Installation Methods: Part 1: Understanding Types of Refractories
Installation Methods: Part 2: Types of Installation Methods of Monolithics/Castables

Types of Refractory Castables

Castable Refractory Classifications

  • Conventional / Regular Castable =>2.5% CaO
  • Low Cement = 1.0% to 2.5% CaO
  • Ultra-Low Cement = 0.2% to 1.0% CaO
  • No Cement Castables = up to 0.2% CaO

No Cement

  • Castables and gun mixes based on colloidal silica and phosphate-based binders
Brands Names: EZ EST (Colloidal Silica Bonded) and Rescobond (Phosphate Bonded)



      Basic Castables and Gun Mixes

      • 95 to 97% MgO-based; Dead Burned Magnesia
      • Chrome Ore-Based
      • Fused magnesia-Chrome Grain-Based
      • Chemically Bonded
      • Phosphate Bonded
      • Silicate Bonded
Brand Names: Permanente, Rescomag, Permagun, Permacast, CP-40


      Lightweight or Insulating Castables

      • Can be cast, gunned, or pumped
      • Cement bonded
      • Contain lightweight aggregate
      • Densities range 20 pcf to 90 pcf
      • Gunned densities higher than cast density
Brand Names: Rescocast, Rescolite, Quiklite



      Precast Shapes

      • Cast into molds and shipped as a shape
      • 45% to 98% alumina, alumina resistant
      • Cement bonded
      • Many different shapes
Brand Names: Uniform, Furnaform, Mighty Fibre, Mighty Agg

Plastic Moldables

  • Phosphate bonded (50% to 90% Alumina)
  • Air Setting (45% to 90% Alumina)
  • Fine-Grained for Patching
Brand Names: Rescoram, Ref Ram, Ref Patch, Corpatch


Gunning Mixes

  • Sprayable” using compressed air
  • 45% to 94% Alumina
  • Magnesite, Fused Magnesia-Chrome
  • Phosphate Bonded, Colloidal silica Bonded
  • Cement Bonded: High Cement, Low Cement
Brand Names: HM, Progun, Rescobond G, Permacast, Permagun, Rescocast, QuikTurn G, EZ EST



Wet Mortars in Pails

  • Air setting and phosphate bonded
  • 60% to 90% silica
  • 45% to 90% alumina, alumina-chrome
Brand Names: Ladlelock Rescoset, Adament – Adacore – Adaphos



Dry Mortars in Bags

  • Air setting, 40% to 85% alumina
  • Heat setting, 33% to 60% alumina
  • Basic (Magnesite or Chrome Ore)
Brand Names: Lo Set Alutab Metaldam (Alumina)

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