SioxX® is designed for microsilica-containing low-cement, ultra-low cement castables and gel bonding systems. It enhances the rheological properties, reduces the water demand and increases the flow.


  • Tailor-made products for microsilica- containing castables
  • Reproducible wet-out, flow and set-time
  • Easy to dose
  • Easy to disperse in the dry and wet mix
  • Robustness of mix through compatibility with other raw materials (calcined aluminas, cements, ...)
  • Flexibility to work with various locally available systems (bauxite, mulcoa, andalusite, ...)


  • low-cement, ultra-low cement castables
  • gel bonding systems


The product is available in 20 kg small bags. Please contact our sales representative for more details. 

Storage conditions

Store in the original packaging (or re-seal opened packages) under dry conditions above 0°C. Shelf-life (best before): 12 months from the date of production, if stored properly.

Technical data
Appearance    Grey powder
Bulk density kg/m3 400-600
pH-value (10% solution)   5-7
SiO2 %w/w 60-70
Al2O3 %w/w  20-30

Dosage recommendation: 1-3 %w/w (of castable)

Test methods

Test methods are available upon request