Composition and process for making an insulating refractory mate

Details Composition and process for making an insulating refractory mate Composition and process for making an insulating refractory mate

1996-05-13

1998-04-28

Group, Karl

Compositions: ceramic

Ceramic compositions

Refractory

C04B 35101

Patent

active

057444129

ABSTRACT:
A composition and process for making an insulating refractory material. The composition includes calcined alumina powder, flash activated alumina powder, an organic polymeric binder and a liquid vehicle which is preferably water. Starch or modified starch may also be added. A preferred insulating refractory material made with the composition has a density of about 2.4-2.6 g/cm.sup.3 with reduced thermal conductivity, compared with tabular alumina. Of importance, the formulation has good abrasion resistance and crush strength during intermediate processing (commercial sintering) to attain full strength and refractoriness, good abrasion resistance and crush strength.

REFERENCES:
patent: 4579839 (1986-04-01), Pearson
patent: 4900698 (1990-02-01), Lundsager
patent: 4970181 (1990-11-01), Pearson
patent: 5252526 (1993-10-01), Whittemore
patent: 5279779 (1994-01-01), Fitch
patent: 5362692 (1994-11-01), Bugajski et al.

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