| Journal: | Latin American applied research |
| Database: | PERIÓDICA |
| System number: | 000372231 |
| ISSN: | 0327-0793 |
| Authors: | Nascimento, D.R1 Pereira, R.D1 Lima, R.M.F1 |
| Institutions: | 1Universidade Federal de Ouro Preto, Departamento de Engenharia de Minas, Ouro Preto, Minas Gerais. Brasil |
| Year: | 2013 |
| Volumen: | 43 |
| Number: | 2 |
| Pages: | 189-192 |
| Country: | Argentina |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, aplicado |
| English abstract | 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 |
| Disciplines: | Ingeniería |
| Keyword: | Ingeniería de minas, Hematita, Cuarzo, Flotación, Silicato de sodio |
| Keyword: | Engineering, Mining engineering, Hematite, Quartz, Floating, Sodium silicate |
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