Survey and evaluation of current and potential coal beneficiation processes
Coal beneficiation is a generic term used for processes that prepare run-of-mine coal for specific end uses. It is also referred to as coal preparation or coal cleaning and is a means of reducing the sulfur and the ash contents of coal. Information is presented regarding current and potential coal beneficiation processes. Several of the processes reviewed, though not yet commercial, are at various stages of experimental development. Process descriptions are provided for these processes commensurate with the extent of information and time available to perform the evaluation of these processes. Conceptual process designs, preliminary cost estimates, and economic evaluations are provided for the more advanced (from a process development hierarchy viewpoint) processes based on production levels of 1500 and 15,000 tons/day (maf) of cleaned product coal. Economic evaluations of the coal preparation plants are conducted for several project financing schemes and at 12 and 15% annual after-tax rates of return on equity capital. A 9% annual interest rate is used on the debt fraction of the plant capital. Cleaned product coal prices are determined using the discounted cash flow procedure. The study is intended to provide information on publicly known coal beneficiation processes and to indicate the relative costs of various coal beneficiation processes. Because of severe timeconstraints, several potential coal beneficiation processes are not evaluated in great detail. It is recommended that an additional study be conducted to complement this study and to more fully appreciate the potentially significant role of coal beneficiation in the clean burning of coal.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6325011
- Report Number(s):
- ORNL/TM-5953
- Country of Publication:
- United States
- Language:
- English
Similar Records
Process design and economic evaluation of a 100,000-BBL/day Synthoil plant
User manual for PACTOLUS: a code for computing power costs.
Related Subjects
COAL
CLEANING
DEASHING
DESULFURIZATION
COAL PREPARATION
COMPARATIVE EVALUATIONS
ECONOMIC ANALYSIS
AGGLOMERATION
BATTELLE HYDROTHERMAL COAL PROCESS
COST
CYCLONE SEPARATORS
FLOTATION
FLOWSHEETS
HAZEN PROCESS
JIGS
KVB PROCESS
LEDGEMONT PROCESS
MAGNETIC SEPARATORS
MEYERS PROCESS
PITTSBURGH OXYDESULFURIZATION PROCESS
TABLES
TRW PROCESS
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COMMINUTION
CONCENTRATORS
DATA FORMS
DIAGRAMS
ECONOMICS
ENERGY SOURCES
EQUIPMENT
FOSSIL FUELS
FUELS
INERTIAL SEPARATORS
POLLUTION CONTROL EQUIPMENT
SEPARATION PROCESSES
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage
010402 - Coal
Lignite
& Peat- Purification & Upgrading