Numerical Simulation of the Impeller Angle in Wemco Flotation Cell
Received:November 12, 2017  Revised:November 12, 2017
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KeyWord:self-aspirated flotation machine; impeller; flow field; Turbulent kinetic energy; numerical simulation
              
AuthorInstitution
Zhou Yuanbin 江西理工大学资源与环境工程学院
Kuang Jingzhong 江西理工大学资源与环境工程学院
Fang Xihui 江西理工大学资源与环境工程学院
Luo Dafang 江西理工大学资源与环境工程学院
Liu Pengfei 江西理工大学资源与环境工程学院
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Abstract:
      The flow field of forward impeller( -22.5o, -37.5°), radial impeller(0°) and backward impeller(22.5°, 37.5°) in Wemco flotation cell is simulated by CFD. The distribution characteristics, including velocity, turbulent kinetic energy and pressure of different impeller angle were discussed The relationship of circulation volume and power consumption at different rotational speeds is analyzed. The results show that the impeller angle has little affected the flow pattern. But it significantly affects the axial velocity, turbulent kinetic energy and differential pressure on the rotaing area. The axial velocity, turbulent kinetic energy and differential pressure of the 0° impeller angle are the lagest in the impeller area. Both the circulation volume and power consumption increase with the rotation speed rises. The circulation volume and power consumption of radial impeller is greater than forward and backward impeller flotation cell.
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