The choice comes down to selecting the material that works best under high-temperature, dry atmosphere conditions. Pusher furnaces operating at temperatures around 2450°F (1345°C) have much different requirements than mesh-belt furnaces operating at temperatures around 2050°F (1120°C).
As a materials innovator, Saint-Gobain has the oxide refractory package to meet your high- temperature atmosphere furnace requirements. This includes a complete line of alumina, mullite and zirconia refractory products.
Furnace refractories provide insulation, support and wear resistance. Saint-Gobain can engineer bricks, muffles, hearth plates and kiln furniture in a variety of material combinations to suit your application.
Saint-Gobain high purity Alundum® and Alfrax® alumina materials minimize or eliminate contamination and degradation that results from the reduction and re-oxidation of silica, soda and potassia found in other refractory products. These alumina mixes remain stable in the driest high-temperature furnaces due to limited amounts of impurities that won’t leave unwanted deposits and shorten the lifespan of your refractory lining.
Alundum® and Alfrax® refractory systems provide long-lasting, durable linings in high- temperature atmosphere furnaces. For smaller resistance heated furnaces, Saint-Gobain offers high purity muffles that provide a stable and wear-resistant support medium for controlled firing conditions. Alundum® and Alfrax® brick and shapes support heavy loads. Hearth plates provide creep and sag resistance including a wear-resistant push surface. Saint-Gobain offers both dense and insulating high purity alumina refractory. Alundum® A599B is considered the highest purity insulating “bubble” alumina on the market. Norfoam® A ultra-low density, ultra-high purity ceramic foam has excellent insulating and thermal shock resistant properties. Norfoam® A foam does not contain any fiber materials or organic binders and is HSE friendly in use and application. (» See Ceramic Foams)
Developed to meet the demand for improved energy efficiencies in high-temperature furnaces, kiln furniture from Saint-Gobain minimizes mass while maximizing strength, resulting in greater kiln capacity, reduced firing cycles and uniform heat distribution.
Saint-Gobain’s Mullfrax®, Mulnorite®, Alfrax® and Alundum® mixes are designed to survive aggressive cooling rates, low dew points and high temperature cycles.
Saint-Gobain engineers will help you optimize kiln furniture components for your specific application, including: