Analysis of Vanadium-Bearing Titanomagnetite Sintering Process by Dissection of Sintering Bed

Many problems appear in the sintering process of vanadium-bearing titanomagnetite, such as high energy consumption and low productivity; sinter quality is also very poor for its low tumble strength and high reduction degradation. Sinter productivity and quality are dominated by bed permeability and...

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Bibliographic Details
Published inJournal of iron and steel research, international Vol. 18; no. 6; pp. 8,36 - 15,36
Main Authors BAI, Yong-qiang, CHENG, Shu-sen, BAI, Yan-ming
Format Journal Article
LanguageEnglish
Published Singapore Elsevier Ltd 01.06.2011
Springer Singapore
Subjects
Applied and Technical Physics
bed dissection
Degradation
Dissection
Engineering
Iron and steel industry
Machines
Manufacturing
Materials Engineering
Materials Science
Metallic Materials
Mineralogy
mineralogy characteristic
Physical Chemistry
Processes
Productivity
Reduction
Sinter
Sintering
thermal state
vanadium-bearing titanomagnetite
mineralogy characteristic
bed dissection
sintering
vanadium-bearing titanomagnetite
thermal state
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Summary:Many problems appear in the sintering process of vanadium-bearing titanomagnetite, such as high energy consumption and low productivity; sinter quality is also very poor for its low tumble strength and high reduction degradation. Sinter productivity and quality are dominated by bed permeability and mineralogy structure, which are highly influenced by the thermal state of sintering bed, so the sintering process of titanomagnetite is researched by bed dissection in this work. Temperature evolution curves of sinter materials were measured, and the results show that melting duration, peak temperature duration and sintering temperature of different layers differ greatly from each other; flame front speed and vertical sintering speed of bed lower region are much smaller than those of bed upper region. Simultaneously, sinter samples were collected from different layers, and their mineralogy characteristics are analyzed; sinters from bed lower region have poor mineralogy structure, and the amounts of perovskite and dicalcium silicate increase intensively, which are bad for sinter strength and reduction degradation property. Measures are proposed to improve the quality and productivity of titanomagnetite sinter.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:1006-706X
2210-3988
DOI:10.1016/S1006-706X(11)60070-8