基于响应面分析法的不同粒径尾砂絮凝沉降效果研究  

Study on flocculation and sedimentation effect of tailings of different particle sizes based on response surface analysis method

作　　者：普张龙 王光进[1,2] 蔡彬婷 王孟来 PU Zhang-long;WANG Guang-jin;CAI Bin-ting;WANG Meng-lai(College of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,China;Yunnan International Technology Transfer Center for Mineral Resources Development and Solid Waste Resources Utilization,Kunming 650093,China;Yunnan Phosphating Chemical Group Co.Ltd.,Kunming 650600,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]云南省矿产资源开发与固废资源利用国际技术转移中心,云南昆明650093 [3]云南磷化集团有限公司,云南昆明650600

出　　处：《泥沙研究》2023年第4期53-60,共8页Journal of Sediment Research

基　　金：国家自然科学基金面上项目(52174114);国家磷资源开发利用工程技术研究中心开放基金项目(NECP2022-07)。

摘　　要：尾砂絮凝沉降技术是矿山充填工艺的核心环节,而尾砂浆溶液浓度、絮凝剂溶液浓度和絮凝剂单耗是影响尾砂絮凝沉降效果的关键因素。为研究不同粒径尾砂絮凝沉降效果的影响,采用Design-Expert软件进行了多因素耦合条件下不同粒径尾砂絮凝沉降试验,确定了多因素耦合条件下的最优絮凝条件,分析了絮团颗粒对尾砂沉降分层的影响,探究了絮凝前后不同粒径尾砂的固结压缩情况,建立了基于响应面分析的多元回归沉降模型。研究结果表明,絮凝剂不仅可以有效提高尾细砂和尾粉砂的沉降速度,还可以明显提高尾砂的固结速度和压缩程度,且絮凝后尾粉砂固结速度和体积压缩量均高于尾细砂。Tailing sand flocculation settlement technology is the core link of mine filling process.Here,solution concentrations of tailing mortar and flocculant and unit consumption of flocculant are the key factors affecting tailing sand flocculation settlement.To study the effect of flocculation and sedimentation of tailing sand with different particle sizes,flocculation and settlement tests are carried out by using the Design-Expert software,the optimal flocculation conditions under multi-factor coupling conditions are determined,the influence of flocs particles on the settlement stratification of tailings is analyzed,the consolidation and compression processes of tailings with differert particle sizes before and after flocculation are explored,and a multiple regression settlement model based on response surface analysis is established.The results show that flocculation can not only effectively improve the settling velocity of tailing fine sand and tailing silt,but also significantly enhance the consolidation rate and compression degree,and the consolidation rate and volume compression of tailing silt after flocculation are higher than those of tailing sand.

关 键 词：尾细砂 尾粉砂 响应面分析 絮凝沉降 固结压缩 

分 类 号：TV142.1[水利工程—水力学及河流动力学] TD926.4[矿业工程—选矿]