通过冷,热态模拟试验,得到了中央送风冲天炉炉内气流运动、炉气成分分布和炉温分布的规律。在5t/h中央送风冲天炉上进行了现场试验,在焦铁比1∶10～11的情况下,出铁槽处铁水温度达到1440～1480℃,Si、Mn烧损在10—20％以内。对熔炼过程中Si、Mn烧损进行了理论分析,认为对这类冲天炉采用低风速进风熔炼是合理的。 Through the cold and hot simulation tests, the law of the airflow movement, furnace gas composition distribution and furnace temperature distribution in the central air blow cupola furnace was obtained. In the 5t / h central air blow cupola on-site test carried out in the case of iron and iron ratio of 1:10 to 11, the temperature of molten iron in the iron tank reaches 1440 ~ 1480 ℃, Si, Mn burning in 10-20% Within. The theoretical analysis of Si and Mn burning in the melting process is made, and it is reasonable to adopt low wind speed inlet air smelting for such cupola furnace.