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What is High Alumina Castable?

High alumina refractory castables, also named as  high alumina castables, appears to be like powder or sand. Basically a certain portion of binders is added into the raw material to make the castable. The product have a high fluidity, so they can be shaped into any forms through casting, and this is why it is called “castable”.

low cement castalbe for saleProperties of High Alumina Castable

  1. high density
  2. low porosity rate
  3. good hot strength
  4. high refractories
  5. high refractoriness under load
  6. strong mechanical spalling resistance
  7. shock resistance and corrosion resistance

Application of High Alumian Castable

This product is widely used in thermal equipments, heating furnace in metallurgical industry, boilers in electricity industry, and building material industry furnace.

Physical and Chemical of High Alumina Castable

Items RSGLJ-1 RSGLJ-2
Al2O3           % 65 75
Refractoriness     °C 1750 1770
Linear Dimensional Change   % -0.02 -0.4
Cold CrushingStrength MPa  ≥ 110°C×24h 50 60
1100°C×4h 60 70
Breaking Strength MPa ≥ 110°C×24h 9 11
1100°C×4h 10 12
Maximum Service Temperature  °C 1200 1400

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