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REFRACTORY FOR CONVERTER TUYERE
PROBLEM TO BE SOLVED: To provide a refractory for a converter tuyere excellent in tolerance.SOLUTION: In an MgO-C refractory used in the tuyere part of the bottom in a converter in which a gas is blown from the tuyere, and having a C content of 10 to 25 mass%, and the balance MgO, the refractory contains carbon fiber of 5 mass% or higher also, the addition ratio of the carbon fiber occupied in the total C is 75% or lower, and the refractory is impregnated with a binder in an amount equivalent to 6.0 to 7.5 mass% by excluded number.SELECTED DRAWING: Figure 1
【課題】耐用性に優れた転炉羽口用耐火物を提案するところにある。【解決手段】炉底からガスを吹込む転炉の炉底羽□部分で使用され、Ｃ量が１０〜２５ｍａｓｓ％で、残部がＭｇＯからなるＭｇＯ−Ｃ耐火物において、この耐火物中には５ｍａｓｓ％以上の炭素繊維を含有しており、かつ全Ｃのうちに占めるこの炭素繊維の添加比率は７５％以下であり、そしてこの耐火物には、外数で６．０〜７．５ｍａｓｓ％に相当する量の粘結剤が含浸されている転炉羽口用耐火物。【選択図】図１
REFRACTORY FOR CONVERTER TUYERE
PROBLEM TO BE SOLVED: To provide a refractory for a converter tuyere excellent in tolerance.SOLUTION: In an MgO-C refractory used in the tuyere part of the bottom in a converter in which a gas is blown from the tuyere, and having a C content of 10 to 25 mass%, and the balance MgO, the refractory contains carbon fiber of 5 mass% or higher also, the addition ratio of the carbon fiber occupied in the total C is 75% or lower, and the refractory is impregnated with a binder in an amount equivalent to 6.0 to 7.5 mass% by excluded number.SELECTED DRAWING: Figure 1
【課題】耐用性に優れた転炉羽口用耐火物を提案するところにある。【解決手段】炉底からガスを吹込む転炉の炉底羽□部分で使用され、Ｃ量が１０〜２５ｍａｓｓ％で、残部がＭｇＯからなるＭｇＯ−Ｃ耐火物において、この耐火物中には５ｍａｓｓ％以上の炭素繊維を含有しており、かつ全Ｃのうちに占めるこの炭素繊維の添加比率は７５％以下であり、そしてこの耐火物には、外数で６．０〜７．５ｍａｓｓ％に相当する量の粘結剤が含浸されている転炉羽口用耐火物。【選択図】図１
REFRACTORY FOR CONVERTER TUYERE
転炉羽口用耐火物
HOSOHARA SEIJI (author) / KUWAYAMA MICHIHIRO (author) / IIDA ATSUHISA (author) / YOSHIOKA HIROKI (author)
2016-04-07
Patent
Electronic Resource
Japanese
CEMENT MORTAR OF REFRACTORY BRICK FOR BLAST FURNACE TUYERE AND BLAST FURNACE TUYERE STRUCTURE
| European Patent Office | 2018
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