本文根据热平衡原理，推导出含碳球团竖炉内用碳还原铁氧化物时，最小热载体煤气需要量（Ｖｑ）的计算公式。用此公式计算结果表明：最小热载体煤气需要量很大，在含碳球团全部用碳还原时，含碳球团竖炉－铁浴炉熔融还原流程的煤耗和氧耗都很高。不经济。在实验室研究时，含碳球团的还原速度很快。但由于Ｖｑ很大，这一优点在竖炉内难以实现。 Based on the principle of heat balance, this paper deduces the calculation formula of minimum heat carrier gas requirement (Vq) when using carbon-reduced iron oxide in carbonaceous pellet shaft furnace. The calculation results of this formula show that the minimum heat carrier gas needs a great amount of coal and oxygen consumption when the carbon-containing pellets are all reduced by carbon. Uneconomical. Carbonaceous pellets are rapidly reduced during laboratory studies. However, because Vq is large, this advantage is difficult to achieve in a shaft furnace.