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Title: The potential of coal wastes in South Africa
Authors: Lloyd, Philip JD 
Keywords: Coal wastes;South Africa;Mpumalanga;Department of Minerals and Energy
Issue Date: 2000
Publisher: The South African Institute of Mining and Metallurgy
Journal: The Journal of The South African Institute of Mining and Metallurgy 
Abstract: There are few data on the composition of discard coal in South Africa, and no overall view of the discards for the entire industry. As a result of work on coal qualities in South Africa, a database was established which enabled a good estimate to be made of the composition of the discard from every mine. The data are presented in the form of histograms of ash, volatile matter and fixed carbon content of the 43 million tons of material which were discarded in 1990. The results are discussed in terms of the closeness of the composition of much of the discard material to presently used power station coal. It is concluded that it is mainly developments in equipment, particularly fluidized bed boilers, which inhibit the wider use of discard coal. However, other factors must be noted, including the relatively high sulphur content of the discards, and the fact that even with the most careful storage the material ages and may become unusable after about 15 years.
ISSN: 2411-9717
Appears in Collections:Eng - Journal articles (DHET subsidised)

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