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鞍钢从1971年起先后在四座高炉自炉腰以上采用汽化冷却,三座效果不好,其中6号高炉(1050米~3)汽化冷却只一年零七个月,管子烧坏26％。而2号高炉(826米~3)自1974年11月9日投产至今五年多,冷却水管只坏3.7％,仍在继续强化冶炼,系数达2.0以上。2号高炉同6号高炉比,在冷却壁材质、铸造工艺、检测等方面都没有改进,为什么取得如此好的效果呢?对2号、6号高炉汽化冷却系统的水循环计算得到了答案。 6号高炉在中等热负荷、汽包为1.0公斤/厘米~2压力下,因阻力损失过大而不能循环,汽包压力提至3.0公斤/厘米~2,全炉循环流量只有256吨/
Anshan Iron and Steel has been in the four blast furnace since 1971 from above the waist with vaporization cooling, the third effect is not good, of which No. 6 blast furnace (1050 m 3) vaporization cooling only one year and seven months, the tube burned 26%. The No.2 blast furnace (826-3) has been put into operation for more than five years since November 9, 1974. The cooling water pipe is only 3.7% bad and the smelting continues with the coefficient of 2.0 or above. No.2 blast furnace with the blast furnace No. 6, in the stave material, casting technology, testing and other aspects have not been improved, and why so good results? On the 2nd, No. 6 blast furnace gasification cooling water system calculated the answer. No.6 blast furnace in the medium heat load, the drum is 1.0 kg / cm ~ 2 pressure, due to excessive loss of resistance and can not be recycled drum pressure raised to 3.0 kg / cm ~ 2, the furnace circulating flow of only 256 tons /