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本文首次指出,在高温氧化性护气中焙烧含碳团矿时,还原反应开始前存在一脱碳期,其例证是,在表层的矿相照片上发现存在无碳无铁的浮氏体烧结层.因此,在高温炉气中焙烧含碳团矿时的化学反应过程可分为三段;前期为脱碳过程,中期为还原过程,后期为再氧化过程.后期的再氧化使金属化率随时间的变化由极大植逐渐下降,此金属化率极大值的高低主要决定于前期的脱碳程度.
This paper first points out that there is a decarburization period before the reduction reaction begins when the carbonaceous group is roasted in a high temperature oxidizing gas shield. An example of this is the presence of a carbon-free, iron-free, Floor. Therefore, the process of chemical reaction when carbonaceous ores are roasted in high temperature furnace gas can be divided into three stages: the decarburization stage in the early stage, the reduction stage in the middle stage, and the reoxidation stage in the later stage. Late reoxidation metallization rate changes over time by the great plant gradually decreased, the metalization of the maximum value of the level mainly depends on the level of decarbonization.