Dissection investigation of Ti(C,N) behavior in blast furnace hearth during vanadium titano-magnetite smelting

Kexin Jiao, Jianliang Zhang, Zhengjian Liu, Shibo Kuang, Yanxiang Liu

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)48-54
Number of pages7
JournalISIJ International
Volume57
Issue number1
DOIs
Publication statusPublished - 2017

Keywords

  • Blast furnace
  • Dissection investigation
  • Hearth
  • Thermal conductivity
  • Titanium compounds
  • Vanadium titano-magnetite

Cite this

Jiao, Kexin ; Zhang, Jianliang ; Liu, Zhengjian ; Kuang, Shibo ; Liu, Yanxiang. / Dissection investigation of Ti(C,N) behavior in blast furnace hearth during vanadium titano-magnetite smelting. In: ISIJ International. 2017 ; Vol. 57, No. 1. pp. 48-54.
@article{368682731dad4cb98f4e55cf8853a5f4,
title = "Dissection investigation of Ti(C,N) behavior in blast furnace hearth during vanadium titano-magnetite smelting",
abstract = "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.",
keywords = "Blast furnace, Dissection investigation, Hearth, Thermal conductivity, Titanium compounds, Vanadium titano-magnetite",
author = "Kexin Jiao and Jianliang Zhang and Zhengjian Liu and Shibo Kuang and Yanxiang Liu",
year = "2017",
doi = "10.2355/isijinternational.ISIJINT-2016-419",
language = "English",
volume = "57",
pages = "48--54",
journal = "ISIJ International",
issn = "0915-1559",
number = "1",

}

Dissection investigation of Ti(C,N) behavior in blast furnace hearth during vanadium titano-magnetite smelting. / Jiao, Kexin; Zhang, Jianliang; Liu, Zhengjian; Kuang, Shibo; Liu, Yanxiang.

In: ISIJ International, Vol. 57, No. 1, 2017, p. 48-54.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Dissection investigation of Ti(C,N) behavior in blast furnace hearth during vanadium titano-magnetite smelting

AU - Jiao, Kexin

AU - Zhang, Jianliang

AU - Liu, Zhengjian

AU - Kuang, Shibo

AU - Liu, Yanxiang

PY - 2017

Y1 - 2017

N2 - 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.

AB - 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.

KW - Blast furnace

KW - Dissection investigation

KW - Hearth

KW - Thermal conductivity

KW - Titanium compounds

KW - Vanadium titano-magnetite

UR - http://www.scopus.com/inward/record.url?scp=85012071175&partnerID=8YFLogxK

U2 - 10.2355/isijinternational.ISIJINT-2016-419

DO - 10.2355/isijinternational.ISIJINT-2016-419

M3 - Article

VL - 57

SP - 48

EP - 54

JO - ISIJ International

JF - ISIJ International

SN - 0915-1559

IS - 1

ER -