Título

OPTIMAL MIXING AND GRANULATION PROCESS FOR FINE UTILIZATION IN SINTERPLANTS

Autoria

Rimaszéki, Gergö; Hamadeh, Nuri; Meier-Hedde, Andreas; Haas-Witmüss, Richard; Athayde, Maycon; Junior, Fernando Luiz Câmara Campos

DOI

10.5151/2594-357X-28056

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Resumo

Due the fast growing of pig iron and steel in the last years associate with some mineral resources changes (HematiteItabirite), has been checking the sinter feed degradation. The typical sinter feed (0.15;-6.3 mm) has become limited and the rapid growing production resulted in more and more fine ore (< 150 μm) availability in the market. The sinter plant operators are facing several new challenges since the mixing and granulation- and the sintering behavior of the fines containing mixtures often differs from the traditional sinter feed´s behavior. The utilization of fines in the sinter plants might increase the process water consumption required for the mixing and granulation process or even the solid fuel consumption, which effects the operational cost of the plant significantly. The current study presents an overview about Outotec´s laboratory facilities and competence regarding the mixing and granulation of fines in different equipments. The usage of high intensity mixers (HIM) – vertical and horizontal as well – showed to be the most effective, based in cold agglomeration tests in small scale, in case of fine ore handling. Permeability and particle size distribution curves are used to evaluate and demonstrate the efficiency of the different equipments. Outotec´s ”Know-How” with the different type of mixer and the modern laboratory facilities provide an excellent opportunities to optimize the mixing and granulation procedure and utilize up to 100 % pellet feed

 

Palavras-chave

Sinter feed, Pellet feed, Permeability, High intensity mixing

High intensity mixing