sulfide mineral is depressed by excessive oxidation. Former researchers indicate that sodium sulfide (Na 2 S) would improve the flotability of many minerals. This process called as "sulfidization process" is used mostly in the flotation of oxidized sulfide mineral and oxide mineral. Sodium sulfide has been used to improve the flotability of ...
Critical Surface Tension of Sulfide Minerals황화광물의 임계표면장력. The Zisman plot was prepared based on the contact angles of sulfide minerals determined using the sessile drop method. The estimated critical surface tension of wetting (ϓ cw) was slightly smaller than that of floating (ϓ cf ), estimated based on natural floatability.
In this work, we applied the technology of magnetic treatment to the flotation of chalcopyrite. The mechanism of the effect of pre-magnetized butyl xanthate on chalcopyrite flotation was studied using monomineral flotation tests, adsorption tests, conductivity tests, Fourier transform infrared spectroscopy (FTIR), etc. The monomineral flotation test results …
Electrochemistry of flotation Chapter 1 General Review of Electrochemistry of Flotation of Sulphide Minerals... From the point of view of electrochemistry of flotation, a depressant is, however, defined as a reagent by the addition of which the oxidation of the mineral surface occurs at lower potential than collector oxidation or formation of metal collector salt which may be also …
Chapter 1 General Review of Electrochemistry of Flotation of Sulphide Minerals1.1 Three Periods of Flotation of Sulphide Minerals1.2 Natural Floatability and Collectorless Flotation of Sulphide Minerals1.3 Role of Oxygen and Oxidation of Sulphide ...
Froth flotation is a widely used, inexpensive process for commercial separation of minerals from gangue and minerals from each other. Extensive research has demonstrated that electrochemistry governs the flotation of sulfide minerals. Flotation often is adversely affected by uncontrolled oxidation, which also is an electrochemical process.
Available in PDF, EPUB and Kindle. Book excerpt: "Electrochemistry of Flotation of Sulphide Minerals" systematically covers various electrochemical measurements, especially electrochemical corrosive methods, electrochemical equilibrium calculations, surface analysis, semiconductor energy band theory as well as molecular orbital theory.
"Electrochemistry of Flotation of Sulphide Minerals" systematically covers various electrochemical measurements, especially electrochemical corrosive methods, electrochemical equilibrium calculations, surface analysis, semiconductor energy band theory as …
The arsenic-signature copper minerals are added to the study, since many copper operations encounter arsenic as a penalty element in the saleable concentrate. It is shown that the addition of arsenic to the copper and iron sulphides alters the semiconductor and electrochemistry properties, and in turn, its flotation characteristics.
Electrochemistry of Flotation of Sulphide Minerals · · · · · · ( ) 、,,。
"Electrochemistry of Flotation of Sulphide Minerals" systematically covers various electrochemical measurements, especially electrochemical corrosive …
Cite this chapter as: Hu Y., Sun W., Wang D. (2009) Electrochemistry of Activation Flotation of Sulphide Minerals. In: Electrochemistry of Flotation of Sulphide Minerals.
Electrochemistry is a very important issue in flotation; I have done a number of projects where choosing the right pulp electrochemistry in flotation may improve your mineral flotation response. As said, controlling the ORP down-the-bank in a Cu/Mo flotation circuits will reduce the NaHS consumption significantly.
The efficiency of flotation and separation of sulphide minerals and consumption of reagents are thus controlled by the electrochemistry of the pulp. The potential controlled flotation technology has been developed and used in industry recently to obtain higher efficiency of flotation separation in many copper, lead, zinc sulphide mines in China.
Sulfide minerals are a major source of metals; however, certain sulfide minerals, such as pyrite and pyrrhotite, are less desirable. Froth flotation is a commonly used separation technique, which requires the use of several reagents to …
The example of electrochemical flotation separation of sulphide ores shows an industrial application. Prof. Yuehua Hu is a professor at the School of Minerals Processing & Bioengineering of Central South University and Vice Chairman of the Mineral Processing Committee of the China Nonferrous Metals Society. Dr.
The study of flotation electrochemistry has been ongoing for over half a century and there has been significant contradictions and inconsistencies in findings of many investigators.
The example of electrochemical flotation separation of sulphide ores shows an industrial application. Prof. Yuehua Hu is a professor at the School of Minerals Processing & Bioengineering of Central South University and Vice Chairman of the Mineral Processing Committee of the China Nonferrous Metals Society.
The electrochemistry of pyrite-sphalerite flotation system has been studied by cyc1ovoltammetry and pulp potential measurements. The voltammogram of pyrite showed an anodic reaction interpreted as the oxidation of sulphide to sulphur. No oxidation was indicated in the voltammogram of un activated sphalerite.
flotation selectivity and recovery in the processing of complex sulphide ores. It is an inherent part of surface chemical reactions that determine whether the surface fJ.1m formed on a sulphide mineral will act as a hydrophobic or hydrophilic one. …
Chapter 7 Corrosive Electrochemistry of Oxidation-Reduction of Sulphide Minerals Chapter 8 Mechano-Electrochemical Behavior of Flotation of Sulphide Minerals Chapter 9 Molecular Orbital and Energy Band Theory Approach of Electrochemical Flotation of Sulphide Minerals
Electrochemistry of Flotation of Sulphide Minerals systematically covers various electrochemical measurements, especially electrochemical corrosive methods, electrochemical equilibrium calculations, surface analysis, semiconductor energy band theory as …
Electrochemistry Of Flotation Of Sulphide Minerals "Electrochemistry of Flotation of Sulphide Minerals" systematically covers various electrochemical measurements, especially electrochemical corrosive methods, electrochemical equilibrium calculations, surface analysis, semiconductor energy band theory as well as molecular orbital theory.
Electrochemical studies of sulfide mineral flotation 609 100 90 80 70 60 5o 40 30 ~0 10 0 J I ~ I i --.a- Flotation --~"-- EX Consumption I I I I i am m i 0 10 20 :30 Oxidation Time, d Fig.3 Floatability of chalcocite in 0.05 M borate containing 5x10-5 M EX TABLE 3 Characterization of chaleocite in 2x10-s M EX solution.
of Sulfur(II) Species on Gold and Sulfide Minerals S, Woods, D. C, Constable, and I. C. Hamilton 113 Application of Electrochemical Concepts to Four Sulfide Flotation Separations H, W. Johnson 131 Modeling of Mineral Electrochemical Interaction and Their Effect on Hydrophobicity Selectivity M. Hodgson and G, E. Agar 150 Use of Electrochemistry ...