Influence of sulfur-containing ions on selective flotation of copper-nickel ores
| Autor: | G. P. Ponomarev, V. V. Rybas, M. A. Fat'yanova, L. A. Barskii |
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| Rok vydání: | 1986 |
| Předmět: |
chemistry.chemical_classification
Thiosulfate Sulfide Pulp (paper) Inorganic chemistry General Engineering chemistry.chemical_element Beneficiation Geology engineering.material Geotechnical Engineering and Engineering Geology Copper Nickel chemistry.chemical_compound chemistry engineering Potassium bisulfite Sodium sulfite |
| Zdroj: | Soviet Mining Science. 22:310-316 |
| ISSN: | 1573-8736 0038-5581 |
| DOI: | 10.1007/bf02500860 |
| Popis: | 1. During the reorganization of a beneficiation plant with water recycling, a close correlation between the selectivity of flotation of complex copper-nickel sulfide ores and the sulfoxide ion concentration in the recycled water and pulp was found. This necessitated the control of the ionic composition of the pulp. 2. Correction of the ionic composition of the pulp should be achieved by adding a modifier before the copper flotation, to give the optimum thiosulfate: sulfate ratio, i.e., 0.5–0.75. 3. Efficient modifiers for chalcopyrite-cubanite-pyrrhotite ores are sodium sulfite and potassium bisulfite, the consumption of which depends on the seasonal variations in the recycled water quality. 4. The selectivity is better than that achieved in fresh water, and the recovery of nickel into the copper concentrates is reduced by 5–7%, with a consequential increase in the copper: nickel ratio from 12.4 to 15.4–18.4. The index of selectivity is increased by 14–16%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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