The incinerator furnace faces hot flue gas and alkaline fly ash; SiC bricks and alkali-resistant castables are combined.
Problem-by-problem analysis with solutions and recommended refractories
Silicon carbide brick (SiC≥85%, refractoriness ≥1900℃, CCS≥120MPa) offers high thermal conductivity, extreme wear resistance, thermal-shock resistance and molten-salt resistance—preferred for waste incineration and hot abrasion duties.
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High-alumina brick LZ-65 (Al₂O₃≥65%, refractoriness ≥1790℃) has a higher corundum/mullite phase ratio for stronger slag resistance, higher temperature rating and better hot load-bearing capacity.
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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.
Learn More →The secondary combustion chamber sees 1100°C flue gas and alkali/chlorine attack; linings need alkali resistance and spall resistance.
View Problems & Solutions →Waste heat boiler inlet ducts suffer dust-laden gas erosion; wear linings combined with abrasion shields are used.
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