CAJ | 학술논문

对挥发分介于28%~32%的强黏结1/3焦煤的煤质特征差异和优化配用技术进行探讨,研究发现一些 GR.I 值、Y 值接近的强黏结1/3焦煤,其流动度和膨胀度差异较大,其中以贵州、淮南等地1/3焦煤流动度膨胀度高,煤质接近肥煤特征；将其按1/3焦煤配用,导致配合煤流动性及膨胀性过大,反而降低焦炭质量；按肥煤配用,可充分发挥其流变膨胀特性,从而稳定焦炭质量。因此,GR.I 值、Y 值等指标对强黏煤的区分能力有限,在一定程度上限制了强黏煤的合理配用。
대휘발분개우28%~32%적강점결1/3초매적매질특정차이화우화배용기술진행탐토,연구발현일사 GR.I 치、Y 치접근적강점결1/3초매,기류동도화팽창도차이교대,기중이귀주、회남등지1/3초매류동도팽창도고,매질접근비매특정；장기안1/3초매배용,도치배합매류동성급팽창성과대,반이강저초탄질량；안비매배용,가충분발휘기류변팽창특성,종이은정초탄질량。인차,GR.I 치、Y 치등지표대강점매적구분능력유한,재일정정도상한제료강점매적합리배용。
Coal quality characteristic differences and optimal blending and application technology of strong caking 1/3 coking coal whose volatile matter was in the range of 28%~32% were discussed, the fluidity and expansion had large differences when GR.I and Y values of strong caking 1/3 coking coal were similar with each other, especially the coking coal from Guizhou and Huainan provinces, whose coal quality was almost similar with metabituminous, if using them as the 1/3 coking coal, fluidity and expansion would be too high, coke quality would be reduced, if they were used as the metabituminous, rheological expansion characteristics could be fully played, the coke quality could be stabilized.Therefore, GR.I 、 Y were not reliable for distinguishing of strong caking coal, so they restricted the reasonable blending and application of strong caking coal.