赤泥选铁后尾矿管道输送试验研究  

Research on pipeline transportation of tailings after iron separation from red mud

作　　者：史英杰 罗振勇 倪阳 Shi Yingjie;Luo Zhenyong;Ni Yang(Guiyang Aluminum&Magnesium Design&Research Institute Co.,Ltd.,Guiyang 550081,China)

机构地区：[1]贵阳铝镁设计研究院有限公司,贵州贵阳550081

出　　处：《轻金属》2024年第9期6-10,共5页Light Metals

摘　　要：针对赤泥选铁后尾矿进行管道输送相关的一系列试验研究。进行了流变特性研究,结果表明此类浆体属于宾汉体模型,最佳输送浓度为35%;进行了敷设角度试验,此类浆体的最大敷设角度应不大于8.5°;进行了临界沉积速度计算,35%浓度时,浆体在内径203和255 mm两种管径的临界沉积速度分别为0.982和1.039 m/s;进行了内径203和255 mm的两种规格管道的环管试验,结果表明浆体摩阻在相同管径下,随浆体浓度的增大而增加,浆体摩阻在同种浓度下,管道内径越大,摩阻越小。A series of experimental research on pipeline transportation of tailings after iron separation from red mud were carried out.The rheological properties were studied,and the results showed that this kind of slurry belonged to Bingham model,and the optimal conveying concentration was 35%.The laying angle test was carried out,and the maximum laying angle of this kind of slurry should be no more than 8.5°;The critical deposition rate was calculated.When the concentration was 35%,the critical deposition rate of the slurry was 0.982 and 1.039 m/s at the inner diameter of 203 and 255 mm respectively.The loop pipe test of two kinds of pipes with internal diameters of 203 and 255 mm was carried out.The results showed that the slurry friction increased with the rise of slurry concentration under the same pipe diameter,and the slurry friction decreased with the rise of internal diameter under the same concentration.

关 键 词：赤泥选铁后尾矿 流变特性 环管试验 摩阻试验 

分 类 号：TF821[冶金工程—有色金属冶金]