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Physical and chemical properties of refractories for torpedo car
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 ≥2.83 ≥35.0 ≥65.0 ≥5.0 ≥11.0

3£©Molten iron 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 ≥2.85 ≥40.0 ≥65.0 ≥5.0 ≥10.0

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 ≥2.85 ≥40.0 ≥60.0 ≥6.0 ≥8.0

5£©Jar edge - Corundum-mullite castable


Test Item
Physical properties Chemical properties
Bulk density /(g/cm3) CMOR
/MPa
Al2O3
/%
Test condition 110°ś×24h 110°ś×24h
Corundum-mullite castable ≥2.65 ≥4.0 ≥60.0

6£©Security layer - High aluminum coating material


Test Item
Physical properties Chemical properties
Bulk density /(g/cm3) CCS
/MPa
Al2O3
/%
Test condition 110°ś×24h 110°ś×24h
High aluminum coating material ≥2.00 ≥15.0 ≥50.0