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首页> 外文期刊>ISIJ international >Effect of Introducing Coke into Ore Layer on Softening-melting-dropping Characteristics of Vanadium-titanium Mixed Burden under Simulating BF Conditions
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Effect of Introducing Coke into Ore Layer on Softening-melting-dropping Characteristics of Vanadium-titanium Mixed Burden under Simulating BF Conditions

机译:在模拟高炉条件下将焦炭引入矿石层对钒钛混合料软化熔滴特性的影响

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摘要

Coke-ore mixed charging is a well-known and effective measure to strengthen BF operation and realize low reducing agent BF ironmaking. The objective of this paper is to investigate the effect of coke-ore mixing ratio on softening-melting dropping performance and permeability of vanadium-titanium mixed burden and to clarify the interaction mechanism between mixed nut coke and iron-bearing burden under BF simulating conditions. It was found that the softening-melting-dropping behaviors and permeability of mixed burden get improved obviously with a coke-ore mixing ratio of 20%. However, the generation of carbide of V and Ti would be accelerated with further increasing coke-ore mixing ratio to 50%, which would deteriorate the fluidity of slag and worsen the dropping behavior of mixed burden and lower the yield of V in liquid iron. The interaction between nut coke and vanadium-titanium mixed burden could be summarized as four parts, namely reduction strengthen, carburization promotion, permeability improvement, and the precipitation of the carbide of titanium.
机译:焦炭混合装料是增强高炉操作并实现低还原剂高炉炼铁的有效措施。本文的目的是研究焦炭混合比对钒钛混合料软熔滴性能和渗透性的影响,并阐明高炉模拟条件下混合螺母焦与含铁负荷之间的相互作用机理。结果表明,焦炭混合比为20%时,混合料的软熔滴落性能和渗透性得到明显改善。然而,随着焦炭-矿石混合比进一步增加到50%,V和Ti的碳化物的生成将被加速,这将使矿渣的流动性恶化,并使混合物料的滴落行为恶化,并降低铁水中V的产率。坚果焦炭和钒钛混合物料之间的相互作用可归纳为四个部分,即还原强化,渗碳促进,渗透性改善和钛碳化物的析出。

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