基于软熔滴落性能的高炉合理炉料结构

doi:10.13228/j.boyuan.issn0449-749x.20150605

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Abstract In order to fully understand the softening-meting properties of sintering ore with different basicity， ration of natural lump ore， and BF burden structures in Ansteel and find the methods used to estimate BF burden structures， some investigations were made systematically in laboratory on the metallurgical performance of sintering ore with different basicity. In addition， the high temperature performance of combined BF burdens forming by the sinter with various basicity， pellet and natural lump ores， were also discussed. The results show that the mineral sinter compositions became more rational with the increase of basicity， hence， the reducibility and the reduction degradation were improved. When the basicity was in the range of 1.90-2.05， good softening-melting performance could be obtained just with individual sinter ore. As the basicity increased to 1.95-2.15， the penetrability was better. When the basicity of the combination of sinter and pellet was 1.90-2.15， the softening and melting zones became narrow and property with low[S]was realized. With the addition of natural lump ore， the softening zone widened while the melting zone became narrow， the comprehensive performance was improved. Based on the research results， an assessment index for Ansteel raw material was obtained for the interactive reaction among burdens. The index can be used to assess the reasonableness of BF burden structure. Considering the reactivity index and the economic cost， the reasonable proportion of lump ores in blast furnace needs to be controlled within 15%-20%.

Received: 22 December 2015 Published: 29 August 2016

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	Articles by authors
	LIU Jie
	ZHANG Hong-Yu
	ZHOU Meng-Shun
	DI Li-Wei
	ZHANG Hui
	XU Li-Bing

Cite this article:

LIU Jie,ZHANG Hong-Yu,ZHOU Meng-Shun等. Rational burden structure of blast furnace based on softening and melting property[J]. Iron and Steel, 2016, 51(9): 11-15.

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http://www.chinamet.cn/Jweb_gt/EN/10.13228/j.boyuan.issn0449-749x.20150605 OR http://www.chinamet.cn/Jweb_gt/EN/Y2016/V51/I9/11

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