Improving reductibility of iron ore pellets by optimization of physical parameters

Pal, J and Ghorai, S and Ammasi, A and Hota, S K and Koranne, V M and Venugopalan, T (2017) Improving reductibility of iron ore pellets by optimization of physical parameters. Journal of Mining and Metallurgy Section B- Metallurgy, 53(1) (IF-0.804). pp. 37-46.

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Reducibility of iron bearing material is an important property which represents its suitability of reduction in iron making furnaces. It has direct influence on improving productivity and lowering energy consumption in iron making process. The reducibility of iron ore pellets of a specific chemistry can be improved by the optimization of physical parameters such as induration temperature, improving size distribution of fines, improving apparent porosity etc. In this study, the reference pellet is prepared in a typical plant condition and the properties of the reference pellet are considered as base value to improve reducibility index (RI) maintaining other properties at the acceptable limit without altering pellet chemistry. Optimization of induration temperature at the 1250-1275 degrees C shows around 74 % RI, which is 5 points more than the base value of 69.5 %. Furthermore, on optimizing additives size, such as limestone fines and anthracite coal fines at -350 mesh and induration temperature of 1250-1275 degrees C, RI is improved to 77 %, i.e., 8 points improvement is achieved with respect to the base value.

Item Type:Article
Official URL/DOI:DOI: 10.2298/JMMB151206014P
Uncontrolled Keywords:Iron ore pellets
Divisions:Material Science and Technology
ID Code:7597
Deposited By:Sahu A K
Deposited On:18 Aug 2017 09:53
Last Modified:18 Sep 2017 17:27
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