我厂原有内径610公厘的单排风口冲天炉,熔化量每小时最高1．5吨,焦铁比1∶6,出铁温度最高1380℃。经学习苏联先进经验,改装成三排风口以后,仅将炉膛内径增加至635公厘,熔化量即增至每小时2．5－3．2吨,出铁温度提高至1460℃,焦铁比也升到1∶10。无论从铁水质量、熔化效率及经济价值来讲,都收到相当的效果。 I plant the original diameter of 610 mm single-outlet cupola, melting capacity of up to 1.5 tons per hour, iron and iron ratio of 1: 6, tapping temperature up to 1380 ℃. After learning the advanced experience of the Soviet Union, converted into three vents, only the furnace bore diameter increased to 635 mm, melting amount increased to 2.5-3.2 tons per hour, tapping temperature increased to 1460 ℃, coke iron Ratio also rose to 1:10. In terms of hot metal quality, melting efficiency and economic value, both received considerable results.