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包钢2号高炉(1513m~3)于1991年9月停炉中修时,在十段冷却壁部位即炉身中部偏下处采用了36层不烧铝炭砖,其厚度为920mm。该部位在冶炼包头矿条件下属软熔区域,对炉衬耐火材料来说,条件恶劣,有煤气流及炉尘的冲刷,有碱金属的侵蚀,也有半熔渣的化学侵蚀,还有温度场不稳定造成的热震。历代破损调查证实,此部位是破损最严重时区段。这次中修于1991年11月10日投产。在1992年4月28日探测炉墙厚度为820mm,6月30日再次探测,其厚度为800mm,而紧接其上的磷酸浸渍粘土砖虽然工
When Baotou No.2 blast furnace (1513m ~ 3) was shut down in September 1991, 36 layers of unburned aluminum carbon bricks were used on the lower ten sections of the stave, ie, the lower part of the central part of the shaft, with a thickness of 920mm. The site under the conditions of smelting Baotou mine refractories, refractory lining material, the conditions are poor, there is gas flow and dust erosion, there is erosion of alkali metals, but also semi-molten slag chemical erosion, as well as the temperature field is not Stable thermal shock. Historical damage investigation confirmed that this site is the most damaged when the section. The repair was put into operation on November 10, 1991. In April 28, 1992 exploration furnace wall thickness of 820mm, once again detected on June 30, the thickness of 800mm, and immediately followed by the phosphoric acid impregnated clay brick Although the workers