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高炉炉底的砖缝是砌体的一个薄弱环节。铁水和熔渣通过砖缝渗入砌体,破坏炉衬结构,降低炉衬的使用寿命。为了提高炉衬的使用寿命,曾将高炉炉底砖缝标准由1毫米改为0.5毫米,并改用高铝砖代替粘土砖砌筑大型高炉炉底,炉龄有所延长。这样,对砖的平整度要求更加严格,以往人工粗磨已不能适应要求,就改用磨砖机对每块砖进行精细研磨加工;而且将磨好的砖在特制的大型铸铁平台上预装,逐块编号,装筐运进炉内,“对号入座”砌筑。但是,许多地方企业难以具备以上工艺条件,这就不能适应钢铁工业发展需要。更为
The brick seam at the bottom of the blast furnace is a weak link in the masonry. The molten iron and molten slag penetrate the masonry through the brick seams, destroying the lining structure and reducing the service life of the lining. In order to increase the service life of the lining, the standard of the bottom seam of the blast furnace has been changed from 1 mm to 0.5 mm, and the use of high-alumina bricks instead of clay bricks has been used to build large-scale blast furnace hearths and the furnace life has been extended. In this way, the flatness of the bricks is more stringent. In the past, artificial roughing has not been adapted to the requirements. Instead, a fine grinding process is performed on each brick using a grinding machine; and the polished bricks are pre-assembled on a special large cast iron platform. , Numbered block by block, basket loaded into the furnace, “pair of seated ” masonry. However, it is difficult for many local enterprises to have the above process conditions, which cannot meet the needs of the development of the steel industry. Even more