我国五小工业球墨铸铁的生产多采用冲入法进行球化处理。在球化处理过程中,会瞬时产生大量的氧化镁和稀土元素白色浓烟,使劳动条件恶化。我们在广东省兴宁县农机厂测定,球化处理时产生的烟尘主要成分为镁、铁、钡、铝、钴等金属氧化物。炉前操作点烟尘浓度为126.7～132.8毫克/ China’s five small industrial production of ductile iron and more use of law into the ball treatment. In the process of spheroidization, a large amount of magnesia and rare-earth white smoke will be instantaneously generated, which deteriorates the working conditions. We Xingning County, Guangdong Province, agricultural machinery factory determination, the main component of the soot generated when the ball is magnesium, iron, barium, aluminum, cobalt and other metal oxides. Operating temperature before the smoke dust concentration 126.7 ~ 132.8 mg /