Characterization of Coal Composition of Shela Area, Wolayita Zone, Southern Ethiopia, Implication
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Date
2023-06
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Addis Ababa University
Abstract
The present study focused on the mineral characterization of Kindo-Didaye coal by adiabatic
Calorie Metter, Gravimetric, hard groove index and proximate techniques. The result showed
that coal quality ranged between (2475.79-10931.96Btu/lb); Sulphur (<0.02 % to 2.93%),
moisture (1.21 to 1.99 %), volatile matter (15.45 to 26.37%), ash content (28.19 to 71.26%) and
fixed carbon (11.21 to 44.23%). The majority of the Coal samples fall within lignite “B”, subbituminous
“B” and sub-bituminous “C” ranks and none agglomerating. The grindablity index
of the majority of the coal samples has the range (56.2-66), which HGI values of the Shela area
coal samples indicate that most of the samples can be characterized as lignite and are also
extremely challenging to grind.
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Keywords
Proximate analysis, Calorific value, Rank, Sulphur content, Coal quality