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REFRACTORY BRICK AND METHOD FOR PRODUCING THE SAME
To provide a dense refractory brick made of alumina, silica, silicon carbide and carbon, the refractory brick having excellent durability not inferior to that of refractory bricks made of virgin raw materials only, even when a large amount of refractory waste with relatively small particle size is blended.SOLUTION: A refractory brick contains 17 mass% or more and 90 mass% or less, preferably more than 60 mass% and 90 mass% or less, of refractory waste x with a grain size of 8 mm or less in a total refractory material, and further contains 3 mass% or more of refractory waste with a grain size of more than 2.36 mm out of the refractory waste x in the total refractory material, wherein a content ratio (by mass) of refractory waste with a grain size of more than 2.36 mm to refractory waste with a grain size of 2.36 mm or less and more than 1 mm out of the refractory waste x, is 1:1 to 1:20, or the refractory brick contains more than 1 mass% of refractory waste with a grain size of more than 2.8 mm out of the refractory waste x in the total refractory raw material, wherein a content ratio (by mass) of refractory waste with a grain size of more than 2.8 mm to refractory waste with a grain size of 2.8 mm or less and more than 1 mm out of the refractory waste x in the total refractory raw material is 1:6 to 1:69.SELECTED DRAWING: Figure 1
【課題】アルミナ・シリカ・炭化珪素・カーボン質の耐火物煉瓦であって、耐火物屑を多く配合し、且つ粒径が比較的小さい耐火物屑を多く配合しても、バージン原料のみを使用した耐火物煉瓦に劣らない優れた耐用性を有する緻密質な耐火物煉瓦を提供する。【解決手段】粒径８ｍｍ以下の耐火物屑xを、全耐火物原料中で１７質量％以上９０質量％以下、好ましくは６０質量％超９０質量％以下含有し、さらに、耐火物屑xのうちの粒径２．３６ｍｍ超の耐火物屑を、全耐火物原料中で３質量％以上含有し、且つ耐火物屑xのうちの粒径２．３６ｍｍ超の耐火物屑と粒径２．３６ｍｍ以下１ｍｍ超の耐火物屑の含有比率（質量比）を１：１～１：２０とするか、若しくは、耐火物屑xのうちの粒径２．８ｍｍ超の耐火物屑を、全耐火物原料中で１質量％以上含有し、且つ耐火物屑xのうちの粒径２．８ｍｍ超の耐火物屑と粒径２．８ｍｍ以下１ｍｍ超の耐火物屑の含有比率（質量比）を１：６～１：６９とする。【選択図】図１
REFRACTORY BRICK AND METHOD FOR PRODUCING THE SAME
To provide a dense refractory brick made of alumina, silica, silicon carbide and carbon, the refractory brick having excellent durability not inferior to that of refractory bricks made of virgin raw materials only, even when a large amount of refractory waste with relatively small particle size is blended.SOLUTION: A refractory brick contains 17 mass% or more and 90 mass% or less, preferably more than 60 mass% and 90 mass% or less, of refractory waste x with a grain size of 8 mm or less in a total refractory material, and further contains 3 mass% or more of refractory waste with a grain size of more than 2.36 mm out of the refractory waste x in the total refractory material, wherein a content ratio (by mass) of refractory waste with a grain size of more than 2.36 mm to refractory waste with a grain size of 2.36 mm or less and more than 1 mm out of the refractory waste x, is 1:1 to 1:20, or the refractory brick contains more than 1 mass% of refractory waste with a grain size of more than 2.8 mm out of the refractory waste x in the total refractory raw material, wherein a content ratio (by mass) of refractory waste with a grain size of more than 2.8 mm to refractory waste with a grain size of 2.8 mm or less and more than 1 mm out of the refractory waste x in the total refractory raw material is 1:6 to 1:69.SELECTED DRAWING: Figure 1
【課題】アルミナ・シリカ・炭化珪素・カーボン質の耐火物煉瓦であって、耐火物屑を多く配合し、且つ粒径が比較的小さい耐火物屑を多く配合しても、バージン原料のみを使用した耐火物煉瓦に劣らない優れた耐用性を有する緻密質な耐火物煉瓦を提供する。【解決手段】粒径８ｍｍ以下の耐火物屑xを、全耐火物原料中で１７質量％以上９０質量％以下、好ましくは６０質量％超９０質量％以下含有し、さらに、耐火物屑xのうちの粒径２．３６ｍｍ超の耐火物屑を、全耐火物原料中で３質量％以上含有し、且つ耐火物屑xのうちの粒径２．３６ｍｍ超の耐火物屑と粒径２．３６ｍｍ以下１ｍｍ超の耐火物屑の含有比率（質量比）を１：１～１：２０とするか、若しくは、耐火物屑xのうちの粒径２．８ｍｍ超の耐火物屑を、全耐火物原料中で１質量％以上含有し、且つ耐火物屑xのうちの粒径２．８ｍｍ超の耐火物屑と粒径２．８ｍｍ以下１ｍｍ超の耐火物屑の含有比率（質量比）を１：６～１：６９とする。【選択図】図１
REFRACTORY BRICK AND METHOD FOR PRODUCING THE SAME
耐火物煉瓦およびその製造方法
YOSHIDA KEISUKE (author) / MATSUNAGA HISAHIRO (author) / TOMITANI NAOSHI (author) / IIDA ATSUHISA (author)
2024-01-24
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
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