Composition and process for making an insulating refractory material

Patent · Tue Apr 28 00:00:00 EDT 1998

OSTI ID:644428

Pearson, A; Swansiger, T G

A composition and process are disclosed 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.

• Research Organization: Aluminum Company of America
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: FC07-89ID12903
• Assignee: Aluminum Co. of America, Pittsburgh, PA (United States)
• Patent Number(s): US 5,744,412/A/
• Application Number: PAN: 8-644,440
• OSTI ID: 644428
• Resource Relation: Other Information: PBD: 28 Apr 1998
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
REFRACTORIES
CHEMICAL COMPOSITION
SYNTHESIS
THERMAL CONDUCTIVITY
WEAR RESISTANCE