Evaluation of the effect of coal cleaning on fugitive elements: Phase 4, Identification of mineral forms in coal: Final report for the period May 1983 to December 1986. [Mineral, major and trace elements in feed and deep cleaned coal]

Technical Report · Mon Dec 01 04:00:00 EST 1986

OSTI ID:6314103

Streeter, R C

This report describes the final phase of a program, activated in 1977, to study the removal of trace elements from coal during cleaning by both controlled laboratory procedures and in commercial coal preparation plants. The Phase IV studies, discussed herein, were originally intended to focus on the mineral constituents in the coal ashes and their relative amounts with respect to known major and trace element concentrations. However, because of changing priorities, the scope of work was redirected in mid-1984 to the characterization of major elements, trace elements, and mineral forms in ultra-cleaned coals from several advanced coal cleaning processes under development. These included the Otisca T, TRW Gravimelt, and LICADO (Liquid Carbon Dioxide) processes. Data are presented for major elements (Si, Al, Fe, Ca, Mg, Ti, P, Na, and K) and trace elements (As, B, Be, Cd, Co, Cu, Mn, Ni, Pb, Sb, Sr, V, and Zn) in feed and product coals from the three processes cited above. The data are evaluated in terms of reduction or enrichment of the ash elemental constituents during coal cleaning, as well as implications for gas turbine slurry fuel applications. Mineral constituents in most of the ultra-clean coal feed and product fractions were identified using X-ray diffraction techniques, and reductions in certain mineral components during coal cleaning were apparent. A limited amount of data was obtained on changes in mineral constituents during physical separations of Illinois No. 6 coal fines (minus 30 mesh). A novel method for the direct determination of certain volatile trace elements (e.g., As, Hg, Se, and Sb) in milligram-quantities of whole coal showed sufficient potential to warrant further investigation. 7 refs., 5 figs., 16 tabs.

• Research Organization: BCR National Lab., Monroeville, PA (USA)
• DOE Contract Number: AC22-83PC62690
• OSTI ID: 6314103
• Report Number(s): DOE/PC/62690-T7; BCR-L-1551; ON: DE87008697
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
010600 -- Coal
Lignite
& Peat-- Properties & Composition
ABSORPTION SPECTROSCOPY
ALKALI METALS
ALKALINE EARTH METALS
ALUMINIUM
ANTIMONY
ARSENIC
ASHES
BERYLLIUM
BORON
CADMIUM
CALCIUM
CARBONACEOUS MATERIALS
CHEMICAL COMPOSITION
COAL
COAL PREPARATION
COBALT
COHERENT SCATTERING
COPPER
DATA
DIFFRACTION
ELEMENTS
EMISSION SPECTROSCOPY
ENERGY SOURCES
FOSSIL FUELS
FUELS
GRAVIMELT PROCESS
HEAVY MEDIA SEPARATION
INFORMATION
INFRARED SPECTRA
IRON
LEAD
MAGNESIUM
MANGANESE
MATERIALS
MERCURY
METALS
MINERALS
NICKEL
NONMETALS
NUMERICAL DATA
OTISCA PROCESS
PHOSPHORUS
POTASSIUM
RESIDUES
SCATTERING
SELENIUM
SEMIMETALS
SEPARATION PROCESSES
SILICON
SODIUM
SPECTRA
SPECTROSCOPY
STRONTIUM
TITANIUM
TRACE AMOUNTS
TRANSITION ELEMENTS
VANADIUM
X-RAY DIFFRACTION
ZINC