Title

ZERO WASTE STEEL WORKS – A COMMERCIALLY ATTRACTIVE WAY OF RECYCLING BY-PRODUCTS

ZERO WASTE STEEL WORKS – A COMMERCIALLY ATTRACTIVE WAY OF RECYCLING BY-PRODUCTS

Authorship

FLEISCHANDERL, A.; GENNARI, U.; GEBERT, W.

FLEISCHANDERL, A.

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GENNARI, U.

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GEBERT, W.

I am this author

DOI

10.5151/2594-357x-34Red-1221-1230

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Abstract

Large quantities of solid by-products are generated by the steel industry and other important activity sectors in Europe (power plants, car dismantling companies, urban incinerators) with no or very limited potential for direct recovery. In the frame of a multi-national project supported by the European Union, a consortium has been created to develop a treatment process able to turn these by-products into valuable metallic and mineral products. VAI has been responsible for the design, erection and start-up of the pilot plant for the new metallurgical process and for the execution of the test campaigns, with the targets defined together with the partners. Up to now, 10 campaigns comprising 67 heats have been performed successfully. By-products from C-Steel and stainless steel plants, as well as fly ash and auto shredder residues, have been used and defined products such as hydraulic binders for cement, metallurgical powders for D-S practice and recycled metal phase have been produced. The mineral products were positively assessed under industrial conditions. Results from cement tests and secondary metallurgy are reported, as well as a detailed characterization. The economic value of the products, credits from avoiding dumping and significant savings on CO₂ emissions make the new process economically very attractive.

Large quantities of solid by-products are generated by the steel industry and other important activity sectors in Europe (power plants, car dismantling companies, urban incinerators) with no or very limited potential for direct recovery. In the frame of a multi-national project supported by the European Union, a consortium has been created to develop a treatment process able to turn these by-products into valuable metallic and mineral products. VAI has been responsible for the design, erection and start-up of the pilot plant for the new metallurgical process and for the execution of the test campaigns, with the targets defined together with the partners. Up to now, 10 campaigns comprising 67 heats have been performed successfully. By-products from C-Steel and stainless steel plants, as well as fly ash and auto shredder residues, have been used and defined products such as hydraulic binders for cement, metallurgical powders for D-S practice and recycled metal phase have been produced. The mineral products were positively assessed under industrial conditions. Results from cement tests and secondary metallurgy are reported, as well as a detailed characterization. The economic value of the products, credits from avoiding dumping and significant savings on CO₂ emissions make the new process economically very attractive.

Keywords

zero waste, steel by-products, recycling, metallurgy, sustainability

zero waste, steel by-products, recycling, metallurgy, sustainability