The effects of advanced physical coal cleaning on mineral matter and ash composition and its relationship to boiler slagging and fouling potential

Conference · Fri Jan 01 04:00:00 EST 1988 · Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA)

OSTI ID:5422206

DeMaris, P J; Read, R B; Camp, L R ^[1]

---

1. Illinois State Geological Survey, Champaign (USA)

Recent progress in cleaning medium to high-sulfur coals from the Illinois Basin by advanced flotation methods has led to the need to evaluate changes in the ash fusion temperatures of deep cleaned coal. Because the alumina-and silica-rich clay minerals and coarse pyrite are more easily removed during coal cleaning than finely disseminated pyrite, it is believed that deeply cleaned coal products may have lower ash fusion temperatures because of altered composition of the remaining ash. To investigate this question a suite of six coals, cleaned to various degrees, were analyzed for ash chemistry (ASTM method on 750 C Ash), ash fusion temperatures, petrographic variation and mineralogic composition. The samples include the two major mined seams in the Illinois Basin, the Herrin (No. 6) and Springfield (No. 5) Coal Members, as well as the widely used Pittsburgh seam. In this abbreviated paper results for ash chemistry and ash fusion analysis are reported and evaluated.

• OSTI ID: 5422206
• Report Number(s): CONF-8806316--
• Conference Information: Journal Name: Preprints of Papers, American Chemical Society, Division of Fuel Chemistry; (USA) Journal Volume: 33:2
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010300* -- Coal
Lignite
& Peat-- Preparation-- (1987-)
ALKALINE EARTH METAL COMPOUNDS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ASH CONTENT
ASHES
BITUMINOUS COAL
BLACK COAL
BOILERS
CALCIUM COMPOUNDS
CALCIUM OXIDES
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL COMPOSITION
COAL
COAL PREPARATION
CORRELATIONS
DEASHING
DEFORMATION
ENERGY SOURCES
FLOTATION
FORECASTING
FOSSIL FUELS
FOULING
FUELS
IRON COMPOUNDS
IRON OXIDES
IRON SULFIDES
MATERIALS
MELTING
MINERALOGY
MINERALS
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PETROGRAPHY
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PYRITE
REMOVAL
RESIDUES
SEPARATION PROCESSES
SILICON COMPOUNDS
SILICON OXIDES
SIZE
SULFIDE MINERALS
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE DEPENDENCE
TEMPERATURE MEASUREMENT
THERMODYNAMIC PROPERTIES
TRANSITION ELEMENT COMPOUNDS