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A platform for research: civil engineering, architecture and urbanism
METHOD FOR PRODUCING UNBURNED BRICKS FOR MOLTEN IRON VESSEL
To provide a method for producing an unburned brick for molten iron vessels, having excellent corrosion resistance and volume stability (residual expansion properties) even when used in operations under severe molten iron pre-treatment conditions.SOLUTION: A method for producing an unburned brick for molten iron vessels includes: adding an organic binder to a refractory raw material compound; kneading and molding the obtained raw material; and then heat-treating the molded raw material at 800°C or less. The refractory raw material compound comprises: 30-87 mass% of magnesia; 5-30 mass%, in total, of one or more selected from brazing stone, silica stone, and fused silica having a grain size of 1 mm or more and less than 5 mm; 5-18 mass% of graphite; and 0.1-5 mass%, in total, of aluminum and/or an aluminum alloy, wherein a content of one or more selected from brazing stone, silica stone, and fused silica having a grain size of less than 1 mm is 5 mass% or less (including 0) in total, and a content of silicon carbide is 20 mass% or less (including 0).SELECTED DRAWING: None
【課題】溶銑予備処理条件が過酷な操業で使用されても耐食性及び容積安定性（残存膨張性）に優れる溶銑容器用不焼成れんがの製造方法を提供する。【解決手段】耐火原料配合物に有機バインダーを添加して混練し成形後、８００℃以下で熱処理する溶銑容器用不焼成れんがの製造方法である。耐火原料配合物は、マグネシアを３０～８７質量％、粒度１ｍｍ以上５ｍｍ未満のろう石、珪石、及び溶融シリカのうち１種以上を合計で５～３０質量％、黒鉛を５～１８質量％、アルミニウム及び／又はアルミニウム合金を合計で０．１～５質量％含有すると共に、粒度１ｍｍ未満のろう石、珪石、及び溶融シリカのうち１種以上の含有率が合計で５質量％以下（０を含む）、炭化珪素の含有率が２０質量％以下（０を含む）である。【選択図】なし
METHOD FOR PRODUCING UNBURNED BRICKS FOR MOLTEN IRON VESSEL
To provide a method for producing an unburned brick for molten iron vessels, having excellent corrosion resistance and volume stability (residual expansion properties) even when used in operations under severe molten iron pre-treatment conditions.SOLUTION: A method for producing an unburned brick for molten iron vessels includes: adding an organic binder to a refractory raw material compound; kneading and molding the obtained raw material; and then heat-treating the molded raw material at 800°C or less. The refractory raw material compound comprises: 30-87 mass% of magnesia; 5-30 mass%, in total, of one or more selected from brazing stone, silica stone, and fused silica having a grain size of 1 mm or more and less than 5 mm; 5-18 mass% of graphite; and 0.1-5 mass%, in total, of aluminum and/or an aluminum alloy, wherein a content of one or more selected from brazing stone, silica stone, and fused silica having a grain size of less than 1 mm is 5 mass% or less (including 0) in total, and a content of silicon carbide is 20 mass% or less (including 0).SELECTED DRAWING: None
【課題】溶銑予備処理条件が過酷な操業で使用されても耐食性及び容積安定性（残存膨張性）に優れる溶銑容器用不焼成れんがの製造方法を提供する。【解決手段】耐火原料配合物に有機バインダーを添加して混練し成形後、８００℃以下で熱処理する溶銑容器用不焼成れんがの製造方法である。耐火原料配合物は、マグネシアを３０～８７質量％、粒度１ｍｍ以上５ｍｍ未満のろう石、珪石、及び溶融シリカのうち１種以上を合計で５～３０質量％、黒鉛を５～１８質量％、アルミニウム及び／又はアルミニウム合金を合計で０．１～５質量％含有すると共に、粒度１ｍｍ未満のろう石、珪石、及び溶融シリカのうち１種以上の含有率が合計で５質量％以下（０を含む）、炭化珪素の含有率が２０質量％以下（０を含む）である。【選択図】なし
METHOD FOR PRODUCING UNBURNED BRICKS FOR MOLTEN IRON VESSEL
溶銑容器用不焼成れんがの製造方法
TAKAHARA SHINSAKU (author) / TAKAYANAGI YUSAKU (author)
2023-07-24
Patent
Electronic Resource
Japanese
IPC:
B22D
CASTING OF METALS
,
Gießen von Metallen
/
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
Producing permeable blocks and pavement bricks from molten slag
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Method for producing autoclaved bricks from iron tailings
| European Patent Office | 2015