Coal preparation by high-gradient magnetic separation

Conference · Wed Feb 01 04:00:00 EST 1984 · Prepr., Soc. Min. Eng. AIME; (United States)

OSTI ID:6281917

Cox, J N; Keyser, R L; Tonty, L V

The Tennessee Valley Authority (TVA) in conjunction with the Department of Energy (DOE) has tested High-Gradient Magnetic Separation (HGMS) extensively since 1979. As the latest phase of this test work, a 1 Mg/hr pilot plant has been constructed at TVA's Paradise Coal Preparation Plant (PCPP). Objectives in operating the facility are: to determine how well HGMS can reduce ash and sulfur in coal while still maintaining an acceptable heating value recovery; and to compare HGMS to froth flotation, which is the method used at the PCCF to clean fine coal. Smaller ones, so the presence of agglomerated particle groups could cause some loss of efficiency. In addition, if the attraction between nonmagnetic and magnetic particles is stronger than the attraction between the magnetic particle and the magnetized screen, the magnetic particle will tend to be washed through the carousel into the product. Agglomerating chemicals from the thickeners could be present in plant slurry or clarified water. Previous HGMS samples run on DOE's batch unit had been dried and then diluted with tap water, so agglomerating chemicals might have been lost or been present in insufficient quantity to affect the separations. Preparations are being made to send samples of representative plant slurry and clarified water to the Pittsburgh facility. These samples will be tested and results compared with those recorded earlier. In addition, a dispersant will be added during some of these batch tests to see if removals can be improved.

• Research Organization: Tennessee Valley Authority, Office of Power, Division of Energy Demonstrations and Technology
• OSTI ID: 6281917
• Report Number(s): CONF-840218-
• Conference Information: Journal Name: Prepr., Soc. Min. Eng. AIME; (United States) Journal Volume: 84-161
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
AGGLOMERATION
CARBONACEOUS MATERIALS
COAL
COAL PREPARATION
COAL PREPARATION PLANTS
COMPARATIVE EVALUATIONS
CONCENTRATORS
ENERGY SOURCES
FOSSIL FUELS
FUELS
FUNCTIONAL MODELS
INDUSTRIAL PLANTS
MAGNETIC SEPARATORS
MATERIALS
NATIONAL ORGANIZATIONS
PERFORMANCE TESTING
PILOT PLANTS
SEPARATION PROCESSES
TENNESSEE VALLEY AUTHORITY
TESTING
US DOE
US ORGANIZATIONS