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Open AccessArticle

Briquetting of Wastes from Pulp and Paper Industries by Using AOD Converter Slag as Binders for Application in Metallurgy

KTH Royal Institute of Technology, 100 44 Stockholm, Sweden
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Materials 2019, 12(18), 2888; https://doi.org/10.3390/ma12182888
Received: 20 June 2019 / Revised: 23 August 2019 / Accepted: 3 September 2019 / Published: 6 September 2019
(This article belongs to the Special Issue Environmentally Friendly Renewable Materials)
A number of carbon-rich (containing up to 47 wt% C) and lime-rich (containing up to 96 wt% of CaO-compounds) waste products from the pulp and paper industries can be used in iron and steel industry as fuels and slag formers for various metallurgical processes such as blast furnaces (BF), cupola furnaces (CF), argon oxygen decarburization (AOD) converters and electric arc furnaces (EAF). In most cases, these wastes consist of different size powders. In order to facilitate loading, transportation and charging of these powder wastes, briquetting is required. In this study, a pulverized AOD slag was tested as a binder component for briquetting of CaO-containing wastes (such as mesa, lime mud and fly ash) from pulp and paper industries. Moreover, mechanical testing of the possibilities for loading, transportation and unloading operations were done, specifically drop test trials were done for briquettes with different chemical compositions and treatments such as heating and storage. The results showed that an addition of 10–20% of AOD slag as a binder component followed by heat-treatment at 850 °C significantly improved the mechanical properties of the CaO-containing briquettes. An application of these briquettes will significantly reduce the consumption of natural resources (such as nature lime) in the metallurgical processes. Moreover, it can reduce the landfill area of wastes from pulp and paper industries, which is important from an environmental point-of-view. View Full-Text
Keywords: secondary raw materials; recirculation of wastes; metallurgical briquettes; resource saving secondary raw materials; recirculation of wastes; metallurgical briquettes; resource saving
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MDPI and ACS Style

Jarnerud, T.; Karasev, A.V.; Jönsson, P.G. Briquetting of Wastes from Pulp and Paper Industries by Using AOD Converter Slag as Binders for Application in Metallurgy. Materials 2019, 12, 2888. https://doi.org/10.3390/ma12182888

AMA Style

Jarnerud T, Karasev AV, Jönsson PG. Briquetting of Wastes from Pulp and Paper Industries by Using AOD Converter Slag as Binders for Application in Metallurgy. Materials. 2019; 12(18):2888. https://doi.org/10.3390/ma12182888

Chicago/Turabian Style

Jarnerud, Tova; Karasev, Andrey V.; Jönsson, Pär G. 2019. "Briquetting of Wastes from Pulp and Paper Industries by Using AOD Converter Slag as Binders for Application in Metallurgy" Materials 12, no. 18: 2888. https://doi.org/10.3390/ma12182888

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