矿业科学学报2024，Vol.9Issue(2)：144-155,12.DOI:10.19606/j.cnki.jmst.2024.02.002
添加二氧化硅的煤石墨化高温高压模拟实验
High-temperature and high-pressure simulation of coal graphitization with SiO2 additive
摘要
Abstract
This study investigates the effect of SiO2 minerals on coal graphitization under natural conditions through high-temperature and high-pressure simulation experiment to invert the coal-based graphite formation environment.We thoroughly mixed the SiO2 additive with the sorted vitrinite in coal(from the Ge-mudi mining area in Guizhou province[SW China])and then carried out high-temperature and high-pressure simulation experiment with ranging from 600℃to 1200℃,1.5 GPa to 2.0 GPa.The graphitization products of the samples were analyzed by X-ray diffraction,Raman spectroscopy,and high-resolution trans-mission electron microscopy(HRTEM)to investigate the influence of the SiO2 additive on the process of coal graphitization.Results show that in contrast to the graphitization-promoting ability exhibited in high-temperature environments,SiO2 demonstrates a hindering effect on graphitization in high-temperature and high-pressure environments,inhibiting the growth of coal graphitization.This finding provides an hypothesis for the lower graphitization of coal in areas with strong tectonics under natural conditions.关键词
煤系石墨/高温高压/二氧化硅添加剂/石墨化Key words
coal-based graphite/high temperature and high pressure/SiO2 additive/graphitization分类
天文与地球科学引用本文复制引用
陈高健,曹代勇,王安民,魏迎春,刘志飞,赵萌..添加二氧化硅的煤石墨化高温高压模拟实验[J].矿业科学学报,2024,9(2):144-155,12.基金项目
国家自然科学基金(42072197,41902170,41772156) （42072197,41902170,41772156）
