高硫石油焦配煤可磨性规律及粒度分布研究

选取HGI相差较大的两种高硫石油焦B、C和一种淮北煤A按不同比例进行配煤,测定煤样、高硫石油焦样和配煤样品的HGI,采用行星式球磨机将样品（0.63 ～ 1.25 mm）磨制5min,并分析粒度分布.结果表明,在难磨的石油焦中配人一定比例的易磨煤可以提高配煤的HGI;难磨石油焦B与A煤混配后的HGI与配煤比例能够很好地遵循线性可加原则,易磨石油焦C与A煤混配后的HGI与配煤比例线性关系很差;随着配煤中石油焦的比例增加,大颗粒所占的比例增多.

Experimental study on the grinding behavior and particle size distribution of high-sulfur petroleum coke blending coal

Two high-sulfur petroleum coke （ B, C） which HGI existed larger difference and a Huaibei coal （A） and their blendings. The particle size distribution of pulverized coal was analyzed by Laser Particle Size Analyzer on HGI experimental samples （0.63 - 1.25 mm） after the planet type ball mill grinding 5 min. The results showed that blending with a certain proportion of coal grindability of coal can improve the HGI of blended coals. The HGI of hard grind petroleum coke B blended with coal A can well follow a linear additive principle with blending ratio,but grindability petroleum coke C blended with coal A have poor linear relationship with the blending ratio;with the increase in the proportion of petroleum coke in the blending proportion larger particles increase.