| Revista: | Latin American applied research |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000372231 |
| ISSN: | 0327-0793 |
| Autores: | Nascimento, D.R1 Pereira, R.D1 Lima, R.M.F1 |
| Instituciones: | 1Universidade Federal de Ouro Preto, Departamento de Engenharia de Minas, Ouro Preto, Minas Gerais. Brasil |
| Año: | 2013 |
| Volumen: | 43 |
| Número: | 2 |
| Paginación: | 189-192 |
| País: | Argentina |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | Due to its low cost compared with hydroxamate and sulphonate, sodium oleate is em-ployed in direct flotation of low-grade or waste iron ore. However, depressants are being studied. This work shows the influence of the depressant sodium silicate on hematite and quartz flotation with sodium oleate as a collector. Microflotation tests were per-formed in Hallimond tube at pH values 7 and 9, and the zeta potentials of both minerals were determined in the absence and presence of sodium silicate. The sodium silicate was a more efficient depressant for quartz than for hematite, and a selective separation between the two minerals is possible for low reagent concentrations. The zeta potentials of both minerals were shifted to lower values due the specific adsorp-tion of anionic species of sodium silicate onto their surfaces |
| Disciplinas: | Ingeniería |
| Palabras clave: | Ingeniería de minas, Hematita, Cuarzo, Flotación, Silicato de sodio |
| Keyword: | Engineering, Mining engineering, Hematite, Quartz, Floating, Sodium silicate |
| Solicitud del documento | |
