| 项目编号: | NE/L00240X/1
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| 项目名称: | Cobalt: the roles of Geology, Geomicrobiology and Geometallurgy in its mineral formation and recovery (CoG3) |
| 作者: | David Barrie Johnson
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| 承担单位: | Bangor University
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| 批准年: | 2012
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| 开始日期: | 2013-01-09
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| 结束日期: | 2014-15-06
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| 资助金额: | GBP68641
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| 资助来源: | UK-NERC
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| 项目类别: | Research Grant
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| 国家: | UK
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| 语种: | 英语
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| 特色学科分类: | Geosciences 
; (40%)
; Materials Processing 
; (10%)
; Microbial sciences 
; (15%)
; Process engineering 
; (15%)
; Terrest. & freshwater environ. 
; (20%)
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| 英文摘要: | Cobalt (Co) has been highlighted as a metal of great strategic and economic importance, both by the NERC Security of Mineral Resources (as an "E-tech" element) and by the European Union's Raw Materials Initiative (as a "Critical element"). Around 55,000 tonnes of cobalt are produced globally each year, though less than 0.1% of this within Europe. In contrast, EU countries use ~30% of global cobalt production. However, there are large untapped reserves of cobalt within Europe, such as the black shale ores in Poland, which are mined for copper, and in Co-bearing nickel laterite ores in Greece, Macedonia and Kosovo. Cobalt is not recovered from either of these. One of the primary difficulties facing cobalt recovery from copper ores lies in the flotation of cobalt when using conventional process for copper flotation. In order to recover cobalt, increasingly complicated chemical additives are being considered. The toxicity of these chemicals decreases the potential environmental friendliness of the process, both in terms of volatilisation and leakage into the surroundings. Lateritic (and other oxidized Co-bearing ores, such as marine nodules) also pose significant technical challenges in developing economically-viable and environmentally-benign approaches for extracting this metal, though recent advances, e.g. in bio-processing ores and mineral concentrates, have highlighted potential new techniques that could be utilized.
There is a need to identify not only new extraction and recovery processes for cobalt, but also to understand how cobalt minerals and ores are formed and how the metal behaves in the earth's crust. To facilitate this, a consortium of internationally-acknowledged researchers encompassing a wide range of scientific disciplines has formed, to carry out a comprehensive study of cobalt. This will include investigating how this metal behaves in geological materials and its behaviour in the environment, and also to devise new "green" approaches for extracting cobalt from recalcitrant ores and recovering it from process liquors. These are highly intertwined aspects, for example understanding how and why cobalt establishes residence in silicate, sulfide and oxide phases is an important first step to the design of novel extraction methodologies.
Recent reports in the literature, often authored by members of the consortium, have highlighted new (bio)technologies that can be harnessed in the current proposal. For example, the journal "Scientific American" recently (December 2011) highlighted the bio-processing options that will be used in the project as one of "10 world-changing ideas". The project has already attracted great interest and support from industries and research organisations involved in metal mining. Although focused on cobalt, much of the research to be undertaken would be generic and have application in parallel studies with other valuable metals and metal ores. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/102566
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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| Recommended Citation: | |
David Barrie Johnson. Cobalt: the roles of Geology, Geomicrobiology and Geometallurgy in its mineral formation and recovery (CoG3). 2012-01-01.
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