asbestos
Asbestos, 5.5FeO, 1.5MgO, 8SiO2, H2O) contains a certain amount of water in the composition of the natural fibrous crystal; White silk silky smooth and elastic. The most common are three kinds: chrysotile asbestos (white asbestos, serpentine asbestos), asbestos (brown asbestos) and crocidolite (blue asbestos, amphibole asbestos, actinolite, shaleite, and asbestos asbestos). . Because of the softness of asbestos fibers, it has a wide range of uses in insulation, insulation, sound insulation, high temperature resistance, acid and alkali resistance, corrosion resistance and abrasion resistance, such as refractory asbestos textiles in commercial, public utilities and industrial facilities. Water pipes, insulation boards and other asbestos cement products, and various insulation materials widely used in construction, electrical appliances, automobiles, household goods and so on. On the other hand, extremely tiny asbestos fibers fly into the air, was inhaled into the human lungs, after 20 to 40 years of incubation period, it is easy to induce pneumoconiosis, lung cancer and other lung diseases. This is in the world by varying degrees of concern about the issue of asbestos pollution. In Europe, it is predicted that by 2020 due to asbestos pollution caused by lung cancer and death will reach 500,000 people. While in Japan, it is predicted that 2040 will have 100,000 people died. ...