| Titre : | New collectors for the flotation of unactivated marmatite |
| Auteurs : | Run-qing Liu, Auteur ; Wei Sun, Auteur ; Yue-hua Hu, Auteur |
| Type de document : | Article : texte imprimé |
| Dans : | Minerals engineering (Vol. 23 N° 2, Janvier 2010) |
| Article en page(s) : | pp. 99-103 |
| Note générale : | Génie Minier Métallurgie |
| Langues : | Anglais |
| Index. décimale : | 622 (Industrie minière) |
| Tags : | Sulfide ores Froth flotation Flotation collectors |
| Résumé : |
Three thiophenol collectors were tested for the flotation of marmatite without activation by copper sulfate.
Flotation tests showed that marmatite flotation increased according to the following order: 2-fluoro thiophenol < 2-hydroxy thiophenol < 2-amino thiophenol. All these thiophenols exhibited a better flotation property for marmatite than butyl xanthate. Infrared spectra indicated that 2-amino thiophenol and 2-hydroxy thiophenol chemically adsorbed onto the surface of marmatite. 2-Fluoro thiophenol adsorbed physically onto the surface of marmatite. Quantum chemical calculations indicated that the energy of the highest occupied molecular orbital (HOMO) for 2-amino thiophenol was the highest among the tested collectors and we thus determined that its collecting ability should be the strongest. This agreed with the experimentally determined flotation results. |
| DEWEY : | 622 |
| ISSN : | 0892-6875 |
| En ligne : | http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VDR-4XDKC9K-1&_user=6909337&_coverDate=01%2F31%2F2010&_rdoc=2&_fmt=high&_orig=browse&_srch=doc-info%28%23toc%235989%232010%23999769998%231550282%23FLA%23display%23Volume%29&_cdi=5989&_sort=d&_doca |
