目前一些燃油、燃煤气的大型烘干室和大型砖砌的火花熄灭室拱顶拱脚的砌筑,大都是采用特殊型砖或用手工砍削制成型砖进行砌筑的,这种特殊型砖因所需数量有限,因而价格昂贵,一般单位均不采用,而用手工来砍削标准型砖制成这种特殊型砖,则耐火砖的损耗量就相当大,同时工人的劳动强度大,成本高,据粗累计算,每米长的拱 At present, some large-scale drying rooms for fuel oil and gas, as well as masonry for large-scale brickwork of spark-quenching room arch arches, are mostly made of special-type bricks or hand-cut formed bricks, Special type of brick due to the limited number of required and therefore expensive, the general units are not used, and hand-cut standard brick made of this special type of brick, then the loss of refractory bricks is considerable, while the labor of workers High strength, high cost, according to rough calculations, each meter long arch