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某矿火法冶炼鼓,风炉的铅烟危害,是投产以来一直存在的一个问题。由于出炉烟气温度高,烧布袋的事故时有发生,使收尘系统无法正常运行,往往被迫打开炉顶低空放空烟道。因此,每年约有五千吨烟尘、二干吨铅、锌、砷等有害物质,降落在厂区周围,严重地污染了环境。据测定离厂区500米处,粉尘降落量高达168吨/月·平方公里,大气中含铅达0.111mg/m~3,比规定的居住区卫生标准0.0007mg/m~3高出157倍,曾多次发生耕牛死亡事故。
A mine pyrometallurgical drums, stove hazards of lead smoke, has been put into operation has been a problem. As the baked flue gas temperature is high, Burning bag accidents have occurred, the dust collection system can not be normal operation, often forced to open the roof low-altitude venting flue. Therefore, about 5,000 tons of soot and 2 tons of harmful substances, such as lead, zinc and arsenic, landed on the site every year, seriously polluting the environment. It is measured from the plant 500 meters, the amount of dust falling as high as 168 tons / month · square kilometers, the atmosphere of lead up to 0.111mg / m ~ 3, than the provisions of the living standard of health 0.0007mg / m ~ 3 157 times higher, There have been many cattle deaths.