Premium
Effect of Hot Metal Utilization on the Steelmaking Process Parameters in the Electric Arc Furnace
Author(s) -
Lee Baek,
Ryu Jae Wook,
Sohn Il
Publication year - 2015
Publication title -
steel research international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.603
H-Index - 49
eISSN - 1869-344X
pISSN - 1611-3683
DOI - 10.1002/srin.201400157
Subject(s) - steelmaking , decarburization , tap water , electric arc furnace , scrap , oxygen , materials science , metallurgy , slag (welding) , basic oxygen steelmaking , metal , chemistry , environmental science , organic chemistry , environmental engineering
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 Nm 3 h −1 and was fully developed at 10 000 Nm 3 h −1 .