APPARATUS FOR MACHINING BLAST FURNACE HOPPER RING IN PLACE ON THE FURNACE

摘要

Portable machining apparatus to be mounted in the top of a blast furnace for milling a level surface on a blast furnace hopper ring to enable a gas-tight seal to be formed between the blast furnace stack and the large bell hopper. This prevents flue gas and entrained solids from escaping into the atmosphere. The apparatus includes means for moving the cutting head circumferentially, radially, vertically and horizontally.