Steel structure Furnace brick body Furnace door and transmission mechanism: 2 sets, ... To get more temperature holding effect of the entire furnace, clay bricks in 113mm thickness are laid between ... varies a lot on the top of the furnace, chromium-magnesium bricks, which have better thermal stability ... rising flue at the tail of the furnace, which goes to horizontal flue, lower flue, and underpass flue ...