The Distribution of Sn Between CaO–CuOx–FeOy–SiO2 Slag and Copper Metal at 1300 °C

Bulck, Amy Van den; Turner, Scott S.; Guo, Muxing; Malfliet, Annelies; Blanpain, Bart

doi:10.1007/978-3-319-95022-8_87

Cited by 5 publications

(3 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The slopes of trend lines fitted to the experimental points were between −0.53 and −0.51, which correspond to an oxidation degree of Sn 2+ , i.e., dissolution into the slags as SnO. The obtained distribution coefficient values, as well as the oxide form are in fairly good agreement with previous publications [19][20][21][22][23][24][25][26][27] as far as relevant comparisons can be made. A comparison with the results obtained by Avarmaa et al [27] with pure iron-silicate slag shows that saturating the slag with alumina does not have a very significant effect on the value of the distribution coefficient.…”

Section: Discussionsupporting

confidence: 87%

“…With different commercially available or in-house standard reference materials, matched to the matrix of the unknown samples as well as possible, it also performs extremely well in trace or even minor element concentration range. In this work, the limits of quantification, i.e., the concentrations that can be reported reliably [23], of EPMA for tin and antimony were in the order of 400 ppmw, and therefore EPMA data was used above this concentration.…”

Section: Discussionmentioning

confidence: 99%

“…Examples include different pretreatment methods [10], leaching [11][12][13] and pyrometallurgical waste processing. Focusing on the latter, studies have been conducted in tin-slag systems providing maximum solubility of tin in different types of slags [14][15][16][17][18] and, for relevant comparisons with the results of this study, in different copper-slag systems [19][20][21][22][23][24][25][26][27]. However, no data exists on the effect of alkali metal oxides in slag, in this case K 2 O, on the distribution behavior of tin with high-alumina slags common in secondary copper smelting processes.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Behavior of Tin and Antimony in Secondary Copper Smelting Process

et al. 2019

View full text Add to dashboard Cite

Different types of metal-bearing wastes, such as WEEE (Waste Electrical and Electronic Equipment), are important urban minerals in modern society, and the efficient recycling and reuse of their metal values is of key interest. Pyrometallurgical copper smelting is one of the most prominent ways of treating WEEE, however, more accurate experimental data is needed regarding the behavior of different elements during each process stage. This article investigates the behavior of tin and antimony, both commonly present as trace elements in electrical and electronic waste, in secondary (i.e., sulfur-free) copper smelting conditions. The experiments were conducted in oxygen partial pressure range of 10−10–10−5 atm, covering the different process steps in copper smelting. The basis of the equilibrium system was metallic copper–iron silicate slag, with the addition of alumina and potassium oxide to account for the presence of these compounds in the actual industrial process. The results showed that the distribution coefficients of both trace metals, LCu/slag = [wt % Me]copper/(wt % Me)slag, increased significantly as a function of decreasing oxygen pressure, and the addition of basic potassium oxide also had an increasing effect on the distribution coefficient. A brief comparison between EPMA and LA-ICP-MS (electron probe microanalysis and laser ablation–inductively coupled plasma–mass spectrometry), the two in situ analytical techniques used, was also presented and discussed.

show abstract

Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Behavior of Tin and Antimony in Secondary Copper Smelting Process

et al. 2019

View full text Add to dashboard Cite

show abstract

Behavior of Ga, In, Sn, and Te in Copper Matte Smelting

Sukhomlinov

Klemettinen

O’Brien

et al. 2019

Metall Mater Trans B

View full text Add to dashboard Cite

The distributions of Ga, In, Sn, and Te between copper-iron mattes and silica-saturated iron silicate slags over a wide range of matte grades 55 to 75 pct Cu were determined at 1300 °C using a gas-phase equilibration-quenching technique and direct phase composition analysis by Electron Probe X-ray Microanalysis and Laser Ablation-Inductively Coupled Plasma-Mass Spectrometry. Alumina from aluminum, a typical minor element of electric and electronic copper scrap, and lime were adopted as slag modifiers for increasing the trace element recoveries. Gallium and tin were distributed predominantly in the slag, indium preferred sulfide matte at low matte grades and slag at high, whereas tellurium strongly favored the sulfide matte in particular in high matte grades. The slag modifiers alumina and lime had a minor impact on the distribution coefficients of gallium and tin, but for indium and tellurium the distribution coefficients were more strongly affected by the basic oxides. The strong tendencies of tin and tellurium to vaporize at the experimental temperature were confirmed.

show abstract

Measurement of SnO Activity Coefficient in CaO–SiO2–FetO–Al2O3 Slag Saturated with Fe

Shinoda,

Iwama,

Kato

et al. 2023

J. Sustain. Metall.

View full text Add to dashboard Cite

It is important to clarify the behavior of elements in the reaction between molten CaO–SiO2–FetO–Al2O3 slag and liquid metal during the remelting of Cu scrap. To estimate the desirable slag composition for retaining Sn in metal, the effects of the slag basicity and the concentrations of FetO and Al2O3 on the SnO activity coefficient were investigated. Molten CaO–SiO2–FetO slag (with optional Al2O3 addition) was reacted with liquid Pb–Sn alloy in a pure Fe crucible at 1573 K for 5 h while blowing the CO–CO2 mixture. From the activity coefficients of Sn, Pb, and Fe oxides in the slag, which were calculated using the PCO/PCO2 ratio during heating and the chemically analyzed compositions of slag and metal, their behaviors in slag/metal reaction were discussed. The order of reducibility was PbO > SnO >> FetO. Finally, it was suggested from the thermodynamic and industrial smelting perspectives that the slag condition favorable to SnO reduction is high basicity, around 50 mass% FetO, and low Al2O3 content. Graphical Abstract

show abstract

The Distribution of Sn Between CaO–CuOx–FeOy–SiO2 Slag and Copper Metal at 1300 °C

Cited by 5 publications

References 8 publications

Behavior of Tin and Antimony in Secondary Copper Smelting Process

Behavior of Tin and Antimony in Secondary Copper Smelting Process

Behavior of Ga, In, Sn, and Te in Copper Matte Smelting

Measurement of SnO Activity Coefficient in CaO–SiO2–FetO–Al2O3 Slag Saturated with Fe

Contact Info

Product

Resources

About