Modeling and Simulation of Goethite Process for Removal of Iron from Zinc Leaching Solution

A reactor model has been built to simulate the goethite process for iron removal. A three-factor designed set of boundary conditions was applied to determine the effect of stirring speed, gas inlet flow rate, and Fe 2+ concentration. The two-phase flow velocity field, gas volume fraction distributio...

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Bibliographic Details
Published in:JOM (1989) 2021-06, Vol.73 (6), p.1661-1672
Main Authors: Nan, Tianxiang, Yang, Jianguang, Zeng, Weizhi, Tang, Chaobo, Hu, Qingcheng
Format: Article
Language:English
Subjects:
Advances in Process Metallurgy
Boundary conditions
Chemistry/Food Science
Copper
Earth Sciences
Efficiency
Energy consumption
Engineering
Environment
Flow velocity
Goethite process
Inlet flow
Iron
Leaching
Mass transfer
Physics
Process controls
Reynolds number
Simulation
Stirrers
Stirring
Turbulence models
Two phase flow
Velocity distribution
Viscosity
Zinc
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Summary:A reactor model has been built to simulate the goethite process for iron removal. A three-factor designed set of boundary conditions was applied to determine the effect of stirring speed, gas inlet flow rate, and Fe 2+ concentration. The two-phase flow velocity field, gas volume fraction distribution, mass transfer rate, and Fe 2+ concentration were obtained as simulation results. The results showed that stirring has a significant effect on the distribution of the fluid field. The reaction rate and mass transfer were greatly influenced by the gas inlet flow rate. Based on the results, the following suggestions can be made for the goethite process for iron removal in this system: the number of stirrers should be increased, and the type and size of stirring paddle should be changed to enhance the fluidity of the solution; the rate of gas inlet flow should be increased to enhance the mass transfer and accelerate the iron removal reaction.
ISSN:1047-4838
1543-1851
DOI:10.1007/s11837-021-04593-2