Composition and process for making an insulating refractory material

Patent · Tue Apr 28 00:00:00 EDT 1998

OSTI ID:871504

Pearson, Alan ^[1]; Swansiger, Thomas G ^[2]

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1. Murrysville, PA
2. Apollo, PA

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.

• Research Organization: Aluminum Co. of America, Alcoa Center, PA (USA)
• DOE Contract Number: FC07-89ID12903
• Assignee: Aluminum Company of America (Pitsburgh, PA)
• Patent Number(s): US 5744412
• Application Number: 08/644440
• OSTI ID: 871504
• Country of Publication: United States
• Language: English

Related Subjects

composition
process
insulating
refractory
material
calcined
alumina
powder
flash
activated
organic
polymeric
binder
liquid
vehicle
preferably
water
starch
modified
added
preferred
density
4-2
cm
reduced
thermal
conductivity
compared
tabular
importance
formulation
abrasion
resistance
crush
strength
intermediate
processing
commercial
sintering
attain
refractoriness
insulating refractory
organic polymeric
polymeric binder
reduced thermal
refractory material
thermal conductivity
organic polymer
abrasion resistance
preferably water
liquid vehicle
alumina powder
/501/