1. Dust hazard: The dust produced in the production process of aluminum plant mainly includes alumina dust, petroleum coke dust and asphalt dust.
2. Toxic hazards Workers are mainly exposed to fluoride, sulfide, asphalt smoke and carbon monoxide.
3. High-temperature hazards According to the current national standard "Classification of High-temperature Operations", operations with an average WBGT index equal to or greater than 25℃ in the workplace are high-temperature operations. The electrolysis temperature of aluminum reduction cell is as high as 940℃ ~ 960℃, which is the main production heat source.
4. Noise hazards Noise-generating equipment mainly includes purification system fans, carbon system crushers, ball mills, molding machines, feeders, vibrating screens, conveyors, roasting flue gas purification system fans, dust removal fans, etc.
5. According to the evaluation of the World Health Organization, the daily intake of aluminum is 0 ~ 0.6 mg/kg, in which kg refers to human body weight, that is, the allowable intake for a 60kg person is 36mg. According to GB2760-20 1 1, the residual aluminum should be less than or equal to 100mg/kg.
Aluminum accumulates slowly in human body, and its toxicity is slow, which is not easy to detect. However, once the toxic reaction of metabolic disorder occurs, the consequences are very serious and must be paid attention to.
Extended data:
Ways to reduce harm
1, avoid using aluminum cookware.
2. Eat less fried dough sticks, aluminum-packed candy and other foods, and drink less canned soft drinks.
3. Some drugs are made of aluminum-containing substances, so it is necessary to reduce the use of aluminum-containing drugs, such as Al(OH)3, which can neutralize gastric acid.
Baidu Encyclopedia-Aluminum (Toxicological Properties)