Effect of hot metal utilization on the steelmaking process parameters in the electric arc furnace

Baek Lee, Jae Wook Ryu, Il Sohn

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

The effect on the electric arc furnace steelmaking process parameters by hot metal utilization from 41 to 75% in a 150 ton/ch furnace has been investigated. Process parameters including oxygen lancing, accumulated power consumption, and tap-to-tap times were evaluated. An increase in the HMR (hot metal ratio) can decrease the accumulated power consumption, but to maintain the tap-to-tap times, oxygen injection into the melt must be significantly increased. Utilizing an optimized oxygen injection pattern, scrap-melting rate was increased and the tap-to-tap times as a function of HMR variations from 0.41 to 0.75 at fixed oxygen lancing showed a 0.45 min ton-1 hot metal decrease in the tap-to-tap time. At HMR of 0.61 the decarburization rate linearly increased with higher oxygen lancing. Visual inspection of the slag foaming with the modified oxygen injection practice showed initial foaming above 6000 Nm3 h-1 and was fully developed at 10 000 Nm3 h-1. Hot metal additions into a 150 ton DC-EAF is studied. 1700 kWh of accumulated power consumption is decreased for every ton of hot metal utilized. Oxygen lancing practices is modified with hot metal additions in the EAF without increasing the tap-to-tap times. At hot metal additions of above 0.6, the decarburization rate linearly increases with oxygen lancing.

Original languageEnglish
Pages (from-to)302-309
Number of pages8
JournalSteel Research International
Volume86
Issue number3
DOIs
Publication statusPublished - 2015 Mar 1

Fingerprint

electric arcs
Electric arcs
Steelmaking
taps
furnaces
Furnaces
Metals
Oxygen
metals
oxygen
decarburization
Decarburization
foaming
Electric power utilization
injection
Steelmaking furnaces
scrap
slags
Slags
inspection

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

Cite this

@article{9e4fbdaba11544dda495d82cfca461cd,
title = "Effect of hot metal utilization on the steelmaking process parameters in the electric arc furnace",
abstract = "The effect on the electric arc furnace steelmaking process parameters by hot metal utilization from 41 to 75{\%} in a 150 ton/ch furnace has been investigated. Process parameters including oxygen lancing, accumulated power consumption, and tap-to-tap times were evaluated. An increase in the HMR (hot metal ratio) can decrease the accumulated power consumption, but to maintain the tap-to-tap times, oxygen injection into the melt must be significantly increased. Utilizing an optimized oxygen injection pattern, scrap-melting rate was increased and the tap-to-tap times as a function of HMR variations from 0.41 to 0.75 at fixed oxygen lancing showed a 0.45 min ton-1 hot metal decrease in the tap-to-tap time. At HMR of 0.61 the decarburization rate linearly increased with higher oxygen lancing. Visual inspection of the slag foaming with the modified oxygen injection practice showed initial foaming above 6000 Nm3 h-1 and was fully developed at 10 000 Nm3 h-1. Hot metal additions into a 150 ton DC-EAF is studied. 1700 kWh of accumulated power consumption is decreased for every ton of hot metal utilized. Oxygen lancing practices is modified with hot metal additions in the EAF without increasing the tap-to-tap times. At hot metal additions of above 0.6, the decarburization rate linearly increases with oxygen lancing.",
author = "Baek Lee and Ryu, {Jae Wook} and Il Sohn",
year = "2015",
month = "3",
day = "1",
doi = "10.1002/srin.201400157",
language = "English",
volume = "86",
pages = "302--309",
journal = "Steel Research International",
issn = "1611-3683",
publisher = "Wiley-VCH Verlag",
number = "3",

}

Effect of hot metal utilization on the steelmaking process parameters in the electric arc furnace. / Lee, Baek; Ryu, Jae Wook; Sohn, Il.

In: Steel Research International, Vol. 86, No. 3, 01.03.2015, p. 302-309.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Effect of hot metal utilization on the steelmaking process parameters in the electric arc furnace

AU - Lee, Baek

AU - Ryu, Jae Wook

AU - Sohn, Il

PY - 2015/3/1

Y1 - 2015/3/1

N2 - The effect on the electric arc furnace steelmaking process parameters by hot metal utilization from 41 to 75% in a 150 ton/ch furnace has been investigated. Process parameters including oxygen lancing, accumulated power consumption, and tap-to-tap times were evaluated. An increase in the HMR (hot metal ratio) can decrease the accumulated power consumption, but to maintain the tap-to-tap times, oxygen injection into the melt must be significantly increased. Utilizing an optimized oxygen injection pattern, scrap-melting rate was increased and the tap-to-tap times as a function of HMR variations from 0.41 to 0.75 at fixed oxygen lancing showed a 0.45 min ton-1 hot metal decrease in the tap-to-tap time. At HMR of 0.61 the decarburization rate linearly increased with higher oxygen lancing. Visual inspection of the slag foaming with the modified oxygen injection practice showed initial foaming above 6000 Nm3 h-1 and was fully developed at 10 000 Nm3 h-1. Hot metal additions into a 150 ton DC-EAF is studied. 1700 kWh of accumulated power consumption is decreased for every ton of hot metal utilized. Oxygen lancing practices is modified with hot metal additions in the EAF without increasing the tap-to-tap times. At hot metal additions of above 0.6, the decarburization rate linearly increases with oxygen lancing.

AB - The effect on the electric arc furnace steelmaking process parameters by hot metal utilization from 41 to 75% in a 150 ton/ch furnace has been investigated. Process parameters including oxygen lancing, accumulated power consumption, and tap-to-tap times were evaluated. An increase in the HMR (hot metal ratio) can decrease the accumulated power consumption, but to maintain the tap-to-tap times, oxygen injection into the melt must be significantly increased. Utilizing an optimized oxygen injection pattern, scrap-melting rate was increased and the tap-to-tap times as a function of HMR variations from 0.41 to 0.75 at fixed oxygen lancing showed a 0.45 min ton-1 hot metal decrease in the tap-to-tap time. At HMR of 0.61 the decarburization rate linearly increased with higher oxygen lancing. Visual inspection of the slag foaming with the modified oxygen injection practice showed initial foaming above 6000 Nm3 h-1 and was fully developed at 10 000 Nm3 h-1. Hot metal additions into a 150 ton DC-EAF is studied. 1700 kWh of accumulated power consumption is decreased for every ton of hot metal utilized. Oxygen lancing practices is modified with hot metal additions in the EAF without increasing the tap-to-tap times. At hot metal additions of above 0.6, the decarburization rate linearly increases with oxygen lancing.

UR - http://www.scopus.com/inward/record.url?scp=84924339422&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84924339422&partnerID=8YFLogxK

U2 - 10.1002/srin.201400157

DO - 10.1002/srin.201400157

M3 - Article

AN - SCOPUS:84924339422

VL - 86

SP - 302

EP - 309

JO - Steel Research International

JF - Steel Research International

SN - 1611-3683

IS - 3

ER -