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石棉是一类纤维状的硅酸盐矿物,纤维柔软.最常见的是蛇纹石石棉,其成分是镁的硅酸盐;还有成分为含镁、钙的硅酸盐,或含镁、钙、铁的硅酸盐的其它品种的石棉.石棉多为白色、灰色或浅绿色,耐高温、耐酸碱,对热和电的绝缘性好.纤维长的石棉可制成石棉绳、石棉布等,用来制作防护用品,如炼钢工人的工作服;纤维短的可与水泥一起加水拌合后压制成石棉水泥制品,如可用来铺盖屋顶的石棉瓦,也可用作保温材料、隔音材料、过滤介质等.可见石棉的用途很广泛.
Asbestos is a group of fibrous silicate minerals, fiber soft, the most common is serpentine asbestos, its composition is magnesium silicate; also contains magnesium, calcium silicate, or containing magnesium, Calcium, iron silicate other varieties of asbestos. Asbestos are mostly white, gray or light green, high temperature, acid and alkali, good thermal and electrical insulation. Fiber asbestos long asbestos rope can be made of stone Cotton cloth, etc., used to make protective equipment, such as steel workers’ work clothes; short fibers can be mixed with cement and pressed into asbestos cement products, such as roofing asbestos tile can also be used as insulation materials, noise Materials, filter media, etc. Visible asbestos is widely used.