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Raw materials requirement for tunnel kiln DRI

作者:1 發(fā)布時(shí)間:2010-04-03 文字大?。?span id="da">【大】【中】【小】
 
raw materials requirement for tunnel kiln DRI
Concentrated iron
TFe
SiO2+Al2O3
CaO
MgO
matrix
≥66.5%
≤5.5%
≤2.5%
≤1.5%
≤8%
S
P
wet
 
 
≤0.06%
≤0.06%
≤10%
 
 
anthracite 
fixed carbon
volatile
ash
S
ash melting temperature
≥60%
≤10%
<25%
<1.0%
≥1250℃
水分
limestone
CaO
 
 
<15%
≥50%
 
 
coal for gas stove  
weak sticking
size
30-50mm
powder
≤5%