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In Situ Temperature Measurement Across the Sinter Bed

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Abstract

Sinter is one of the important inputs to Blast Furnace. Iron ore sintering process is dominating the agglomeration process in Steel manufacturing sector. To achieve good quality sinter, it is required to know the change in temperature with time for a particular segment of sinter bed. As sintering takes place in moving grate sinter machine this is difficult to achieve in real time. In this paper, in situ temperature measurement across the sinter bed has been carried out  by special arrangement of thermocouples in moving grate. Parameters derived from the time–temperature curve have been related to sinter process parameters. Predictions of sinter strength (tumbler index), coke ratio and other important parameters have been proposed in this paper from time–temperature curve, obtained. Interpolation helps mostly to ascertain the relationship between parameters obtained from temperature time curve and sinter quality. Also, prediction of Burn Through Point by sinter bed temperature was done by two parameters namely regression coefficient and time delay between the peaks of sinter bed temperature and wind box temperatures. Sintering process may be automated from quality point by in situ temperature measurement after prediction with excellent correlation and minimum time delay.

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Acknowledgements

The authors would like to thank Mr. Yatin K. Sawant, R&D and SP#1 team for contribution towards this work.

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  1. Tata Steel, Jamshedpur, Jharkhand, 831001, India

    Tathagata Ray, Debanik Mitra, Ashish Mukherjee & Prabal Patra

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  1. Tathagata Ray
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  2. Debanik Mitra
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Ray, T., Mitra, D., Mukherjee, A. et al. In Situ Temperature Measurement Across the Sinter Bed. Trans Indian Inst Met 76, 1175–1189 (2023). https://doi.org/10.1007/s12666-022-02830-z

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