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一、内衬破损的机理大型高炉炉身下部至炉腹区的砌体大致处于1000℃～1400℃的温度条件下工作。此部位砌体主要受到化学侵蚀、热应力和温度波动而产生的热冲击作用。1.化学侵蚀高炉内衬侵蚀最严重的部位是炉身下部、炉腰及炉腹区,其原因是由于碱金属(Na、K)、Zn和CO等的化学作用,导致耐火砖衬的变质。碳的析出是在一定的温度(400～800℃)
First, the mechanism of the lining damage Large blast furnace body to the blast furnace area under the masonry roughly at 1000 ℃ ~ 1400 ℃ temperature conditions. This part of the masonry mainly by chemical erosion, thermal stress and temperature fluctuations caused by thermal shock. 1. Chemical attack Blast furnace liner erosion is the most serious parts of the lower part of the furnace body, the waist and the belly area, the reason is due to the chemical effects of alkali metals (Na, K), Zn and CO, resulting in refractory brick lining deterioration . Carbon precipitation is at a certain temperature (400 ~ 800 ℃)