Chamotte & Calcined Clay

Stable, inert calcined clay minerals engineered for thermal shock resistance and refractory performance.

Processing route

Calcination at approximately 1300°C–1600°C

Thermal shock resistance, low thermal conductivity and stable ceramic behaviour.

Available grades

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NCHAMOT 42 SPL B

Inert stability and thermal shock resistance

Calcined flint clay, also known as grog or fireclay, engineered for thermal shock resistance and stable refractory performance.

NCLAY 45 SPL

Controlled chemistry and stable ceramic behaviour

Special calcined clay grade with controlled iron and titanium content for precision refractory applications.

NCLAY 45 B

Stable calcined clay with balanced chemistry

High-alumina calcined clay for refractory and ceramic formulations requiring stable density and controlled porosity.

NCLAY 52 SPL B

Higher alumina with controlled iron content

Special 50–52% alumina calcined clay grade for refractory formulations and controlled particle-size applications.

NCLAY 55 B

Dependable stability for high-temperature formulations

Calcined clay grade for demanding refractory and ceramic applications requiring dependable thermal stability.

NCLAY 60 B

58–62% alumina for higher-temperature duty

High-alumina calcined clay grade for refractory compositions that require enhanced heat resistance and stability.

Technical & commercial support

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