Patent US2340008A successfully refreshed from Google Patents.
US3634112A
Expired / Lapsed
US
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Aluminum polyoxychloride bonded castable refractory
Assignee: Basic Ceramics Inc
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Filing: 1968-04-09
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Granted: 1972-01-11
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Expires: 1988-04-09
Abstract
Abstract A refractory ceramic composition suitable for use as a castable refractory consisting essentially of a slurry of ceramic particles admixed with an aluminum polyoxychloride bonding agent. The bonding agent is the reaction product of aluminum polyoxychloride and a curing agent which is capable of supplying alkalinizing ions to the aluminum polyoxychloride. Such composition may be cast into a mold and permitted to harden in the mold. The casting is subsequently removed from the mold.
Inventors
- 👤 Paul J Yavorsky
- 👤 Louis S Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:19
CPC Classifications
C; C04; C04B; C04B33/00; C04B33/02; C04B33/13; C04B33/1315
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
37 words
The ceramic composition of claim 1 in which said bonding agent includes approximately 0.5 to about 1.5 percent by weight curing agent, the curing agent having a particle size between about 10 microns and about 150 microns.
Claim 2
Dependent Claim
13 words
The composition of claim 2 in which said curing agent is magnesium oxide.
Claim 3
Dependent Claim
21 words
The refractory composition of claim 2 in which said ceramic aggregate is of the class consisting of alumina, mullite and zirconia.
Claim 4
Dependent Claim
40 words
The ceramic composition of claim 1 in which said aluminum polyoxychloride is the reaction product of aluminum hydrate and an acidic solution selected from the group consisting of aluminum chloride and hydrochloride acid, the aluminum polyoxychloride containing excess aluminum hydrate.
Claim 5
Independent Claim
100 words
The method of making a ceramic article including the steps of admixing a ceramic aggregate material with at least about 0.5 weight percent inorganic curing agent based on the weight of the aggregate material; adding to said mixture to form a slurry about 10 percent to about 30 percent by weight, based on the weight of the mixture, of an aluminum polyoxychloride solution, said curing agent being capable of supplying alkalinizing ions to the solution to gel the same; casting the resulting slurry into a mold; allowing the same to harden in such mold and subsequently removing the casting therefrom.
Claim 6
Dependent Claim
38 words
The method of claim 6 in which said aluminum polyoxychloride solution comprises aluminum polyoxychloride and water in the ratio of about 60 to about 80 weight percent aluminum polyoxychloride to about 40 to about 20 weight percent water.
Claim 7
Dependent Claim
25 words
The method of claim 6 in which said curing agent is magnesium oxide, said aggregate being of the class consisting of alumina, mullite, and zirconia.
Claim 8
Dependent Claim
34 words
The method of claim 6 in which said curing agent is selected from the group consisting of the oxides, carbonates, hydroxides, silicates, alumino-silicates and phosphates of magnesium, calcium, barium, strontium, lanthanum, yttrium, and lithium.
Claim 9
Dependent Claim
35 words
The method of claim 9 in which the weight percent curing agent employed is between about 0.5 and about 1.5, the curing agent having a particle size between about 10 microns and about 150 microns.
Claim 10
Dependent Claim
130 words
A refractory ceramic composition in slurry form suitable for mold casting consisting essentially of a ceramic aggregate, about 0.5 to about 1.5 weight percent, based on the weight of the ceramic aggregate, of an inorganic curing agent selected from the group consisting of the oxides, carbonates, hydroxides, silicates, alumino-siliCates, and phosphates of magnesium, calcium, barium, strontium, lanthanum, yttrium, and lithium; and about 10 percent to about 30 percent by weight, based on the weight of the ceramic aggregate, of an aluminum polyoxychloride solution, said solution comprising aluminum polyoxychloride and free water in the ratio of about 60 to about 80 weight percent aluminum polyoxychloride to about 40 to about 20 weight percent water, said curing agent being capable of supplying alkalinizing ions to said aluminum polyoxychloride to gel the same.
References Cited (Backward Citations)
US2818345A
Cited
GB924510A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |