Recovery of coal fines from preparation plant effluents

Technical Report · Mon Jan 01 04:00:00 EST 1990

OSTI ID:5925530

Choudhry, V ^[1]; Khan, L ^[2]; Yang, D ^[3]

---

1. Praxis Engineers, Inc., Milpitas, CA (USA)
2. Illinois State Geological Survey, Champaign, IL (USA)
3. Michigan Technological Univ., Houghton, MI (USA)

The objectives of this project are to test and demonstrate the feasibility of recovering the coal fines which are currently disposed of with plant effluent streams in order to produce a fine clean coal product. This product can then be blended with the coarse clean coal from the preparation plant. Recovery of carbonaceous material from the effluent streams will be effected by means of Michigan Technological University's static tube flotation process in conjunction with pyrite depressants. This process has been successfully demonstrated on a number of coals to reject 85% of the pyritic sulfur and recover 90% of the Btu value. The process parameters will be modified to accept preparation plant effluents in order to produce a low-ash, low-sulfur clean coal product that at a minimum is compatible with the quality requirements of the plant clean coal. This report covers the first quarter of the project. The main activities during this period were the drafting of a project work plan and the collection of four coal preparation plant effluent samples for testing. Effluent slurry samples were collected from four operating preparation plants in Illinois and shipped to Michigan Technological University for experimental work.

• Research Organization: Illinois State Geological Survey, Champaign, IL (USA)
• Sponsoring Organization: DOE; USDOE, Washington, DC (USA)
• DOE Contract Number: FG22-90PC90176
• OSTI ID: 5925530
• Report Number(s): DOE/PC/90176-T7; ON: DE91010506
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ASH CONTENT
BITUMINOUS COAL
BLACK COAL
CARBONACEOUS MATERIALS
CHEMICAL ANALYSIS
COAL
COAL FINES
COAL PREPARATION
DOCUMENT TYPES
ENERGY SOURCES
FEDERAL REGION V
FLOTATION
FOSSIL FUELS
FUELS
ILLINOIS
MANAGEMENT
MATERIALS
MATERIALS RECOVERY
MINERALOGY
NORTH AMERICA
PHYSICAL PROPERTIES
PROCESSING
PROCUREMENT
PROGRESS REPORT
RECOVERY
SAMPLE PREPARATION
SEPARATION PROCESSES
SOLID WASTES
SULFUR CONTENT
SURFACE PROPERTIES
TAILINGS
USA
WASTE MANAGEMENT
WASTE PROCESSING
WASTES