ORALS
SESSION:
IronFriPM2-R8
| Usui International Symposium on Advanced Sustainable Iron and Steel Making (7th Intl. Symp. on Advanced Sustainable Iron and Steel Making) |
| Fri Oct, 25 2019 / Room: Ambrosia B (77/RF) | |
| Session Chairs: Taichi Murakami; Cyro Takano; Session Monitor: TBA |
16:45: [IronFriPM211] Keynote
Method for measuring charcoal bulk compression strength Solon
Tagusagawa1 ; Martim H.n.
Kurauchi
2 ;
Cyro
Takano3 ; Tiago
Ribeiro
4 ; Marcelo
Mourao
3 ; Cesar Yuji
Narita
5 ;
1USP - Universidade De Sao Paulo, Sao Paulo, Brazil;
2University of Sao Paulo Polytechnic School, Sao Paulo, Brazil;
3University of Sao Paulo, Sao Paulo, Brazil;
4Institute for Technological Research, Sao Paulo, Brazil;
5Polytechnic School of the University of Sao Paulo, Sao Paulo, Brazil;
Paper Id: 385
[Abstract] Charcoal is an existing alternative to the use of coal and coke in the metallurgical industry, but it has inherently low mechanical strength. The existing methods to evaluate charcoal compression strength rely on preparing test specimens free of defects and compress it in the direction of the fibres. Since charcoal is anisotropic, these tests may not reveal the behaviour of charcoal, as a whole, when suffering compressive loads. As a consequence, such approach may not relate to industrial conditions, where the load on charcoal is not only on the direction of the fibres. This paper proposes a new method to quantify the effects of applying a compressing load on randomly distributed bulk charcoal, simulating what would be expected in industrial conditions, such as in a blast furnace, rather than the analysis of individual pieces of charcoal. It is shown that the results are normally distributed when analysed by means of the friability index proposed by ASTM D440.
References:
(1) The Art, Science, and Technology of Charcoal Production. Antal Jr., Michael Jerry e Gronli, Morten. 42, s.l. : Ind. Eng. Chem. Res., 2003.
(2) Análise do processo de produção de carvão vegetal para siderurgia. Ribeiro, Tiago R., et al., et al. Vila Velha : Associação Brasileira de Metalurgia, Materiais e Mineração, 2011. ISSN: 2176-3135.
(3) Mechanical properties of acacia and eucalyptus wood chars. Kumar, M, Verma, B. B. e Gupta, R. C. 21, s.l. : Energy Sources, 1999. ISSN: 0090-8312.
(4) Bulk compression characteristics of straw and hay. Nona, Kenny D., et al., et al. 118, s.l. : Biosystems Engineering, 2014. ISSN: 1537-5110.
