无烟煤与添加剂炼焦实验研究

采用马钢炼焦原料研究了无烟煤与添加剂配煤炼焦新工艺.用无烟煤取代部分焦煤的炼焦实验结果表明,在黏结剂PRT和CMC分别为0.5％条件下,无烟煤配入量为14％时所炼出的焦炭的粒焦反应性比9％无烟煤时所炼的焦更低,而反应后强度则高于加入9％无烟煤时所炼的焦,与不加无烟煤所炼的焦的差距很小；此外,在无烟煤配入量为14％时,改变添加剂配比的炼焦实验结果表明,对3-2,3-3及3-5号配方所炼的焦,具有比较好的落下强度与转鼓指数、较低的粒焦反应性和较高的反应后强度,比较接近不加无烟煤的基准焦配方3-1.

STUDY ON COKING TECHNOLOGY FOR ANTHRACITE AND ADDITIVES

A new coking technology for anthracite and additives was studied by using Magang coking raw materials.The coking experiment results of anthracite instead of part coking coal show that,the reactivity index of coke coked at 14% anthracite is low than the reactivity index of coke coked at 9% in the condition of binders PRT and CMC respectively 0.5%,and the post-reaction strength of coke coked at 14% anthracite is high than the post-reaction strength of coke coked at 9%,and these two indexes approach to benchmark coke.Furthermore,the coking experiment results of changing additive adding amount at 14% anthracite show that,the cokes coked at 3-2,3-3 and 3-5 coal blending ratio possessed better falling intensity and drum strength,low reactivity index of coke and high post-reaction strength of coke,and approach to benchmark coke 3-1 coked in the condition of absence of anthracite.