A Study for Improved Sinter Quality and Productivity with Optimum Use of Mill Scale and Coke Breeze

S. Sudershan¹ , S.K. Dhua²

Section:Research Paper, Product Type: Journal-Paper
Vol.7 , Issue.4 , pp.37-42, Apr-2021

Online published on Apr 30, 2021

Copyright © S. Sudershan, S.K. Dhua . This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
 

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Abstract :
To improve the sinter quality and productivity of sinter plants of an integrated steel plant, elaborate laboratory studies of various input raw materials were conducted with preparation of green mix with optimum dosage of mill scale and coke breeze. A series of pot sintering tests, using mill scale and coke breeze in various proportion along with the conventional raw materials, were carried out to determine the suitability and optimum blending ratio of raw materials. It was observed that productivity of the sinter machine can be increased by high dosage of mill scale commensurate with use of coke breeze in the green mix. The results of the laboratory experiments indicate that for production of good quality sinter from iron ore fines received from Bolani and Gua mines, in particular, use of mill scale along with high coke rate is very effective. By use of 4.4% of coke breeze and mill scale at the rate of 0.8% of green mix, the specific productivity could be increased by 28% (from base of 1.21 to 1.55 t/m2/hr). The yield and strength (Tumbler Index, TI) of product sinter was also found to be significantly improved from the base experimental figure. The productivity of sinter plant could be achieved to the designed figure by increasing the proportion of mill scale and optimizing the use of solid fuel.

Key-Words / Index Term :
Sinter Machine, productivity, Goethite ore

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