Título

Metallurgical Processing of Municipal Waste Incineration Residues for Metals Recovery and Slag Transfer into Cement

Autoria

PETER, PASCHEN,; THEO, KEY,; ALFRED, EDLINGER,

PETER, PASCHEN,

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THEO, KEY,

Eu sou esse autor

ALFRED, EDLINGER,

Eu sou esse autor

DOI

10.5151/2594-5327-49v4-507-514

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Resumo

The Department of Non-Ferrous Metallurgy of the University of Leoben (Austria) and Holderbank Management and Consulting Ltd. (Switzerland) are cooperating in developing the HSR-Process (Holderbank-Smelt-Reduction). Municipal waste incineration residues are metallurgically treated to oxidize iron and aluminum exothermically (forming slag constituents), to reduce and volatilize zinc, and to reduce and transfer into a metallic phase the copper, lead, and tin. Laboratory-scale and pilot plant tests have shown that Cu, Pb, Zn, and Sn contents of 11,000; 2,000; 3,000; and 216 ppm respectively in the municipal waste residue can be reduced to about 200 ppm of Cu, 10 ppm of Pb, 20 ppm of Zn, and <10 ppm of Sn, with removal efficiencies of 98%, >99%, >99%, and >95%, respectively. The optimum product distribution and balance for these four non-ferrous metals is discussed. Part of the work also includes identifying the optimized converter with suitable refractory material and testing the final disposal product for incorporation into pozzolanic cement. The results are satisfying and promising, and a commercial-scale test series is in preparation.

Palavras-chave

Municipal waste, Incineration residues, HSR Process, Metal recovery, Slag, Non-ferrous metallurgy, Cement additives, Environmental processing