Abstract

GUTIERREZ BERNAL, Jesús Manuel et al. Using ultrafine particles from a coal washing plant in metallurgical coke production. Ing. Investig. [online]. 2011, vol.31, n.1, pp.56-64. ISSN 0120-5609.

Blending ultrafine particles from a coal washing plant was studied for coke production by briquetting using 6%w coal tar as binder. The ultrafine coal particles were characterised and a pilot coking test was made in a Koppers´ furnace. Coke quality was evaluated by proximate analysis, stability (micum 10 and micum 40), coke reactivity index (CRI) with CO₂ and the coke´s mechanical strength after reaction with carbon dioxide (CSR index). Briquetting results showed that was possible to obtain coke having 19.0 % CRI and 75.6% CSR, these being the characteristics required in metallurgical processes.

Keywords : coke; ultrafine coal particles; briquetting.

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