Refractory composition and process for the repair of a hot refractory wall
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C04B-035/14
C04B-012/02
C04B-012/00
출원번호
US-0549993
(2004-03-29)
등록번호
US-7309674
(2007-12-18)
우선권정보
EP-03447065(2003-03-27)
국제출원번호
PCT/BE04/000045
(2004-03-29)
§371/§102 date
20050926
(20050926)
국제공개번호
WO04/085341
(2004-10-07)
발명자
/ 주소
Sabre,Serge
Jonas,Christophe
출원인 / 주소
Vesuvius Crucible Company
인용정보
피인용 횟수 :
0인용 특허 :
6
초록▼
The present invention relates to refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina based compounds 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2 to 8% of water. These c
The present invention relates to refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina based compounds 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2 to 8% of water. These compositions are particularly useful for the repair of coke oven damaged wall in a gunning process.
대표청구항▼
What is claimed is: 1. A gunning refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina-based compounds, 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2-8% of water. 2. A g
What is claimed is: 1. A gunning refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina-based compounds, 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2-8% of water. 2. A gunning refractory composition according to claim 1, wherein the amorphous silica aggregates comprise vitreous silica. 3. A gunning refractory composition according to claim 1, wherein the alumina based compounds comprise materials selected from the group consisting of kyanite, andalusite, chamote, mullite and mixtures thereof. 4. A gunning refractory composition according to claim 1, wherein the alumina-based compounds content is between 20-40 dry weight %. 5. A gunning refractory composition according to claim 1, wherein the chemical binder is a mineral chemical selected from the group consisting of phosphoric acid, acid alumina phosphate, alumina sulphate and sodium silicate. 6. A gunning refractory composition according to claim 1, wherein the refractory components have 95 wt. % of grain size lower than 4 mm. 7. A gunning refractory composition according to claim 6, wherein the refractory components have 100 wt. % of grain size lower than 5.6 mm. 8. A process for the repair of a hot silica refractory wall comprising the steps of a) conveying a refractory composition consisting essentially of 40-90 dry weight % of amorphous silica aggregates, up to 40 dry weight % of alumina based compounds, 10-15 dry weight % of clay, 0.2-2.0 dry weight % of a chemical binder and further containing 2-8of water to a gunning nozzle; b) mixing the refractory composition with water in the gunning nozzle; and c) gunning the obtained mixture against the hot refractory wall. 9. A process according to claim 8, wherein the amorphous silica aggregates comprise vitreous silica. 10. A process according to claim 8, wherein the alumina based compounds comprise materials selected from the group consisting of kyanite, andalusite, chamote, mullite, and mixtures thereof. 11. A process according to claim 8, wherein the alumina based compounds content is between 20-40 dry weight %. 12. A process according to claim 8, wherein the chemical binder is a mineral selected from the group consisting of phosphoric acid, acid alumina phosphate, alumina sulphate and sodium silicate. 13. A process according to claim 8, wherein the refractory components have 95 wt. % of grain size lower than 4 mm. 14. A process according to claim 13, wherein the refractory components have 100 wt. % of grain size lower than 5.6 mm. 15. A process according to claim 8, wherein the refractory wall is a coke oven wall.
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이 특허에 인용된 특허 (6)
Rechter Harold L. (Country Club Hills IL), Hard setting refractory composition.
Hughes ; Jr. Gustav O. (7932 Westmoreland Ave. Pittsburgh PA 15218), Low thermal conductivity, high strength refractory castable composition with high abrasion resistance.
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