The Behaviour of Lead in Silica-Saturated, Copper Smelting Systems

Kaiura, G. H.; Watanabe, Keiji; Yazawa, Akira

doi:10.1179/cmq.1980.19.2.191

Cited by 32 publications

(21 citation statements)

References 4 publications

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“…x ϭ (wt pct X in slag)/{wt pct X in matte} [1] and this was determined from the chemical analysis of the slag and matte phases. As shown in Figure 11, the distribution ratio of silver It is noted that the dependency of L s/m Ag on p SO 2 is very small.…”

Section: Distribution Ratio Of Minor Elements Between Slag and Mattementioning

confidence: 99%

“…The mattes are considered to have common constituents of Cu 2 S, FeS, and FeO X . [1] tainty of the chemical analysis of the samples. The solubility of sulfur in the slags, as shown in Figure 6, is a maximum of about 4 wt pct at a matte grade of 0 wt pct Cu and decreases simply with increasing matte grade.…”

mentioning

confidence: 99%

“…The copper content in the matte the equation of 1/2S 2 (g) ϩ O 2 (g) ϭ SO 2 (g). Although the was determined by titration with ethylenediaminetetraacetic mixture of CO 2 -H 2 -SO 2 -Ar gas [1] be used to control acid (EDTA). Sulfur was analyzed gravimetrically after prep SO 2 , p S 2 and p O 2 , its use is restricted to systems at low cipitation as barium sulfate.…”

mentioning

confidence: 99%

“…mainly composed of iron oxide and SiO 2 with the additional A series of experimental studies [1][2][3][4] have already been components of CaO, Al 2 O 3 , and MgO. The MgO content of conducted in a limited range of conditions for p SO 2 around the present slag is considerably higher than that of the indus-10.1 kPa, which corresponds to smelting with air blowing.…”

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confidence: 99%

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Phase equilibrium and minor element distribution between FeO x -SiO2-MgO-based slag and Cu2S-FeS matte at 1573 K under high partial pressures of SO2

Roghani

Takeda

Itagaki

2000

Metall Mater Trans B

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As part of a fundamental study of copper smelting processes using oxygen or oxygen-enriched air as a blowing gas, phase equilibrium and distribution of minor elements between copper matte and SiO 2 -saturated FeO X -SiO 2 -MgO-based slag containing 5 to 10 wt pct MgO have been investigated at 1573 K under the SO 2 partial pressures of 10.1, 50.7, and 101.3 kPa. The copper and sulfur solubilities in the slag were found to be independent of p SO 2 when the matte grade was specified, and this behavior was ascribed to the constancy of ( p O 2 /p S 2 ) against p SO 2 at a given matte grade. When the distribution ratio of a minor element (X) between the slag and matte phases was defined as L s/m x ϭ (wt pct X in slag)/{wt pct X in matter}, L s/m x for arsenic, antimony, and bismuth at a given matte grade increased with increasing p SO 2 . On the other hand, the distribution ratio of silver at a given matte grade was almost constant against p SO 2 .

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Section: Distribution Ratio Of Minor Elements Between Slag and Mattementioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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Phase equilibrium and minor element distribution between FeO x -SiO2-MgO-based slag and Cu2S-FeS matte at 1573 K under high partial pressures of SO2

Roghani

Takeda

Itagaki

2000

Metall Mater Trans B

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“…This is ascribed to the difference in the oxygen potential between the two Park, Yoichi Takeda and Akira Yazawa equilibrium conditions, i.e. at the same matte grade the oxygen potential of the matte-slag equilibrium is much larger than that of the copper-matte-slag equilibrium, as well understood from the sulfur-oxygen potential diagram (8). Thus the predominant dissolved form of lead in slag can be estimated to be an oxidic species.…”

Section: Distribution Equilibrium Of Leadmentioning

confidence: 80%