dc.contributor.author | Henning, C.N. | |
dc.contributor.author | Leokaoke, N.T. | |
dc.contributor.author | Bunt, J.R. | |
dc.contributor.author | Waanders, F.B. | |
dc.date.accessioned | 2020-02-25T07:42:50Z | |
dc.date.available | 2020-02-25T07:42:50Z | |
dc.date.issued | 2018 | |
dc.identifier.citation | Henning, C.N. et al. 2018. Testing of briquettes made from Witbank coal fines with polyvinyl alcohol as binder. 10th International Conference on Advances in Science, Engineering, Technology & Healthcare (ASETH-18), 19-20 Nov 2018, Cape Town, South Africa: 78-81. [https://doi.org/10.17758/EARES4.EAP1118226] | en_US |
dc.identifier.isbn | 978-81-938365-2-1 | |
dc.identifier.uri | http://hdl.handle.net/10394/34191 | |
dc.identifier.uri | https://www.eares.org/siteadmin/upload/4301EAP1118226.pdf | |
dc.identifier.uri | https://doi.org/10.17758/EARES4.EAP1118226 | |
dc.description.abstract | 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. Agglomeration methods are
therefore used to simplify the handling of coal fines as well as
enable the use of the fines in industrial processes. This report
focuses on the briquetting of coal fines from the Witbank area.
Polyvinyl alcohol (PVA) was used as the binder and mechanical
strength tests, i.e. compressive strength, impact resistance,
abrasion resistance and water resistance, were used to determine
the effectiveness of the binder. Thermogravimetric analysis (TGA)
was used to determine the reactivity of the briquettes and the
estimated cost of the briquettes was compared to binderless
briquettes to determine the financial feasibility of the binder. The
optimal briquette was determined to have a formulation (PVA vs.
water) of 5% and a dosage (binder vs. coal) of 0.9% with a 7%
increase in compressive strength and a 3% increase in price. The
calorific value, 20.7 MK/kg, and the ash content, 26%, of the coal
was not impacted by the PVA in the binder. However, neither the
paraffin nor the spray increased the water resistance of the
briquettes and other waterproofing methods should be
investigated | en_US |
dc.language.iso | en | en_US |
dc.publisher | EARET | en_US |
dc.subject | Agglomeration | en_US |
dc.subject | Coal fines | en_US |
dc.subject | Polyvinyl alcohol | en_US |
dc.subject | Thermogravimetric analysis | en_US |
dc.title | Testing of briquettes made from Witbank coal fines with polyvinyl alcohol as binder | en_US |
dc.type | Presentation | en_US |
dc.contributor.researchID | 24217646 - Henning, Chantalé | |
dc.contributor.researchID | 20164200 - Bunt, John Reginald | |
dc.contributor.researchID | 20897952 - Leokaoke, Nthabiseng Tumelo | |
dc.contributor.researchID | 10059571 - Waanders, Frans Boudewijn | |