Dissection Investigation of Ti(C,N) Behavior in Blast Furnace Hearth during Vanadium Titano-magnetite Smelting

This paper presents a comprehensive study on the behaviors of titanium compounds generated in the blast furnace (BF) hearth during the vanadium titano-magnetite smelting by the dissection method combined with experimental and theoretical analysis. The results show that considerable titanium compound...

Full description

Saved in:
Bibliographic Details
Published inISIJ International Vol. 57; no. 1; pp. 48 - 54
Main Authors Jiao, Kexin, Zhang, Jianliang, Liu, Zhengjian, Kuang, Shibo, Liu, Yanxiang
Format Journal Article
LanguageEnglish
Published The Iron and Steel Institute of Japan 01.01.2017
Subjects
blast furnace
dissection investigation
hearth
thermal conductivity
titanium compounds
vanadium titano-magnetite
Online AccessGet full text

Cover

More Information
Summary:This paper presents a comprehensive study on the behaviors of titanium compounds generated in the blast furnace (BF) hearth during the vanadium titano-magnetite smelting by the dissection method combined with experimental and theoretical analysis. The results show that considerable titanium compounds are formed in the eroded furnace wall below the taphole level. The phases of titanium compounds consist of Ti(C,N) crystals, slag phase and liquid iron. The phase of Ti(C,N) crystals are mainly TiC0.3N0.7. The formation mechanism of titanium compounds is revealed. It is found that the Ti(C,N) phase is formed within hot metal, while the slag phase originates from the interaction between the mineral in coke and final slag in the BF hearth. Furthermore, the slag is confirmed present in the low part of the BF hearth. The thermal conductivity of the titanium compounds in the hearth is determined as 11.98 W/m/K by analyzing the thermodynamic and heat transfer characteristics of the compounds. This prediction is in satisfactory agreement with the measurement.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.ISIJINT-2016-419