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Title: Coal preparation using magnetic separation. Volume 4. Evaluation of magnetic fluids for coal benefication. Final report. [Magnetic fluids are defined as dispersant-stabilized suspensions of ferromagnetic or ferrimagnetic particles in a carrier fluid]

Abstract

Research objectives were to acquire a body of information on the properties and potential applications of magnetic fluids, to study the selective coating behavior of magnetic fluids when contacted with a mixture of organic an inorganic matter, and to determine the extent of coal beneficiation that can be acccomplished with fluid-enhanced magnetic separation. Objectives were achieved by performing an extensive literature survey and by acquiring and testing samples of three fluids and several commercially-important domestic coals. Coal beneficiation tests were conducted in a high intensity induced-roll dry magnetic separator and in a high-gradient matrix-type wet magnetic separator. The induced-roll device could not beneficiate untreated coal, but high yields of magnetic clean coal were obtained when the feed was first pretreated with magnetic fluid. The high-gradient separator did achieve substantial coal beneficiation of untreated coal, and level of coal cleaning increased moderately when the feed was pretreated with magnetic fluids. However, yield of the nonmagnetic clean coal decreased. All magnetic fluids tested exhibited the ability to wet both organic and inorganic surfaces but showed a preference for organic surfaces. Testing of a high-ash preparation-plant refuse indicated that the organic fluid was capable of selective attachment to the organic components of amore » complex feed mixture.« less

Authors:
;
Publication Date:
Research Org.:
Colorado School of Mines, Golden (USA). Research Inst.
OSTI Identifier:
5119019
Report Number(s):
EPRI-CS-1517(Vol.4)
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL PREPARATION; MAGNETIC SEPARATORS; EVALUATION; MAGNETIC MATERIALS; SUSPENSIONS; COMMINUTION; CONCENTRATORS; DISPERSIONS; MATERIALS; 013000* - Coal, Lignite, & Peat- Transport, Handling, & Storage

Citation Formats

Sladek, T. A., and Cox, C. H. Coal preparation using magnetic separation. Volume 4. Evaluation of magnetic fluids for coal benefication. Final report. [Magnetic fluids are defined as dispersant-stabilized suspensions of ferromagnetic or ferrimagnetic particles in a carrier fluid]. United States: N. p., 1980. Web. doi:10.2172/5119019.
Sladek, T. A., & Cox, C. H. Coal preparation using magnetic separation. Volume 4. Evaluation of magnetic fluids for coal benefication. Final report. [Magnetic fluids are defined as dispersant-stabilized suspensions of ferromagnetic or ferrimagnetic particles in a carrier fluid]. United States. https://doi.org/10.2172/5119019
Sladek, T. A., and Cox, C. H. 1980. "Coal preparation using magnetic separation. Volume 4. Evaluation of magnetic fluids for coal benefication. Final report. [Magnetic fluids are defined as dispersant-stabilized suspensions of ferromagnetic or ferrimagnetic particles in a carrier fluid]". United States. https://doi.org/10.2172/5119019. https://www.osti.gov/servlets/purl/5119019.
@article{osti_5119019,
title = {Coal preparation using magnetic separation. Volume 4. Evaluation of magnetic fluids for coal benefication. Final report. [Magnetic fluids are defined as dispersant-stabilized suspensions of ferromagnetic or ferrimagnetic particles in a carrier fluid]},
author = {Sladek, T. A. and Cox, C. H.},
abstractNote = {Research objectives were to acquire a body of information on the properties and potential applications of magnetic fluids, to study the selective coating behavior of magnetic fluids when contacted with a mixture of organic an inorganic matter, and to determine the extent of coal beneficiation that can be acccomplished with fluid-enhanced magnetic separation. Objectives were achieved by performing an extensive literature survey and by acquiring and testing samples of three fluids and several commercially-important domestic coals. Coal beneficiation tests were conducted in a high intensity induced-roll dry magnetic separator and in a high-gradient matrix-type wet magnetic separator. The induced-roll device could not beneficiate untreated coal, but high yields of magnetic clean coal were obtained when the feed was first pretreated with magnetic fluid. The high-gradient separator did achieve substantial coal beneficiation of untreated coal, and level of coal cleaning increased moderately when the feed was pretreated with magnetic fluids. However, yield of the nonmagnetic clean coal decreased. All magnetic fluids tested exhibited the ability to wet both organic and inorganic surfaces but showed a preference for organic surfaces. Testing of a high-ash preparation-plant refuse indicated that the organic fluid was capable of selective attachment to the organic components of a complex feed mixture.},
doi = {10.2172/5119019},
url = {https://www.osti.gov/biblio/5119019}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 01 00:00:00 EDT 1980},
month = {Tue Jul 01 00:00:00 EDT 1980}
}