Electrical resistivity of heat-treated charcoal
| dc.contributor.author | Cromarty, Robert Douglas | |
| dc.contributor.author | Bharat, S. | |
| dc.contributor.author | Odendaal, D. | |
| dc.contributor.email | robert.cromarty@up.ac.za | en_US |
| dc.date.accessioned | 2024-08-16T10:54:49Z | |
| dc.date.available | 2024-08-16T10:54:49Z | |
| dc.date.issued | 2023-10 | |
| dc.description.abstract | The aim of this investigation was to determine the effect of high-temperature heat treatment on the electrical resistivity of charcoal. Samples of two different wood types (eucalyptus and black wattle) were pyrolised in a retort at a temperature of 700°C and the resulting charcoals heat-treated in an induction furnace at temperatures from 800°C to 1800°C and residence times from 60 to 120 minutes. After cooling, the resistivities of the samples were measured at room temperature using the four-point probe technique. It was found that as the heat treatment temperature increased the electrical resistivity of the charcoal decreased, approaching an asymptotic value at higher temperatures. Longer residence times decreased the resistivity, but this effect was not pronounced. | en_US |
| dc.description.department | Materials Science and Metallurgical Engineering | en_US |
| dc.description.librarian | am2024 | en_US |
| dc.description.sdg | SDG-07:Affordable and clean energy | en_US |
| dc.description.sdg | SDG-09: Industry, innovation and infrastructure | en_US |
| dc.description.uri | http://www.saimm.co.za/journal-papers | en_US |
| dc.identifier.citation | Cromarty, R.D., Bharat, S., and Odendaal, D. 2023. Electrical resistivity of heat-treated charcoal. Journal of the Southern African Institute of Mining and Metallurgy, vol. 123, no. 10. pp. 501–508. http://dx.DOI.org/10.17159/2411-9717/2477/2023. | en_US |
| dc.identifier.issn | 2225-6253 (print) | |
| dc.identifier.issn | 2411-9717 (online) | |
| dc.identifier.other | 10.17159/2411-9717/2477/2023 | |
| dc.identifier.uri | http://hdl.handle.net/2263/97698 | |
| dc.language.iso | en | en_US |
| dc.publisher | Southern African Institute of Mining and Metallurgy | en_US |
| dc.rights | © The Southern African Institute of Mining and Metallurgy, 2023. | en_US |
| dc.subject | Charcoal | en_US |
| dc.subject | Electrical resistivity | en_US |
| dc.subject | High temperatures | en_US |
| dc.subject | Heat treatment | en_US |
| dc.subject | SDG-07: Affordable and clean energy | en_US |
| dc.subject | SDG-09: Industry, innovation and infrastructure | en_US |
| dc.title | Electrical resistivity of heat-treated charcoal | en_US |
| dc.type | Article | en_US |