US4104075A
Expired / Lapsed
US
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Refractories, batch for making the same and method for making the same
Assignee: Shinagawa Refractories Co Ltd
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Filing: 1977-01-13
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Granted: 1978-08-01
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Expires: 1997-01-13
Abstract
Abstract A refractory comprising 30 to 70% by weight of coarse refractory grain, and as an indispensable ingredient, of bonded structure for the coarse refractory grain titanium nitride, silicon carbide and alumina which are formed therein.
Inventors
- 👤 Takeshi Hayashi
- 👤 Masao Shibuno
- 👤 Chokei Sawaki
- 👤 Susumu Okazaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:59
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/515; C04B35/56; C04B35/565; C04B35/01; C04B35/10; C04B35/101; C04B35/622; C04B35/626; C04B35/63; C04B35/6303; C04B35/64
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
61 words
A refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride, about 0.5 to 30% by weight silicon carbide, and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory.
Claim 2
Dependent Claim
61 words
A refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride, about 0.5 to 30% by weight silicon carbide, and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory.
Claim 3
Dependent Claim
32 words
The refractory of claim 1, wherein the coarse refractory grain is a member selected from the group consisting of silicon carbide, high alumina, mullite, fire clay, silica ore, magnesia, magnesia-dolomite, and zircon.
Claim 4
Dependent Claim
78 words
A batch for making the refractory of claim 1, which comprises about 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder and about 5 to 20% by weight of silicon dioxide containing refractory metal powder.
Claim 5
Dependent Claim
32 words
The batch of claim 3, wherein the coarse refractory grain is a member selected from the group consisting of silicon carbide, high alumina, mullite, fire clay, silica ore, magnesia, magnesia-dolomote and zircon.
Claim 6
Dependent Claim
21 words
The batch of claim 3, wherein the titanium containing refractory metal is selected from the group consisting of rutile and ilumenite.
Claim 7
Dependent Claim
23 words
The batch of claim 3, wherein the carbonaceous substance is selected from the group consisting of graphite, electrode scrap, carbon black and coke.
Claim 8
Dependent Claim
26 words
The batch of claim 3, wherein the silicon dioxide containing refractory material is selected from the group consisting of pyrophyllite, fire clay, mullite and silica ore.
Claim 9
Independent Claim
154 words
A method for the manufacture of a refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride, about 0.5 to 30% by weight silicon carbide and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, and about 5 to 20% by weight of silicon dioxide containing refractory metal powder, and heating the batch at a temperature of about 1,300° to 1,600° C.
Claim 10
Independent Claim
154 words
A method for the manufacture of a refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride, about 0.5 to 30% by weight silicon carbide and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, and about 5 to 20% by weight of silicon dioxide containing refractory metal powder, and heating the batch at a temperature of about 1,300° to 1,600° C.
Claim 11
Dependent Claim
88 words
A batch for making the refractory of claim 1, which comprises about 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight of titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, about 5 to 20% by weight of silicon dioxide containing refractory material powder, and about 1 to 25% by weight of silicon carbide.
Claim 12
Dependent Claim
31 words
The batch of claim 9, wherein the coarse refractory grain is a member selected from the group consisting of silicon carbide, high alumina, mullite, fire clay, silica ore, magnesia-dolomite, and zircon.
Claim 13
Dependent Claim
23 words
The batch of claim 9, wherein the titanium containing refractory material is a member selected from the group consisting of rutile and ilumenite.
Claim 14
Dependent Claim
25 words
The batch of claim 9, wherein the carbonaceous substance is a member selected from the group consisting of graphite, electrode scrap, carbon black, and coke.
Claim 15
Dependent Claim
28 words
The batch of claim 9, wherein the silicon dioxide containing refractory material is a member selected from the group consisting of pyrophyllite, fire clay, mullite and silica ore.
Claim 16
Independent Claim
160 words
A method for manufacturing a refractory comprising about 30 to 70% by weight of coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride, about 0.5 to 30% by weight silicon carbide, and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising about 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight of titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of carbonaceous powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, about 5 to 20% by weight of silicon dioxide containing refractory material powder and about 1 to 25% by weight of silicon carbide, and heating the batch at a temperature of about 1,300° to 1,600° C.
Claim 17
Independent Claim
160 words
A method for manufacturing a refractory comprising about 30 to 70% by weight of coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride, about 0.5 to 30% by weight silicon carbide, and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising about 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight of titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of carbonaceous powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, about 5 to 20% by weight of silicon dioxide containing refractory material powder and about 1 to 25% by weight of silicon carbide, and heating the batch at a temperature of about 1,300° to 1,600° C.
