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DuraSafe Star™

DuraSafe Star™

Product description:  
Mullite/corundum
Specification:   Pressed/high-fired
Main use:   Safety lining for steel casting ladles
VOD/VD treatment
Ladle furnaces
High thermal load

Typical physical values

Guide value Norm Unit Typical Application
Bulk density DIN EN 993 - 1 g/cm³ 2,9  
Open porosity DIN EN 993 - 1 Vol. % 17  
Cold crushing strength DIN EN 993 - 5 MPa 90  
Cold modulus of rupture DIN EN 993 - 6 MPa 10  
RUL DIN EN ISO 1893 °C > 1700 T 0,5
CO resistance ASTM C288 --- Class A  
Thermal expansion DIN EN 993 - 19 % 0,7 at 1000 °C
Thermal conductivity DIN EN 993 -15 W/mK 2,8 at 800°C and 1200°C

Typical chemical values

  Unit Typical
Al2O3 % ≥ 85
SiO2 % 14
Fe2O3 % < 0,2

 

Chemically pure raw-materials

Chemically inert

No free SiO2!

The SiO2 is bonded as mullite

Why DuraSafe StarTM

 

One single shape with 3 mm wedge for round and oval steel casting ladles.

Liquid steel capacity from 80 to 400 t.

 

Available in different thicknesses as well as 76 mm.
     

 

Peripheral tongue & groove for:

  • Optimal joint sealing
  • Best protection against backflow
  • Best mechanical stability
  • Consistency
     
 

DuraSafe StarTM for:

  • Very good thermal shock resistance
  • Long service life, consistency
  • Break out safety
leading to
  • Reduced maintenance costs
  • Higher availability
  • Cost savings
Durable safety!
     
   

Wall design:

     
 

DuraSafe StarTM in use:

High-fired, inert → dense surface → less C infiltration