Techno-economic optimization of level and raise spacing in Bushveld Complex platinum reef conventional breast mining.

Simple item page
dc.citation.epage436en_ZA
dc.citation.issue8en_ZA
dc.citation.spage425en_ZA
dc.contributor.authorMusingwini, C.
dc.date.accessioned2018-08-24T13:55:26Z
dc.date.available2018-08-24T13:55:26Z
dc.date.issued2010-08
dc.descriptionTransaction paper.en_ZA
dc.description.abstractThe Bushveld Complex is economically significant and strategically important to South Africa, thus it is imperative that optimal extraction of platinum group metal (PGM) resources on the Bushveld Complex is achieved. Optimal extraction broadly requires that the maximum amount of ore is extracted by excavating and hauling the minimum amount of waste in the shortest possible time, at the least cost, and in the safest and most environmentally acceptable manner. In open-pit mine planning this entails among other things, minimizing the waste stripping ratio, whereas in underground mine planning it includes minimizing the metres of waste development In conventional mining, the main development that is in waste or partly in waste and defines the mining grid pattern, includes levels and raises. It was prudent to consider optimizing level and raise spacing in conventional mining because the method is a prevalent mining method on the Bushveld Complex accounting for nearly 70% of platinum production. The techno-economic optimization of level and raise spacing is characteristically a multi-criteria decision analysis (MCDA) optimization process and should therefore be analysed using MCDA techniques. The analytic hierarchy process (AHP) was the most appropriate MCDA technique for this research study. By using an orebody code named OB1 based on real geological data that was typical of Bushveld Complex platinum reef deposits, the derived optimal range of vertical level spacing was 30 m-50 m, and the optimal range of raise spacing was 180 m-220 m. The research methodology used in this study and the results obtained were received positively by the South African platinum mining Industry because for the first time in several decades, a holistic methodology and practically acceptable solution had been developed for the controversial debate of optimizing level and raise spacing for conventional mining.en_ZA
dc.description.librarianMvdH2018en_ZA
dc.identifier.citationMusingwini, C. 2010. Techno-economic optimization of level and raise spacing in Bushveld Complex platinum reef conventional breast mining. Journal of the Southern African Institute of Mining and Metallurgy 110(8), pp. 425-436.en_ZA
dc.identifier.issn2225-6253
dc.identifier.urihttps://hdl.handle.net/10539/25488
dc.journal.titleJournal of the Southern African Institute of Mining and Metallurgy.en_ZA
dc.journal.volume110en_ZA
dc.language.isoenen_ZA
dc.orcid.id0000-0002-5150-4749en_ZA
dc.publisherThe Southern African Institute of Mining and Metallurgy.en_ZA
dc.rights© 2010. The Southern African Institute of Mining and Metallurgy. This Journal provides immediate open access to its content on the principle that making research freely available to the public supports a greater global exchange of knowledge.en_ZA
dc.subjectTechno-economic optimizationen_ZA
dc.subjectMulti-criteria decision analysis (MCDA)en_ZA
dc.subjectConcentrated miningen_ZA
dc.subjectLagrange multiplieren_ZA
dc.subjectAnalytic hierarchy process (AHP)en_ZA
dc.subjectValuation curveen_ZA
dc.subjectBacklengthen_ZA
dc.subjectOpen pit miningen_ZA
dc.subjectPlatinumen_ZA
dc.titleTechno-economic optimization of level and raise spacing in Bushveld Complex platinum reef conventional breast mining.en_ZA
dc.typeOtheren_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Techno-economic optimization of level and raise spacing in Bushveld Complex platinum reef conventional breast mining.pdf
Size:
4.9 MB
Format:
Adobe Portable Document Format
Description:
Transaction paper
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Research Outputs (Mining Engineering)