Claim 18
Dependent Claim
64 words
A refractory comprising about 30 to 70% by weight of coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride plus titanium carbide, about 0.5 to 30% by weight of silicon carbide, and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory.
Claim 19
Dependent Claim
64 words
A refractory comprising about 30 to 70% by weight of coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride plus titanium carbide, about 0.5 to 30% by weight of silicon carbide, and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory.
Claim 20
Dependent Claim
32 words
The refractory of claim 15, wherein the coarse refractory grain is a member selected from the group consisting of silicon carbide, high alumina, mullite, fire clay, silica ore, magnesia, magnesia-dolomite, and zircon.
Claim 21
Dependent Claim
77 words
A batch for making the refractory of claim 15, which comprises about 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder and about 5 to 20% by weight of silicon dioxide containing refractory powder.
Claim 22
Dependent Claim
31 words
The batch of claim 17, wherein the coarse refractory grain is a member selected from the group consisting of silicon carbide, high alumina, mullite, fire clay, silica ore, magnesia-dolomite, and zircon.
Claim 23
Dependent Claim
23 words
The batch of claim 17, wherein the titanium containing refractory material is a member selected from the group consisting of rutile and ilumenite.
Claim 24
Dependent Claim
25 words
The batch of claim 17, wherein the carbonaceous substance is a member selected from the group consisting of graphite, electrode scrap, carbon black, and coke.
Claim 25
Dependent Claim
28 words
The batch of claim 17, wherein the silicon dioxide containing refractory material is a member selected from the group consisting of pyrophyllite, fire clay, mullite and silica ore.
Claim 26
Independent Claim
157 words
A method for the manufacture of a refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride plus titanium carbide, about 0.5 to 30% by weight silicon carbide and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, and about 5 to 20% by weight of silicon dioxide containing refractory metal powder, and heating the batch at a temperature of about 1,300° to 1,600° C.
Claim 27
Independent Claim
157 words
A method for the manufacture of a refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride plus titanium carbide, about 0.5 to 30% by weight silicon carbide and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, and about 5 to 20% by weight of silicon dioxide containing refractory metal powder, and heating the batch at a temperature of about 1,300° to 1,600° C.
Claim 28
Dependent Claim
89 words
A batch for making the refractory of claim 15, which comprises about 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, and about 1 to 30% by weight of aluminum metal powder, and about 5 to 20% by weight of silicon dioxide containing refractory powder, and about 1 to 25% by weight of silicon carbide powder.
Claim 29
Dependent Claim
31 words
The batch of claim 23, wherein the coarse refractory grain is a member selected from the group consisting of silicon carbide, high alumina, mullite, fire clay, silica ore, magnesia-dolomite, and zircon.
Claim 30
Dependent Claim
23 words
The batch of claim 23, wherein the titanium containing refractory material is a member selected from the group consisting of rutile and ilumenite.
Claim 31
Dependent Claim
25 words
The batch of claim 23, wherein the carbonaceous substance is a member selected from the group consisting of graphite, electrode scrap, carbon black, and coke.
Claim 32
Dependent Claim
28 words
The batch of claim 23, wherein the silicon dioxide containing refractory material is a member selected from the group consisting of pyrophyllite, fire clay, mullite and silica ore.
Claim 33
Independent Claim
168 words
A method for the manufacture of a refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride plus titanium carbide, about 0.5 to 30% by weight silicon carbide and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, and about 5 to 20% by weight of silicon dioxide containing refractory metal powder, and about 1 to 25% by weight of silicon carbide powder, and heating the batch at a temperature of about 1,300° to 1,600° C.
Claim 34
Independent Claim
168 words
A method for the manufacture of a refractory comprising about 30 to 70% by weight of a coarse refractory grain and, as an indispensable ingredient for the coarse refractory grain, a bonded structure comprising about 0.1 to 8.0% by weight titanium nitride plus titanium carbide, about 0.5 to 30% by weight silicon carbide and about 1.5 to 55% by weight of alumina, said bonded structure being formed in the refractory, which comprises kneading and forming a batch comprising 30 to 70% by weight of coarse refractory grain, about 0.5 to 10% by weight titanium dioxide containing refractory material powder, about 0.5 to 15% by weight of a carbonaceous substance powder, about 0.5 to 10% by weight of silicon metal powder, about 1 to 30% by weight of aluminum metal powder, and about 5 to 20% by weight of silicon dioxide containing refractory metal powder, and about 1 to 25% by weight of silicon carbide powder, and heating the batch at a temperature of about 1,300° to 1,600° C.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-07-31 | 1982-01-30 | 1982-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-07-31 | 1986-01-30 | 1986-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-07-31 | 1990-01-30 | 1990-08-01 | $7700.00 | Window Closed / Lapsed |