提高焦炭质量的技术措施有哪些

在炼焦用煤资源供应不足的情况下，出现了煤质量下降、波动增大、品种不平衡、煤场存量少及备煤炼焦生产组织困难加大的局面。因此必须从优化工艺来提高集炭质量，具体的技术措施如下。

(1)优化配煤

根据各地区的炼焦煤资源情况，可通过优化配煤生产出大型高炉用的焦炭，开展炼焦用煤系统及优化比配煤改进焦炭质量的研究，提高配合煤黏结性、降低其碱金属含量及碱度指数，从而降低反应性，提高反应后强度。

(2)配型煤炼焦
配型煤炼焦新工艺是将一部分装炉煤料在装人焦炉前配入黏结剂压制成型后与大部分散状煤料按比例合后装炉炼焦。配型煤炼焦的作用相当于在配煤中添加肥煤，肥气煤，配型煤炼焦可使焦炭M40提高1%~3%，M10降低2%~4%，CSR提高1%~10%。

（3）干熄焦
干法熄焦不仅可回收红焦的显热，还可改善焦炭质量，并减少混法熄焦对大气的污染，干熄焦技术能明显改善焦炭质量。一般认为干熄焦与湿熄焦相比，Mo提高3%~8%，Mio降低0 3%~0.8%，另外干法熄焦使焦炭CSR提高1%~2%.

What are the technical measures to improve coke quality
Under the circumstance of insufficient supply of coal resources for coking, the situation of coal quality decline, fluctuation increase, unbalanced variety, small stock of coal yard and difficulty of production organization for coal preparation and coking increase. Therefore, it is necessary to improve the quality of carbon collection by optimizing the process. Specific technical measures are as follows.
(1) Optimizing coal blending
According to the situation of coking coal resources in different regions, coke for large blast furnace can be produced by optimizing coal blending, coking coal system and optimizing coal blending ratio can be carried out to improve the quality of coke, improve the cohesiveness of blended coal, reduce its alkali metal content and alkalinity index, so as to reduce reactivity and enhance the strength after reaction.
(2) Coking with briquette
The new process of briquette blending coking is that a part of the charging coal is pressed with binder before being loaded into the coke oven and then charged into the coke oven in proportion to most bulk coal. The coking effect of briquette blending is equivalent to adding fertilizer coal and gas coal in coal blending. Coking with briquette can increase M40 by 1%~3%, M10 by 2%~4% and CSR by 1%~10%.
(3) CDQ
Dry quenching can not only recover the sensible heat of red coke, but also improve the quality of coke, and reduce the air pollution caused by mixed quenching. Dry quenching technology can significantly improve the quality of coke. It is generally believed that compared with wet quenching, dry quenching can increase Mo by 3%~8%, Mio by 0.3%~0.8%, and dry quenching can increase CSR by 1%~2%.