South African Coal

South African Coal

Indonesian Coal

South Africa remains one of the most important coal producing countries in the world—not only because it is the seventh largest global coal exporter, but also because it burns substantial amounts of thermal coal for generating and delivering electricity. The easy and direct access to abundant thermal coal as well as its use as a cheap energy source has meant that four main markets have developed for South African coals over the years since is discovery. These four markets include the global export market, the domestic synfuels market, the domestic energy supply, and the domestic heating and industrial use.

Approximately 27% of all saleable coal produced in South Africa is exported to energy providers, cement, and metallurgical plants in mainly Europe, South America, China, and India.

South African Coal

Specification sheet of coal quality


Proximate analyses
Inherent moisture % 3
Total moisture % 8
Ash % 15
Volatile matter % 28
Fixed carbon % 54
Ultimate analyses
Carbon % 70.8
Hydrogen % 4.49
Nitrogen % 1.61
Oxygen % 23.1
Sulphur % 1.4
Forms of sulphur
Pyratic % 0.878
Sulphatic % 0.051
Organic % 0.271
Total % 1.200
Milling
HGI 56
Abrasion index 243
Ash fusion temperatures
Reducing
Deformation temp. +1220
Spherical temp. +1250
Hemisphere temp. +1280
Flow temp. +1320
Oxidizing
Deformation temp. +1260
Spherical temp. +1310
Hemisphere temp. +1340
Flow temp. +1380
Calorific value
Gross specific energy MJ/kg 27
kcal/kg 6500
NAR specific energy MJ/kg 25
kcal/kg 6000
Ash composition
SiO2 % 49.24
AI2O3 % 23.84
TiO2 % 1.56
P2O5 % 0.30
CaO % 4.81
MgO % 1.73
Na2O % 0.36
K2O % 1.07
SO3 % 4.47
MnO % 0.03
BaO % 0.18
Sr % 0.18
V2O2 % 0.05
Cr2O3 % 0.05
Z rO2 % 0.11
Total % 99.05