| 摘要 |
PURPOSE:To regulate the falling down and chemical erosion of refractory and to achieve the safety long life of furnace wall, by combining the stave-cooling system on the outside of furnace side into the lateral rectangular cooling board connection system. CONSTITUTION:A cooling board 11 is made from cast iron, etc., of which the inside is, in a casting manner, arranged with a cooling tube 12, situated at almost central part of furnace wall thickness, each cooling board being surrounded in circumferential direction of furnace body by lateral connection, and such ring shape boards 11 are, by a suitable interval, arranged in direction of height. Longitudinal row cooling staves 16 are, by a suitable interval, arranged in circumferential direction of furnace body near peripheral shell 17 of this cooling zone on the inside of furnace side and they construct the cooling zone on the outside of furnace side. This two layers cooling zone is constructed by working unshaped refractories 14, etc. in surroundings of the stave 16 and board 11 fixed to the shelf 17. Thus, the refractory 14 is wholly cooled and strongly held with the board 11, and its falling down can be protected by reducing its wearing. Even though the board 11 is exposed after several years operation, the cooling zone on shelf side is in a good condition and the shell is not heated at a high temperature. |
