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MAGNESIA CARBON REFRACTORY COMPOSITION AND METHOD FOR PRODUCING MAGNESIA CARBON BRICK
To reduce mechanical spalling such as cracking generated in magnesia carbon bricks with lapse of time.SOLUTION: A magnesia carbon refractory composition comprising a mixture of (i) a magnesia raw material, (ii) a carbon raw material, (iii) fine particles of magnesia having a particle size distribution in which the content (by volume) of particles having a particle size of 10 μm or less, measured by diffraction/scattering, is 90 mass% or more, and (iv) an organic binder having a fixed carbon content of less than 25 mass%. The refractory material is imparted with creep property, and hence mechanical spalling such as generation of cracking with lapse of time can be reduced.SELECTED DRAWING: None
【課題】マグネシアカーボンれんがに発生する迫割れ等の機械的スポーリングを低減する。【解決手段】レーザー回折・散乱法により測定した粒度分布において粒子径１０μｍ以下の相対粒子量（体積基準）が９０質量％以上であるマグネシア微粉をマグネシア原料とカーボン原料の混合物に加えるとともに、固定炭素分２５質量％未満の有機バインダーを加える。これによって、マグネシアカーボン質耐火物にクリープ性が付与され、迫割れ等の機械的スポーリングが低減する。【選択図】なし
MAGNESIA CARBON REFRACTORY COMPOSITION AND METHOD FOR PRODUCING MAGNESIA CARBON BRICK
To reduce mechanical spalling such as cracking generated in magnesia carbon bricks with lapse of time.SOLUTION: A magnesia carbon refractory composition comprising a mixture of (i) a magnesia raw material, (ii) a carbon raw material, (iii) fine particles of magnesia having a particle size distribution in which the content (by volume) of particles having a particle size of 10 μm or less, measured by diffraction/scattering, is 90 mass% or more, and (iv) an organic binder having a fixed carbon content of less than 25 mass%. The refractory material is imparted with creep property, and hence mechanical spalling such as generation of cracking with lapse of time can be reduced.SELECTED DRAWING: None
【課題】マグネシアカーボンれんがに発生する迫割れ等の機械的スポーリングを低減する。【解決手段】レーザー回折・散乱法により測定した粒度分布において粒子径１０μｍ以下の相対粒子量（体積基準）が９０質量％以上であるマグネシア微粉をマグネシア原料とカーボン原料の混合物に加えるとともに、固定炭素分２５質量％未満の有機バインダーを加える。これによって、マグネシアカーボン質耐火物にクリープ性が付与され、迫割れ等の機械的スポーリングが低減する。【選択図】なし
MAGNESIA CARBON REFRACTORY COMPOSITION AND METHOD FOR PRODUCING MAGNESIA CARBON BRICK
マグネシアカーボン質耐火組成物およびマグネシアカーボン質れんがの製造方法。
HIRAYAMA KENTARO (author) / INOUE KAZUHIRO (author) / MURAKAMI KOYO (author) / TOMITANI NAOSHI (author)
2020-08-13
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
F27D
Einzelheiten oder Zubehör für Industrieöfen, Schachtöfen, Brennöfen oder Retorten, soweit sie nicht auf eine Ofenart eingeschränkt sind
,
DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
METHOD OF PRODUCING MAGNESIA-CARBON BRICK AND MAGNESIA-CARBON BRICK
| European Patent Office | 2015
| European Patent Office | 2024