随着建筑材料的大量需求,采石行业得到了迅速发展。特别是农村经济体制改革之后,乡、镇及个体的小型采石场不断涌现。他们为振兴经济,起到了积极的作用,但采石过程中的粉尘危害切不能忽视。据调查,一般小型采石场工艺落后,机械设备简陋,多为露天开采。其工艺流程为:打眼→爆破→运料→破碎→筛分→接料 With the huge demand for building materials, quarry industry has been rapid development. Especially after the reform of the rural economic system, the small quarries of townships, towns and individuals continue to emerge. They have played a positive role in rejuvenating the economy, but the damage caused by the dust during quarrying can not be ignored. According to the survey, the general process of small quarries lag behind, crude machinery and equipment, mostly open pit mining. The process is: 打眼 → blasting → hauling → crushing → screening → materials