Discrete X-ray tomographic reconstruction for fast mineral liberation spectrum retrieval
| Autor: | Massimiliano Zanin, Marzio Piller, Gianni Schena |
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| Přispěvatelé: | Schena, Gianni, Piller, Marzio, Zanin, Massimiliano |
| Rok vydání: | 2015 |
| Předmět: |
Mineral liberation
Data processing Tomographic reconstruction Basis (linear algebra) Computer science Mineralogy Geotechnical Engineering and Engineering Geology Bottleneck Reduction (complexity) Data acquisition Sampling (signal processing) Geochemistry and Petrology X-ray tomography Discrete algebraical techniques Projection (set theory) Algorithm |
| Zdroj: | International Journal of Mineral Processing. 145:1-6 |
| ISSN: | 0301-7516 |
| DOI: | 10.1016/j.minpro.2015.11.002 |
| Popis: | In mineral beneficiation, the mineral liberation spectrum of the plant feed conveys valuable information for adjusting operations, provided that it is available in minutes from particulate sampling. X-ray micro-tomography is the only technique available for unbiased measurement of composite particle composition (on a 3D basis). The bottleneck of current micro-tomographic systems is the X-ray scanning time (data acquisition) rather than the slice reconstruction time (data processing). An algorithm capable of reconstructing tomographic slices of composite mineral particles from a limited number of radiographic projections, thus significantly reducing the overall measurement time, is presented and demonstrated with numerical examples. The algorithm is cast around the discrete algebraical reconstruction technique and requires less than one tenth of the projection data needed by the currently used filtered back-projection methods, thus allowing a dramatic reduction of the scanning time. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
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