尾矿颗粒沉降和分选规律研究  

SETTLEMENT AND SEPARATION OF TAILINGS PARTICLES

作　　者：侯永莉 郝喆 HOU Yongli;HAO Zhe(Nonferrous Geological Exploration and Research Institute,Shenyang 110013,China;College of Environmental Sciences,Liaoning University,Shenyang 110036,China)

机构地区：[1]辽宁有色勘察研究院,沈阳110013 [2]辽宁大学环境学院,沈阳110036

出　　处：《力学与实践》2021年第4期581-587,共7页Mechanics in Engineering

基　　金：辽宁省自然科学基金(20180550192);辽宁省科技计划(2019JH8/10300107,2020JH2/10300100);辽宁省百千万人才项目(辽百千万立项[2015]33号)资助。

摘　　要：开展了尾矿颗粒在流体中沉降和分选规律研究。首先,对尾矿颗粒在流体中受力特征和各种力作用效果进行分析;其次,对牛顿流体中尾矿颗粒沉降和分选进行研究;再次,对宾汉浆液中尾矿颗粒沉降和分选进行研究;最后,对理论公式进行了讨论和结果验证。论文确定了尾矿颗粒在不同流体中的沉降特点,提出在浆体流动中不沉的最大粒径,推导出球形颗粒的沉降微分方程,推导出颗粒最终沉速和沉降距离,求得了颗粒水平运移距离,结果讨论验证了理论公式的正确性。The settling and the separation of the tailings particles in fluid are studied. Firstly, the mechanical characteristics and the various force effects of the tailings particles in the fluid are analyzed. Secondly, the settling and the separation of the tailings particles in the Newtonian fluid are studied. Thirdly, the settling and separation of the tailings particles in the Bingham slurry are studied. Finally, the theoretical formula is derived and verified. The settling characteristics of the tailings particles in different fluids are determined, as well as the maximum size of the unsettled particles in the slurry flow, and the settling differential equation of spherical particles is deduced, as well as the formulas for the final settling velocity and the settling distance of particles,as well as the horizontal migration distance of particles. The theoretical formulas are verified.

关 键 词：尾矿颗粒 沉降 分选 牛顿流体 宾汉流体 

分 类 号：TD926.4[矿业工程—选矿]