炼焦煤粒度调整技术

Particle size adjustment technology for coking coal

分析了粒度对炼焦煤结焦性影响的研究进展,结合煤料显微组分特征、成焦机理等,介绍了粒度对煤料结焦性影响的主要研究方法。分析了原料煤粉碎粒度和焦炭质量的相关性,指出应充分利用煤料破碎后显微组分含量与粒度的关系。对煤料按粒度大小进行选择性利用,可以提高煤炭的利用率。超细粉碎灰分较高的煤料,可以使煤中无机物和有机物有效分离,提高选煤过程中的精煤产率,扩大炼焦煤源。但直接利用超细粒度煤料炼焦,可能会增加装炉操作压力、降低煤料黏结性。

Introduce the progress on coking property of coking coal, which is strongly influenced by its particle size. Based on the petrology of coal and mechanism of coke formation, analyse the main methods for this influence study. Investigate the correlation between the grinding particle size of feed coal and coke quality. The results show that the coal should be selected based on the relationship between the microcomponents content and particle size,which can improve the utilization efficiency of coal. The embedded mineral can be effectively separated from coal by uhrafine grinding,which obviously increase the yield of clean coal, and more coal can be used for coking. Coking directly using uhrafine coal would increase charging pressure,decrease caking property.