ABSTRACT

The thermal properties of coke are important for coking production and blast furnace operation. At present, the Coke Reactivity Index (CRI) and Coke Strength after Reaction (CSR) indices are used as key indicators for evaluating these thermal properties. Furthermore, the strength after a certain percentage of carbon loss has been used as a supplementary indicator. The aim of the present study was to elucidate the connection between microscopic characteristics and the post-reaction strength of coke. The pore structures of different industrial cokes were examined via optical microscopy. The indicators extracted from pore-wall distribution curves exhibited a strong correlation with the coke post-reaction strength. Using multiple linear regression analysis, we modeled the effects of ternary factors on this strength. The model may provide a new means of coal blending aimed at improving the quality of coke.

摘要

焦炭的热性能对焦化生产和高炉操作很重要。目前，焦炭反应性指数（CRI）和焦炭反应后强度（CSR）指数被用作评价这些热​​性能的关键指标。此外，还以一定比例的碳损失后的强度作为补充指标。本研究的目的是阐明焦炭的微观特征与反应后强度之间的联系。通过光学显微镜检查了不同工业焦炭的孔结构。从孔壁分布曲线中提取的指标与焦炭反应后强度有很强的相关性。使用多元线性回归分析，我们模拟了三元因素对这种强度的影响。