高炉内兰炭与焦炭之间的交互作用

通过热重分析实验和模拟氧气高炉中炉料反应行为，探究兰炭和焦炭的反应性，以及兰炭和焦炭之间的交互作用.热重实验结果表明，兰炭反应性优于焦炭，兰炭在加热过程中出现2个DTG峰值，第1个峰值是由于兰炭的二次热解，第2个是由于热解和气化耦合反应.在加热到800 ℃之后，兰炭和焦炭之间存在交互作用，并且随着升温速率的增加，交互作用增强.在高炉炉况下，兰炭的加入能够减少焦炭的反应和焦炭粉化程度，降低CO₂和H₂O气体对焦炭气孔壁的侵蚀作用，降低大孔的生成，从而对焦炭起到保护作用. 

Interaction between semi-coke and coke in blast furnace conditions

The reactivity of coke and semi-coke and their interaction have been investigated by conducting the thermogravimetric analysis experiment and simulating the burden reaction in oxygen blast furnace. The experiment shows that the reactivity of semi-coke is superior to that of coke. The semi-coke has two DTG peaks during heating: the first one for the secondary pyrolysis of semi-coke and the second for the coupling reaction of pyrolysis and gasification. The interaction between the semi-coke and the coke appears when the furnace burden is heated to 800 ℃, and as the heating rate increases, their interaction becomes stronger. In the blast furnace conditions, semi-coke can reduce the reaction and pulverization of coke and the erosion of its pore wall by CO₂ and H₂O, which is a good protection for coke.