首秦焦炭碳素溶蚀能力与显微结构的相关性

doi:10.13228/j.boyuan.issn0449-749x.20130692

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Abstract Because of low cost and high performance index, the stamping coke had been gradually popularized and applicated. However, after using the stamping coke in the blast furnace of Shouqin, it appears several problems such as pressure instability and instable BF performance. In order to make out the actual properties of this batch of coke, the reactivity test, TG-DTA test and optical texture analysis were conducted. The results indicated some relations between optical texture content and quality of cokes. The mosaic texture in the optical texture of coke had an effect on controlling the development of cracks and relieving thermal expansion. The content of mosaic texture in the stamping coke was lower, so it was more prone to generating the cracks in the condition of high temperature and impact. From the weight loss curves of six kinds of coke powder, it can be found that the gasification reaction rate of the stamping coke with high ΣISO increased faster in the process of the temperature from 1 000 ℃ to 1 300 ℃. In that case, it is possible to cause more serious particle degradation, resulting in the instable BF performance.

Key words： coke tamping coke gasification reaction optical texture pore

Received: 09 December 2013 Published: 02 December 2014

PACS:

TF526.1

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	Articles by authors
	MA Tiao
	CHAO Wei
	LI Dong-Shou
	LIU Xiang
	XU Meng
	XU Rong-An

Cite this article:

MA Tiao,CHAO Wei,LI Dong-Shou等. Relationship Between Carbon Dissolution and Microstructure of Coke in Shouqin[J]. Iron and Steel, 2014, 49(12): 33-37.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20130692 OR http://www.chinamet.cn/Jweb_gt/EN/Y2014/V49/I12/33

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