论文部分内容阅读
自1970—1979年,我们对兰州铝厂电解车间工龄在12年以上的175名电解工进行了临床和X线胸片动态观察。现将所见报告如下。 车间生产情况 铝生产采用高温电解法,主要原料为氧化铝粉。将氧化铝粉放入电解槽内,加入少量氟化铝及冰晶石,进行电解,温度960℃,电流强度为6—7万安培。生产中职业危害主要为粉尘,厂房内氧化铝粉尘浓度平均为160毫克/立方米,分散度2—5微米占73.4％,5—10微米占17.8％,10微米以上占8.8％,粉尘内含游离二氧化硅平
From 1970 to 1979, we conducted clinical and X-ray dynamic observations of 175 electrolytes in Lanzhou Aluminum Electrolytic Plant with a service life of over 12 years. Now see the report as follows. Workshop production Aluminum production using high-temperature electrolysis method, the main raw material for alumina powder. The alumina powder into the electrolyzer, adding a small amount of aluminum fluoride and cryolite, electrolysis, temperature 960 ℃, the current intensity of 6-7 million amperes. Occupational hazards in production are mainly dust, the average concentration of alumina dust in the plant is 160 mg / m 3, the dispersion degree is 2-5 m, accounting for 73.4%, 5-10 m, accounting for 17.8% and 10 m, accounting for 8.8% Free silica flat