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Raw materials: alumina for refractories. XIETA®

Xieta International, S.L., produces a range of specific aluminas with a great purity characteristic and with a high controlled micro-structure which allows a very small particle size. Such characteristic made these aluminas suitable to apply at refractory products manufacturing, both for shaped refractories and monolithic ones.

The Alumina XT-701, has been specially developed to be used at all refractories aplications (shaped and monolithic ones) which requiring to use XIETA®-TABULAR. Due to the compatibility of both kind of aluminas (Tabular Alumina + Reactive Alumina), becomes a final product with a high purity, a big consistence and a large crystallographic stability.

The Alumina XT-702, due to its extremely purity and its tight particle size distribution (at the range of of 2-3 microns), meanly used for producing low cement content concretes (low cement castable) and very low cement content concretes (ultra low cement castable), to get high-quality refractory products. 

In spite of they have been successfully tested at different types of refractory, these aluminas have been used more often at the monolithic refractory productions.

  • General Properties

      XT- 701    XT-702
    Granolumetry    
    · Primary Crystal Size 1 micron 1 micron
    · Particle Size (D50) 1-2 microns 2-3 microns

    Bulk Density      

    900 – 1100 kg/m3 900 – 1100 kg/m3
    Real Density    (g/cm3)                                       ≥ 3.95  ≥ 3.95
    B.E.T. (m2/g)                                                                                                          3.0 - 3.5 2.0 – 2.5
    Hardness (Mohs)                                                                            9  9
    Calcination Grade                                                                             High High
                                             
  • Chemical Composition

     

    XT- 701

    XT- 702

    Al2O3:

    ≥ 99.3 %

    ≥ 99.5 %

    α-Al2O3:

    ≥ 95 %

    ≥ 95 %

    Na2O:

    ≤ 0.10 %

    ≤ 0.10 %

    Fe2O3:

    ≤ 0.02 %

    ≤ 0.02 %

    SiO2:

    ≤ 0.15 %

    ≤ 0.03 %

    Data and specifications contained in this web may be subject to any change or modification by the manufacturer without notice.

    In case you need any clarification or you have any query, please contact our technical department.



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