High Gradient Magnetic Separation Mechanism For Separation Of Chalcopyrite From Molybdenite
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| Author | : Pulin Dai |
| Publisher | : OAE Publishing Inc. |
| Total Pages | : 10 |
| Release | : 2023-10-23 |
| Genre | : Science |
| ISBN | : |
Removing molybdenite from chalcopyrite by flotation has long been a challenge due to their similar floatability as sulfide minerals. However, the difference in the magnetic susceptibility of the two minerals may be employed to address this challenge. Recently, pulsating high-gradient magnetic separation (PHGMS) has been reported effective as an environmentally friendly and economical strategy for separating chalcopyrite from molybdenite, but the mechanism of their magnetic difference is unclear. The current investigation employed crystal field theory and density functional theory calculations to theoretically elucidate the magnetic properties of these two minerals, and their difference was further demonstrated by experimental investigations. Under optimized conditions in a SLon-100 cyclic PHGMS separator, a chalcopyrite concentrate assaying 31.47% Cu and 0.44% Mo at 81.93% Cu and 5.56% Mo recoveries was produced from a pure chalcopyrite-molybdenite mixture that initially contained 26.29% Cu and 5.42% Mo. After the separation process, the Cu grade decreased to 15.06%, whereas the Mo grade increased to 16.22% in the nonmagnetic product. These findings have potential implications for the separation of chalcopyrite from molybdenite using PHGMS.
| Author | : |
| Publisher | : |
| Total Pages | : 724 |
| Release | : 1996 |
| Genre | : Metallurgy |
| ISBN | : |
| Author | : National Research Council |
| Publisher | : National Academies Press |
| Total Pages | : 102 |
| Release | : 2002-03-14 |
| Genre | : Science |
| ISBN | : 0309169836 |
The Office of Industrial Technologies (OIT) of the U. S. Department of Energy commissioned the National Research Council (NRC) to undertake a study on required technologies for the Mining Industries of the Future Program to complement information provided to the program by the National Mining Association. Subsequently, the National Institute for Occupational Safety and Health also became a sponsor of this study, and the Statement of Task was expanded to include health and safety. The overall objectives of this study are: (a) to review available information on the U.S. mining industry; (b) to identify critical research and development needs related to the exploration, mining, and processing of coal, minerals, and metals; and (c) to examine the federal contribution to research and development in mining processes.
| Author | : Maurice C. Fuerstenau |
| Publisher | : SME |
| Total Pages | : 592 |
| Release | : 2003 |
| Genre | : Science |
| ISBN | : 9780873351676 |
This comprehensive reference examines all aspects of mineral processing, from the handling of raw materials to separation strategies to the remediation of waste products. It incorporates state-of-the-art developments in the fields of engineering, chemistry, computer science, and environmental science.
| Author | : Robert Schoonheydt |
| Publisher | : Elsevier |
| Total Pages | : 428 |
| Release | : 2018-11-05 |
| Genre | : Science |
| ISBN | : 0081024339 |
Surface and Interface Chemistry of Clay Minerals, Volume 9, delivers a fundamental understanding of the surface and interface chemistry of clay minerals, thus serving as a valuable resource for researchers active in the fields of materials chemistry and sustainable chemistry. Clay minerals, with surfaces ranging from hydrophilic, to hydrophobic, are widely studied and used as adsorbents. Adsorption can occur at the edges and surfaces of clay mineral layers and particles, and in the interlayer region. This diversity in properties and the possibility to tune the surface properties of clay minerals to match the properties of adsorbed molecules is the basis for study. This book requires a fundamental understanding of the surface and interface chemistry of clay minerals, and of the interaction between adsorbate and adsorbent. It is an essential resource for clay scientists, geologists, chemists, physicists, material scientists, researchers, and students. - Presents scientists and engineers with a resource they can rely on for their own research and work involving clay minerals - Includes an in-depth look at ion exchange, adsorption of inorganic and organic molecules, including polymers and proteins, and catalysis occurring at the surfaces of clay minerals - Includes materials chemistry of clay minerals with chiral clay minerals, optical materials and functional films
