| 摘要 |
<p>A hot-blast valve for use between a regenerative heating stove on and a blast furnace downstream therefrom in the direction of flow from the stove to the furnace according to the invention has a valve housing made of metal plate and having a lateral gate pocket. Annular upstream and downstream seats define a flow passage and the upstream seat is made of metal and the downstream seat of solid refractory material. A gate is displaceable between the seats between a closed position engaging same and blocking the passage and an open position clear of same in the pocket with the passage open. A coolant is circulated through the upstream seat only.</p> |
