摘要
深锥浓密机最小直径通常由其单位面积处理量确定,锥角一般取经验值为30°~60°,设计时,结合物料基本性质由经验进行取值,具有一定的主观盲目性。本文采用数值模拟方法对深锥浓密机直径和锥角进行优化。首先,通过对直径d=180 mm、高度h=2 m的大尺寸模型浓密实验机开展浓密实验,获取入料后不同时间点的底流浓度,然后,将实验结果与模拟仿真结果对比,结果显示均方根误差均小于0.5,验证了模拟仿真结果的准确性。最后,基于某矿山的实际情况,利用模拟仿真技术优化深锥浓密机的锥角和直径。结果表明,在深锥浓密机单位面积处理量为500 kg/(m^(2)·h)、全尾砂处理量40 t/h的条件下,浓密机锥角为30°、直径为11 m时,在相同时间内底流浓度最高,且达到最高浓度的时间也最短。模拟仿真较好地解决了深锥浓密机参数设计时的主观盲目性问题,可推广应用。
The minimum diameter of the deep cone thickener is determined by its unit area processing capacity.The cone angle is generally taken as the empirical value of 30°-60°.In the design,they are taken by experience according to the basic properties of the material,which has certain subjective blindness.In this paper,the diameter and cone angle of deep cone thickener were optimized by numerical simulation.Firstly,the underflow concentration at different time points after feeding was obtained by carrying out the thickening experiment on the large-scale model thickening experimental machine with diameter d=180 mm and height h=2 m.Then,the experimental results were compared with the simulation results.The results show that the root mean square error is less than 0.5,which verifies the accuracy of the simulation results.Finally,based on the actual situation of a mine,the cone angle and diameter of the deep cone thickener are optimized by simulation technology.The results show that under the condition that the unit area processing capacity of the deep cone thickener is 40 t/h,the cone angle of the thickener is 30°and the diameter is 11 m,the underflow concentration is the highest in the same time,and the time to reach the highest concentration is the shortest.The simulation solves the subjective blindness problem in the parameter design of deep cone thickener,which can be promoted and applied.
作者
程天冲
杨仕教
张仕豪
梁金成
CHENG Tianchong;YANG Shijiao;ZHANG Shihao;LIANG Jincheng(School of Resource Environment and Safety Engineering,University of South China,Hengyang 421001,China)
出处
《绿色矿冶》
2025年第3期77-83,共7页
Sustainable Mining and Metallurgy
关键词
全尾砂浓密
直径
锥角
数值仿真
沉降模拟
complete tailings thickening
diameter
cone angle
numerical simulation
deposition modeling
