Composition useful as mortar or coatings refractories
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F27D-001/16
C04B-035/66
C04B-035/101
C04B-035/63
C04B-035/626
C04B-035/80
B22C-001/18
B22C-003/00
C04B-028/06
C04B-028/34
C21B-007/04
C21C-005/44
F27D-001/00
C04B-111/00
출원번호
US-0390382
(2010-07-21)
등록번호
US-9272954
(2016-03-01)
국제출원번호
PCT/US2010/042677
(2010-07-21)
§371/§102 date
20120712
(20120712)
국제공개번호
WO2011/011470
(2011-01-27)
발명자
/ 주소
Schofalvi, Karl-Heinz
DeLiso, Evelyn McGee
출원인 / 주소
Capacity Holdings LLC
대리인 / 주소
McDonald Hopkins LLC
인용정보
피인용 횟수 :
0인용 특허 :
23
초록▼
This invention relates to a composition comprising: ceramic refractory particulates made from alumina, one or more rare earth oxides, one or more oxides of a transition metal, the transition metal being Sc, Zn, Ga, Y, Cd, In, Sn, Tl, or a mixture of two or more thereof; an alumina and phosphate cont
This invention relates to a composition comprising: ceramic refractory particulates made from alumina, one or more rare earth oxides, one or more oxides of a transition metal, the transition metal being Sc, Zn, Ga, Y, Cd, In, Sn, Tl, or a mixture of two or more thereof; an alumina and phosphate containing composition; and water. The composition is free of SiO2 or substantially free of SiO2, and is useful as a mortar or coating for molten aluminum or steel contact refractories.
대표청구항▼
1. A composition, comprising: an aggregate for addition to mortar made from an as-batched refractory composition which comprises alumina particulates, one or more rare earth oxides, and one or more oxides of a transition metal, the transition metal being Sc, Zn, Ga, Y, Cd, In, Sn, Tl, or the oxide o
1. A composition, comprising: an aggregate for addition to mortar made from an as-batched refractory composition which comprises alumina particulates, one or more rare earth oxides, and one or more oxides of a transition metal, the transition metal being Sc, Zn, Ga, Y, Cd, In, Sn, Tl, or the oxide of a transition metal being a mixture of two or more transition metal oxides, the as-batched refractory composition being fired to form a ceramic refractory;wherein the as-batched refractory composition for making the aggregate for addition to mortar further comprises chopped ceramic fibers containing nanofibrils, alumina fibers, or a mixture thereof;wherein the nanofibrils extend the surface area of the chopped ceramic fibers by at least about 100 times the surface area of the chopped ceramic fiber without the nanofibrils;a phosphate and alumina containing composition; andwater;the composition being free of SiO2 or substantially free of SiO2. 2. The composition of claim 1 wherein the ceramic refractory is in the form of a solid structure which is ground to form the aggregate for addition to mortar. 3. The composition of claim 1 wherein the ceramic refractory is in the form of pellets or briquettes which are reduced in size to form the aggregate for addition to mortar. 4. The composition of claim 1 wherein the chopped ceramic fibers comprise strands of ceramic fiber chopped to a median length in the range from about 0.1 to about 5 cm, and having a median diameter in the range from about 1 to about 50 microns. 5. The composition of claim 1 wherein the alumina fibers have a surface area in the range from about 50 to about 500 square meters per gram. 6. The composition of claim 1 wherein the alumina fibers have a median diameter in the range from about 1 to about 5 microns. 7. The composition of claim 1 wherein the alumina fibers comprise amorphous alumina and crystalline alumina. 8. The composition of claim 1 wherein the alumina particulates in the as-batched refractory composition comprise dehydrated boehmite, calcined boehmite, or a mixture thereof. 9. The composition of claim 1 wherein the as-batched refractory composition further comprises alumina aggregate. 10. The composition of claim 1 wherein the rare earth oxide in the as-batched refractory composition comprises an oxide of Pr, La, Ce, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, or a mixture of two or more thereof. 11. The composition of claim 1 wherein the rare earth oxide in the as-batched refractory composition comprises Pr6O11, and the transition metal oxide in the as-batched refractory composition comprises Y2O3. 12. The composition of claim 1 wherein the aggregate for addition to mortar has an average particulate size in the range up to about 150 microns. 13. The composition of claim 1 wherein the phosphate and alumina containing composition comprises an alumina adhesive. 14. The composition of claim 1 wherein the phosphate and alumina containing composition comprises a phosphate-bonded alumina coating system. 15. The composition of claim 1 wherein the phosphate and alumina containing composition comprises an aluminum phosphate. 16. The composition of claim 1 wherein the phosphate and alumina containing composition comprises monoaluminum phosphate. 17. The composition of claim 1 wherein the phosphate and alumina containing composition comprises alumina particulates and monoaluminum phosphate. 18. The composition of claim 1 wherein the water comprises distilled water. 19. The composition of claim 1 wherein the composition comprises from about 10 to about 35% by weight aggregate for addition to mortar; from about 50 to about 85% by weight of the alumina and phosphate containing composition; and from about 5 to about 15% by weight water. 20. The composition of claim 1 wherein the composition is in the form of a coating composition. 21. The composition of claim 1 wherein the composition is in the form of a mortar composition. 22. A process for treating a refractory comprising applying the composition of claim 1 to a refractory, curing the composition, and firing the cured composition. 23. The process of claim 22 wherein the refractory is used for contacting molten aluminum and the cured composition is fired at a temperature up to about 815° C. 24. The process of claim 22 wherein the refractory is used for contacting molten steel and the cured composition is fired at a temperature up to about 1700° C.
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이 특허에 인용된 특허 (23)
Mansmann Manfred (Krefeld DT) Schmidt Ludwig (Krefeld DT), Aluminum oxide fibers and their production.
Addiego William P. (Big Flats NY) Lachman Irwin M. (Corning NY) Patil Mallanagouda D. (Corning NY) Williams Jimmie L. (Painted Post NY), Controlled pore size phosphate-alumina material and method for producing same.
Stevens Ward C. (New Fairfield CT), Metal coated fibers containing a sol gel formed porous polysilicate, titania or alumina interlayer and composite materia.
Creber David K. (Kingston DE CAX) Johnson William B. (Newark DE) Newkirk Marc S. (Newark DE), Method of making shaped ceramic composites with the use of a barrier and articles produced thereby.
Edwin G. Butler GB; Anthony G. Razzell GB; John Dominy GB; Paul A. Doleman GB; Ihsan AI-I Al-Dawery GB, Method of manufacturing a ceramic matrix composite.
Illston Trevor J. (Derby GB2) Doleman Paul A. (Derby GB2) Butler Edwin G. (Warwick GB2) Marquis Peter M. (Solihull GB2) Ponton Clive B. (Birmingham GB2) Piramoon Reza (Coventry GB2) Gilbert Mark J. (, Method of manufacturing a composite material.
Lespade Pierre (Merignac FRX) Guette Alain (Bouscat FRX) Menessier Erik (Talence FRX) Naslain Roger (Pessac FRX) Paillier Ren (Cestas FRX), Method of manufacturing a composite material with vitroceramic or ceramic matrix using a sol-gel process.
Wan Chung-Zong (Somerset NJ) Tauster Samuel J. (Englishtown NJ) Rabinowitz Harold N. (Upper Montclair NJ), Removal of CO, hydrocarbons and NOx with catalyst containing platinum rhodium.
Stevens Ward C. (New Fairfield CT), Sol gel formation of polysilicate, titania, and alumina interlayers for enhanced adhesion of metal films on substrates.
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