Numerical simulation of solid-liquid two-phase flow of the gathering process of seafloor massive sulfide

被引：0
|
作者：
Li Y. [1 ,2 ]
He J. [1 ]
机构：
[1] College of Mechanical and Electrical Engineering, Central South University, Changsha
[2] State Key Laboratory of Deep Sea Mineral Resources Development and Utilization Technology, Changsha
来源：
Zhongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Central South University (Science and Technology) | 2022年 / 53卷 / 02期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
Mineral collecting; Seafloor massive sulfide; Solid-liquid two phase flow;
D O I：
10.11817/j.issn.1672-7207.2022.02.011
中图分类号：
学科分类号：
摘要：
A suction flow field model of seafloor massive sulfide agglomeration was established based on the working characteristics of the spiral drum. Fluent software was used to simulate the solid-liquid two-phase flow in the seafloor massive sulfide gathering process, and the effects of the initial mineral movement state, mineral particle size, suction pipe structure parameters, and suction water flow velocity on the suction performance were analyzed. The results show that when collecting seafloor massive sulfide, the initial movement speed of seafloor massive sulfide should be increased as much as possible; the larger the particle size of the mineral is, the more difficult it is to pump. In order to facilitate the collection of polymetallic sulfides, the particle size of minerals should be controlled in the range of 10-30 mm. The diameter of suction pipe is positively correlated with the suction completion rate. Considering the suction completion rate and concentration comprehensively, it is recommended that the inner diameter of suction pipe be 150 mm and the diversion hood be installed. The suction flow rate is positively correlated with the suction completion rate. The suction water is not the faster the better. Considering the suction efficiency and energy consumption comprehensively, it is suggested that the suction flow speed range be 7-8 m/s. © 2022, Central South University Press. All right reserved.
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页码：461 / 470
页数：9
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