Brown Corundum Castable

Brown Corundum Castable

Material System & Positioning

Brown corundum castable uses fused brown corundum aggregate with Al₂O₃ ≥85%, bulk density 2.90 g/cm³ and service up to 1750℃. The hard, dense aggregate gives excellent wear and slag resistance. It is Henan Songrui's key grade for high-temperature, high-erosion service in ladles, hot metal ladles, troughs and converter mouths.

Key Performance

• Hard aggregate: superior wear resistance against material and metal stream erosion.
• High hot strength: low-cement bond, CCS (110℃×24h) ≥90 MPa.
• Strong slag resistance: resists slag penetration and metal attack for slag lines.
• Stable volume: PLC (1600℃×3h) ±0.3%.
• High service temperature: up to 1750℃ for long-term service above 1600℃.

Applications

• Steel & Iron: ladle working liners and slag lines, hot metal ladles, main troughs, converter mouth zones, EAF hot walls.
• Power Boilers: CFB cyclone wear zones, boiler refractory belts.
• Waste-to-energy: secondary combustion chambers, above-grate high-temperature wear zones.
• Petrochemical: FCC reactor/regenerator linings, coker furnace tube linings.

Selection Advice

Brown corundum sits between high-alumina and white corundum castables. For general hot high-erosion zones it offers the best balance; choose white corundum for chemical purity and reducing atmospheres (e.g. gasifiers); use high-alumina where temperatures are lower to cut cost.

Installation & Maintenance

Force-mix, vibrate-cast, control water strictly and heat up slowly per the dedicated curve. For ladles and hot metal ladles, proper expansion joints and heat-up schedules maximize life.

Quality Assurance

Henan Songrui New Refractory Materials Co., Ltd. (Xuanhua Town Industrial Park, Henan) is a 2024 Class A taxpayer and SRDI SME. For selection, quotation or installation guidance, contact Manager Zheng (17513376789 / 17513376789@163.com).

• Hard, dense brown corundum aggregate for heat and wear
• Low-cement bond with high hot structural strength
• Strong slag penetration and molten metal erosion resistance
• For ladle linings, slag lines and iron runners
• Stable high-temperature volume beyond ordinary high-alumina grades
• Requires force mixing, vibration and dedicated drying curve

Brown corundum castable features high hardness, refractoriness and slag resistance:

• Steel & Iron: ladle working liners and slag lines, hot metal ladles, main troughs, converter mouth areas, EAF hot walls.
• Power Boilers: CFB cyclone wear zones, boiler refractory belts.
• Waste-to-energy: secondary combustion chambers, above-grate high-temperature wear zones.
• Petrochemical: FCC reactor/regenerator linings, coker furnace tube linings.
• Advantage: service up to 1750℃, excellent slag penetration and metal-stream erosion resistance.