Inorganic fibrous molded refractory article, method for producing inorganic fibrous molded refractory article, and inorganic fibrous unshaped refractory composition
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-035/22
C04B-035/622
C04B-035/00
B22D-035/00
B22D-041/02
B22D-045/00
C04B-026/04
C04B-026/28
C04B-028/24
C04B-035/626
C04B-035/63
C04B-035/634
C04B-035/636
C04B-035/80
C04B-035/82
F27D-001/00
C04B-035/66
C04B-111/00
C04B-111/28
출원번호
US-0520938
(2010-12-24)
등록번호
US-9067832
(2015-06-30)
우선권정보
JP-2010-001938 (2010-01-07)
국제출원번호
PCT/JP2010/073273
(2010-12-24)
§371/§102 date
20130506
(20130506)
국제공개번호
WO2011/083696
(2011-07-14)
발명자
/ 주소
Iwata, Koji
Yonaiyama, Ken
출원인 / 주소
NICHIAS CORPORATION
대리인 / 주소
Steptoe & Johnson LLP
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
To provide a highly bio-soluble fibrous shaped refractory article which can develop desired heat resistance without containing ceramic fibers such as aluminum silicate fibers, alumina powder and silica powder and can be provided at a low production cost and a low product cost. An inorganic fibrous s
To provide a highly bio-soluble fibrous shaped refractory article which can develop desired heat resistance without containing ceramic fibers such as aluminum silicate fibers, alumina powder and silica powder and can be provided at a low production cost and a low product cost. An inorganic fibrous shaped refractory article comprising 2 to 95 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more, 2 to 95 mass % of inorganic powder having a needle-like crystal structure and 3 to 32 mass % of a binder, and in particular, it is an inorganic fibrous refractory article wherein the inorganic powder having the needle-like crystal structure has an average length of 1 to 3000 μm and an aspect ratio of 1 to 1000.
대표청구항▼
1. An inorganic fibrous shaped refractory article comprising 27 to 63 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more, the bio-soluble inorganic fibers being alkaline-earth metal silicate fibers comprising: 20 to 40 wt % of to
1. An inorganic fibrous shaped refractory article comprising 27 to 63 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more, the bio-soluble inorganic fibers being alkaline-earth metal silicate fibers comprising: 20 to 40 wt % of total of CaO and MgO, and60 to 80 wt % of SiO2;27 to 63 mass % of at least one inorganic powder having a needle-like crystal structure and selected from wollastonite powder, sepiolite powder, and attapulgite powder, and3 to 18 mass % of a binder,wherein the article comprises the bio-soluble inorganic fibers, the inorganic powder having a needle-like crystal structure and the binder in a total amount of at least 90 mass %. 2. The inorganic fibrous shaped refractory article according to claim 1, wherein the inorganic powder having a needle-like crystal structure has an average length of 1 to 3000 μm and an aspect ratio of 2 to 1000. 3. The inorganic fibrous shaped refractory article according to claim 1, wherein the inorganic powder having a needle-like crystal structure is one or more selected from sepiolite powder and attapulgite powder. 4. The inorganic fibrous shaped refractory article according to claim 1, which comprises 45 to 63 mass % of the bio-soluble inorganic fibers and 27 to 45 mass % of the needle- like crystal structure. 5. A method for producing an inorganic fibrous shaped refractory article, the method comprising subjecting a slurry to dehydration shaping; the slurry comprising 27 to 63 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more, the bio-soluble inorganic fibers being alkaline-earth metal silicate fibers comprising: 20 to 40 wt % of total of CaO and MgO, and60 to 80 wt % of SiO2;27 to 63 mass % of at least one inorganic powder having a needle-like crystal structure and selected from wollastonite powder, sepiolite powder, and attapulgite powder, and3 to 18 mass % of a binder, in terms of solid matters,wherein the slurry comprises the bio-soluble inorganic fibers, the inorganic powder having a needle-like crystal structure and the binder in a total amount of at least 90 mass % in terms of solid matters. 6. The method for producing an inorganic fibrous shaped refractory article according to claim 5, wherein the inorganic powder having needle-like crystal structure is one or more selected from sepiolite powder and attapulgite powder. 7. The method for producing an inorganic fibrous shaped refractory article according to claim 5, wherein the slurry comprises 45 to 63 mass % of the bio-soluble inorganic fibers and 27 to 45 mass % of the needle-like crystal structure. 8. An inorganic fibrous unshaped refractory composition comprising: 27 to 63 mass % of bio-soluble inorganic fibers having a dissolution ratio in a physiological saline at 40° C. of 1 mass % or more, the bio-soluble inorganic fibers being alkaline-earth metal silicate fibers comprising: 20 to 40 wt % of total of CaO and MgO and60 to 80 wt % of SiO2;27 to 63 mass % of at least one inorganic powder having a needle-like crystal structure and selected from wollastonite powder, sepiolite powder, and attapulgite powder, and3 to 18 mass % of a binder, in terms of solid matters,wherein the composition comprises the bio-soluble inorganic fibers, the inorganic powder having a needle-like crystal structure and the binder in a total amount of at least 90 mass % in terms of solid matters. 9. The inorganic fibrous unshaped refractory composition according to claim 8, wherein the inorganic powder having a needle-like crystal structure is one or more selected from sepiolite powder and attapulgite powder. 10. The inorganic fibrous unshaped refractory composition according to claim 8, which comprises 45 to 63 mass % of the bio-soluble inorganic fibers and 27 to 45 mass % of the needle-like crystal structure.
Delvaux Pierre (Bromptonville CAX) Lesmerises Normand (Rock Forest CAX) Poisson Daniel (Sherbrooke CAX) Gouin Marcel (Deauville CAX), Refractory castable composition and process for its manufacture.
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