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Physical and chemical properties of refractories for Iron ladle
1£©Permanent layer - Pyrophyllite brick

Test Item Physical properties Chemical properties
Apparent porosity 
/%
Bulk density /(g/cm3) CCS 
/MPa
SiO2
/%
K2O+Na2O
/%
Fe2O3
/%
Test condition 110°ś×24h 110°ś×24h 110°ś×24h
Pyrophyllite brick ≤17 ≥2.18 ≥25.0 ≥80.0 ≤0.8 ≤1.00

 

2£©Slag line area - Al2O3-SiC-C brick

Test Item Physical properties Chemical properties
Apparent porosity
/%
Bulk density /(g/cm3) CCS 
/MPa
Al2O3
/%
SiC 
/%
F.C 
/%
Test condition 110°ś×24h 110°ś×24h 110°ś×24h
Al2O3-SiC-C brick ≤10 ≥2.80 ≥40.0 ≥60.0 ≥4.0 ≥10.0

 

3£©Molten iron zone°ĘNon-impact zone - Al2O3-SiC-C brick

Test Item Physical properties Chemical properties
Apparent porosity
/%
Bulk density /(g/cm3) CCS 
/MPa
Al2O3
/%
SiC 
/%
F.C 
/%
Test condition 110°ś×24h 110°ś×24h 110°ś×24h
Al2O3-SiC-C brick ≤10 ≥2.70 ≥35.0 ≥54.0 ≥4.0 ≥9.0

 

4£©Impact zone - Al2O3-SiC-C brick

Test Item Physical properties Chemical properties
Apparent porosity 
/%
Bulk density /(g/cm3) CCS 
/MPa
Al2O3
/%
SiC 
/%
F.C 
/%
Test condition 110°ś×24h 110°ś×24h 110°ś×24h
Al2O3-SiC-C brick ≤10 ≥2.65 ≥35.0 ≥48.0 ≥4.0 ≥9.0

5£©Ladle edge - Al2O3-SiC-C castable

Test Item Physical properties Chemical properties
Apparent porosity 
/%
Bulk density
 /(g/cm3)
Al2O3
/%
SiC 
/%
Test condition 110°ś×24h 110°ś×24h
Al2O3-SiC-C castable ≤20 ≥2.40 ≥60.0 ≥5.0

6£©Insulating layer - Insulation board

Test Item Physical properties Chemical properties
Apparent porosity 
/%
Bulk density
 /(g/cm3)
MgO+SiO2
/%
Test condition 110°ś×24h 110°ś×24h
Insulation board ≥40 ≤1.45 ≥50.0