协庄选煤厂是８０年代投产的选煤厂，其处理能力为年洗选精煤８０万ｔ。原选矿工艺单一，只有跳汰选，粒度在０．５ｍｍ以下煤泥被当作尾煤而处理，这样不仅浪费了国家的大量资源，而且尾煤价格偏低，严重影响了选煤厂的经济效益。因此，选煤厂经过认真调研，于１９９９年初上 Xiezhuang Coal Preparation Plant is put into operation in the 80s of the coal preparation plant, its processing capacity for the year washing 800,000 tons of clean coal. Only a single beneficiation process, only the jig selection, particle size below 0.5mm slime is treated as tailings, which not only wasted a lot of resources of the country, and tails coal prices are low, seriously affecting the economy of the coal preparation plant benefit. Therefore, the coal preparation plant after careful investigation, in early 1999