Investigation of Pyrite as a Contributor to Slagging in Eastern Bituminous Coals. Quarterly Progress Report 9, October 1-December 31, 1983 PDF Download
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Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The objective of this program is to examine slags formed as a result of firing coals with varying concentration levels, size distribution, and orientation of pyrite with regard to mineral matter in the coal in a laboratory furnace. The program tasks are: (1) selection of eight candidate coals; (2) chemical characterization of the coal samples and identification of the pyrite size, distribution, and orientation with respect to other mineral matter and concentration levels; (3) testing of the candidate coals in a laboratory furnace; (4) chemical and physical characterization of the slag and fly ash samples created by the impurities in the coal sample; (5) influence of coal beneficiation on furnace slagging; and (6) analysis of data and identification of parameters influencing the contribution of pyrite to slagging problems. Washing of the Upper Freeport coal from Indiana County, Pennsylvania, was completed by the last quarter of 1983. The washed product was characterized for mineral content, and a combustion test was performed. Kentucky No. 9 from Henderson County, Kentucky, selected as the sixth coal to be investigated, was characterized using size and gravity fractionation techniques and was combusted in the laboratory furnace to evaluate its slagging and fouling potential. The remaining two coals to be characterized and combusted were identified as Illinois No. 5 and Lower Kittanning from Clarion County, Pennsylvania. 80 figures, 27 tables.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
The objective of this program is to examine slags formed as a result of firing coals with varying concentration levels, size distribution, and orientation of pyrite with regard to mineral matter in the coal in a laboratory furnace. The program tasks are: (1) selection of eight candidate coals; (2) chemical characterization of the coal samples and identification of the pyrite size, distribution, and orientation with respect to other mineral matter and concentration levels; (3) testing of the candidate coals in a laboratory furnace; (4) chemical and physical characterization of the slag and fly ash samples created by the impurities in the coal sample; (5) influence of coal beneficiation on furnace slagging; and (6) analysis of data and identification of parameters influencing the contribution of pyrite to slagging problems. Washing of the Upper Freeport coal from Indiana County, Pennsylvania, was completed by the last quarter of 1983. The washed product was characterized for mineral content, and a combustion test was performed. Kentucky No. 9 from Henderson County, Kentucky, selected as the sixth coal to be investigated, was characterized using size and gravity fractionation techniques and was combusted in the laboratory furnace to evaluate its slagging and fouling potential. The remaining two coals to be characterized and combusted were identified as Illinois No. 5 and Lower Kittanning from Clarion County, Pennsylvania. 80 figures, 27 tables.
Author: Publisher: ISBN: Category : Languages : en Pages :
Book Description
Slagging by bituminous eastern US coals in industrial furnaces results primarily from pyritic iron in the coal ash. Since it has been learned that coals of similar pyritic levels fired in furnaces of similar design do not always produce the same slagging conditions, and since segregation of pyrites from other minerals does occur when slagging is encountered, slagging must be attributed to the size and orientation of the pyrites in the coal, in addition to their concentration level. A program is underway to examine slags from coals with varying concentration levels, size distribution, and orientation of pyrite with other mineral matter, when the coals are fired in a laboratory furnace under controlled conditions simulating an industrial furnace. During Task 1 Foster Wheeler will select eight candidate coals with variations in pyrite size and distribution according to the specifications of the Research Plan. The selection will be made after reviewing the specification with such agencies as the DOE Fuel Preparation Laboratory at Bruceton, Pennsylvania; the Pennsylvania State College of Mineralogy and Coal Combustion Laboratory; the Coal Research Department of the University of Kentucky; the Indiana State Geological Survey; and the Illinois Geological Survey. Foster Wheeler will locate the source of each coal, negotiate the coal purchase, and arrange for shipment of the required amount of each coal selected. The coals will be selected to provide a suitable matrix of pyrite size distribution and concentration, permitting identification of the source of pyrite responsible for slagging.
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Author: United States. Department of Energy
Author: Ричард В. Бриерс
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