某矿高浓度全尾砂料浆絮凝沉降特性试验研究

矿山拟采用全尾砂作为充填骨料，为了确定充填料的输送浓度、添加絮凝剂种类及添加量等参数，分别对料浆浓度为68 %、70 %、72 %添加不同添加量的明矾、十二烷基苯磺酸钠及聚丙烯酰胺3种絮凝剂进行沉降对比试验，然后对试验结果进行对比分析，综合澄清液液面下降高度及经济成本考虑，最后确定3种絮凝剂添加量沉降回归模型，经济高效的絮凝沉降参数:较佳的絮凝剂为明矾、明矾添加量为29 g/t及全尾砂料浆浓度为70 %. 

Experimental study on high solubility total tailings flocculation settlement properties in a mine

Flocculant settlement tests are performed by adding different amounts of flocculation agents, alum, sodium dodecylbenzenesulfonate and polyacrylamide into varied slurry concentrations, 68 %, 70 % and 72 %, respectively, to determine the transport solubility of filling material, type and adding flocculant amount. The results are compared and analyzed by taking the supernatant liquid drop height and economic cost into account. The settlement regression models for the three kinds of flocculant addition amounts are determined by working out the economic efficiency of flocculation and sedimentation parameters. The results show that the best flocculant is alum with additive amount of 29 g/t and the total tailings concentration is 70 %.