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ORATAB
High Purity Tabular Alumina Castables

Oratab 94 and Oratab 97 are high purity White Tabular Alumina based castables meant for critical applications in fertiliser, refinery, petrochemical and steel industries. These castables can withstand service temperature upto 1850șC in carbon monoxide and hydrogen atmospheres. These castables have high bulk density, high mechanical strength at all temperatures, excellent workability, good abrasion resistance, excellent resistance to thermal spalling and good volume stability.

 
    BRANDS Oratab - 94 Oratab - 97
    Chemical Analysis
Al2 O3 % min. 94 96
Fe2O3 % max. 0.3 0.3
SiO2 % max. 0.3 0.3
CaO % max. 5.0 2.8
    Physical Properties
   Service Temp șC 1800 1850
   Bulk density, gms / cc 2.80 2.80
   Water required for casting % 8.5 - 9.5 8.5 - 9.5
   Grain size,mm 5 5
    CCS , Kgs / cm2
   at 110 oC/24 hrs. 600 400
   at 800 o C/3 hrs 450 280
   at 1100 o C/3 hrs. 400 250
   at 1500 o C/3 hrs. 700 400
    Thermal Properties
     PLC,%
    after heating at 800 oC/3hrs ± 0.2 ± 0.1
    after heating at 1100 oC/3hrs ± 0.2 ± 0.2
    after heating at 1450 oC/3hrs ± 0.5 ± 0.8
  Thermal Conductivity, kcal/m/hr/ oC
    at 300 o C/3 hrs. 1.37 1.4
    at 500 o C/3 hrs. 1.40 1.43
    at 800 o C/3 hrs. 1.42 1.46
Packaging : 25 Kgs Bags
Storage Life: 9 Months water proof weather conditions.

The above data represents typical average properties and does not constitute a specification.

 
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