炉缸外壳开裂最易发生在渣口至铁口之间部位,而热应力的破坏则是炉缸砌砖产生环状贯通缝的主要原因。防止炉壳开裂的主要对策有:炉缸部位砖衬选择高铝砖或含Si_3N_4的SiC砖;炉缸冷却壁和炉壳之间的填料用水渣代替耐火泥浆;调整死铁层深度;及时更换漏水的风、渣口等。 Furnace shell cracking most likely to occur in the slag mouth to the mouth of the site between the parts, and thermal stress is the destruction of the hearth brick Zhuanban through the main cause of the seam. The main countermeasures to prevent cracking of the furnace shell are as follows: High alumina brick or SiC brick containing Si_3N_4 is selected as the brick lining in the hearth; water slag instead of refractory mud is used as the filler between the cooling wall of the hearth and the furnace shell; the depth of the dead iron is adjusted; Leaking wind, slag mouth and so on.