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随着煤炭产量的增加,排出的矸石也越来越多。为消除矸石对环境的污染,少占良田,变废为宝,各地都在设法利用矸石。目前除了利用现有洗煤设备,从矸石中回收少量煤炭外,大都将煤矸石粉碎后制砖、作水泥骨料、发电或者提取化工产品。但煤矸石被粉碎时产生大量粉尘,使粉碎车间及其附近粉尘浓度很高,有的高达200毫克/米~3左右。如徐州新河煤矿矸砖厂粉尘车间内,工人就看不清三、四米远的东西,车间外的晒场上,工人晒砖坯夏季也要戴口罩。同时粉尘尘粒越小,在空气中悬浮的时间就越长,污
With the increase of coal output, discharged waste rock is also more and more. In order to eliminate the environmental pollution of waste rock, occupy less farmland and turn waste into treasure, and all localities are trying to use waste rock. In addition to the current use of existing coal washing equipment, recovered a small amount of coal from the waste, most of the coal gangue crushed brick, cement aggregate, power generation or extraction of chemical products. However, a large amount of dust is generated when the coal gangue is crushed, so that the concentration of dust in the crushing plant and its vicinity is high, and some as high as 200 mg / m ~ 3. Xuzhou Xinhe coal gangue brick factory dust workshop, the workers can not see three or four meters away from the outside of the workshop on the drying floor, the workers should also wear a mask sun brick summer. At the same time the smaller the dust particles, the longer the suspension in the air, dirty