Projekter pr. år
Abstract
Misclassification of ore grades results in lost revenues, and the need for representative sampling procedures in open pit mining is increasingly important in all mining industries. This study evaluated possible improvements in sampling representativity with the use of Reverse Circulation (RC) drill sampling compared to manual Blast Hole (BH) sampling in the Leveäniemi open pit mine, northern Sweden. The variographic experiment results showed that sampling variability was lower for RC than for BH sampling. However, the total costs for RC drill sampling are significantly exceeding current costs for manual BH sampling, which needs to be compensated for by other benefits to motivate introduction of RC drilling. The main conclusion is that manual BH sampling can be fit-for-purpose in the studied open pit mine. However, with so many mineral commodities and mining methods in use globally, there is no universal best practice for open pit drill sampling and each case must be evaluated individually.
Originalsprog | Engelsk |
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Tidsskrift | Applied Earth Science: Transactions of the Institutions of Mining and Metallurgy |
Vol/bind | 126 |
Udgave nummer | 4 |
Sider (fra-til) | 176-187 |
Antal sider | 12 |
ISSN | 2572-6838 |
DOI | |
Status | Udgivet - 27 dec. 2017 |
Fingeraftryk
Dyk ned i forskningsemnerne om 'Optimal grade control sampling practice in open-pit mining: a full-scale blast hole versus reverse circulation variographic experiment'. Sammen danner de et unikt fingeraftryk.Projekter
- 1 Afsluttet
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LKAB: Critical success factors for exploration, mining and processing at LKAB, Sweden - Theory of Sampling (TOS), Process Analytical Technology (PAT), Chemometrics & Best Practice vs. Best Value evaluation
Engström, K., Esbensen, K. & Kucheryavskiy, S.
20/11/2015 → 20/11/2018
Projekter: Projekt › Forskning