KnE Materials Science
ISSN: 2519-1438
The latest conference proceedings on physical materials, energy materials, electrical materials.
Best Practices of Russia and Finland in Extracting REE from Fertilizer Waste
Published date: Sep 03 2017
Journal Title: KnE Materials Science
Issue title: Technogen-2017
Pages: 168-173
Authors:
Abstract:
In the production of fertilisers and commodity metals large amounts of stabilised waste is generated. Conventionally, manufacturing is targeted at the recovery of economically and technically most attractive key elements while the inorganic waste stream will gather all the other added-value chemical quantities. For example, substantial amounts of rare earth metals, which are increasingly used in various modern technologies including cleantech and photonics are present in phosphogypsum, the voluminous waste of the worldwide fertiliser industry. The waste heaps, while generally stabilised against weathering, appear usually granular or even as powder-like fines. Thus they represent a readily comminuted raw material for innovative mechanical, hydrometallurgical, biohydrometallurgical and pyrometallurgical techniques to recover considerable amounts of valuable metals and metal concentrates.
Keywords: phosphogypsum, fertilisers hydrometallurgy, rare earth metals, leaching, sorption, anaerobic, sulphides
References:
[1] V. Yahorava, V. Bazhko, G. Khosa, A. du Preez, and R. Mottay, 2012, Recovery of rare earths from phosphogypsum: development of the flowsheet up to refinery.
[2] S. Kirillov, Y. Kirillov, R. Pajarre, V. Rychkov, and P. Koukkari, Recovery of Rare Earth Elements and Scandium as Side Products of Uranium and Phosphate Mining, Konferens i Mineralteknik, vol. 2.- 3.2, Sweden, Lulea, 2016.
[3] P. Koukkari, J. Mäkinen, M. Bomberg, A. Lehtonen, M. Arnold, and J. Mäkinen, “Method for recovering rare earth metals from waste sulphates,” FI B, Article ID 125550, pp. 30–11, 2013.
