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某重晶石粉厂于９２年底投产，所用的设备是河北省宣化矿山机械厂生产的４Ｒ３２１６型摆式磨粉机，此套设备为密闭式，因设备的密闭性差，在生产过程中粉尘四处逸散，严重污染了周围环境，由于此种粉尘经加工后细微粉多易漂浮，其主要成份为ＳｉＯ２、Ａｌ２Ｏ３、ＣａＯ２等
A barite powder plant put into operation at the end of 92, the equipment used is Hebei Province Xuanhua Mining Machinery Factory 4R3216-type pendulum mill, this set of equipment is closed, due to poor sealing equipment, dust in the production process around the Plaza Scattered, seriously polluted the surrounding environment, due to the processing of fine powder and more easy to float, the main ingredients of SiO2, Al2O3, CaO2, etc.