| 摘要 |
A sliding gate valve for controlling the flow of molten metal includes a refractory sliding plate mounted on a movable frame and cooperating with a fixed base plate. The sliding plate is of zirconium oxide or alumina and affords an opening which accommodates a wear insert of magnesite defining a flow opening in communication with a flow opening defined by a replaceable refractory outlet sleeve. The outlet sleeve, which is preferably also of magnesite, is removably connected by a mounting to move with the sliding plate. The wear insert is connected to the associated replaceable outlet to constitute a wear part unit thereby permitting removal of the wear insert from the sliding plate without disassembly of the valve. The valve is similar to that disclosed in GB-2,164,592A. |
