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To further improve corrosion resistance of zirconia-carbon containing refractories having a high zirconia content.SOLUTION: The zirconia-carbon containing refractory is obtained by kneading a mixture of raw materials together with the organic binder, molding the mixture, and then heat-treating the mixture in a non-oxidizing atmosphere. The mixture of raw materials is obtained by adding 0.5 mass% or more and 3 mass% or less of zirconium silicide to, a blend containing 84 mass% or more and 95 mass% or less of a zirconia raw material and the remainder of mainly consisting of graphite, with respect to 100 mass% of a total amount of the blend. The zirconium silicide contains 80 mass% or more of particles having a diameter of 100 μm or less.SELECTED DRAWING: None
【課題】高ジルコニア含有量のジルコニア−炭素含有耐火物の耐食性をさらに改善する。【解決手段】ジルコニア原料を８４質量％以上９５質量％以下含み，残部が主として黒鉛から成る配合物に，粒径１００μｍ以下の含有率が８０質量％以上である珪化ジルコニウムを前記配合物の合量１００質量％に対して外掛けで０．５質量％以上３質量％以下添加して成る原料配合物を，有機バインダーとともに混練，成形した後，非酸化雰囲気中で熱処理して得られるジルコニア−炭素含有耐火物。【選択図】なし
To further improve corrosion resistance of zirconia-carbon containing refractories having a high zirconia content.SOLUTION: The zirconia-carbon containing refractory is obtained by kneading a mixture of raw materials together with the organic binder, molding the mixture, and then heat-treating the mixture in a non-oxidizing atmosphere. The mixture of raw materials is obtained by adding 0.5 mass% or more and 3 mass% or less of zirconium silicide to, a blend containing 84 mass% or more and 95 mass% or less of a zirconia raw material and the remainder of mainly consisting of graphite, with respect to 100 mass% of a total amount of the blend. The zirconium silicide contains 80 mass% or more of particles having a diameter of 100 μm or less.SELECTED DRAWING: None
【課題】高ジルコニア含有量のジルコニア−炭素含有耐火物の耐食性をさらに改善する。【解決手段】ジルコニア原料を８４質量％以上９５質量％以下含み，残部が主として黒鉛から成る配合物に，粒径１００μｍ以下の含有率が８０質量％以上である珪化ジルコニウムを前記配合物の合量１００質量％に対して外掛けで０．５質量％以上３質量％以下添加して成る原料配合物を，有機バインダーとともに混練，成形した後，非酸化雰囲気中で熱処理して得られるジルコニア−炭素含有耐火物。【選択図】なし
ZIRCONIA-CARBON CONTAINING REFRACTORY
ジルコニア−炭素含有耐火物
TAKAMI KOHEI (author)
2020-06-04
Patent
Electronic Resource
Japanese
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