Imerys Refractory Minerals is the world’s leading producer of calcined products for the refractory industry.
Our brand portfolio is comprised of the world-famous Mulcoa® line and the South African products Chamco and Super Chamottes.
Our Mulcoa® range of materials is recognized as the global benchmark. Extracted from the South Georgia kaolin belt in the US, clays are blended to give chemistries between 45 and 70% Alumina.
Chamco range is our low alumina chamotte (over 37% Al2O3) and Super Ecca Chamotte is our range of high alumina chamottes (over 43% Al2O3). These products are available run of kiln or sized into various PSD.
The transformation of clay into mullite generates a structure that gives the product the required characteristics for refractory applications :
Good creep resistance
Low thermal conductivity
Excellent thermal stability
Good thermal shock resistance
Resistance to most chemical attacks
Chamco and Super Ecca Chamotte form our range of high-duty and super-duty chamotte materials for general purpose refractory applications. These products are available as sized or run of kiln.
Technical datasheets are available upon request.
Mulcoa® is a mainstay of refractory production, wherever volume stability, resistance to carbon monoxide attack and all-round performance are required.
Alumino-silicate is particularly indicated for moulds requiring high refractoriness and creep resistance, as in the casting of large steel or titanium alloys.
Super Ecca Chamotte and Mulgrain® our chamottes lines are specially designed for the production of ceramic moulds for investment casting, where they can be used as stucco or flour in both alcohol and water-based processes.
Individual technical datasheets are available on demand.