工艺因素影响焦炭颗粒耐压强度的试验研究

STUDY ON TECHNOLOGICAL FACTORS ON COMPRESSIVE STRENGTH OF COKE PARTICLES

焦炭颗粒的耐压强度一直是焦炭颗粒最重要的性质之一。利用最近提出的表征焦炭颗粒耐压强度的新方法,就模压压力、加压方式、粒度组成范围、粒度大小、粒度配比等因素对单粒度或多粒度组成焦炭颗粒耐压强度的影响进行了较为详细的试验研究。结果表明:(1)焦炭颗粒的粒度大小和粒度范围均可用其原始平均细度来表征。焦炭颗粒的原始平均细度越大,其耐压强度系数也就越高;(2)多粒度组成焦炭颗粒混合料的耐压能力比单粒度组成混合料的耐压能力要高得多。对多粒度组成焦炭颗粒而言,模压压力及粒度组成配比对其耐压强度系数的影响不甚明显;(3)分阶段缓慢加压到位比一次快速加压到位有利于提高焦炭颗粒的耐压强度系数。

For coke particles, the compressive strength is one of the important properties. A new method has been developed to characterize the compressive strength of coke particles. With this new method, the effect of technological process factors on the compressive strength of coke particles with only one or many kinds of grain size has been studied in detail in terms of the molding pressure, the pressing method, the grain size and its distribution as well as the grain mixing ratio. It is found that the bigger the original grain size of coke particles, the higher their compressive strength coefficient. The compressive strength coefficient of coke particles with many kinds of grain size is higher than that of coke particles with only one kind of grain size. In the case of coke particles with many kinds of grain size, the molding pressure and the grain mixing ratio have a little effect on the compressive strength coefficient. Compared with the once speediness press mold, the slow grading press mold is a suitable mold for improving the compressive strength of coke particles.