CUMIFRAC (Silicon Carbide Refractories) are produced from silicon carbide, a raw material synthesized in a resistance-type electric furnace at temperature exceeding 2500°C, through the reaction of silica with carbon. They have a thermal conductivity 10 times that of fireclay refractories, good corrosion and thermal shock resistance, and can be formed into complex shapes. They can withstand attack and flame erosion. This makes CUMIFRAC unusual even among advanced refractories and has given it wide uses.


  • Extremely high thermal conductivity
  • Very high hot strength
  • High erosion and abrasion resistance
  • Thermal shock resistance
  • Chemical inertness

REFRAMAT offer a range of refractories and Prodorites Solutions from CUMI, including Cumi Hicast 70, Cumi Hicast 90, Cumicrete CA 392 S, Cumicrete CK 14, Cumicrete CA 60, Cumifrac R1, Cumifrac A24, Prodorite Solutions.

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