Continuous High Gradient Magnetic Separation Pilot Plant
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Continuous High Gradient Magnetic Separation Pilot Plant
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Author : Bo Arvidson
language : en
Publisher:
Release Date :
Continuous High Gradient Magnetic Separation Pilot Plant written by Bo Arvidson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
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 Calutron categories.
Treatment Of Combined Sewer Overflows By High Gradient Magnetic Separation
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Author : David M. Allen
language : en
Publisher:
Release Date : 1978
Treatment Of Combined Sewer Overflows By High Gradient Magnetic Separation written by David M. Allen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Calutron categories.
Treatment Of Combined Sewer Overflows By High Gradient Magnetic Separation
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Author : David M. Allen
language : en
Publisher:
Release Date : 1977
Treatment Of Combined Sewer Overflows By High Gradient Magnetic Separation written by David M. Allen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Calutron categories.
Wet High Intensity Magnetic Separation Laboratory Tests Conducted In 1978 And 1979
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Author : J. Levin
language : en
Publisher:
Release Date : 1980
Wet High Intensity Magnetic Separation Laboratory Tests Conducted In 1978 And 1979 written by J. Levin and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with categories.
Miscellaneous laboratory tests (most of them on cyanide residues) were undertaken to supplement on-site pilot-plant work on wet high-intensity magnetic separation (WHIMS). Initially, the main concern was with blockage of the matrix, and consideration was given to the use of a reverse-flushing system. The laboratory tests on this system were encouraging, but they were not of sufficiently long duration to be conclusive. When the continuous ball-discharge and washing system was developed at the National Institute for Metallurgy, the blockage problem lost its urgency, and the laboratory work was applied to an investigation of the performance of WHIMS machines. The laboratory tests were the 'standard' test (developed to provide a simple and highly reproducible test), a batch test with free-fall feed, a batch test with controlled feed (up-flow), and a continuous test using a Carpco laboratory separator. Each of these methods is suitable for a particular purpose. The Carpco separator gives low recoveries because of its shallow matrix, but the recovery to be expected in practice can be matched if the feed is passed twice through the separator. The velocity of the pulp through the matrix is important, because it determines the capacity of the separator and the recovery obtainable. Of almost equal importance is the magnetic load, which affects the velocity of the pulp and the recovery. Typically, a recovery of 51 per cent of the uranium was reduced to one of 40 per cent as the magnetic load was increased from 25 to 100 g/l, while the pulp velocity (calculated from the volumetric flow through the matrix and the cross-section of the matrix) decreased from 62 to 36 mm/s. There was some indication that, for the same pulp velocity, lower recoveries are obtained when free-fall feeding is used. Recoveries are reduced when the magnet field current is reduced; each particle size is affected equally, so that the size-recovery distribution curves for high and low field strengths have a similar shape. A reduction in recovery of 4 to 5 per cent was observed in a test simulating the effect of the air gaps in the magnetic circuit of a continuous separator. Some benefit was observed in the application of WHIMS to coarsely ground ore; from a Blyvooruitzicht rod-mill product, 25 per cent of the total uranium was recovered when only 29 per cent of the rod-mill product (the finest portion) was treated. A similar recovery was made from 43 per cent of the rod-mill product from Stilfontein; a second stage of treatment after regrinding raised the overall recovery of uranium to 76,4 per cent. Recoveries of 55 and 42 per cent of the uranium were obtained in tests on two flotation tailings from Free State Geduld. The application of WHIMS to the concentration of chromite in a sample from the UG-2 Reef did not yield an acceptable grade of magnetic product because of the similarity of the magnetic properties of the chromite and the pyroxenes. In a determination of the mass susceptibilities of the constituents in a typical concentrate obtained by WHIMS, it was found that some 20 per cent of the magnetic product had a susceptibility of less than 5,4 x 0,000001 emu but contained 38 per cent of the uranium recovered by WHIMS. A few tests were conducted on different types of matrix. Magnetic stainless-steel balls gave recoveries markedly lower than those obtainable with soft-iron balls; steel balls (said to contain 0,9 per cent carbon) gave recoveries of uranium slightly lower (about 8 per cent) than those obtainable with soft-iron balls. Other tests on various types of matrix were of a tentative nature and inconclusive. A matrix of spaced horizontal rods is recommended for possible future consideration.
Industrial Applications Of Magnetic Separation
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Author :
language : en
Publisher:
Release Date : 1979
Industrial Applications Of 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 1979 with Magnetic materials categories.
Superconducting Machines And Devices
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Author : S. Foner
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-06-29
Superconducting Machines And Devices written by S. Foner 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 2013-06-29 with Technology & Engineering categories.
This book presents detailed discussions of several of the large scale applications of superconductivity which will have major economic impact on technical developments in the industrial world. The world wide concern with energy problems makes this work particularly timely. Some of the large scale devices and systems such as superconducting generators, motors, power transmission, large magnets, high speed ground transportation and industrial processing clearly speak directly to improved efficiencies of generation and utilization of energy. The articles treat each subject in depth. The text is suitable for advanced undergradu ate or graduate engineering or applied science courses. The text should also be of immediate use to practicing engineers and scientists in applied superconductivity. The unique summaries of national efforts in applied superconductivity will also be valuable to industrial and government plan ners. The book is based on a NATO Advanced Study Institute entitled, "Large Scale Applications of Superconductivity and Magnetism" which was held September 5 to 14 in the Hotel des Alpes, Entreves, Valle d'Aosta, Northern Italy. This Study Institute represented a departure from other NA TO Advanced Study Institutes in that it was very strongly directed toward engineering applications rather than purely scientifically oriented interests. The planning of this Institute developed over several years and would not have been possible without continued interest by several key NATO Scientific Mfairs Division scientists. It started when one of us (S. F. ) met with Dr. H.
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.
Energy Research Abstracts
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Author :
language : en
Publisher:
Release Date : 1992-10
Energy Research Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1992-10 with Power resources categories.
Epa 600 2
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Author :
language : en
Publisher:
Release Date : 1978
Epa 600 2 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with Environmental engineering categories.