(1) is harmful to human body. Workers exposed to productive dust for a long time, due to long-term inhalation of dust, the accumulation of dust in the lungs gradually increases, and when it reaches a certain amount, it can cause pneumoconiosis. Pneumoconiosis is one of the most important hazards of productive dust to human body. Long-term inhalation of free silica dust can cause silicosis, and long-term inhalation of metal dust such as manganese dust and beryllium dust can cause metal lung such as manganese lung and beryllium lung. Long-term inhalation of coal dust can cause coal lung, etc. Long-term exposure to productive dust can also cause respiratory diseases such as rhinitis, pharyngitis and bronchitis, as well as skin and mucous membrane damage, rash, dermatitis and conjunctival injury. For example, inhalation of lime dust can cause nasal mucosa damage; Inhalation of fibrous dust such as wool and hemp can cause bronchitis and bronchitis; Exposure to asphalt dust in the sun can cause photosensitive dermatitis and conjunctivitis. Inhalation of harmful dust can also cause acute or chronic poisoning. For example, long-term inhalation of manganese dust in welding operations can cause manganese poisoning, and lead smelters are prone to lead poisoning.
(2) Harm to production. Dust in the air in the workplace adheres to advanced and precise instruments, which will reduce the accuracy of these devices; Attached to the transmission and operation parts of mechanical equipment, causing serious wear and shortening the service life; Dust will reduce the quality of some chemical products, mechanical products and electronic products, such as paints, films, miniature bearings, motors, integrated circuits, capacitors, televisions, video recorders and cameras. In the production process, it affects people's vision and reduces work efficiency.
(3) Harm to the environment. Dust floating in the air will make other harmful substances adhere to it, forming serious air pollution. Inhalation of organisms can cause various diseases, and the surfaces of cultural relics, historic sites and buildings will be corroded and polluted. In addition, a large amount of dust suspended in the air will reduce the visibility of the atmosphere, promote the formation of smoke and affect the thermal radiation of the sun.