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CASTABLE REFRACTORY FOR BLAST FURNACE TROUGH METAL PART
To prevent a perforation phenomenon from occurring in a castable refractory for a blast furnace trough metal part.SOLUTION: A castable refractory for a blast furnace trough metal part comprises a refractory raw material and a binder, and is applied to a metal part in a lining of a blast furnace trough, wherein the castable refractory comprises, based on 100 mass% of the refractory raw material: 5 mass% or more and 15 mass% or less of a carbonaceous raw material; 8 mass% or more and 20 mass% or less of a silicon carbide raw material; and 0.1 mass% or more and 2 mass% or less of boron carbide. A content of particles having a grain diameter of less than 75 μm accounts for 15 mass% or more and 30 mass% or less of 100 mass% of the refractory raw material. A content of silicon carbide superfines having a grain diameter of 1 μm or more and 20 μm or less in the silicon carbide raw material accounts for 0.1 mass% or more and 5 mass% or less of 100 mass% of the refractory raw material. The balance in the refractory raw material mainly comprises at least one of a spinel raw material and an alumina raw material.SELECTED DRAWING: None
【課題】高炉樋メタル部用のキャスタブル耐火物において、穴あき現象の発生を抑制する。【解決手段】耐火原料及び結合剤を含有し、高炉樋の内張りのメタル部に適用される高炉樋メタル部用のキャスタブル耐火物であって、前記耐火原料１００質量％に占める割合で、炭素質原料を５質量％以上１５質量％以下、炭化珪素原料を８質量％以上２０質量％以下、炭化硼素を０．１質量％以上２質量％以下含有し、粒径７５μｍ未満の粒子の含有量が前記耐火原料１００質量％に占める割合で１５質量％以上３０質量％以下であり、前記炭化珪素原料のうち粒径１μｍ以上２０μｍ以下の炭化珪素超微粉の含有量が前記耐火原料１００質量％に占める割合で０．１質量％以上５質量％以下であり、前記耐火原料の残部は、主としてスピネル原料及びアルミナ原料の少なくとも１つからなる。【選択図】なし
CASTABLE REFRACTORY FOR BLAST FURNACE TROUGH METAL PART
To prevent a perforation phenomenon from occurring in a castable refractory for a blast furnace trough metal part.SOLUTION: A castable refractory for a blast furnace trough metal part comprises a refractory raw material and a binder, and is applied to a metal part in a lining of a blast furnace trough, wherein the castable refractory comprises, based on 100 mass% of the refractory raw material: 5 mass% or more and 15 mass% or less of a carbonaceous raw material; 8 mass% or more and 20 mass% or less of a silicon carbide raw material; and 0.1 mass% or more and 2 mass% or less of boron carbide. A content of particles having a grain diameter of less than 75 μm accounts for 15 mass% or more and 30 mass% or less of 100 mass% of the refractory raw material. A content of silicon carbide superfines having a grain diameter of 1 μm or more and 20 μm or less in the silicon carbide raw material accounts for 0.1 mass% or more and 5 mass% or less of 100 mass% of the refractory raw material. The balance in the refractory raw material mainly comprises at least one of a spinel raw material and an alumina raw material.SELECTED DRAWING: None
【課題】高炉樋メタル部用のキャスタブル耐火物において、穴あき現象の発生を抑制する。【解決手段】耐火原料及び結合剤を含有し、高炉樋の内張りのメタル部に適用される高炉樋メタル部用のキャスタブル耐火物であって、前記耐火原料１００質量％に占める割合で、炭素質原料を５質量％以上１５質量％以下、炭化珪素原料を８質量％以上２０質量％以下、炭化硼素を０．１質量％以上２質量％以下含有し、粒径７５μｍ未満の粒子の含有量が前記耐火原料１００質量％に占める割合で１５質量％以上３０質量％以下であり、前記炭化珪素原料のうち粒径１μｍ以上２０μｍ以下の炭化珪素超微粉の含有量が前記耐火原料１００質量％に占める割合で０．１質量％以上５質量％以下であり、前記耐火原料の残部は、主としてスピネル原料及びアルミナ原料の少なくとも１つからなる。【選択図】なし
CASTABLE REFRACTORY FOR BLAST FURNACE TROUGH METAL PART
高炉樋メタル部用のキャスタブル耐火物
EGUCHI YASUHIRO (author)
2021-04-01
Patent
Electronic Resource
Japanese
IPC:
C04B
Kalk
,
LIME
/
C21B
Gewinnung von Eisen oder Stahl
,
MANUFACTURE OF 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