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PROBLEM TO BE SOLVED: To provide a water blowing trough capable of suppressing repair cost of a porous plate, and capable of operating continuously for a long period of time.SOLUTION: A water blowing trough 20 jets pressurized cooling water W to a blast furnace slag S from a plurality of water discharge holes 22 formed on a porous plate 21, for generating a water-granulated slag. Chips 23 are attached around the water discharge holes 22, and an inner peripheral wall of each of the respective water discharge holes 22 is formed of a wear-resistant material having wear resistance higher than that of the material of the porous plate 21. In addition, a contour of the chip 23 has a cylindrical shape and has a recessed shape in a cross section having a flange 23a on an upstream side.
【課題】多孔板の補修コストを抑制でき、かつ長時間の連続稼働が可能な吹製装置を提供する。【解決手段】高炉スラグＳに対し加圧された冷却水Ｗを多孔板２１に複数形成された吐水孔２２から噴射して水砕スラグを生成する吹製装置２０において、吐水孔２２まわりにはチップ２３が取付けられ、吐水孔２２の内周壁は多孔板２１の材質よりも耐摩耗性が高い耐摩耗性材料からなり、しかもチップ２３の外形は、円筒状で上流側に鍔部２３ａを有する断面凸型状である。【選択図】図２
PROBLEM TO BE SOLVED: To provide a water blowing trough capable of suppressing repair cost of a porous plate, and capable of operating continuously for a long period of time.SOLUTION: A water blowing trough 20 jets pressurized cooling water W to a blast furnace slag S from a plurality of water discharge holes 22 formed on a porous plate 21, for generating a water-granulated slag. Chips 23 are attached around the water discharge holes 22, and an inner peripheral wall of each of the respective water discharge holes 22 is formed of a wear-resistant material having wear resistance higher than that of the material of the porous plate 21. In addition, a contour of the chip 23 has a cylindrical shape and has a recessed shape in a cross section having a flange 23a on an upstream side.
【課題】多孔板の補修コストを抑制でき、かつ長時間の連続稼働が可能な吹製装置を提供する。【解決手段】高炉スラグＳに対し加圧された冷却水Ｗを多孔板２１に複数形成された吐水孔２２から噴射して水砕スラグを生成する吹製装置２０において、吐水孔２２まわりにはチップ２３が取付けられ、吐水孔２２の内周壁は多孔板２１の材質よりも耐摩耗性が高い耐摩耗性材料からなり、しかもチップ２３の外形は、円筒状で上流側に鍔部２３ａを有する断面凸型状である。【選択図】図２
WATER BLOWING TROUGH
吹製装置
WAKANA YOSHIHITO (author)
2015-06-22
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
WATER-GUIDING TROUGH AND WATER PURIFICATION FACILITY WITH WATER-GUIDING TROUGH
| European Patent Office | 2019