Heap Leaching of Minerals: Current Applications and New Developments

A special issue of Minerals (ISSN 2075-163X). This special issue belongs to the section "Mineral Processing and Extractive Metallurgy".

Deadline for manuscript submissions: closed (30 November 2020) | Viewed by 2982

Special Issue Editor


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Guest Editor
Mineral Resources, The Commonwealth Scientific and Industrial Research Organisation (CSIRO), Canberra, Australia
Interests: heap leaching; lixiviant chemistry; bioleaching and bio-oxidation; solvent extraction; mineralogy

Special Issue Information

Dear Colleagues,

Heap leaching is an established mineral processing technology, utilised to economically extract base and precious metal commodities. The application of heap leaching has benefited from improvements in heap design and engineering, coupled with a greater understanding of fundamental parameters, including leach chemistry, mineralogy, microbiological catalysis, hydrodynamics, gas-flow, heat generation and particle interaction phenomena. 

The intent of this Special Issue is to inform the wider technical community of recent developments in the application of heap leaching to various commodity resources (including waste products). The application of new technology or studies upon established systems that will improve heap leaching are also welcomed to facilitate improvements in industrial scale processing.

Dr. Denis Shiers
Guest Editor

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Keywords

  • heap leaching
  • heap engineering/control
  • lixiviant (bio)chemistry
  • ore and gangue mineralogy
  • modelling

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Published Papers (1 paper)

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Research

11 pages, 765 KiB  
Article
Assessment of the Possibility of Hydrometallurgical Processing of Low-Grade Ores in the Oxidation Zone of the Malmyzh Cu-Au Porphyry Deposit
by Arthur Sekisov and Anna Rasskazova
Minerals 2021, 11(1), 69; https://doi.org/10.3390/min11010069 - 12 Jan 2021
Cited by 14 | Viewed by 2563
Abstract
The geochemical features of the ores present in the oxidation zone of the gold-copper Malmyzh mineral deposit are characterized. This deposit is located in the the Nanaian region of the Khabarovsk Territory in the Russian Federation, and a technological assessment of ores present [...] Read more.
The geochemical features of the ores present in the oxidation zone of the gold-copper Malmyzh mineral deposit are characterized. This deposit is located in the the Nanaian region of the Khabarovsk Territory in the Russian Federation, and a technological assessment of ores present was carried out. The initial gold content in the oxidized ore is 0.1–1.2 ppm, and the leachability of gold from different size fractions by hot cyanide revealed the fact that the ore is not refractory and characterized by increased cyanide consumption. The results demonstrated a high gold content in fine size fractions. Different leaching reagents were applied for oxidized ore testing. These reagents were used both for oxidative pretreatment and leaching process. Activation of solutions was carried out by electrolysis and UV radiation. Different reagent combinations were tested in laboratory with the highest gold recovery (94%) provided by the chloride system with peroxide-sulfuric pretreatment of the oxidized ore. The same reagent combination resulted in 91–94% gold recovery during the column leaching of crushed (−10 mm) ore. Full article
(This article belongs to the Special Issue Heap Leaching of Minerals: Current Applications and New Developments)
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