Binderless briquetting - an economic approach to restructuring and enhancing the market value of bituminous coal fines

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:414922

Clark, K ^[1]; Davidson, J

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1. CSIRO, North Ryde (Australia)

For more than 100 years, and on more or less a world-wide basis, numerous approaches for agglomerating bituminous coal fines have been developed and commercially attempted. Many of these processes have required the use of a binder to achieve even a marginally acceptable product and, in most cases, either the cost of the binder or the detrimental consequences of its inclusion ink, the product have made these processes either infeasible or uneconomic from a commercial perspective. During the past decade however, technology developments in the area of high pressure roll briquetting equipment, combined with a better understanding of the relationships between a given coal`s physical and chemical properties (including grindability, size distribution and petrographic properties) and its agglomeration potential in response to various combinations of heat, pressure and shear in conjunction with processing through a roll-type briquetting machine have enabled the development of a relatively low cost approach for the restructuring of many types of bituminous coal fines - thereby providing a potential {open_quote}added-value{close_quote} to what in many instances would otherwise be a {open_quote}low{close_quote} or {open_quote}zero{close_quote} value material. This process may be of particular interest to both producers and users of metallurgical coals - both because of the higher market value of these products, and the concurrent (and often seemingly contradictory) realities that are frequently inherent in conjunction with their production and use.

• OSTI ID: 414922
• Report Number(s): CONF-960460--
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
AGGLOMERATION
BINDERS
BITUMINOUS COAL
BRIQUETTING
COAL FINES
COAL PREPARATION
MARKET
MECHANICAL PROPERTIES
MICROSTRUCTURE
TESTING