We are the world’s leading producer of calcined products for the refractory industry and our iconic brand, MULCOA, is recognized as the global benchmark in this field. It has been produced for over 50 years using a unique process that ensures homogeneous mixing and consistent mineralogy, providing the quality you can depend on from our facility in Andersonville, Georgia, USA.

MULCOA’s high mullite content and product uniformity create the best refractory aggregate to meet the exacting quality demands of the modern refractory industry. Our MULCOA refractory calcines are made from the highest purity ore deposits mined from the South Georgia kaolin belt in the USA, and blended to obtain chemistries between 45 and 70% alumina. This transformation of clay into mullite generates a structure that gives the product the required characteristics for refractory applications.

Key benefits:

- Good creep resistance

- Low thermal conductivity

- Excellent thermal stability

- Good thermal shock resistance

- Resistance to most chemical attacks

- Oxidation resistance

- Abrasion resistance