单种焦煤结焦性能及其混配性研究

Coking capacity and coking compatibility of coking coals

对5种不同矿点的焦煤进行煤质分析和单种煤结焦性能比较,并进行配煤炼焦试验研究。结果表明,尽管单种焦煤的结焦性能接近,但其工艺性质及成焦显微结构存在较大差异。在配煤炼焦中,胶质体含量丰富、胶质体的流变性和膨胀性高、成焦粗粒镶嵌结构多的焦煤,与不同炼焦煤的混配性强,所得焦炭质量较优。

The quality and coking capacity of 5 coking coals from different mines were analyzed and compared, and coal blend coking experiment was conducted. The results show, although the coking capacity of the coals doesn＇t differ much, their process indexes and coking microstructures are re-markably different. During blending and coking, if the coking has abundant plastometers with high fluxion and expansion and more coarse coking grains, its coking compatibility with different coals will be good and the coke quality will also be high, and vice versa.