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Influence of additives on the devolatilization product yield of typical South African coals, and effect on tar composition
(SAIMM, 2018)
South African coal is mainly used for electricity generation by means of
pulverized fuel combustion and liquid fuels production via indirect
gasification technology and Fischer-Tropsch synthesis. In order to expand
the ...
Green coal development for application in fixed-bed catalytic gasification
(SAIMM, 2018)
A novel ‘green coal’ product formulation has recently been developed and
the utilization concept tested at the North-West University coal research
laboratories. Hydrothermal liquefaction was used to produce bio-oil ...
Moisture adsorption and desorption characteristics of some South African coals
(SAIMM, 2013)
The high final total moisture content of fine coal after mining and processing is one of the major reasons that this resource is not extensively used in subsequent power generation, combustion, or other conversion processes. ...
Direct liquefaction of 2 South African bituminous coal fines and their beneficiated float fractions
(EARET, 2018)
The direct liquefaction of South African coal fines
and their density separated (float) fractions were carried out
under moderate conditions in a laboratory autoclave. The
liquefaction temperature ranged between 380 and ...
CO2 reactivity of briquettes derived from discard inertinite-rich Highveld coal using lignosulphonate and resin as binders
(SAIMM, 2019)
South African collieries generate approximately 31 Mt of fine and ultrafine coal annually, with the
majority of the ultrafine fraction discarded in slurry ponds and underground workings. Use can be made
of this energy ...
Testing of briquettes made from Witbank coal fines with polyvinyl alcohol as binder
(EARET, 2018)
Approximately 12% of South Africa’s mined coal
can be classified as fine coal. Fine coal is primarily formed through
mechanical mining methods and can cause blockage in equipment,
transportation mechanisms and silos. ...
Some physical and chemical characteristics of calcium lignosulphonate-bound coal fines
(SAIMM, 2018)
Low-cost calcium lignosulphonate (CL), which is a byproduct of theWOOD
pulping industry, was investigated as a potential binder during laboratoryscale pelletization of inertinite-rich high-ash coal fines from the ...
SEM image processing as an alternative method to determine chromite pre-reduction
(SAIMM, 2017)
The specific energy consumption (SEC) of the pelletized chromite prereduction
process is the lowest of all FeCr production processes
commercially applied. This process also eliminates the use of chromite ore
fines that ...
Damring formation during rotary kiln chromite pre-reduction: effects of pulverized carbonaceous fuel selection and partial pellet melting
(Springer, 2018)
Electricity consumption is the largest cost contributing factor in the production of ferrochrome. Currently the pelletized chromite pre-reduction process (solid-state reduction of chromite) is the process option with the ...
The influence of selected biomass additions on the co-pyrolysis with an inertinite-rich medium rank C grade South African coal
(SAIMM, 2015)
Co-pyrolysis of four biomass samples (hardwood chip, softwood chip,
pinewood chip, and sugarcane bagasse) with an inertinite-rich medium
rank C South African coal was investigated. Proximate and ultimate
analyses of the ...