2010 Fiscal Year Final Research Report
Inhibition of PGM Slag Loss in Copper smelting process
| Project/Area Number |
20560690
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Metal making engineering
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| Research Institution | Iwate University |
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Principal Investigator |
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| Project Period (FY) |
2008 – 2010
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| Keywords | 白金族金属 / 貴金属 / 分配係数 / スラグ / 溶銅 |
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| Research Abstract |
An experimental study was carried out to determine the distribution of precious metals (gold, platinum, palladium, rhodium, and ruthenium) between copper matte and FeO_x-SiO_2 slag phases and the solubility of platinum in FeO_x-SiO_2 slag. The distribution ratios of precious metals were measured at 1300℃ and a fixed partial pressure of SO_2 of 0.1 atm for the matte grades between 40 and 70 mass% of copper. It was found that the distribution ratios are around 10^<-2> for ruthenium, 10^<-3> for gold and platinum and palladium and 10^<-4> for rhodium. In addition, platinum solubility in the FeO_x-SiO_2 slag equilibrated with the Cu-Pt binary alloy has been investigated at 1300℃. The platinum solubility in the slag decreases with decreasing copper content in the slag. The reduction of the copper loss leads inhibition of the PGM loss in the slag.
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