The grate cooler hot end absorbs clinker drop impact and secondary-air abrasion; heavy-duty steel-fiber wear-resistant castables are widely used.
Problem-by-problem analysis with solutions and recommended refractories
Background The hot end of a grate cooler sits below the cement kiln outlet, directly rec…
Problem Details →Understand the working condition before selecting The cement grate cooler receives clink…
Problem Details →
SiC wear-resistant castable with SiC≥50% aggregate offers extreme hardness and erosion resistance to 1600℃. High thermal conductivity promotes slag-coating self-protection. For CFB boiler cyclone barrels and cones, loop seals, copper flash furnace cones, launders and elbows under heavy wear.
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Steel-fiber reinforced castable with 2-3 vol% heat-resistant stainless fibers provides random reinforcement and toughening. Al₂O₃≥65%, 1400℃ max service, greatly improved flexural and thermal-shock spalling resistance.
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Wear-resistant castable with hard abrasion-resistant aggregate, Al₂O₃≥70%, 1500℃ max service and CCS≥90MPa. Dense matrix resists particulate erosion in gas-solid two-phase flow.
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Low-cement high-alumina castable with CaO≤2.5% and Al₂O₃≥65% reaches 1650℃ service. Dense micro-powder grading lowers porosity and raises hot strength.
Learn More →The rotary kiln burning zone exceeds 1400°C; coating stability determines magnesia brick life, while the transition zone faces thermal shock and mechanical stress.
View Problems & Solutions →Preheater cyclones and the precalciner suffer build-up from alkali/chlorine/sulfur cycles; anti-build-up and wear-resistant linings are key.
View Problems & Solutions →The kiln hood connects the rotary kiln and grate cooler; suspended roof structure and side-wall thermal shock resistance drive maintenance.
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