Use of chelating agents as collectors in the flotation of copper sulfides and pyrite
| Autor: | R.R. Klimpel, G.H. Harris, F. F. Aplan, P.K. Ackerman |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Chalcocite
Chalcopyrite Mechanical Engineering Inorganic chemistry Metals and Alloys chemistry.chemical_element Malachite General Chemistry engineering.material Covellite Geotechnical Engineering and Engineering Geology Copper Copper sulfide chemistry.chemical_compound chemistry Control and Systems Engineering visual_art Materials Chemistry engineering Bornite visual_art.visual_art_medium Pyrite |
| Zdroj: | Mining, Metallurgy & Exploration. 16:27-35 |
| ISSN: | 2524-3470 2524-3462 |
| DOI: | 10.1007/bf03402853 |
| Popis: | Fourteen reagents that are potentially capable of chelating with a metal ion on the surface of the major copper sulfide minerals and pyrite were evaluated for their effectiveness in floating these sulfides. The reagents studied fall into the classes of mercaptobenzole mutations, thiouronium, thionocarbamates, thiourea, imidazole mutations, oximes, hydroxyquinoline and xanthogen formate. The best overall copper sulfide collector was an imidazoline (1-Hy doxy ethyl - 2-Heptadecenyl), but it also proved to be an excellent collector for pyrite. Its potency as a pyrite collector can be reduced by structural alteration, but at some loss in its collecting power for the copper sulfides. The effectiveness of many of these potential collectors can be changed by minor alterations to the collector molecule and, to a lesser extent, by pH adjustment. The general order of mineral floatability with these reagents is chalcopyrite = chalcocite > covellite > bornite » pyrite. The flotation of malachite is generally similar to that of the copper sulfides, indicating the special effectiveness of copper in the crystal lattice for collector attachment. |
| Databáze: | OpenAIRE |
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