Linings for Firing to 3000°F

ALTRA® fiber modules are designed for application temperatures up to 3000°F. ALTRA® polycrystalline fibers offer significantly reduced thermal shrinkage compared to refractory ceramic fibers. The reduced shrinkage makes it possible to use ALTRA® modules at much higher temperatures than ceramic fiber modules. The polycrystalline structure of the ALTRA® fibers also prevents the generation of cristobalite, a serious health concern with refractory ceramic fibers.

ALTRA® modules are available in various grades appropriate for oxidizing or reducing atmospheres. They are suitable for lining kilns and furnaces for sintering or firing technical ceramics, electronic ceramics, ferrites, powder metal parts, carbon fibers and other products requiring firing temperatures > 1300°C. Traditionally insulating brick linings are used in these types of kilns and furnaces. ALTRA® modules allow more rapid heating and cooling than brick linings, thus reducing cycle time and increasing kiln through-put. ALTRA® modules are not damaged by thermal shock and so can offer longer life and reduced maintenance versus brick linings in applications with rapid thermal cycling conditions.

 

Grades   ALTRA® 72 Suitable for application temperatures up to 3000°F in oxidizing and neutral atmospheres   ALTRA® 97 Suitable for reducing atmosphere applications, such as dry hydrogen and vacuum, to 2750°F

Densities   6 to 10 lbs/ft³   Dependent on temperature, atmosphere and firing conditions   Anchors   Grades: 304SS, 310SS, 316SS, Inconel   Types : RA-25, Rath Incorporated designed SKA50 comb anchors

 

Options   Available mounted on steel panels or expanded metal   Hardboard or galvanized steel compression plates   Giant Modules   Engineering Services   Heat Flow Analysis   Layout design for new and retrofit kilns   Turn key installation and supervision

ALTRA® Modules Installation SKA50 anchors and  steel compression plates

 

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