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3.2 .5按粉尘产生的来源可分为两类 :(1)原生粉尘。在开采之前因地质作用和地质变化等原因而生成的粉尘。(2 )次生粉尘。在采、装载、转运等生产过程中 ,因破碎矿岩产生的粉尘。3.2 .6按粉尘在空气中状态可分为两类 :(1)浮游粉尘。飘浮在空气中的粉尘。(2 )沉积粉尘。尘粒在其
3.2 .5 Sources of dust can be divided into two categories: (1) Primary dust. Dust generated due to geological and geological changes before mining. (2) secondary dust. In mining, loading, transport and other production processes, due to broken ore rock dust. 3.2.6 By dust in the air state can be divided into two categories: (1) floating dust. Dust floating in the air. (2) deposition of dust. Dust particles in it