Abdelrahim, A., Nguyen, H., Omran, M. et al. Development of Cold-Bonded Briquettes Using By-Product-Based Ettringite Binder from Ladle Slag. J. Sustain. Metall. 8, 468–487 (2022). https://doi.org/10.1007/s40831-022-00511-1
Development of cold-bonded briquettes using by-product-based ettringite binder from ladle slag
|Author:||Abdelrahim, Ahmed1; Nguyen, Hoang2; Omran, Mamdouh1;|
1Process Metallurgy Research Unit, University of Oulu, Pentti Kaiteran Katu 1, 90014, Oulu, Finland
2Fibre and Particle Engineering Research Unit, University of Oulu, Pentti Kaiteran Katu 1, 90014, Oulu, Finland
|Online Access:||PDF Full Text (PDF, 4.3 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2022051635649
|Publish Date:|| 2022-05-16
The recycling of steel plant side streams through cold-bonded briquettes has become quite common. However, Portland cement is mainly used as a binder in the briquettes, contributing significantly to the energy consumption, costs, and carbon footprint associated with the production of cold-bonded briquettes. This paper reports on a more sustainable method for side stream recycling that involves replacing cement with an ettringite-based binder. Ettringite binders develop early high strength and mainly consist of ladle slag, another side stream of the industry. Here, the ettringite-based binder is assessed in terms of its mechanical and thermal properties against a reference briquette made using the conventional technique. Three different briquette types are produced using several side stream materials and varying ettringite-based binder content. Briquettes produced using 15% and higher ettringite-based binder content exhibited excellent mechanical properties within a shorter curing period compared to conventional used binder. Moreover, the ettringite-based binder briquettes exhibited a better swelling behavior to conventional cement briquettes under conditions simulating a blast furnace.
Journal of sustainable metallurgy
|Pages:||468 - 487|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
215 Chemical engineering
This work was supported by Business Finland through SYMMET Project (4236/31/2018), Kvantum institute (University of Oulu), and Academy of Finland [Grant Nos. 322085, 329477 and 326291]. The Finnish Cultural Foundation (Grant No.: 60212342/2021), Walter Ahlström Foundation, and Olvi Foundation are acknowledged for their financial support. Open Access funding provided by University of Oulu including Oulu University Hospital.
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