我厂铸造车间有18M~2退火窑一座,担负着铸件退火和部分铸型(芯)的烘干任务。该窑有四个燃烧室,原来采用手工加煤,每逢烧窑时,炉窑周围煤烟弥漫,烟囱出口处煤烟象一条巨龙,对周围空气污染严重。85年12月我们分别在四个燃烧室上安装了下饲式消烟燃煤机后,彻底改变了烟囱冒黑烟的局面。 I plant casting workshop has 18M ~ 2 annealing furnace, responsible for casting annealing and some mold (core) of the drying task. The kiln has four combustion chambers, the original use of coal by hand, each kiln, the percolation around the furnace soot, chimney exit soot like a dragon, the surrounding air pollution is serious. In December of 1985, we completely changed the black smoke in the chimney after we installed the feed-down smoke-burning coal-fired machine on the four combustion chambers respectively.