Rougher flotation of copper sulphide ore using biosolids and humic acids

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dc.contributor.authorReyes-Bozo, Lorenzo
dc.contributor.authorHerrera-Urbina, Ronaldo
dc.contributor.authorSaez-Navarrete, Cesar
dc.contributor.authorOtero, Alfonso F.
dc.contributor.authorGodoy-Faundez, Alex
dc.contributor.authorGinocchio, Rosanna
dc.date.accessioned2025-01-21T00:00:00Z
dc.date.available2025-01-21T00:00:00Z
dc.date.issued2011
dc.description.abstractIn the quest of new, less hazardous, and more ambient-friendly froth flotation reagents, the use of biosolids or humic acids as both collector and frother for the concentration of copper sulphide ores was investigated. Rougher flotation tests were conducted in Denver cells on a laboratory scale, and metallurgical indicators such as copper recovery, copper concentrate grade, and concentration and enrichment ratios were compared with those obtained under similar conditions but using conventional collectors and frothers for the industrial flotation of copper sulphide ores. With a dosage of 10% (w/w) biosolids, copper recovery and grade were 26% and 0.81%, respectively. The copper recovery and grade obtained with 1.5% (w/w) salt of humic acids were 29.7% and 3.5%, respectively. A significantly higher copper recovery (65.1%) was obtained with conventional industrial collectors and frothers, but the grade was also low (3.1% Cu). With the same dosage of humic substances, humic acid show that the flotation rate constant was significantly higher (0.2 min(-1)) than that obtained with the same dosage of biosolids (0.09 min(-1)). These results indicate that humic acids have more affinity than biosolids for copper-containing mineral species, and also show that biosolids and humic acids could be used as both collector and frother in the sulphide mineral concentration process by froth flotation. Because the distribution of iron in the concentrate obtained with biosolids is highest, these materials seem to have more affinity for pyrite. (C) 2011 Elsevier Ltd. All rights reserved.
dc.description.funderNational Commission for Scientific and Technological Research (Comision Nacional de Investigacion Cientifica y Tecnologica, CONICYT) of the Chilean Government
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.mineng.2011.08.014
dc.identifier.issn0892-6875
dc.identifier.urihttps://doi.org/10.1016/j.mineng.2011.08.014
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/95320
dc.identifier.wosidWOS:000297000700010
dc.issue.numero14
dc.language.isoen
dc.pagina.final1608
dc.pagina.inicio1603
dc.revistaMinerals engineering
dc.rightsacceso restringido
dc.subjectFlotation collectors
dc.subjectFlotation froths
dc.subjectFlotation reagents
dc.subject.ods06 Clean Water and Sanitation
dc.subject.odspa06 Agua limpia y saneamiento
dc.titleRougher flotation of copper sulphide ore using biosolids and humic acids
dc.typeartículo
dc.volumen24
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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