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.

在本研究中，已经对高容量高炉风口的自流可铸吹管的失效事件进行了严格的研究。基于故障吹管的故障分析，提出了可能的预防措施。已经发现高的热风压力是发生吹管故障的条件。因此，作为预防措施，正确调节热风压力至关重要。为了分析故障原因，在安装吹管之后，每天都要测量外壳温度。可以看到，当外壳温度超过350°C时，会发生吹管堵塞。根据预防措施的建议，如果温度超过350°C并达到480°C，建议更换吹管，以保持高炉的运行。这项研究是在高容量高炉中进行的，发现在生产率和安全性方面，故障的影响是巨大的。还已经发现，该研究的纲要可以在其他高容量高炉中复制，也可以扩展到任何低容量高炉。