NDLI: Optimization of By-Products Reuse in the Steel Industry: Valorization of Secondary Resources with a Particular Attention on Their Pelletization

Content Provider	Springer Nature Link
Author	Matino, Ismael Colla, Valentina Branca, Teresa Annunziata Romaniello, Lea
Copyright Year	2016
Abstract	An improvement of by-products reuse contributes to reduce the environmental impact of industries and to increase their competitiveness. Within the steel production cycle, several by-products are produced: slags, sludges, scales, dusts. Some of them are directly suitable to the internal reuse, other ones can be separated in fractions that can be used internally or sold for external use. This paper shows an analysis focused on the optimization of by-products reuse in an Italian Integrated Steelworks with a particular attention on the internal recycling in the pelletization process. Starting from previous studies on the selection of suitable by-products and treatments, the paper presents, firstly, the development of a superstructure model using reMIND$^{®}$ software in order to find optimal solutions, considering quality and environmental constraints, and to minimize operating costs. Furthermore, the evaluation and the optimization through laboratory or simulation tests of possible mixtures of by-products to be used in pelletization is also discussed. By-product mixtures were evaluated to the aim of achieving good pellets formation, according to the number, size of pellets and the compression test results. This study shows that a particular scenario is capable to jointly reduce costs and environmental impact as well as to obtain high quality pellets that can maximize the internal reuse in sinter plant of by-products in a particular” winning formula” (BOF slag 65 wt%, BOF sludge 27 wt%, dolime 1 wt%, cement 7 wt%). These preliminary results show that a good by-products management could provide important advantages to the companies by contributing to the “zero waste” target.
Starting Page	2569
Ending Page	2581
Page Count	13
File Format	PDF
ISSN	18772641
Journal	Waste and Biomass Valorization
Volume Number	8
Issue Number	8
e-ISSN	1877265X
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-11-14
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	By-product recovery Waste management Basic oxygen furnace slag Process modelling Process optimization Engineering Environment Renewable and Green Energy Industrial Pollution Prevention Waste Management/Waste Technology Environmental Engineering/Biotechnology
Content Type	Text
Resource Type	Article
Subject	Waste Management and Disposal Environmental Engineering Renewable Energy, Sustainability and the Environment

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