Maintenance method for converter bottom brick of converter and converter

摘要

The present invention relates to a method for maintaining a converter bottom, comprising the steps of: replacing a bottom portion of a bottom portion of the main body, connecting the bottom portion with the side wall portion of the converter, and filling a gap between the bottom portion and the side wall portion; The process of filling the gap includes the steps of injecting a first refractory having a relatively high coefficient of thermal expansion into the gap and constructing the first connection portion in the gap, and a process of filling the gap with a second thermal expansion coefficient having a second thermal expansion coefficient relatively smaller than that of the first refractory. And injecting the refractory into the gap to construct the second connection portion. Therefore, at the time of replacing the bottom part, the first connecting part can fix or fix the bottom part of the bottom part at the outside of the bottom part to prevent the bottom part from coming off or being damaged. The second connection portion can buffer or buffer the second connection portion even when a thermal stress is generated with the bottom portion, thereby preventing cracks from occurring due to thermal stress, thereby extending the life of the bottom portion .