摘要
全尾砂充填料是一种特高浓度的浆体,以管道输送,则形成比栓半径很大的栓塞流,管道的压能主要是克服管壁处浆体的剪切力。采用在管壁处高剪切区,注入少许水,形成液环输送,使浆体的栓塞沿管壁滑移,以低粘液体的剪切变形代替高粘浆体的剪切变形,达到减阻目的。论文既从理论上分析了充水减阻的极值、亦通过初步实验验证了同流量减阻可达20%以上。本实验研究对全尾砂充填法的推广具有重要意义。
The slurry of tailing sand produced by mine of nonferrous metals is hyperconcentration, gravimetric density generally over 75%. If it is transported by pipeline, the embolus fluid with large radius is formed. The press energy is mainly used to overcome the shear stress of slurry near the conduit wall, so the larger the viscosity of slurry, the higher the energy dispersion is.In the experiment a little water was poured into the area near conduit wall with high shear stress to form the transport with water ri...
出处
《有色金属》
CSCD
1990年第3期5-10,共6页
Nonferrous Metals
