- Title
- Application of thermal fragmentation in Australian hard rock underground narrow-vein mining
- Creator
- Drake, Bradley; Koroznikova, Larissa; Tuck, Michael; Durkin, Steve
- Date
- 2020
- Type
- Text; Journal article
- Identifier
- http://researchonline.federation.edu.au/vital/access/HandleResolver/1959.17/171133
- Identifier
- vital:14264
- Identifier
-
https://doi.org/10.1007/s42461-019-00154-z
- Identifier
- ISBN:2524-3462
- Abstract
- This paper presents the results from the investigation of the application of thermal fragmentation in Australian hard rock underground narrow-vein mining. Two geologically similar samples from an underground narrow-vein hard rock gold mine were collected to obtain a measure of the technology’s ability to recover ore by the creation of large thermal openings to assess the applicability of the thermal method. Particle size distribution showed a higher generation of fine product, − 2 mm, by thermal fragmentation compared with selective blasting by 31%. The Bond work index for thermal ore (12.62 kWh/t) is half to that of the blasted ore value (25.32 kWh/t). The average grindability obtained for the thermal ore sample was greater than the blasted sample by a factor of 2.44, a higher value indicating a decrease in the energy required to grind. The thermal fragmentation method generates product with higher dissolution of gold in cyanide, by 14% for the − 9.5 + 2 mm size fraction samples. Additionally, the thermal fragmentation results in higher production of − 9.5 + 2 mm material by 15 % compared with selective blasting. © 2019, Society for Mining, Metallurgy & Exploration Inc.
- Publisher
- Springer
- Relation
- Mining, Metallurgy and Exploration Vol. 37, no. 1 (2020), p. 219-229
- Rights
- Copyright @ Society for Mining, Metallurgy & Exploration Inc. 2019
- Rights
- Open Access
- Rights
- https://creativecommons.org/licenses/by/4.0/
- Rights
- This metadata is freely available under a CCO license
- Subject
- 0914 Resources Engineering and Extractive Metallurgy; Fragmentation; Gold; Narrow vein; Underground mining
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