Abstract:In order to explore the reduction characteristics of carbon-containing pellets under different conditions and further reveal its reduction reaction mechanism, the characteristics of carbon-containing pellets reduction process in the range of 800 ~ 1 100 ℃ are researched by thermogravimetric reduction experiment, and the effects of reaction rate, metallization rate and compressive strength on the reduction process and reduction products under different conditions are analyzed. The results show that when the reaction occurs in a reducing atmosphere, the primary and secondary orders of the influence of each factor on the reduction process of carbon-containing pellets include reduction temperature, carbon-oxygen ratio, reducing atmosphere. During the test, the reaction rate of carbon-containing pellets first increases and then decreases. Appropriate increase of temperature, adjustment of carbon-oxygen ratio and reduction atmosphere composition can promote the reduction of carbon-containing pellets. When the temperature is increased, the metallization rate also increases, and when the metallization rate reaches a certain level, the effect of temperature on it is weakened. When the reduction temperature is 800 ~ 1 000 ℃, the compressive strength of carbon-containing pellets does not change significantly with the increase of temperature, and when the reduction temperature is higher than 1 000 ℃, the compressive strength of carbon-containing pellets is significantly improved.