絮团尺寸对全尾砂絮凝沉降效果的影响研究  

Study on influence of floc size on flocculation and sedimentation effect of full tailings

作　　者：何明渝 王光进[2,3] 蓝蓉 李耀基[5] 李全明[6] 宋宁思 刘明生 敬小非[7] 巫尚蔚[7] HE Mingyu;WANG Guangjin;LAN Rong;LI Yaoji;LI Quanming;SONG Ningsi;LIU Mingsheng;JING Xiaofei;WU Shangwei(School of Public Safety and Emergency Management,Kunming University of Science and Technology,Kunming Yunnan 650093,China;School of Land and Resources Engineering,Kunming University of Science and Technology,Kunming Yunnan 650093,China;Yunnan International Technology Transfer Center for Mineral Resources Development and Solid Waste Resource Utilization,Kunming Yunnan 650093,China;Kunming Engineering&Research Institute of Nonferrous Metallurgy Co.,Ltd.,Kunming Yunnan 650051,China;Yunnan Phosphate Group Co.,Ltd.,Kunming Yunnan 650600,China;School of Civil Engineering,North China University of Technology,Beijing 100144,China;School of Safety Engineering,Chongqing University of Science and Technology,Chongqing 401331,China)

机构地区：[1]昆明理工大学公共安全与应急管理学院,云南昆明650093 [2]昆明理工大学国土资源工程学院,云南昆明650093 [3]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 [4]昆明有色冶金设计研究院股份公司,云南昆明650051 [5]云南磷化集团有限公司,云南昆明650600 [6]北方工业大学土木工程学院,北京100144 [7]重庆科技学院安全工程学院,重庆401331

出　　处：《中国安全生产科学技术》2022年第10期116-122,共7页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(52174114);昆明理工大学分析测试基金项目(2021M20202239019)。

摘　　要：为研究絮团尺寸对全尾砂絮凝沉降效果的影响,采用正交实验和图像颗粒分析相结合的方法,进行多因素耦合条件下全尾砂絮凝沉降实验,基于Giddings函数的沉降速度模型,提出全尾砂絮团图像颗粒分析,探究各时段絮团尺寸的变化规律。研究结果表明:当尾砂浆浓度为15%、絮凝剂溶液浓度为0.25%、絮凝剂单耗为20 g/t,pH值为10时,絮凝沉降效果最佳,最大沉降速度达13.12 mm/s;随着沉降时间的增加,沉降速度随絮团直径、长径比减小而减小,随圆形度增大而减小。研究结果可为实际生产中控制全尾砂絮凝沉降参数、提高沉降速率提供参考。In order to study the influence of floc size on the flocculation and sedimentation effect of full tailings,the experiments on the flocculation and sedimentation of full tailings under the condition of multi-factor coupling were carried out by using the combined method of orthogonal test and image particle analysis.Based on the sedimentation rate model of Giddings function,the image particle analysis of full tailings floc was put forward to explore the variation law of floc size in each period.The results showed that when the concentration of tailings mortar was 15%,the concentration of flocculant solution was 0.25%,the unit consumption of flocculant was 20 g/t,and the pH value was 10,the flocculation and sedimentation effect was the best,and the maximum sedimentation rate reached 13.12 mm/s.With the increase of sedimentation time,the sedimentation rate decreased with the decrease of floc diameter and length-diameter ratio,and decreased with the increase of circularity.The research results can provide reference for controlling the flocculation sedimentation parameters of full tailings and increasing the sedimentation rate in actual production.

关 键 词：全尾砂 沉降速度 絮团尺寸 图像颗粒分析仪 

分 类 号：X936[环境科学与工程—安全科学]