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| Main Author: | |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidad Nacional de Colombia
2018
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| Online Access: | https://www.redalyc.org/articulo.oa?id=49657889021 https://www.redalyc.org/journal/496/49657889021/ https://www.redalyc.org/journal/496/49657889021/html/ https://www.redalyc.org/journal/496/49657889021/49657889021.epub https://www.redalyc.org/journal/496/49657889021/movil |
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Table of Contents:
- Flash flotation of free coarse gold using dithiophosphate and dithiocarbamate as a replacement for traditional amalgamation Moisés Oswaldo Bustamante Rúa Doria Maria Naranjo Gómez Alan José Daza Aragón Pablo Bustamante Baena Julián David Osorio Botero Ingeniería amalgamation ditiocarbamato Flash flotation dithiophosphate free coarse gold This article develops the flash flotation as an alternative method to gravitational separation and amalgamation in order to achieve a greater recovery of coarse native gold through selective hydrophobicity. This method is directly applicated in the discharge of the mills and / or classifiers to recover free and coarse gold; which size is superior than approximately 150 micrometers. Physicochemical characterization of the free gold surfaces was carried out by the measurements of contact angle, Z potential (ZPC) and atomic force microscopy (AFM). The reagent was determined by specific conditions (basic pH, no requirements of an activator and a flotation time of the order of 2 minutes) achieving a superior recovery than 90%. In this case, the isoamyl dialkyl dithiophosphate collector (AERO 3501®) was the reagent which basically got the best results. 2018 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49657889021 https://www.redalyc.org/journal/496/49657889021/ https://www.redalyc.org/journal/496/49657889021/html/ https://www.redalyc.org/journal/496/49657889021/49657889021.epub https://www.redalyc.org/journal/496/49657889021/movil 10.15446/dyna.v85n205.69882 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.205 Vol.85