starting materials. Experiments were carried out with SM-SS pair by the addition of calcined colemanite (from 0% to 6%) under various partial pressures of oxygen (10 À7 , 10 À9 , 10 À11 atm) at 1250°C for 2 h. From the experimental results, it was found that the amount of copper in slag decreased slowly when colemanite was increased under all oxidizing atmospheres. The lowest copper content in synthetic slag was obtained as 0.38% after 6% colemanite addition.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Investigation of Copper Losses to Synthetic Slag at Different Oxygen Partial Pressures in the Presence of Colemanite

Rüşen

Derin

Geveci

et al. 2016

JOM

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“…Therefore, in some smelting processes, apart from silica, limestone (CaCO 3 ) is added to the smelting charge to balance slag basicity, and to decrease the melting point and viscosity of the slag. 7,[10][11][12][13] In addition, some researchers 10,11,[14][15][16] have studied colemanite (2CaOAE3B 2 O 3 AE5H 2 O) as flux in the steel industry and proved that the colemanite addition leads to lower viscosity and the melting temperature of the steelmaking slags. Therefore, this study has aimed to investigate the effect of some fluxing agents (CaO, colemanite or B 2 O 3 ) on copper losses to slag for the copper matte smelting process in order to reduce copper losses in the slag phase.…”

Section: Introductionmentioning

confidence: 99%

Effects of Some Additives on Copper Losses to Matte Smelting Slag

Rüşen

Geveci

Topkaya

et al. 2016

JOM

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“…Cobalt is mainly dispersed in fayalite and most of the copper exists as sulfides [9,10]. Therefore, in the nickel converter slag, the sulfides of Ni and copper result in the loss of Ni and Cu [11,12].…”

Section: Introductionmentioning

confidence: 99%

Influence of Desulfurization with Fe2O3 on the Reduction of Nickel Converter Slag

et al. 2020

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Generally in the nickel converter slag, metals are mainly in the form of sulfides, which are difficult to separate from slag. Although metal oxides in the slag, such as NiO, CoO, and Cu2O, are easily reduced into metal using carbon, the presence of sulfur inhibits the reduction reaction. In this study, the addition of Fe2O3 to nickel converter slag produced desulfurized slag, which enhanced the carbothermal reduction process. Increasing the desulfurization rate promoted the conversion of sulfides into oxides in slag, which significantly increased the activity of NiO, Cu2O, and Fe2O3. However, the residual sulfur content had no significant effect on the activity of FeO and CoO, due to the high initial FeO content and cobalt existing mainly in the form of oxides. The optimum addition of Fe2O3 was 15.0 g per 100 g nickel slag, while the desulfurization ratio was 36.84% and the rates of nikel, cobalt and copper recovery were 95.33%, 77.73%, and 73.83%, respectively.

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Investigation of effect of colemanite addition on copper losses in matte smelting slag

Cited by 12 publications

References 25 publications

Investigation of Copper Losses to Synthetic Slag at Different Oxygen Partial Pressures in the Presence of Colemanite

Investigation of Copper Losses to Synthetic Slag at Different Oxygen Partial Pressures in the Presence of Colemanite

Effects of Some Additives on Copper Losses to Matte Smelting Slag

Influence of Desulfurization with Fe2O3 on the Reduction of Nickel Converter Slag

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