Swedish discovery: Magnetite fines recovery

Journal Article · Sun Jul 01 04:00:00 EDT 1984 · Coal Age; (United States)

OSTI ID:6344240

Hervol, J D

Current magnetite recovery systems that retain 98% to 99% are still not good enough. Replacement costs for magnetite fines lost in tailing streams from magnetic drum separators can total hundreds of thousands of dollars a year. But now Swedish engineers are trying to convince North American coal operators that they have a machine that can be added to present systems to reclaim these fines-and this money. This device is called the Magnadisc. Most magnetic drum separator manufacturers claim to be able to hold losses to 1 lb or 2 lb of magnetite per ton of coal cleaned. Actual experience in the field, however, suggests that magnetite losses in heavy-media coal cleaning circuits may be closer to 5 lb per ton. Reduction of losses from 5 lb to 2 lb per ton would save about 15 per ton of coal cleaned. In 1983, the Electric Power Research Institute (EPRI) conducted tests at its Homer City, Pa., Coal Cleaning Test Facility on the Magnadisc, a device designed to recover magnetite fines normally lost in tailings. Based on these tests and on operating experiences at Kaiser Resources mines in Canada, it appears that the Magnadisc can be used successfully as a magnetite fines recovery system in coal cleaning plants. Preliminary test results suggest that the machine can recover a significant percentage of magnetite fines currently discarded in the tailings from magnetic drum separators.

• Research Organization: Electric Power Research Inst., Coal Cleaning Test Facility, Homer City, PA
• OSTI ID: 6344240
• Journal Information: Coal Age; (United States), Journal Name: Coal Age; (United States) Vol. 89:7; ISSN COLAA
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800 -- Coal
Lignite
& Peat-- Waste Management
013000* -- Coal
Lignite
& Peat-- Transport
Handling
& Storage
CHALCOGENIDES
COAL PREPARATION
COAL PREPARATION PLANTS
ENERGY FACILITIES
FIELD TESTS
HEAVY MEDIA SEPARATION
INDUSTRIAL PLANTS
IRON COMPOUNDS
IRON ORES
IRON OXIDES
MAGNETITE
MANAGEMENT
MATERIALS RECOVERY
MINERALS
ORES
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PROCESSING
RECOVERY
RESOURCE RECOVERY FACILITIES
SEPARATION PROCESSES
SOLID WASTES
TAILINGS
TESTING
TRANSITION ELEMENT COMPOUNDS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PROCESSING PLANTS
WASTES