The Experts below are selected from a list of 17469 Experts worldwide ranked by ideXlab platform
E. Godočíková - One of the best experts on this subject based on the ideXlab platform.
-
Mechanochemistry in Hydrometallurgy of sulphide minerals
Hydrometallurgy, 2005Co-Authors: Peter Baláž, A. Aláčová, Marcela Achimovičová, Jana Ficeriová, E. GodočíkováAbstract:Abstract The paper handles with the impact of mechanochemistry on Hydrometallurgy of sulphide minerals. Mechanochemistry is a branch of solid-state chemistry dealing with the processes which take place within solids as a result of the application of mechanical energy. The application of mechanochemistry to Hydrometallurgy is illustrated with short theoretical background and selected examples involving selective leaching of Zn from sphalerite ZnS, Zn sorption on pyrrhotite Fe1−XS, acid leaching of ZnS nanoparticles and selective Bi leaching from PbS concentrate. It is demonstrated that mechanochemical treatment of the sulphides leads to increased reaction rate, improved leaching selectivity and sorption efficiency and shows the enhanced leachability of nanocrystals.
Weihua Gui - One of the best experts on this subject based on the ideXlab platform.
-
A two-layer optimization and control strategy for zinc Hydrometallurgy process based on RBF neural network soft-sensor
2019 1st International Conference on Industrial Artificial Intelligence (IAI), 2019Co-Authors: Shiwen Xie, Yongfang Xie, Zhaohui Jiang, Weihua GuiAbstract:Zinc Hydrometallurgy technique is an important method to produce zinc metal. The control of the zinc Hydrometallurgy process is related to the quality of the zinc product. Due to the presence of the unmodeled dynamics, low- frequency disturbances, and high-frequency disturbances, it is a challenge to maintain the production indices within the desired ranges while minimizing the process cost. In this study, a two-layer optimization and control strategy is proposed for the zinc Hydrometallurgy process. In the upper layer, an optimal setting module is established to determine the set-points of production indices. A radial basis function (RBF) neural network is constructed to estimate the production indices on-line. An optimal control scheme with fuzzy-logic-based compensator is developed in the lower layer. The proposed strategy is applied to the iron removal process of zinc Hydrometallurgy process. Experiments show the effectiveness of our proposed strategy.
-
kinetic modeling and parameter estimation for competing reactions in copper removal process from zinc sulfate solution
Industrial & Engineering Chemistry Research, 2013Co-Authors: Bin Zhang, Chunhua Yang, Hongqiu Zhu, Weihua GuiAbstract:In zinc Hydrometallurgy, an advanced copper removal process purifies zinc sulfate solution through a series of chemical reactions with recycled underflow by using zinc powder in zinc hydrometallurg...
Peter Baláž - One of the best experts on this subject based on the ideXlab platform.
-
Mechanochemistry in Hydrometallurgy of sulphide minerals
Hydrometallurgy, 2005Co-Authors: Peter Baláž, A. Aláčová, Marcela Achimovičová, Jana Ficeriová, E. GodočíkováAbstract:Abstract The paper handles with the impact of mechanochemistry on Hydrometallurgy of sulphide minerals. Mechanochemistry is a branch of solid-state chemistry dealing with the processes which take place within solids as a result of the application of mechanical energy. The application of mechanochemistry to Hydrometallurgy is illustrated with short theoretical background and selected examples involving selective leaching of Zn from sphalerite ZnS, Zn sorption on pyrrhotite Fe1−XS, acid leaching of ZnS nanoparticles and selective Bi leaching from PbS concentrate. It is demonstrated that mechanochemical treatment of the sulphides leads to increased reaction rate, improved leaching selectivity and sorption efficiency and shows the enhanced leachability of nanocrystals.
-
Mechanical activation in Hydrometallurgy
International Journal of Mineral Processing, 2003Co-Authors: Peter BalážAbstract:Abstract The review paper deals with the results of the utilization of mechanical activation in Hydrometallurgy. The definition of mechanochemistry is given as well as physicochemical changes in mechanically activated minerals are described. The enhancement of the leaching processes in Hydrometallurgy is illustrated. The chemical and bacterial leaching of sulphide minerals are given as examples. A brief description of the established technologies (LURGI-MITTERBERG, ACTIVOX™, MELT) applying mechanical activation for metals extraction is given. In these processes, the introduction of mechanical activation step into technological cycle significantly modifies the subsequent processing steps.
D. S. Flett - One of the best experts on this subject based on the ideXlab platform.
-
Chloride Hydrometallurgy for complex sulphides: A review
Cim Bulletin, 2002Co-Authors: D. S. FlettAbstract:The current state-of-the-art of chloride Hydrometallurgy for treatment of complex sulphide bulk concentrates is reviewed. General considerations regarding the various flowsheet steps are examined and options discussed. Then, individual flowsheets are presented and discussed. Finally, the forward prospects for chloride Hydrometallurgy for treatment of complex sulphide bulk concentrates is considered and conclusions drawn concerning the likely application of this technology in the future.
-
Hydrometallurgy—an environmentally sustainable technology?
Hydrometallurgy ’94, 1994Co-Authors: M. T. Anthony, D. S. FlettAbstract:Hydrometallurgy has long been hailed as the environmentally friendly alternative to pyrometallurgy. There are, however, flaws in this argument, not least the difficulties, when Hydrometallurgy is employed, of avoiding water pollution and the need to discharge solids which may be far from inert. A good example of this situation is that of jarosite, the main waste solid from the roast/leach/electrowin process commonly used for zinc recovery.
A. N. Zagorodnyaya - One of the best experts on this subject based on the ideXlab platform.
-
Hydrometallurgy in rare metal production technology in Kazakhstan
Hydrometallurgy, 2002Co-Authors: Z. S. Abisheva, A. N. ZagorodnyayaAbstract:This paper is an overview of the application of Hydrometallurgy in the processing of minerals in Kazakhstan. Hydrometallurgical processes are generally used for the recovery of rare metals.
