Treatment for gold ores with high content of carbonaceous matter
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| Format: | Artículo científico |
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Universidad Nacional de Colombia
2020
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| _version_ | 1876465431087153152 |
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| author | Paulo Valdivieso-Bermeo |
| author_facet | Paulo Valdivieso-Bermeo |
| contents | Treatment for gold ores with high content of carbonaceous matter Paulo Valdivieso-Bermeo Isabel Peñaloza José Moreno-Chávez Ingeniería Preg robbing flotation surfactant cyanidation Gold ores associated with carbonaceous matter present several difficulties in their extraction due to the ability of this matter to adsorb the aurocyanide complex from gold pregnant solutions, resulting in low extractions by direct cyanidation. This phenomenon is known as preg-robbing. In the present work, a process to effectively recover Au from a highly carbonaceous ore from Colombia is proposed, combining froth flotation using the organic polymer maltodextrin as a depressant of the carbonaceous matter and a pretreatment with a cationic surfactant (benzalkonium chloride) prior cyanidation in conjunction with activated carbon (CIL). The preg-robbing % (PR%) was reduced from the initial 39.5 % to 3.96 % in the flotation concentrates and a maximum of 87.26 % extraction of Au was achieved during cyanidation. 2020 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49668129021 https://www.redalyc.org/journal/496/49668129021/ https://www.redalyc.org/journal/496/49668129021/html/ https://www.redalyc.org/journal/496/49668129021/49668129021.epub https://www.redalyc.org/journal/496/49668129021/movil 10.15446/dyna.v87n215.84282 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.215 Vol.87 |
| format | Artículo científico |
| id | redalyc_49668129021 |
| institution | Redalyc |
| language | en |
| publishDate | 2020 |
| publisher | Universidad Nacional de Colombia |
| spellingShingle | Treatment for gold ores with high content of carbonaceous matter Paulo Valdivieso-Bermeo Ingeniería Preg robbing flotation surfactant cyanidation Treatment for gold ores with high content of carbonaceous matter Paulo Valdivieso-Bermeo Isabel Peñaloza José Moreno-Chávez Ingeniería Preg robbing flotation surfactant cyanidation Gold ores associated with carbonaceous matter present several difficulties in their extraction due to the ability of this matter to adsorb the aurocyanide complex from gold pregnant solutions, resulting in low extractions by direct cyanidation. This phenomenon is known as preg-robbing. In the present work, a process to effectively recover Au from a highly carbonaceous ore from Colombia is proposed, combining froth flotation using the organic polymer maltodextrin as a depressant of the carbonaceous matter and a pretreatment with a cationic surfactant (benzalkonium chloride) prior cyanidation in conjunction with activated carbon (CIL). The preg-robbing % (PR%) was reduced from the initial 39.5 % to 3.96 % in the flotation concentrates and a maximum of 87.26 % extraction of Au was achieved during cyanidation. 2020 artículo científico 0012-7353 https://www.redalyc.org/articulo.oa?id=49668129021 https://www.redalyc.org/journal/496/49668129021/ https://www.redalyc.org/journal/496/49668129021/html/ https://www.redalyc.org/journal/496/49668129021/49668129021.epub https://www.redalyc.org/journal/496/49668129021/movil 10.15446/dyna.v87n215.84282 en http://www.redalyc.org/revista.oa?id=496 Dyna application/pdf Universidad Nacional de Colombia Dyna (Colombia) Num.215 Vol.87 |
| title | Treatment for gold ores with high content of carbonaceous matter |
| topic | Ingeniería Preg robbing flotation surfactant cyanidation |
| url | https://www.redalyc.org/articulo.oa?id=49668129021 https://www.redalyc.org/journal/496/49668129021/ https://www.redalyc.org/journal/496/49668129021/html/ https://www.redalyc.org/journal/496/49668129021/49668129021.epub https://www.redalyc.org/journal/496/49668129021/movil |