NDLI: Magnetic separation of solids from liquified coal

Content Provider	IEEE Xplore Digital Library
Author	Maxwell, E. Kelland, D. Akoto, I.
Copyright Year	1965
Abstract	High gradient magnetic separation (HGMS) has been applied to the removal of ash-forming mineral matter and sulfur in the form of pyrites from solvent refined coal. These materials occur as suspended solids which are very finely divided in the product of a liquifaction pilot plant. The pyrites contain part of the total sulfur found in the coal. The rest is bound organically in the coal structure. Actual pilot plant process conditions are simulated in a continuous-flow high-pressure system which feeds the liquified coal at 500°F to a ferromagnetic matrix centered in the bore of a Bitter solenoid. Field values of up to 100 kOe have been used although lower fields would be dictated if conventional magnets are to be used commercially. Results indicate that the removal of ash and inorganic sulfur increase with magnetic field and decrease with flow rate. Typical results are shown in Fig. 1 where the percentage reduction in sulfur in the filtrate is plotted against H/v. H is the applied magnetic field in kOe and v is the flow velocity in cm/ min. This parameter is derived from the ratio of magnetic force to the viscous drag force of the carrier fluid. Data for use in pilot plant design have been collected.
Sponsorship	IEEE Magnetics Society
Starting Page	907
Ending Page	907
Page Count	1
File Size	67806
File Format	PDF
ISSN	00189464
Volume Number	12
Issue Number	6
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1976-11-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic separation Solids Magnetic fields Minerals Solvents Magnetic materials Magnetic levitation Feeds Boring Solenoids
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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