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July 9, 2010
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ALTRONTM alumina-bonded silicon carbide (SiC) has been developed by Blasch Precision Ceramics, Inc. The precision-cast shapes outlast nitride-bonded SiC brick and wear-resistant alloys in mining, power generation and cement processing applications.

Field trials in hydrocyclone applications in mining and cement plants have shown more than three times the life of conventional nitride-bonded SiC components. ASTM C 704 abrasion resistance testing has verified this.

The new composition creates a unique interaction between constituent materials, yielding a body with refractory-like densities that allows the shapes to be thermal-cycled repeatedly without damage due to thermal shock, but with a very closed porosity that is normally found in fully dense advanced ceramic bodies.         

The new material can be formed and processed like conventional nitride-bonded SiC, but exhibits greater abrasion resistance in line with much more expensive and difficult-to-form advanced ceramic materials.

Applications for this composition include: slurry, ore, ash, coal, coke and catalyst processing and transport in high-temperature, abrasive and corrosive environments. Typical components include pipe linings, elbows, burners, valves, cones, vortex finders, nozzles, micronizers and pump components.

For more information, call (800) 550-5768 or (518) 436-1263, ext. 21, or visit

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