7.63 m焦炉蓄热室格子砖破损原因及机理分析

耐火与石灰 ›› 2019, Vol. 44 ›› Issue (6): 14-17.

7.63 m焦炉蓄热室格子砖破损原因及机理分析

徐国涛1 盛军波2 杨帆2 王大春2 冯强2 刘黎1 张洪雷1

1.宝钢中央研究院武汉分院, 武汉430080； 2.武汉平煤武钢联合焦化有限公司，武汉430080

出版日期:2019-12-10 发布日期:2020-01-02

Breakage causes of checker brick of regenerator in 7.63 m coke oven and its mechanism analysis

Xu Guotao1 Sheng Junbo2 Yang Fan2 Wang Dachun2 Feng Qiang2 Liu Li1 Zhang Honglei1

1.Baosteal Central Research Institute, Wuhan 430080, China; 2.Wuhan Pingmei-Wugang Joint Coking Co.,Ltd., Wuhan 430080, China

Online:2019-12-10 Published:2020-01-02

摘要/Abstract

摘要：

焦炉蓄热室格子砖的破损与其中Fe2O3、K2O等杂质含量过高有关，半硅砖用后组成分析结果表明，其砖中的Fe2O3、K2O增加幅度比黏土砖小。用后黏土质和半硅质格子砖的主要组成包括高岭石、玻璃相、莫来石相以及以镁铝钛铁氧化物为主的析出相。基质相及析出相中Fe2O3含量高，K2O在高岭石相中的固熔降低了格子砖的熔点并使砖的性能劣化。Fe2O3与CO在蓄热室换热加热的循环过程中与格子砖发生的反复的氧化还原反应，推测是引起格子砖体积过度膨胀变形的原因。因此，提高砖的质量、减少杂质含量，有利于提高蓄热室的使用寿命。

关键词: 焦炉, 蓄热室, 格子砖, 黏土砖, 半硅砖, 耐火材料

Abstract:

The breakage of checker brick in regenerator of the coke oven is associated with high content of impurities such as Fe2O3,K2O and so and.The used semi-silica brick composition analysis showed that the increasing amplitude of Fe2O3 and K2O are lower than fireclay brick.The main compositions of the used fireclay brick and semi-silica checker brick are kaoline, glasses phase, mullite and magnesium aluminum titanium iron oxide based precipitation phase.The Fe2O3 content in matrix phase and precipitation phase is high.The solid solution of K2O with kaoline phase reduces the melting point of check brick and the brick performance.Fe2O3 and CO undergo repeated oxidation-reduction reactions with checker bricks during the heat exchange and heating cycle of the regenerator,which is presumably the cause of excessive expansion and deformation of the volume of checker bricks.Therefore, improving the quality of bricks and reducing the impurity content are beneficial to prolonging the service life of the regenerator.

Key words: Coke oven, Regenerator, Check brick, Fireclay, Semi-silica brick, Refractory

中图分类号:

TQ175.73

徐国涛盛军波杨帆王大春冯强刘黎张洪雷. 7.63 m焦炉蓄热室格子砖破损原因及机理分析[J]. 耐火与石灰, 2019, 44(6): 14-17.

Xu Guotao Sheng Junbo Yang Fan Wang Dachun Feng Qiang Liu Li Zhang Honglei. Breakage causes of checker brick of regenerator in 7.63 m coke oven and its mechanism analysis[J]. REFRACTORIES & LIME, 2019, 44(6): 14-17.

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