【摘 要】
：
A mathematical model, accounting for the sulfuric acid and ferric iota diffusion and the copper sulfide mineral leaching process, was developed for an ore parti
【机 构】
：
School of Civil and Environmental Engineering,School of Mechanical Engineering
【基金项目】
：
国家自然科学基金;the program for New Century Excellent Talents in Chinese Universities;the Specialized Research Fund for the Doctoral Program of Higher Education;the China Postdoctoral Science Foundation
论文部分内容阅读
A mathematical model, accounting for the sulfuric acid and ferric iota diffusion and the copper sulfide mineral leaching process, was developed for an ore particle by considering its porous structure. It was simulated with the simulation tool COMSOL Multiphysics. The simulation results show that the highest acid and ferric concentrations near the particle surface are apparent, while the concentrations in the central particle increase slightly as the less-porous ore core with low permeability prevents the oxidation from penetrating. The extraction of the mineral near the particle surface is the maximum, mainly because of ample sulfuric acid, ferric ions, bacteria, and oxygen available for the leaching process. Because of low oxidation concentration in the central part of the particle, the reaction rate and copper sulphide conver-sion are small. The simulation shows good agreement with the experimental results.
其他文献
Ni-Co-Fe2O3 composite coatings were electrodeposited using cetyltrimethylammonium bromide(CTAB)-modified Watts nickel bath with Fe2O3 particles dispersed in it.
This paper presents the results of a study concerned with the surface hardening of Fe-based alloys and WC-8Co cemented carbide by integrating laser cladding and
The effect of different Nb additions on the mechanical properties and microstructure evolution of grain boundary allotriomorphic ferrite (FGBA)/granular bainite
In order to satisfy the demand of validity and real time operating performance of diesel engine model used in hardware-in-the-loop simulation system,a simplifie
Voltage profiles of feeders with the connection of distributed generations(DGs)were investigated.A unified typical load distribution model was established.Based
An improved circular synthetic aperture radar (CSAR) imaging algorithm of omega-k (ω-k) type mainly for reconstructing an image on a cylindrical surface is pro
In order to improve the video quality of transmission with data loss,a spatial and temporal error concealment method was proposed,which considered both the stat
The extraction of zinc from zinc sulfate solution was investigated,using 20% saponified D2EHPA as an extractant and260# sulfonate kerosene as a diluent.The solu
In order to analyze power system stability in environment of WAMS(wide area measurement system),a new steady state stability model with time-varying delay was p
In order to establish the baseline finite element model for structural health monitoring,a new method of model updating was proposed after analyzing the uncerta