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Blast Furnace

SPECIFICATION

Quality KA BF 95 AL KA BF 90 AL KA BF 90 ACR KA BF 90 SIC KA BF 75 SIN
Physical Properties Refractoriness (SK) 40< 40< 40< - -
AP (%) 16 13 15 14 14
BD (g/cm3) 3.25 3.15 3.2 2.66 2.61
CCS (kg/cm2) 1200 2000 1500 2100 1800
TE (%) @ 1000℃ 0.72 0.72 0.74 0.43 0.42
PLC (%) @ 1500℃ - - - - -
@ 1650℃ 0 0 0
RUL (2kg/cm2,T2℃) 1700<T1 1700<T1 1700<T1 1700 1700
TC (kcal/m.hr.℃) @ 200℃ - - - 16 15
@ 1000℃ 2.7 2.8 2.6 - -
Chemical Properties (%) Al2O3 99 93 89 - -
SiC - - - 90 77
Si3N4 - - - - 16
Cr2O3 - - 10 - -
Fe2O3 0.1 0.3 0.1 0.2 0.2
MgO - - - - -
Main Application Bosh, Belly Bosh, Belly, Tuyere, Shaft

Quality KA BF 20 SIC KA BF 70 AL KA BF 72 AL KA BF 65 AL KA BF 60 AL
Physical Properties Refractoriness (SK) - 37 38 37 36
AP (%) 15 14 15 14 15
BD (g/cm3) 2.82 2.6 2.62 2.6 2.52
CCS (kg/cm2) 1100 1200 900 1100 500
TE (%) @ 1000℃ 0.47 0.48 0.55 0.53 0.42
PLC (%) @ 1500℃ - 0 0 0 0
@ 1650℃ - - - -
RUL (2kg/cm2,T2℃) 1700 1650 1650 1650 1650
TC (kcal/m.hr.℃) @ 200℃ 4.5 1.6 1.6 1.5 1.5
@ 1000℃ - - - - -
Chemical Properties (%) Al2O3 68 70 72 65 63
SiC 19 - - - -
Si3N4 - - - - -
Cr2O3 - - - - -
Fe2O3 - - 1.1 0.9 1.0
MgO - - - - 1.2
Main Application Runner Outside Ceramic Cup,
Pad
Tuyere,
Tap hole
Upper Shaft Stave
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