CAJ | 학술논문

通过模拟高炉实际条件，研究了温度、富碱条件等对五种捣固焦气化反应的影响，并结合光学组织和微观气孔结构分析了捣固焦在高温下的碳溶反应规律。实验结果表明，反应温度升高和富碱均能较大地提高捣固焦气化反应失碳率。不富碱时，捣固焦气化反应失碳率随温度升高先缓慢增长而后急剧升高，在1000℃以下时反应较少；富碱后，四种捣固焦失碳率随温度升高先急剧升高而后趋于平稳，在1100℃时已达到最大值。捣固焦内部闭气孔比例较大，大气孔较少，微小气孔较多，局部存在盲肠状气孔，反应后大气孔和贯穿孔数量增加。除反应性最低的捣固焦A外，其他四种捣固焦以基础各向异性和粗粒镶嵌结构为主，在1000℃和1100℃时抗碱金属侵蚀能力较差。
통과모의고로실제조건，연구료온도、부감조건등대오충도고초기화반응적영향，병결합광학조직화미관기공결구분석료도고초재고온하적탄용반응규률。실험결과표명，반응온도승고화부감균능교대지제고도고초기화반응실탄솔。불부감시，도고초기화반응실탄솔수온도승고선완만증장이후급극승고，재1000℃이하시반응교소；부감후，사충도고초실탄솔수온도승고선급극승고이후추우평은，재1100℃시이체도최대치。도고초내부폐기공비례교대，대기공교소，미소기공교다，국부존재맹장상기공，반응후대기공화관천공수량증가。제반응성최저적도고초A외，기타사충도고초이기출각향이성화조립양감결구위주，재1000℃화1100℃시항감금속침식능력교차。
The influences of temperature and alkali metals on the gasification reactions of 5 kinds of stamp charging cokes were investigated by simulating the real conditions of blast furnaces. The carbon solution loss reaction regularity of the cokes was also analyzed by testing the optical textures and microscopic pore structures. The results show that the mass loss ratio of the cokes can increase quickly by rising the reaction temperature or enriching alkalis. Without alkalis, the mass loss ratio of the cokes increases slow-ly firstly and then quickly, and it is low when below 1000℃;but with alkalis, the mass loss ratio of 4 kinds of stamp charging cokes increases quickly firstly and gently then, and it reaches the maximum at 1100℃. The cokes contain more closed pores, more small pores, less large pores, and a few cecum-like pores locally. The quantity of large pores and connected pores in the cokes increases after the reactions. Except stamp charging coke A, whose coke reactivity index is the lowest, the other 4 kinds of stamp charging cokes are mainly basic anisotropic and coarse mosaic structures, which are less resistant to alkali metals at 1000℃ and 1100℃.