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Study on the Influence Factor of Coke Pulverization Rate and Its Effect on Operating Index of Large Blast Furnace
Coke and Chemistry Pub Date : 2020-03-17 , DOI: 10.3103/s1068364x19110097
Wencheng Zhang , Xiaoyong Zhang , Mingdong Zheng

Abstract

The carbon dissolving reaction is the main factor for the deterioration of coke in the blast furnace. Therefore, in order to investigate the effect of coke deterioration on the permeability of blast furnace, the Coke Pulverization Rate (CPR) which represented the degree of Matrix carbon loss after carbon dissolution was put forward in this paper. The results showed that the CPR increases with the increase of volatile of coal blending, ash content of coke, M10 and coke reactivity index (CRI), while decreases with the rising of M40 and coke strength after reactivity (CSR). Analysis of the production data of 5BF blast furnace of Meishan Steel showed that under the conditions of coke ash (Ad) < 12.2%, M10 < 6.5%, M40 > 87%, CRI < 26% and CSR > 66%, the CPR would be less than 23%, which is conductive to ensure stable permeability large blast furnace.


中文翻译:

大型高炉焦炭粉化率的影响因素及其对运行指标的影响

摘要

碳溶解反应是高炉中焦炭劣化的主要因素。因此,为了研究焦炭变质对高炉渗透性的影响,提出了代表碳溶解后基体碳损失程度的焦炭粉碎率(CPR)。结果表明,CPR随配煤挥发分,焦炭灰分,M 10和焦炭反应指数(CRI)的增加而增加,而随M 40和活性后焦炭强度(CSR)的增加而下降。梅钢5BF高炉生产数据分析表明,在焦灰(A d)<12.2%,M10 <6.5%,M 40 > 87%,CRI <26%,CSR> 66%,CPR将小于23%,这可确保大型高炉的渗透性稳定。
更新日期:2020-03-17
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