It is shown that zinc-bearing sludge from ferrous metallurgical operations can be recycled in such a way as to concentrate the zinc to a level that makes it advantageous to extract. The use of wastes from alumina production – red mud – in the production and smelting of sinter or pellets obtained from charge materials that contain zinc minimizes the release of zinc-bearing dust into the atmosphere by increasing the mechanical and hot strength of the agglomerated product.
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Tatsienko, P.A., Utkov, V.A. Combined use of bank sludge formed in ferrous and nonferrous metallurgical operations. Metallurgist 52, 605–608 (2008). https://doi.org/10.1007/s11015-009-9100-0
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DOI: https://doi.org/10.1007/s11015-009-9100-0