US4017316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireproof stamping mass for tap spouts and flues in blast furnaces
Assignee: Magnesital Feuerfest GmbH
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Filing: 1975-03-26
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Granted: 1977-04-12
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Expires: 1995-03-26
Abstract
Abstract Fireproof stamping mass containing pyrophillite, silicon carbide, plastic clay, quarzite, a carbonaceous bonding agent and water.
Inventors
- 👤 Albert Lajos Renkey
- 👤 Hans-Peter Engelhardt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 21:03
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/626; C04B35/63; C04B35/632; C04B35/634; C04B35/63496; C04B35/01; C04B35/16; C04B35/18; C04B35/66; C21; C21B; C21B7/00; C21B7/14; C04B2111/00; C04B2111/00474; C04B2111/0087; C04B2111/00887; C04B2235/00; C04B2235/02; C04B2235/30; C04B2235/34; C04B2235/3418; C04B2235/3427; C04B2235/3463; C04B2235/38; C04B2235/3817; C04B2235/3826; C04B2235/70; C04B2235/96; C04B2235/9669; C04B2235/9676; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
100 words
An aqueous stamping mass for tap spouts and flues in blast furnaces consisting essentially of 1. 20-60% by weight pyrophyllite (Al 2 O 3 .4 SiO 2 .H 2 O) having a particle size of up to 8 mm, 2. 5-30% by weight silicon carbide, 3. 5-20% by weight plastic clay (Al 2 O 3 .SiO 2 . × H 2 O), 4. 5-25% by weight quartzite, 5. 5-15% by weight carbonaceous bonding agent having a fusion point of 110°-200° C (without the components becoming gaseous at operating temperature), and 6. a suitable quantity of water for attaining optimal thickness.
Claim 2
Dependent Claim
100 words
An aqueous stamping mass for tap spouts and flues in blast furnaces consisting essentially of 1. 20-60% by weight pyrophyllite (Al 2 O 3 .4 SiO 2 .H 2 O) having a particle size of up to 8 mm, 2. 5-30% by weight silicon carbide, 3. 5-20% by weight plastic clay (Al 2 O 3 .SiO 2 . × H 2 O), 4. 5-25% by weight quartzite, 5. 5-15% by weight carbonaceous bonding agent having a fusion point of 110°-200° C (without the components becoming gaseous at operating temperature), and 6. a suitable quantity of water for attaining optimal thickness.
Claim 3
Dependent Claim
18 words
An aqueous stamping mass according to claim 1, characterised in that the carbonaceous bonding agent is a tar.
Claim 4
Dependent Claim
18 words
An aqueous stamping mass according to claim 1, characterised in that the carbonaceous bonding agent is a pitch.
Claim 5
Dependent Claim
59 words
An aqueous fireproofing stamping mass according to claim 1 wherein said silicon carbide has a particle size of up to 1 mm., said plastic clay has a maximum particle size of 0.5 mm., said quartzite is in the form of a coarse grain structure and said carbonaceous bonding agent is present in a maximum particle size of 0.5 mm.
Claim 6
Dependent Claim
39 words
A stamping mass according to claim 1 wherein said pyrophyllite has a particle size up to 6 mm, said plastic clay has a particle size of approximately 0.1 mm. and said quartzite has a particle size of 3-8 mm.
Claim 7
Dependent Claim
17 words
An aqueous fireproofing stamping mass according to claim 1 wherein said plastic clay is a ball clay.
Claim 8
Dependent Claim
20 words
An aqueous stamping mass according to claim 1 wherein said water is present in an amount of 6-9% by weight.
Claim 9
Dependent Claim
19 words
A stamping mass according to claim 7 wherein said water is present in an amount of 7-8.5% by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |