【摘要】 以8种不同种类单种煤焦炭为原料,在氮气气氛下,测定了30℃～1300℃范围内的焦炭热膨胀性能.依据焦炭自身的特性,提出了适合焦炭的热膨胀性能测定方法和热膨胀性能参数.根据测得的焦炭热膨胀性能参数,探索了焦炭热膨胀性能、焦炭热强度及煤变质程度之间的关系.研究发现,依据所提出的参数可以将焦炭热膨胀性能分为三个阶段,并且提出了焦炭收缩阶段为微裂纹产生的观点.在焦炭热膨胀对热强度影响方面,发现热膨胀性能参数与焦炭热强度成正比关系.在煤的变质程度对焦炭膨胀性能影响方面,发现最大线性膨胀Lf与挥发分Vdaf成二次曲线关系,在Vdaf为30%左右Lf取到最大值.最大线性膨胀Lf与煤的黏结性成正比关系,但是会受到挥发分的影响.更多还原

【Abstract】 The thermal expansion of 8 different coke was measured between 30 ℃-1 300 ℃ in N2.Based on coke’s own characteristics,the parameter and measurement of coke expansion are given.Based on parameter measured,this paper explores the relationship between the expansion of coke and CSR,CRI,coal.Through research the result shows:1)the thermal expansion of coke can be divided into three stages and pointing out the shrinkage stage means micro-cracks generating.2)The parameters of thermal expansion are increasing with the increasing of coke heat strength.3)The relation between Lf and Vdaf is quadratic function.When Vdaf comes up to 30%,the Lf can get maximum.Lf is increasing with the increasing of Bond of coal,but which is affected by Vdaf.更多还原