Design of optimum coal-preparation systems for Missouri coal seams. Final report
The objectives of this research were (1) with the use of washability curves and other data, to design suitable coal preparation systems that will provide marketable coals with maximum yield and minimum ash and sulfur contents for raw coals obtained from different Missouri coal seams, and (2) to test the performance of units comprising the systems (flowsheets) with the use of the equipment available at the Mineral and Coal Preparation Laboratories of the University of Missouri at Rolla. On each channel sample, proximate analysis, float and sink, tabling, flotation, hydrocyclone, and forms of sulfur tests were conducted. Because of the limited quantities of core samples, only such tests as proximate analysis, washability, and forms of sulfur could be performed. A survey of the mining operations in the state of Missouri showed that at least six companies worked more than one seam at any time of the year and that most of the coal mined was direct-shipped to power plants. Since there were no data available about the washability and other characteristics of these jointly mined coals, new samples were prepared according to their production ratios and all the tests performed on individual samples were also applied to these joint samples. Also, for these samples the most suitable coal preparation systems (flowsheets) were designed and tested in the laboratory. The actual test results obtained with the use of eight different circuits for the six sets of jointly mined seams were compared with the individual test results. It was concluded that for optimum yield and maximum ash and sulfur removal, a physical washing system containing dense medium and Deister Table is the most suitable coal preparation method for Missouri coals.
- Research Organization:
- Missouri Univ., Rolla (USA). Dept. of Mining Engineering
- DOE Contract Number:
- FG01-81FE00101
- OSTI ID:
- 6738220
- Report Number(s):
- DOE/FE/00101-T1; ON: DE83000239
- Country of Publication:
- United States
- Language:
- English
Similar Records
Development of a methodology for sampling fine coal-waste impoundments: a study of Alabama impoundments. Final report
Pilot-Scale Testing of an Integrated Circuit for the Extraction of Rare Earth Minerals and Elements from Coal and Coal Byproducts Using Advanced Separation Technologies
Related Subjects
COAL PREPARATION PLANTS
DESIGN
SIMULATION
YIELDS
ASHES
COAL
COAL PREPARATION
EXPERIMENTAL DATA
FLOWSHEETS
HEAVY MEDIA SEPARATION
MISSOURI
REMOVAL
SULFUR
TABLES
WASHING
CARBONACEOUS MATERIALS
CLEANING
COMMINUTION
DATA
DIAGRAMS
ELEMENTS
ENERGY SOURCES
FEDERAL REGION VII
FOSSIL FUELS
FUELS
INDUSTRIAL PLANTS
INFORMATION
MATERIALS
NONMETALS
NORTH AMERICA
NUMERICAL DATA
RESIDUES
SEPARATION PROCESSES
USA
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage