Hierro y Acero Edicion 45 | Page 19

Rendimiento Metálico vs Arrabio Líquido
% FeO en Escoria del EAF vs Arrabio Líquido
Eaf's Process Variables
Process Unit 100% DRI Hot Metal Difference
Heats # 5349 535
Power On Min/heat 61.7 44.4 -17.4
Melting rate Ton/min 4.2 5.7 1.5
DRI Ton/heat 261.0 194.5
Liquid Pig iron Ton/heat 0.0 59.6
Total Metallics Ton/heat 261.0 254.1
Liquid Steel Ton/heat 211.4 209.4
Metallic Yield % 81.0 82.4 1.4
Oxygen Nm3/heat 5701.4 7864.8
Oxygen Nm3/Tls 27.1 37.6 10.5
Coke Ton/heat 0.8 0.2
Graphite Kg/heat 110.6 147.0
Burnt Lime Ton/heat 9.3 8.1
Dolomitic Lime Ton/heat 6.2 6.5
Refract. Waste Ton/heat 0.4 0.1
Total Fluxes Ton/heat 15.9 14.7 -1.2
Total Fluxes Kg/Tls 75.3 70.2 -5.1
Electrical Energy Mwh/Heat 133.0 92.2
Electrical Energy Kwh/Tls 628.7 439.4 -189.2
EAF's Tapping T°C °C 1648.2 1646.1
EAF's Tapping ppm[O] # 930.0 942.0
%C % 0.062 0.067
%P % 0.010 0.010
%S % 0.014 0.022 0.008
CaO % 29.0 31.6
SiO2 % 15.0 15.4
MgO % 6.8 6.6
FeO % 36.2 31.0 -5.2
Basicity # 2.0 2.1
Resultados
La tabla de resultados muestra una comparación