|
| 黏结指数G值表征炼焦煤结焦性的局限性研究 |
| Limitations of characterizing coking properties of coking coal with the value of bonding index G |
| 投稿时间：2014-02-26 |
| DOI： |
| 中文关键词: 黏结指数G值 炼焦煤 结焦性 高温塑性 成焦光学组织 局限性 |
| 英文关键词: value of bonding index G coking coal coking property high temperature plasticity coking optical organization limitation |
| 基金项目: |
|
| 摘要点击次数: 16098 |
| 全文下载次数: 6825 |
| 中文摘要: |
| 对7组相同变质程度和黏结指数G值炼焦煤煤岩显微组分、高温塑性和成焦光学组织结构进行研究。结果表明,相同变质程度和G值的炼焦煤高温塑性差异明显,软化温度相差3～29℃,固-软温度区间相差8～42℃,最大基氏流动度比值为1.3~1266；其炼焦煤焦炭光学组织结构差异亦明显,粗粒镶嵌结构占比相差9%～43%,同性结构占比相差2%~16%,纤维结构占比相差15%~36%。因此, G值对煤料受热所产生胶质体的数量能较好地表征,但对其结焦性的判断存在缺陷。 |
| 英文摘要: |
| The maceral, high-temperature plasticity and coking optical structure of 7groups of coking coals with the same metamorphic degree and bonding index G value were studied. The results indicate that coking coals of the same metamorphic degree and G value differ greatly in high-temperature plasticity. Their difference in softening temperature can be as large as between 3~29℃; in solid-soft temperature range, 8~42℃; and in maximum Gieseler fluidity ratio, 1.3~1266. Their coking optical structures also differ hugely, with the difference in mosaic structure proportion at 9%~43%; in same-sex structure proportion, 2%~16%; and in fiber structure proportion, 15%~36%. It is thus concluded that, G value can well characterize the quantity of metaplast arising from coal heating, yet it has limitations when used to judge coking properties of coal. |
|
查看全文
查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
