Challenges in the mineralogical characterisation of low-grade nickel laterites
| Přispěvatelé: | Swierczek, Zofia K, Quast, Keith, Addai-Mensah, Jonas, Connor, Jason N, Robinson, David, Li, Jian, XXVI international mineral processing congress (IMPC 2012) New Delhi, India 24-28 September 2012 |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2012 |
| Předmět: | |
| Popis: | This paper reports the results of a detailed mineralogical study of typical, low-grade Australian nickel laterite run-of-mine ores. Successful development of an effective beneficiation process for upgrading such low grade laterite ores relies on good knowledge of the laterite mineralogy and the value metal(s)' distribution characteristics. Both QEMSCAN and quantitative X-ray diffraction techniques were used to conduct the mineralogical analysis of three types of laterite ores, and the results were compared with those obtained by chemical analysis. Some of the major challenges faced included accounting for the mismatch between the nickel values measured by QEMSCAN and those recorded by chemical analysis. This was primarily due to the relatively low concentration of nickel in the ores and its wide dissemination among several major host minerals in complex association. Careful analysis showed that the limit of nickel detection in iron oxide host mineral grains under normal operating conditions was around 4%. Refereed/Peer-reviewed |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|