TAPHOLE FOR A SHAFT FURNACE, ESPECIALLY A BLAST FURNACE

摘要

Taphole for a shaft furnace, especially a blast furnace. The taphole comprises an inner channel (28) extending outside of the wall of the shaft furnace (12) through an outer pipe (48, 62, 60, 70). The inner channel (28) and the outer pipe (48, 62, 60, 70) are designed so that the melt product (28) head loss is considerably lower than the melt product head/loss in the outer pipe (48, 62, 60, 70). The outer pipe (48, 62, 60, 70) comprises at least one constricting section for the flow of the melt product provided in an easily interchangeable wear part, for example, plates (60, 62) mounted in a support (50).