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Cement Industry

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Kiln / Cooler / Pre-Heater / Cyclone

The cement process subjects refractories to continuous abrasion, alkali vapour attack, thermal shock, clinker infiltration and reducing atmosphere exposure. Each area of the plant demands a different monolithic design based on temperature gradient, dust load, rotation speed, CO level and chemical volatility.

Steel Plants

Cement Rotary Kiln ( Preheating → Burning Zone → Discharge )

Zone Dominant Failure Mechanism Thermlyte Refractory Approach
  • Inlet & Preheating Zone
  • Transition Zone
  • Burning Zone
  • Inlet Chamber / String Junctions
  • Inlet Chamber / String Junctions
  • Alkali vapours + high dust abrasion
  • Dust velocity + thermal shock
  • Localised hot spots
  • Localised hot spots
  • Localised hot spots
  • Low porosity LC castables, SiC if heavy erosive
  • Abrasion + thermal shock balanced grades
  • Dense monolithics with high spalling resistance
  • Dense monolithics with high spalling resistance
  • Dense monolithics with high spalling resistance

Preheater & Calciner

Component Stress Factor Refractory Selection Strategy
  • Riser Duct
  • Cyclones (Stages 1–5)
  • Inlet Chamber / String Junctions
  • Alkali vapours + high dust abrasion
  • Dust velocity + thermal shock
  • Localised hot spots
  • Low porosity LC castables, SiC if heavy erosive
  • Abrasion + thermal shock balanced grades
  • Dense monolithics with high spalling resistance

Clinker Cooler ( Grate / Static / Hybrid )

Component Stress Factor Refractory Selection Strategy
  • Riser Duct
  • Cyclones (Stages 1–5)
  • Inlet Chamber / String Junctions
  • Alkali vapours + high dust abrasion
  • Dust velocity + thermal shock
  • Localised hot spots
  • Low porosity LC castables, SiC if heavy erosive
  • Abrasion + thermal shock balanced grades
  • Dense monolithics with high spalling resistance

Tertiary Air Duct / COC / Lining Ducts

  • High velocity dust + alkali chloride condensation.
  • Recommended: Low porosity, alkali-proof LC mixes.
  • Gunning grades suitable where fast shutdown turnaround is required.
  • Enhanced thermal shock resistance for frequent temperature cycling.
  • High bonding strength for durable repairs and longer lining life.
Steel Plants


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