The aim of this study was to investigate the mechanical characteristics, microstructural properties, and environmental impact basic oxygen furnace (BOF) slag-treated clay in South Korea. Mechanical characteristics were determined via expansion, vane shear, unconfined compression tests according various curing times. Scanning electron microscopy conducted analyze properties. Furthermore, impacts...

Abstract—The off-gas from the basic oxygen furnace (BOF), where pig iron is converted into steel, is treated in the primary ventilation system. This system is in full operation only during oxygen-blowing when the BOF converter vessel is in a vertical position. When pig iron and scrap are charged into the BOF and when slag or steel are tapped, the vessel is tilted. The generated emissions during...

În acest studiu, zgură de cuptor cu arc electric (EAFS) colectată de la Sovel S.A., Grecia şi calcar şi argilă, de la compania de ciment Titan S.A., Grecia, au fost utilizate pentru producerea şi caracterizarea cimenturilor tip belitice. Trei tipuri de clincher au fost preparate: belitic fara adaos de zgură folosit ca referinţă (BC), unul cu 5wt% EAFS (BC5) şi un altul cu 10wt% EAFS (BC10). Ana...

The phosphorus partition between the unkilled liquid crude steel and high basicity (CaO/SiO2 = 4.2), basic oxygen furnace (BOF) slags with varying compositions of Al2O3, TiO2, MnO is studied at temperatures 1600 1650 °C. tests are conducted in both “slag-to-metal” “metal-to-slag” directions for durations 30 60 min. measured results compared values reported literature found to be good agreement ...

Considerable work has been done on the development of advanced process control for the Electric Arc Furnace (EAF) steelmaking process. Historically, many control systems have been employed which rely on static heat balance calculations coupled with power input profiles to generate recipe driven control models. Steelmakers have desired to have continuous information about the gases exiting the f...

The booming Asian economies are driving the recent increase in steel production. Although BOF steel production growth is much stronger than EAF, the outlook for EAF is promising due to increasing substitution of steel scrap by DRI and pig iron, as well as an increase in electrical energy supply in China. The favorable operational reliability of AC-furnaces is the reason that most new furnace pr...

The effect of acidic conditions (in a pH range of 3 to 6) and temperature on the kinetics of the hydrothermal oxidation of ferrous iron contained in BOF steel slag has been tested in the 150–350C range for acid acetic concentrations from 0 to 4M. Reaction progress was monitored with the amount of produced H2. Higher temperature and lower pH are found to enhance the hydrothermal oxidation kineti...