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本文提出了用竖炉进行粒化生铁脱碳的方法生产低碳粒铁，以解决我国废钢短缺的问题。作者采用可连续给排料的小竖炉（φ＝８０ｍｍ），模拟了竖炉粒铁脱碳的过程。实验结果表明，竖炉粒化生铁脱碳方法是可行的，只要气氛中的氧含量控制在３％以下，脱碳过程可以顺利进行，在适宜的温度和粒度范围内，３～５ｈ内可将粒铁中碳脱至１％以下。通过对实验数据的回归处理，得出了脱碳速率与温度和粒度的关系式。本文还讨论了竖炉粒铁脱碳工艺的主要操作参数。
In this paper, we propose to use the shaft furnace to pelletize pig iron decarburization method to produce low-carbon iron, in order to solve the problem of shortage of scrap in our country. The authors used a small continuous shaft furnace (φ = 80mm) to simulate the process of iron decarburization in shaft furnace. The experimental results show that the method of shaft furnace decarburization of pig iron is feasible, as long as the oxygen content in the atmosphere is controlled below 3%, the decarburization process can be carried out smoothly. Within a suitable temperature and particle size range, Granular iron off to 1% or less. The relationship between decarburization rate and temperature and particle size was obtained by regression analysis of experimental data. This article also discusses the main operating parameters of the shaft furnace iron decarburization process.