CAJ | 학술논문

以某铜尾矿为实验对象，每吨尾矿中分别添加阴离子聚丙烯酰胺0、10、25、40和55 g，进行浓密实验.在前期(1 h)尾矿浓密分数随着絮凝剂用量增加逐渐递增，由63.98%增加至68.20%；而后期(12 h)浓密分数则随絮凝剂用量的增加略有下降.结合实验结果，将每吨尾矿中絮凝剂添加量由少至多划分为低含量(0～10 g)、合适含量(10～25 g)、高含量(25～40 g)和超高含量(40～55 g)四个区间，提出了不同区间絮凝剂对尾矿浓密的影响机理，分别体现为部分吸附、吸附架桥、保护和包裹作用.
이모동미광위실험대상，매둔미광중분별첨가음리자취병희선알0、10、25、40화55 g，진행농밀실험.재전기(1 h)미광농밀분수수착서응제용량증가축점체증，유63.98%증가지68.20%；이후기(12 h)농밀분수칙수서응제용량적증가략유하강.결합실험결과，장매둔미광중서응제첨가량유소지다화분위저함량(0～10 g)、합괄함량(10～25 g)、고함량(25～40 g)화초고함량(40～55 g)사개구간，제출료불동구간서응제대미광농밀적영향궤리，분별체현위부분흡부、흡부가교、보호화포과작용.
Taking copper tailings as an experimental object, dynamic thickening experiments were conducted by adding 0, 10, 25, 40 and 55 g of anionic polyacrylamide (APAM) per tonne of the tailings, respectively. It was found that the thickening concentration of the tailings at the prophase (1 h) increased gradually from 63.98% to 68.20%with increasing flocculant dosage, but at the anaphase (12 h) the value fell slightly when the flocculant dosage increased. In combination with experimental results, the flocculant dosage was divided into four intervals from less to more, low concentration (0 to 10 g per tonne of the tailings), appropriate concentration (10 to 25 g per tonne of the tailings), high concentration (25 to 40 g per tonne of the tailings), and ultrahigh concentration (40 to 55 g per tonne of the tailings). The influence mechanisms of flocculant dosage on tailings thickening in the different intervals were put forward, which present partial adsorption, adsorption bridging, protection, and encapsulation roles, respectively.