在选煤厂实现煤泥水闭路循环后,由于矿物盐类、浮选药剂、凝聚剂和细微粘土颗粒的增加,煤泥水的液相和固相组成均有显著变化。例如,卡拉干达煤田的萨朗斯克选煤厂实现了闭路循环后,循环水中的矿物盐类含量由1300毫克/升增加到2400毫克/升;非极性和极性药剂的残余 After the closed circulation of slime water is achieved at the coal preparation plant, the liquid and solid phase compositions of slime water change significantly due to the increase of mineral salts, flotation reagents, coagulants and fine clay particles. For example, after the closed cycle was achieved at the Sarangkang Coal Preparation Plant in Karaganda Coalfield, the mineral salts content in circulating water increased from 1,300 mg / L to 2,400 mg / L; residues of nonpolar and polar agents