Review of closed water loops with ore sorting and tailings valorisation for a more sustainable mining industry

JOURNAL OF CLEANER PRODUCTION

卷:278

Review

Kinnunen, Paivi¹  Obenaus-Emler, Robert²  Raatikainen, Jukka³  Guignot, Sylvain⁴  Guimera, Jordi⁵  Ciroth, Andreas⁶  Heiskanen, Kari⁷ 

[1] VTT Tech Res Ctr Finland Ltd, Visiokatu 4,POB 1300, Tampere 33101, Finland

[2] Univ Leoben, Franz Josef Str 18, A-8700 Leoben, Austria

[3] Ima Engn Ltd Oy, Luoteisrinne 4 A, Espoo 02770, Finland

[4] Bur Rech Geol & Minieres, 3 Ave Claude Guillemin, F-45060 Orleans, France

[5] Amphos 21, Passeig Garcia Faria 49-51 1 1, Barcelona 08019, Spain

[6] GreenDelta, Kaiderdamm 13, D-14057 Berlin, Germany

[7] Outotec Oyj, Rauhalanpuisto 9, Espoo 02230, Finland

关键词: Closed water loop;    Water recycling;    Geopolymer;    Ore sorting;    Sustainability;    Mining industry;   

DOI  :  10.1016/j.jclepro.2020.123237

来源: Elsevier

【 摘 要 】

Conservation and management of freshwater resources has become a major challenge of this century. In mining, one should be able to control the quantity of water intake, as well as the volume and quality of effluents. When the water loops in mining industry are closed, new methods for water quality control and optimisation at each process step are required, which facilitates also the recovery of additional valuable elements. The tightly closed water cycles necessitate that the tailings are filtered and stacked dry. Geopolymerisation of remaining tailings has the potential to be used for water and oxygen tight covers on the deposited tailings and for mine back-fill use. Detection of ore types and their classification or sorting by their geo-metallurgical properties before and in mill feed have a significant effect on metals recovery and on the process water quality in flotation. The main objective of this paper is to review the progress made towards a new paradigm shift at mine sites to recycle water and valorise tailings for an improved environmental and economic result, and for increased social acceptance of mine operations. (C) 2020 The Author(s). Published by Elsevier Ltd.

【 授权许可】

Free