Effect of MgO content in sinter on the softening-melting behavior of mixed burden made from chromium-bearing vanadium-titanium magnetite

The effect of sinter with different MgO contents on the softening-melting behavior of mixed burden made from chro- mium-bearing vanadium-titanium magnetite was investigated. The results show that with increasing MgO content in the sinter, the softening interval and melting interval increased and the...

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Bibliographic Details
Published in:International journal of minerals, metallurgy and materials metallurgy and materials, 2016, Vol.23 (1), p.25-32
Main Authors: Liu, Zheng-gen, Chu, Man-sheng, Wang, Hong-tao, Zhao, Wei, Xue, Xiang-xin
Format: Article
Language:English
Subjects:
Blast furnace iron mixers
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Chromium
Composites
Corrosion and Coatings
Glass
Intervals
Magnesium oxide
Magnetite
Materials Science
Melting
Melting points
Metallic Materials
Metallurgy
MgO含量
Natural Materials
Recovery
Sinter
Slag
Softening
Surfaces and Interfaces
Thin Films
Titanium
Tribology
Vanadium
含铬
氧化镁含量
烧结混合料
烧结矿
熔融行为
软化
钒钛磁铁矿
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Summary:The effect of sinter with different MgO contents on the softening-melting behavior of mixed burden made from chro- mium-bearing vanadium-titanium magnetite was investigated. The results show that with increasing MgO content in the sinter, the softening interval and melting interval increased and the location of the cohesive zone shifted downward slightly and became moderately thicker. The softening-melting characteristic value was less pronounced when the MgO content in the sinter was 2.98wt%-3.40wt%. Increasing MgO content in the sinter reduced the content and recovery of V and Cr in the dripped iron. In addition, greater MgO contents in the sinter resulted in the generation of greater amounts of high-melting-point components, which adversely affected the permeability of the mixed burden. When the softening-melting behavior of the mixed burden and the recovery of valuable elements were taken into account, proper MgO con- tents in the sinter and slag ranged from 2.98wt% to 3.40wt% and from 11.46wt% to 12.72wt%, respectively, for the smelting of burden made from chromium-bearing vanadium-titanium magnetite in a blast furnace.
ISSN:1674-4799
1869-103X
DOI:10.1007/s12613-016-1207-2