The existing thermal characteristics of reheating furnace and heavy rail bloom heating technique was evaluated based on temperature measurement with thermal couples and energy balance. Then, the heating technique was optimized. The modified operation shows the annual production of steel for heavy rail is increased from 400 000 t to 500 000 t, the fluctuation of heating temperature is lowered from ±40 °C to ±20 °C, while, temperature difference in bloom section is lessened from 65 °C to less than 45 °C, specific fuel consumption is decreased from 2.147GJ/t to 2.014GJ/t of steel. Furthermore, metal loss due to oxidation is significantly reduced from 1.75 % to 0.72 % to 0.92 %, decarburization depth is lowered from 0.35~0.82 mm to 0.20~0.50 mm, and the rate of overburning is decreased 45 %. The purpose for realizing high productivity, superior quality and lower consumption has been achieved.
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How to cite this article
Chen, Y., Zhou, J. and Mei, D. (2003). 'Study on heating technique for high productivity, superior quality and lower consumption'. SET Proceedings, 2(1), pp. 88-91. https://doi.org/10.65582/set.2003.020
