US4147539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of cupola flux
Assignee: ChampionX LLC
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Filing: 1978-01-12
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Granted: 1979-04-03
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Expires: 1998-01-12
Abstract
Abstract A flux for fluidizing slag in a cupola comprising a briquette which is composed of a major portion of alumina and an alkali metal base in an amount to provide an Al 2 O 3 :Na 2 O ratio ranging from 1:0.4 to 1:0.8 and from 5 up to 50% by weight of a binder from the group consisting of a montmorillonite clay, alumino silicate zeolites, sodium aluminate and aluminum phosphate. The briquette is characterized as being able to substantially maintain its physical integrity at about 1000° C. for about 1 hour.
Inventors
- 👤 George T. Kekish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:57
CPC Classifications
C; C21; C21B; C21B5/00; C21B5/04
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
92 words
A flux for fluidizing slag in a cupola comprising a briquette which is composed of a major portion of alumina and an alkali metal base in an amount to provide an Al 2 O 3 :Na 2 O ratio ranging from 1:0.4 to 1:0.8 and from 5 up to 50% by weight of a binder from the group consisting of a montmorillonite clay, alumino silicate zeolites, sodium aluminate and aluminum phosphate, said briquette being characterized as being able to substantially maintain its physical integrity at about 1000° C. for about 1 hour.
Claim 2
Dependent Claim
92 words
A flux for fluidizing slag in a cupola comprising a briquette which is composed of a major portion of alumina and an alkali metal base in an amount to provide an Al 2 O 3 :Na 2 O ratio ranging from 1:0.4 to 1:0.8 and from 5 up to 50% by weight of a binder from the group consisting of a montmorillonite clay, alumino silicate zeolites, sodium aluminate and aluminum phosphate, said briquette being characterized as being able to substantially maintain its physical integrity at about 1000° C. for about 1 hour.
Claim 3
Dependent Claim
23 words
The flux of claim 1 where the binder is bentonite clay and it is present in an amount ranging from 10-50% by weight.
Claim 4
Dependent Claim
19 words
The flux of claim 2 where the bentonite clay is present in an amount ranging from 10-30% by weight.
Claim 5
Dependent Claim
19 words
The flux of claim 2 where from 10-30% of the bentonite is replaced with either waterglass or silica flour.
References Cited (Backward Citations)
US3309196A
Cited
US3721547A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-04-02 | 1982-10-02 | 1983-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-04-02 | 1986-10-02 | 1987-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-04-02 | 1990-10-02 | 1991-04-03 | $7700.00 | Window Closed / Lapsed |