KR970015532A - Magnesia with Excellent Hot-Strength-Chromicil Fire Resistant Brick - Google Patents
Magnesia with Excellent Hot-Strength-Chromicil Fire Resistant Brick Download PDFInfo
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- KR970015532A KR970015532A KR1019950028917A KR19950028917A KR970015532A KR 970015532 A KR970015532 A KR 970015532A KR 1019950028917 A KR1019950028917 A KR 1019950028917A KR 19950028917 A KR19950028917 A KR 19950028917A KR 970015532 A KR970015532 A KR 970015532A
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Abstract
본 발명은 용강의 탈 가스 처리를 행하는 정련용기인 진공탈가스 설비등에 내장된 내화물인 마그네시아-크로미아질 내화벽돌에 관한 것으로, 마그네시아와 크로미아질로 이루어진 내화재료에 메타카올린과 금속알루미늄 분말로 이루어진 혼합분말을 첨가하여 소성시에 금속알루미늄 분말의 산화-팽창에 의한 치밀화 및 메타카올린으로부터 뮬라이트(3Al2O32SiO2)를 생성시키므로서, 내식성은 저하시키지 않으면서 고온강도 및 열간반복강도가 우수한 마그네시아-크로미아질 내화벽돌을 제공하고자 하는데, 그 목적이 있다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a magnesia-chromiatrile refractory brick, a refractory material incorporated in a vacuum degassing plant, which is a refining vessel for degassing molten steel. By adding a mixed powder, densification by oxidation-expansion of metal aluminum powder during firing and mullite (3Al 2 O 3 2SiO 2 ) are produced from metakaolin, and thus excellent corrosion resistance and high temperature strength and hot repeat strength are excellent. It is an object to provide a magnesia-chromiazyl refractory brick.
상기한 목적달성을 위한 본 발명은 마그네시아-크로미아질 내화벽돌에 있어서, 마그네시아와 크로미아질로 이루어진 내화재료에, 1 : 2의 몰비율로 혼합되고 그 입경이 1.0㎜ 이하인 메타카올린과 금속알루미늄 분말의 혼합분말을, 상기 내화재료 전체중량에 대하여 1∼15중량% 첨가하여 조성되고, 그 조직이 뮬라이트(3Al2O3, 2SiO2)인 열간강도가 우수한 마그네시아-크로미아질 내화벽돌에 관한 것을 그 요지로 한다.The present invention for achieving the above object is in the magnesia-chromia refractory brick, metakaolin and metal aluminum powder having a molar ratio of 1: 2 mixed with a refractory material consisting of magnesia and chromiazil, the particle diameter of which is 1.0 mm or less. To a magnesia-chromia refractory brick having a hot strength of 1 to 15% by weight based on the total weight of the refractory material and having a structure of mullite (3Al 2 O 3 , 2SiO 2 ). That's the point.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950028917A KR970015532A (en) | 1995-09-05 | 1995-09-05 | Magnesia with Excellent Hot-Strength-Chromicil Fire Resistant Brick |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950028917A KR970015532A (en) | 1995-09-05 | 1995-09-05 | Magnesia with Excellent Hot-Strength-Chromicil Fire Resistant Brick |
Publications (1)
Publication Number | Publication Date |
---|---|
KR970015532A true KR970015532A (en) | 1997-04-28 |
Family
ID=66596282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1019950028917A KR970015532A (en) | 1995-09-05 | 1995-09-05 | Magnesia with Excellent Hot-Strength-Chromicil Fire Resistant Brick |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR970015532A (en) |
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1995
- 1995-09-05 KR KR1019950028917A patent/KR970015532A/en not_active Application Discontinuation
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E601 | Decision to refuse application |