US4489022A
Expired / Lapsed
US
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Forming coherent refractory masses
Assignee: AGC Glass Europe SA
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Filing: 1982-09-17
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Granted: 1984-12-18
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Expires: 2002-09-17
Abstract
Abstract In a process of forming a refractory mass in which having an average grain size of less than 50 mu m are burned while mixed with solid particles of at least one incombustible refractory material during projection of the mixture against a surface to form a coherent mass on said surface, the oxidizable material comprises silicon and aluminium, the aluminium being present in an amount not exceeding 12% by weight of the total mixture.
Inventors
- 👤 Pierre Robyn
- 👤 Pierre Deschepper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:41
CPC Classifications
F; F27; F27D; F27D1/00; F27D1/16; F27D1/1636; F27D1/1642; F27D1/1647; F27D1/1652; C; C04; C04B; C04B35/00; C04B35/622; C04B35/64; C04B35/65; C04B35/651; C04B35/66; C10; C10B; C10B29/00; C10B29/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
92 words
A process of forming a refractory mass comprising burning particles of exothermically oxidisable material having an average grain size less than 50 μm while mixed with particles of incombustible refractory material during projection of the mixture against a surface to form a coherent refractory mass on said surface, said oxidisable material comprises silicon and aluminum, the aluminum being present in an amount not exceeding 9% by weight of the total mixture, and wherein the aluminum and silicon are together present in an amount not exceeding 15% by weight of the total mixture.
Claim 2
Dependent Claim
92 words
A process of forming a refractory mass comprising burning particles of exothermically oxidisable material having an average grain size less than 50 μm while mixed with particles of incombustible refractory material during projection of the mixture against a surface to form a coherent refractory mass on said surface, said oxidisable material comprises silicon and aluminum, the aluminum being present in an amount not exceeding 9% by weight of the total mixture, and wherein the aluminum and silicon are together present in an amount not exceeding 15% by weight of the total mixture.
Claim 3
Dependent Claim
24 words
A process according to claim 1, wherein the maximum grain size of said particles of silicon and aluminium is not more than 100 μm.
Claim 4
Dependent Claim
20 words
A process according to claim 1, wherein said oxidisable material has a specific surface greater than 3000 cm 2 /g.
Claim 5
Dependent Claim
23 words
A process according to claim 3, wherein said silicon particles have a specific surface in the range 3000 to 8000 cm 2 /g.
Claim 6
Dependent Claim
23 words
A process according to claim 3, wherein said aluminium particles have a specific surface in the range 3000 to 12000 cm 2 /g.
Claim 7
Dependent Claim
24 words
A process according to claim 3, wherein each such oxidisable substance has a specific surface in the range 4000 to 6000 cm 2 /g.
Claim 8
Dependent Claim
30 words
A process according to claim 1, wherein the aluminium and silicon are together present in an amount in the range 10% to 15% inclusive by weight of the total mixture.
Claim 9
Dependent Claim
23 words
A process according to claim 1, wherein the total mixture comprises by weight 9% to 15% inclusive silicon and up to 7% aluminium.
Claim 10
Dependent Claim
23 words
a process according to claim 1, wherein the total mixture comprises by weight 3% to 9% inclusive silicon and 3% to 9% aluminium.
Claim 11
Dependent Claim
34 words
A process according to claim 1, wherein said incombustible refractory material of said mixture comprises one or more of SiO 2 , ZrO 2 , Al 2 O 3 , MgO, sillimanite, mullite, zircon.
Claim 12
Dependent Claim
24 words
A process according to claim 1, wherein said incombustible refractory material of said mixture has an average grain size of less than 500 μm.
Claim 13
Dependent Claim
21 words
A process according to claim 1, wherein said incombustible refractory particles have an average grain size of less than 300 μm.
Claim 14
Dependent Claim
25 words
A process according to claim 1, wherein the maximum grain size of said particles of said silicon and aluminum is not more than 50 μm.
Claim 15
Dependent Claim
51 words
A process according to claim 1 wherein said oxidizable material consists of silicon and aluminum, the aluminum being present in an amount not exceeding 8% by weight of the total mixture, and wherein aluminum and silicon are together present in an amount not exceeding 12% by weight of the total mixture.
References Cited (Backward Citations)
GB1330894A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-12-18 | 1988-06-18 | 1988-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-18 | 1992-06-18 | 1992-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-18 | 1996-06-18 | 1996-12-18 | $7700.00 | Window Closed / Lapsed |