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Polyurethane foam as biomass support for removal of thiosalts from flotation process water
(Elsevier, 2021-08-01)
Water recycling is a common practice in sulphide ore processing plants by flotation. Inherent thiosalts accumulation in process water often causes efficiency drop and environmental issues for wastewater discharging. Passive ...
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A novel hydrometallurgical treatment for the recovery of copper, zinc, lead and silver from bulk concentrates
(Elsevier, 2021-03)
Nowadays sulphide ores exploitation is undergoing some troubles, which are hindering the treatment through traditional routes. Bulk flotation followed by a novel hydrometallurgical process can dodge these difficulties. ...
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Valorisation of a flotation tailing by bioleaching and brine leaching, fostering environmental protection and sustainable development
(Elsevier, 2019-10)
Flotation tailing is a problematic mining waste, because contains sulphides that exposed to oxidising conditions generate acidic drainage and the subsequent metal mobilisation. In this study, a flotation tailing produced ...
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Oxygen solubility in copper bioleaching solutions
(Elsevier, 2017-01)
Oxygen is usually the limiting reagent in bio-leaching processes. For this reason, aeration is a key point to take into account when designing such processes, and the oxygen saturation concentration is an important variable ...
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Inhibition of bioleaching processes by organics from solvent extraction
(Elsevier, 1999-12)
The influence of the presence of an organic phase composed of 15% LIX 64 as extractant and kerosene as solvent on ferrous iron bio-oxidation has been studied. The specific bio-oxidation rate decreased as the organic ...
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Causes of inhibition of bioleaching by Cu are also thermodynamic
(Wiley-Blackwell, 2019-01)
BACKGROUND: Cu is an indispensable natural resource for society, as its use is widespread and essential for many technologies. Consequently, worldwide production is around 18×106 tn year−1, and close to 25% is produced by ...
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Recuperación de cobre en escorias mediante biolixiviación indirecta
(CSIC, 2009)
En los procesos pirometalúrgicos, parte del cobre se pierde en la escoria que se genera como residuo del proceso, pudiendo estar presente en ella, en concentraciones muy superiores a las de muchas menas. El cobre se encuentra ...
Artículo
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Ferric leaching of the sphalerite contained in a bulk concentrate: Kinetic study
(Elsevier, 2018-08)
A novel process for the integral treatment of polymetallic sulphide ores is proposed. The process consists of a global flotation, two stages of ferric leaching, the first stage dissolves the sphalerite and the rest of ...
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Operational pH in packed-bed reactors for ferrous ion bio-oxidation
(Elsevier, 2010-09)
The flooded packed-bed bioreactor plays a major role in the field of applications of ferrous ion bio-oxidation. The pH is an important variable in the control of this type of reactor, upon which the functionality of biofilm ...
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The BRISA process as a path for efficient copper recovery from waste PCBs
(Elsevier, 2021)
In the present work, a two-stage biohydrometallurgical process for copper extraction from waste PCBs is developed. The main goal of this study is to check whether to separate the chemical leaching of copper with ferric ...