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A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING MAGNESIA-CHROME BRICK
To provide a method for producing a magnesia-chrome brick that has excellent iron oxide resistance and heat spalling resistance.SOLUTION: Provided is a method for producing magnesia-chrome brick in which a binder is added to a refractory raw material blend and is subjected to kneading and molding, followed by firing. The refractory raw material blend contains electromelted magnesia-chrome that contains Cr2O3 by 25 to 76 mass% by 85 mass% or more, and the contained amount of zirconia is 1 mass% or less (including 0). The electromelted magnesia-chrome has a grain size configuration in which, in terms of percentage occupying in 100 mass% of refractory raw material blend, a grain size of 3 mm or more and less than 5 mm is 5 to 25 mass%, a grain size of 1 mm or more and less than 3 mm is 20 to 40 mass%, and a grain size of less than 1 mm is 30 to 60 mass%.SELECTED DRAWING: None
【課題】耐酸化鉄性及び耐熱スポーリング性に優れるマグクロれんがの製造方法を提供する。【解決手段】耐火原料配合物にバインダーを添加して混練し成形後、焼成する、マグクロれんがの製造方法である。耐火原料配合物は、Ｃｒ２Ｏ３を２５～７６質量％含有する電融マグクロを８５質量％以上含有し、ジルコニアの含有量は１質量％以下（０を含む。）である。前記電融マグクロの粒度構成は、耐火原料配合物１００質量％に占める割合で、粒径３ｍｍ以上５ｍｍ未満が５～２５質量％、粒径１ｍｍ以上３ｍｍ未満が２０～４０質量％、粒径１ｍｍ未満が３０～６０質量％である。【選択図】なし
METHOD FOR PRODUCING MAGNESIA-CHROME BRICK
To provide a method for producing a magnesia-chrome brick that has excellent iron oxide resistance and heat spalling resistance.SOLUTION: Provided is a method for producing magnesia-chrome brick in which a binder is added to a refractory raw material blend and is subjected to kneading and molding, followed by firing. The refractory raw material blend contains electromelted magnesia-chrome that contains Cr2O3 by 25 to 76 mass% by 85 mass% or more, and the contained amount of zirconia is 1 mass% or less (including 0). The electromelted magnesia-chrome has a grain size configuration in which, in terms of percentage occupying in 100 mass% of refractory raw material blend, a grain size of 3 mm or more and less than 5 mm is 5 to 25 mass%, a grain size of 1 mm or more and less than 3 mm is 20 to 40 mass%, and a grain size of less than 1 mm is 30 to 60 mass%.SELECTED DRAWING: None
【課題】耐酸化鉄性及び耐熱スポーリング性に優れるマグクロれんがの製造方法を提供する。【解決手段】耐火原料配合物にバインダーを添加して混練し成形後、焼成する、マグクロれんがの製造方法である。耐火原料配合物は、Ｃｒ２Ｏ３を２５～７６質量％含有する電融マグクロを８５質量％以上含有し、ジルコニアの含有量は１質量％以下（０を含む。）である。前記電融マグクロの粒度構成は、耐火原料配合物１００質量％に占める割合で、粒径３ｍｍ以上５ｍｍ未満が５～２５質量％、粒径１ｍｍ以上３ｍｍ未満が２０～４０質量％、粒径１ｍｍ未満が３０～６０質量％である。【選択図】なし
METHOD FOR PRODUCING MAGNESIA-CHROME BRICK
マグクロれんがの製造方法
EGAMI MASAYUKI (author) / OKADA TAKESHI (author) / TAMAKI TAKEYUKI (author) / NOMURA AKIRA (author)
2022-04-08
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
C21C
Weiterverarbeiten von Roheisen, z.B. Feinen, Herstellen von Schweißeisen oder Stahl
,
PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL
/
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