A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BRICK FOR BLAST FURNACE HEARTH, BLAST FURNACE HEARTH USING THE SAME, AND METHOD FOR PRODUCING BRICK FOR BLAST FURNACE HEARTH
PROBLEM TO BE SOLVED: To provide a brick for a blast furnace hearth, which has improved molten iron resistance and slag resistance, and to improve a service life of the blast furnace hearth.SOLUTION: This invention relates to a brick for a blast furnace hearth, which can be obtained by: adding a binder to a refractory raw material compound and then kneading the same to prepare a molded body; and baking the molded body at 1,000°C or higher under a nitrogen atmosphere or in carbon grains, the refractory raw material comprising 80 mass% or more and 95 mass% or less of alumina, 1 mass% or more and 15 mass% or less of aluminum, and 4 mass% or more and 10 mass% or less of flake graphite having a grain size of 0.2 mm or lower, and having an Si component of 3.0 mass% or lower (including 0).SELECTED DRAWING: None
【課題】耐溶銑性と耐スラグ性を向上させた高炉炉床用れんがを提供しさらに高炉炉床の寿命を向上する。【解決手段】アルミナを８０質量％以上９５量％以下、アルミニウムを１質量％以上１５質量％以下、及び粒度が０．２ｍｍ以下の鱗状黒鉛を４質量％以上１０質量％以下含有し、しかもＳｉ成分が３．０質量％以下（０を含む）である耐火原料配合物に、バインダーを添加して混練し成形後、窒素雰囲気下又は炭素粒中で１０００℃以上で焼成して得られる高炉炉床用れんが。【選択図】なし
BRICK FOR BLAST FURNACE HEARTH, BLAST FURNACE HEARTH USING THE SAME, AND METHOD FOR PRODUCING BRICK FOR BLAST FURNACE HEARTH
PROBLEM TO BE SOLVED: To provide a brick for a blast furnace hearth, which has improved molten iron resistance and slag resistance, and to improve a service life of the blast furnace hearth.SOLUTION: This invention relates to a brick for a blast furnace hearth, which can be obtained by: adding a binder to a refractory raw material compound and then kneading the same to prepare a molded body; and baking the molded body at 1,000°C or higher under a nitrogen atmosphere or in carbon grains, the refractory raw material comprising 80 mass% or more and 95 mass% or less of alumina, 1 mass% or more and 15 mass% or less of aluminum, and 4 mass% or more and 10 mass% or less of flake graphite having a grain size of 0.2 mm or lower, and having an Si component of 3.0 mass% or lower (including 0).SELECTED DRAWING: None
【課題】耐溶銑性と耐スラグ性を向上させた高炉炉床用れんがを提供しさらに高炉炉床の寿命を向上する。【解決手段】アルミナを８０質量％以上９５量％以下、アルミニウムを１質量％以上１５質量％以下、及び粒度が０．２ｍｍ以下の鱗状黒鉛を４質量％以上１０質量％以下含有し、しかもＳｉ成分が３．０質量％以下（０を含む）である耐火原料配合物に、バインダーを添加して混練し成形後、窒素雰囲気下又は炭素粒中で１０００℃以上で焼成して得られる高炉炉床用れんが。【選択図】なし
BRICK FOR BLAST FURNACE HEARTH, BLAST FURNACE HEARTH USING THE SAME, AND METHOD FOR PRODUCING BRICK FOR BLAST FURNACE HEARTH
高炉炉床用れんが及びこれを使用した高炉炉床並びに高炉炉床用れんがの製造方法
MISHIMA MASAAKI (author) / KAWAOKA KOJI (author) / NAKAMURA HITOSHI (author) / TAMURA YOSHIHIRO (author)
2018-04-12
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
| European Patent Office | 2020
| European Patent Office | 2018