High Gradient Magnetic Separation
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High Gradient Magnetic Separation
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Author : Richard Gerber
language : en
Publisher: John Wiley & Sons
Release Date : 1983
High Gradient Magnetic Separation written by Richard Gerber and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Science categories.
Magnetic Separation
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Author : H. Pfister
language : en
Publisher:
Release Date : 1979
Magnetic Separation written by H. Pfister and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with categories.
High Gradient Magnetic Separation Mechanism For Separation Of Chalcopyrite From Molybdenite
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Author : Pulin Dai
language : en
Publisher: OAE Publishing Inc.
Release Date : 2023-10-23
High Gradient Magnetic Separation Mechanism For Separation Of Chalcopyrite From Molybdenite written by Pulin Dai and has been published by OAE Publishing Inc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-10-23 with Science categories.
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.
Development Of High Gradient And Open Gradient Magnetic Separation
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Author :
language : en
Publisher:
Release Date : 1981
Development Of High Gradient And Open Gradient Magnetic Separation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
This paper was prepared: to review the accomplishments in both high-gradient magnetic separation (HGMS) and open-gradient magnetic separation (OGMS) by the Oak Ridge National Laboratory (ORNL) group during the past three years; to show, through the medium of motion pictures, the operation of the various separation methods and devices used and developed; to show qualitative results of the separation performed; and to make available, to those interested, detailed reports of the experimental procedures and the resulting data. The qualitative separation of pyritic sulfur and ash forming minerals from fine coal by high gradient magnetic separation has been demonstrated at feed rates up to one ton per hour, and in a machine that is commercially produced in sizes for feed rates up to several hundred tons per hour. The quantitative separation of pyritic sulfur and ash forming minerals from fine coal by free fall open gradient magnetic separation has been demonstrated at a laboratory scale and at 300 kg per hour in a solenoidal magnet configuration. A magnet modeling analysis has shown that an optimum magnet can be designed with practical physical constraints which can generate separating forces two to three times those of the existing solenoidal configuration and with a large processing capacity. The analytical predictions of the behavior of particles traversing these separating forces have been experimentally confirmed within 15% in existing magnets.
High Gradient Magnetic Separation
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Author :
language : en
Publisher:
Release Date : 1973
High Gradient Magnetic Separation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1973 with categories.
Studies Of High Gradient And Open Gradient Magnetic Separation
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Author : Matti Kokkala
language : en
Publisher:
Release Date : 1982
Studies Of High Gradient And Open Gradient Magnetic Separation written by Matti Kokkala and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with categories.
Mineral Processing At A Crossroads
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Author : B.A. Wills
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Mineral Processing At A Crossroads written by B.A. Wills and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Technology & Engineering categories.
Due to the increasingly complex mineralogy, and lower grade of many current ore reserves, technology has, over the past decade, had to evolve rapidly to treat these materials economically in an industry which has undergone severe periods of recession. However, most of the technical innovations, such as the increasing use of solvent-extraction, ion-exchange etc., have been in the field of chemical ore processing, and, apart from the use of computers and ever larger unit process machines, there have been few major evolutionary changes in the field of physical mineral processing, where conventional crushing and grinding methods, essentially unchanged in half a century, are followed by the 'old-faithfuls'- flotation, gravity, magnetic and electrostatic methods of separation. Many of these techniques have major limitations in the treatment of 'new' ores such as complex sulphides, and the main purpose of the NATO Advanced study Institute (ASI) "Mineral Processing at a Crossroads" was to review the future of mineral processing. One of the great failings of physical methods is their inability to treat ultra-fine particles, and much research effort is required in this area. Flotation is still the most widely used and researched method for separating minerals, and is the only method which can be used to produce separate concentrates from complex sulphide ores. However, its performance on these 'modern' ores is poor, and it is in this area particularly that chemical methods will increasingly be integrated into plant circuits.
Applications Of An Improvements In High Gradient Magnetic Separation
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Author :
language : en
Publisher:
Release Date :
Applications Of An Improvements In High Gradient Magnetic Separation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Hgms High Gradient Magnetic Separation A New Principle
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Author : H. H. Kolm
language : en
Publisher:
Release Date : 1981
Hgms High Gradient Magnetic Separation A New Principle written by H. H. Kolm and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1981 with categories.
High Gradient Magnetic Separation Applied To Environmental Remediation
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Author :
language : en
Publisher:
Release Date : 1993
High Gradient Magnetic Separation Applied To Environmental Remediation written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with categories.
High Gradient Magnetic Separation (HGMS) is an application of superconducting magnet technology to the separation of magnetic solids from other solids, liquids, or gases. The production of both high magnetic fields (>4 T) and large field gradients using superconducting magnet technology has made it possible to separate a previously unreachable but large family of paramagnetic materials. This is a powerful technique that can be used to separate widely dispersed contaminants from a host material and may be the only technique available for separating material in the colloidal state. Because it is a physical separation process, no additional waste is generated. We are applying this technology to the treatment of radioactive wastes for environmental remediation. We have conducted tests examining slurries containing nonradioactive, magnetic surrogates. Results from these studies were used to verify our analytical model of the separation process. The model describes the rate process for magnetic separation and is based on a force balance on the paramagnetic species. This model was used to support bench scale experiments and prototype separator design.