Effect of pulp potential on the flotation of a sulfide copper ore
| Autor: | Antônio Eduardo Clark Peres, V. L. L. Andrade, K. L. C. Gonçalves, H. D. G. Turrer |
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| Předmět: |
chemistry.chemical_classification
Chalcocite Sulfide Mechanical Engineering Pulp (paper) Metals and Alloys chemistry.chemical_element General Chemistry engineering.material Geotechnical Engineering and Engineering Geology Digenite Pulp and paper industry Nitrogen Sodium sulfide stomatognathic diseases chemistry.chemical_compound chemistry Control and Systems Engineering Reagent Materials Chemistry engineering Bornite |
| Zdroj: | Scopus-Elsevier |
| Popis: | Surface oxidation of secondary minerals, such as chalcocite, bornite and digenite, present in the Salobo copper ore makes their flotation difficult and requires excessive reagent consumptions. Two possibilities for reducing the collector and fr other additions were investigated. These were sulfidization of the pulp prior toflotation and using nitrogen to replace air in flotation. Sulfidization requires pulp potential control to keep this parameter in the range of 0 to +100 mV, yielding high copper recoveries at minimum collector (90 git) and fr other (60 git) dosages. Flotation with nitrogen reduces the sodium sulfide dosages required to keep the pulp potential within the optimum range. |
| Databáze: | OpenAIRE |
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