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International Journal of
Research in Advanced Engineering and Technology
ARCHIVES
VOL. 3, ISSUE 3 (2017)
Effect of carbonaceous materials on the physical properties of pellets produced by different methods of addition of materials
Authors
Okiemute Ofuyekpone, Chiemela Amaechi Chimaroke, Ochuko Utu Goodluck
Abstract
The demand for hardened, metallized iron pellets has increased significantly in the last decade alongside with an increase in the use of electric furnaces for producing steel. Metallized iron pellets having a consistent chemical composition and a reasonably stable price are desired as replacement for scrap steel commonly used as part of the charge in electric steelmaking furnaces. These iron ore pellets which are predominantly being used in the blast furnace and direct reduction processes have undergone improvements in other to improve the aforementioned processes and increase efficiency using different methods. This present work which is of different approach whereby different methods of raw materials selection, composition, presence of binding agents, presence of carbonaceous material and firing temperature, affected the quality of pellets produced. Analysis and test results depict that the addition of carbonaceous materials reduced the compressive strength of the fired pellets. The reduction in the compressive strength observed is a consequence of the formation of micro-pores which is a due to the addition of carbonaceous materials. The investigations also revealed that the % apparent porosity of the fired pellets increased with increasing % carbonaceous materials addition. It was also observed that the addition of carbonaceous materials (in increasing order) made the green pellets to be brittle. The result obtained also showed that the presence of carbonaceous materials to the pellets reduced the bulk density. Test result and analysis also revealed that pellets with high porosity have small (low) bulk density.
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Pages:08-14
How to cite this article:
Okiemute Ofuyekpone, Chiemela Amaechi Chimaroke, Ochuko Utu Goodluck "Effect of carbonaceous materials on the physical properties of pellets produced by different methods of addition of materials". International Journal of Research in Advanced Engineering and Technology, Vol 3, Issue 3, 2017, Pages 08-14
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