Properties of Na2O–SiO2 slags in Doré smelting
| Autor: | Hugh O’Brien, E. Niemi, Lassi Klemettinen, Pekka Taskinen, M. Valkama, Katri Avarmaa |
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| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Materials science
Alloy chemistry.chemical_element Sodium silicate 02 engineering and technology engineering.material Microanalysis 020501 mining & metallurgy Rhodium chemistry.chemical_compound phase equilibria ta216 Mechanical Engineering Metallurgy Trace element General Chemistry Geotechnical Engineering and Engineering Geology Copper Anode slime Anode precious metal 0205 materials engineering chemistry Smelting engineering Economic Geology distribution coefficient platinum group element |
| Zdroj: | MINERAL PROCESSING AND EXTRACTIVE METALLURGY REVIEW. 39(2):125-135 |
| ISSN: | 0882-7508 |
| Popis: | Solubilities of metals in sodium silicate slags have been studied at 1000–1300°C in oxygen pressures of P(O2) = 10−4 to 0.5 atm, in Dore alloy smelting of copper anode slimes. The boundary conditions for the slags were silica saturation, magnesia saturation with about 10 wt% and without BaO. The trace elements studied were copper, gold, palladium, rhodium, and tellurium. The analytical methods used in the phase composition analyses of equilibrated samples, quenched in brine, were electron probe X-ray microanalysis and laser ablation-inductively coupled plasma-mass spectrometry. Thermodynamic features of the slags, trace element solubilities with the given constraints, and their oxidation mechanisms were determined. The data allow optimizing the anode slime-smelting for the metals’ maximum recovery in sodium silicate fluxing. |
| Databáze: | OpenAIRE |
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