The kiln hood connects the rotary kiln and grate cooler; suspended roof structure and side-wall thermal shock resistance drive maintenance.
Problem-by-problem analysis with solutions and recommended refractories
Spalling-resistant high-alumina brick introduces ZrO₂ (3-6%) for transformation and microcrack toughening. Al₂O₃≥70%, thermal-shock stability ≥15 cycles, greatly improved resistance to structural spalling under frequent temperature cycling.
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Mullite brick with mullite as the main phase (Al₂O₃≥75%, refractoriness ≥1850℃, RUL ≥1650℃) offers high-temperature volume stability with excellent thermal-shock and creep resistance.
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 grate cooler hot end absorbs clinker drop impact and secondary-air abrasion; heavy-duty steel-fiber wear-resistant castables are widely used.
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