| Author | : Jan Drzymała |
| Publisher | : |
| Total Pages | : 507 |
| Release | : 2007 |
| Genre | : |
| ISBN | : 9788374933629 |
| Author | : A.K. Suri |
| Publisher | : Routledge |
| Total Pages | : 272 |
| Release | : 2017-11-13 |
| Genre | : Science |
| ISBN | : 1351448978 |
The growth and development witnessed today in modern science, engineering, and technology owes a heavy debt to the rare, refractory, and reactive metals group, of which niobium is a member. Extractive Metallurgy of Niobium presents a vivid account of the metal through its comprehensive discussions of properties and applications, resources and resource processing, chemical processing and compound preparation, metal extraction, and refining and consolidation. Typical flow sheets adopted in some leading niobium-producing countries for the beneficiation of various niobium sources are presented, and various chemical processes for producing pure forms of niobium intermediates such as chloride, fluoride, and oxide are discussed. The book also explains how to liberate the metal from its intermediates and describes the physico-chemical principles involved. It is an excellent reference for chemical metallurgists, hydrometallurgists, extraction and process metallurgists, and minerals processors. It is also valuable to a wide variety of scientists, engineers, technologists, and students interested in the topic.
| Author | : Yuehua Hu |
| Publisher | : Springer Science & Business Media |
| Total Pages | : 317 |
| Release | : 2010-06-30 |
| Genre | : Science |
| ISBN | : 3540921796 |
"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. Behaviour and mechanism of collectorless and collector-induced flotation of sulphide minerals in various flotation systems are also discussed. 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. Wei Sun is an associate professor at the School of Minerals Processing & Bioengineering of Central South University. Prof. Dianzuo Wang is both a member of Chinese Academy of Sciences and Chinese Academy of Engineering, and a foreign associate of the National Academy of Engineering (USA).
| Author | : Srdjan M. Bulatovic |
| Publisher | : Elsevier |
| Total Pages | : 459 |
| Release | : 2007-02-19 |
| Genre | : Technology & Engineering |
| ISBN | : 0080471374 |
Handbook of Flotation Reagents: Chemistry, Theory and Practice is a condensed form of the fundamental knowledge of chemical reagents commonly used in flotation and is addressed to the researchers and plant metallurgists who employ these reagents. Consisting of three distinct parts: 1) provides detailed description of the chemistry used in mineral processing industry; 2) describes theoretical aspects of the action of flotation reagents3) provides information on the use of reagents in over 100 operating plants treating Cu, Cu/Zn, Cu/Pb, Zn, Pb/Zn/Ag, Cu/Ni and Ni ores.* Looks at the theoretical aspects of flotation reagents* Examines the practical aspects of using chemical reagents in operating plants* Provides guidelines for researchers and engineers involved in process design and development
| Author | : George Z. Kyzas |
| Publisher | : Elsevier |
| Total Pages | : 388 |
| Release | : 2018-11-30 |
| Genre | : Technology & Engineering |
| ISBN | : 0128141336 |
Composite Nanoadsorbents discusses the most recent advances in the field, including promising techniques for waste water decontamination and the advantages and drawbacks of nanoadsorbents in these applications. The implications of nanoadsorbents to public health and future developments for facilitating environmental sustainability are also discussed. New approaches for nanomaterials are analyzed, focusing on the effect of nanotechnology in adsorption applications. The effectiveness of nanosized materials is evaluated, along with cost factors and new synthesis routes of composite nanomaterials. Combining the areas of nanotechnology, adsorption, and composite surface chemistry, the synthesis, modifications and applications of nanotechnology in the adsorption process are demonstrated. Edited by a prolific expert in the field, this book will be a valuable resource for researchers, postgraduate students and professionals in the fields of nanotechnology, adsorption and materials synthesis. - Bridges the gap between theory and application of composite nanoadsorbents - Provides an understanding of the benefits of nanoadsorbents and their cost, efficiency and novelty - Includes material on inorganic nanoadsorbents and carbon nanotubes
