Discurso e contexto: Polltica siderrrgica no primeiro governo Vargas (1930-1937) (Speech and Context: Steel-Making Policy in the First Vargas Government (1930-1937))

2014 ◽  
Author(s):  
Gustavo Barros
Keyword(s):  
Steel Making

Steel Making at Ensley, Alabama

1904 ◽  
Vol 58 (1490supp) ◽  
pp. 23870-23870
Author(s):  
Day Allen Willey
Keyword(s):  
Steel Making

Study of Variable Frequency Induction Heating in Steel Making Process

2010 ◽  
Vol 130 (10) ◽  
pp. 1131-1138 ◽  
Author(s):  
Kazuhiko Fukutani ◽  
Kenji Umetsu ◽  
Takeo Itou ◽  
Takanori Isobe ◽  
Tadayuki Kitahara ◽  
...  
Keyword(s):  
Induction Heating ◽  
Variable Frequency ◽  
Steel Making

Repair Welding Procedure for P460NH Grade Steel Making Ladles

2018 ◽  
Vol 51 (2) ◽  
pp. 57
Author(s):  
P. Ashok Kumar ◽  
Nikhil Shajan ◽  
Kanwer S. Arora ◽  
M. Shome
Keyword(s):  
Repair Welding ◽  
Steel Making ◽  
Welding Procedure ◽  
Grade Steel

scholarly journals Evolution of physicochemical properties of quick lime at converter-smelting temperature

2021 ◽  
Vol 40 (1) ◽  
pp. 32-39
Author(s):  
Mengxu Zhang ◽  
Jianli Li ◽  
Zhengliang Xue ◽  
Renlin Zhu ◽  
Qiqiang Mou ◽  
...  
Keyword(s):  
Boundary Migration ◽  
Average Diameter ◽  
Dissolution Behavior ◽  
Grain Boundary Migration ◽  
Average Pore ◽  
Quick Lime ◽  
Volume Stability ◽  
Steel Making ◽  
Dissolution Efficiency ◽  
Lime Reactivity

Abstract The volume stability caused by the hydration of f-CaO is one of the main obstacles to the comprehensive utilization of steel-making slag. In view of the f-CaO produced by incomplete dissolution of lime, it is necessary to strengthen the dissolution behavior of lime in the converter process. The reactivity of lime determines the dissolution efficiency and is closely related to its microstructure. The experimental results show that the reactivity and porosity of quick lime decrease and the average diameter of pore increases with an increase in temperature. The CaO crystals gradually grow up under the action of grain boundary migration. When the temperature increased from 1,350 to 1,600°C, the lime reactivity decreased from 237.60 to 40.60 mL, the porosity decreased from 30.55 to 15.91%, the average pore diameter increased from 159.10 to 1471.80 nm, and the average CaO particle size increased from 0.33 to 9.61 µm. The results indicate that reactivity is decreased because of the deformation and growth of CaO crystals and the decrease in porosity in reactive lime. This will cause an obstacle to the dissolution of lime and is not conducive to the control of f-CaO in slag.

scholarly journals Optimization of the electric efficiency of the electric steel making process

2020 ◽  
Vol 53 (2) ◽  
pp. 11895-11900
Author(s):  
Jesús D. Hernández ◽  
Luca Onofri ◽  
Sebastian Engell
Keyword(s):  
Electric Steel ◽  
Steel Making

scholarly journals Mathematical Modeling of Iron and Steel Making Processes. Modeling of a DC Electric Arc Furnace. Mixing in the Bath.

2001 ◽  
Vol 41 (10) ◽  
pp. 1146-1155 ◽  
Author(s):  
Marco Ramírez ◽  
Jonas Alexis ◽  
Gerardo Trapaga ◽  
Par Jönsson ◽  
John Mckelliget
Keyword(s):  
Mathematical Modeling ◽  
Electric Arc Furnace ◽  
Electric Arc ◽  
Arc Furnace ◽  
Iron And Steel ◽  
Steel Making
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