PC boilers expose burner zones to pulverized-coal impact and radiation; anchor design and spall resistance of linings are critical.
Problem-by-problem analysis with solutions and recommended refractories
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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LA-60 high-alumina castable uses bauxite clinker aggregate with Al₂O₃≥60% and a max service temperature of 1600℃. Its low-cement bond gives high density and good thermal-shock resistance.
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Brown corundum castable based on dense fused alumina with Al₂O₃≥85%, 1750℃ max service and CCS≥90MPa. High hardness, refractoriness and excellent slag resistance. Used in steel ladle working linings and slag lines, main iron runners, converter mouth areas and CFB boiler cyclone wear zones.
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