ISIJ International ( IF 1.8 ) Pub Date : 2020-09-25 , DOI: 10.2355/isijinternational.isijint-2020-079 Minmin Sun 1 , Jianliang Zhang 1, 2 , Kejiang Li 1 , Hongtao Li 1 , Ziming Wang 1 , Chunhe Jiang 1
To better understand metallurgical coke behavior in blast furnace, the preparation of coke analogues was improved by using demineralized coke powder. Scanning electron microscope, Raman spectroscopy, mercury intrusion method, and CO2 gasification reactivity test were used to establish the representativeness relation between different coke analogues and metallurgical cokes. The results show that the coke analogues prepared by graphite powder and demineralized metallurgical coke powder were in general representative of industrial coke. With the controlled and reproducible pore characteristic, the average pore diameter of coke analogues is smaller and the average pore area is bigger, while the pore connectivity of metallurgical coke is stronger. Analogue prepared from demineralized coke has a slight superiority over that prepared from graphite in carbon structure and gasification reaction with CO2. In general, the coke analogue made from demineralized coke has higher comparability to industrial metallurgical coke and are more suitable for laboratory research.
中文翻译:
制备焦炭类似物的新方法及工业冶金焦的可比性
为了更好地理解高炉中冶金焦的行为,使用脱矿质焦粉改进了焦炭类似物的制备。扫描电子显微镜,拉曼光谱,压汞法和CO 2气化反应试验用于建立不同焦炭类似物与冶金焦炭之间的代表性关系。结果表明,由石墨粉和脱矿冶金焦粉制得的焦炭类似物通常是工业焦炭的代表。具有可控且可再现的孔特征,焦炭类似物的平均孔径较小,平均孔面积较大,而冶金焦的孔连通性较强。由软化焦炭制备的类似物在碳结构和与CO 2的气化反应方面比由石墨制备的类似物略有优势。。通常,由软化焦炭制得的焦炭类似物与工业冶金焦炭具有更高的可比性,并且更适合于实验室研究。