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Failure Analysis and Preventive Measure Proposition of Self-Flow Castable Blow Pipe of Blast Furnace Tuyere Stock for Enhancing Reliability

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Abstract

In this present study, the failure incidents of self-flow castable blow pipe of high volume blast furnace tuyere stock have been critically investigated. Based on failure analysis of failed blowpipes, possible preventive measures have been proposed. High hot blast pressure has been found to be the condition for occurrence of blowpipe failure. Hence, proper regulation of hot blast pressure is of utmost importance as a preventive measure. To analyse the cause of failure, after installation of blowpipe, the shell temperature is measured on a daily basis. It is observed that when the shell temperature crosses 350 °C, blowpipe jamming occurs. According to preventive step proposition, if the temperature crosses 350 °C and attains 480 °C, the blowpipes are advised to be replaced for maintaining the operation of blast furnace. This study has been done in high volume blast furnace where it is found that the impact of failure is immense with regard to productivity and safety. It has also been found that the compendium of this investigation can be replicated in other high volume blast furnaces and can also be extended to any low volume blast furnace.

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Acknowledgements

We extend our sincere gratitude to Sri A. Bhowmick, GM Incharge Services and Sri A.K. Mistry, GM Blast Furnaces and their team for facilitating the above experiment and research.

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Authors and Affiliations

  1. Research and Development Centre for Iron and Steel, SAIL, Ranchi, India

    Basudev Mishra & Rakesh Kumar Singh

  2. Rourkela Steel Plant, SAIL, Rourkela, India

    Prabodh Ranjan Padhee & Shashank Mishra

  3. Metallurgical and Materials Engineering Department, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India

    Dibya Ranjan Sahoo

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  1. Basudev Mishra
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  2. Prabodh Ranjan Padhee
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  3. Rakesh Kumar Singh
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  5. Shashank Mishra
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Correspondence to Rakesh Kumar Singh.

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Mishra, B., Padhee, P.R., Singh, R.K. et al. Failure Analysis and Preventive Measure Proposition of Self-Flow Castable Blow Pipe of Blast Furnace Tuyere Stock for Enhancing Reliability. Trans Indian Inst Met 73, 2191–2203 (2020). https://doi.org/10.1007/s12666-020-02022-7

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