论文部分内容阅读
石棉是一类具有特殊天然纤维状结构,且能分解为细纤维的矿物。从化学成分来看,石棉由二氧化硅、氧化镁、氧化钙(铁或铝)和结晶水等组成的硅酸盐。石棉主要分成两大类。一类是温石棉(蛇纹石类),占地球石棉储藏量的绝大多数,纤维长、柔软、有弹性,工业应用价值大;另一类是角闪石石棉,纤维粗糙、挺直并坚硬,由于具有致癌作用,现已被各国禁止开采和使用。石棉本身并无毒害,它的最大危害来自于它的纤维,这是一种肉
Asbestos is a group of minerals that have a special natural fibrous structure that breaks down into fine fibers. From a chemical point of view, asbestos is composed of silica, magnesia, calcium oxide (iron or aluminum) and crystal water and other components of silicate. Asbestos is divided into two main categories. One is chrysotile (serpentine), accounting for the vast majority of the earth’s asbestos reserves, fiber length, soft, flexible, industrial application of great value; the other is amphibole asbestos, fiber rough, straight and Hard, because of its carcinogenic effect, has now been banned all over the world. Asbestos itself is not poisonous, its greatest danger comes from its fiber, which is a kind of meat