Copper losses and thermodynamic considerations in copper smelting
| Autor: | R. Sridhar, Jim M. Toguri, S. R. Simeonov |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
chemistry.chemical_classification
Sulfide Metallurgy Metals and Alloys chemistry.chemical_element Slag Condensed Matter Physics Copper Copper sulfide chemistry.chemical_compound chemistry Copper extraction techniques Mechanics of Materials Flash smelting visual_art Pyrometallurgy Smelting Materials Chemistry visual_art.visual_art_medium |
| Zdroj: | Metallurgical and Materials Transactions B. 28:191-200 |
| ISSN: | 1543-1916 1073-5615 |
| DOI: | 10.1007/s11663-997-0084-5 |
| Popis: | A relationship between copper in slag and copper in matte during copper sulfide smelting has been derived using industrial data from 42 plants employing blast furnaces, reverberatory furnaces, flash furnaces, and Mitsubishi smelting furnaces together with the available thermodynamic equilibrium data for Cu-Fe-S-O, FeO-SiO2, and Cu-Fe-S systems and laboratory slag-matte equilibrium information. A copper smelting diagram showing oxygen potential; sulfur potential; and copper, magnetite, and sulfur contents in slag during the smelting of different grades of copper mattes is developed for mattes containing less than 70 pct copper. The data presented can be used to determine the entrained copper losses in slag. Further, by combining the calculated value of the entrained matte with the corresponding plant data for the sulfur content of the slag, it is possible to derive the dissolved sulfur content of the slag. These calculated values were in excellent agreement with the experimentally determined sulfide capacity of fayalite slags. It is shown that there is no need to assume the presence of dissolved copper sulfide species in industrial slags. The existing equilibrium data that relate the copper content of slags to oxygen potential adequately describe the copper losses in industrial slags. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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