随着高炉大型化和冶炼过程的强化,高炉风口数目增多,热负荷增大,因风口破损而引起的休风频繁,严重影响高炉生产。因此,日本近20多年来进行了大量延长风口寿命的研究工作,并取得了很大成效。根据70年代初的调查,熔损占风口破损总数的80%以上。因此,他们首先避免风口熔损问题进行研究,开发各种以增大冷却水 With the enlargement of the blast furnace and the strengthening of the smelting process, the number of tuyere tuyeres increased, the heat load increased, and the wind break caused by the tuyere was frequent, which seriously affected the blast furnace production. Therefore, Japan has done a great deal of research on extending the life of the tuyere in the past 20 years and achieved great success. According to a survey conducted in the early 1970s, melting loss accounted for more than 80% of the total number of broken tuyeres. Therefore, they first to avoid the tuyere meltdown problem to carry on the research, develops each kind to increase the cooling water