Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study
Magnetic separation is often considered pertinent for manganese ore beneficiation when the ore is abundant with siliceous rich gangue mineral phases. However, the process is deemed to be inapposite for the ferruginous type of ore, and remains a grey area of research. In the present investigation, tw...
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| Format: | Article |
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MDPI AG
2021-01-01
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| Series: | Minerals |
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| Online Access: | https://www.mdpi.com/2075-163X/11/2/150 |
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| author | Sharath Kumar Bhoja Sunil Kumar Tripathy Yanamandra Rama Murthy Tamal Kanti Ghosh C. Raghu Kumar Deba Prasad Chakraborty |
| author_facet | Sharath Kumar Bhoja Sunil Kumar Tripathy Yanamandra Rama Murthy Tamal Kanti Ghosh C. Raghu Kumar Deba Prasad Chakraborty |
| author_sort | Sharath Kumar Bhoja |
| collection | DOAJ |
| description | Magnetic separation is often considered pertinent for manganese ore beneficiation when the ore is abundant with siliceous rich gangue mineral phases. However, the process is deemed to be inapposite for the ferruginous type of ore, and remains a grey area of research. In the present investigation, two different types of manganese ore were studied in detail to understand the influence of mineralogy on their magnetic separation performance. Detailed experiments were performed by varying the critical variables of the dry magnetic separator, and the separation features were studied. The ore samples were thoroughly characterized by various techniques, including an automated advanced mineralogical tool. The mineralogical results revealed that primary manganese bearing minerals in both the ores are rich in cryptomelene, pyrolusite, psilomelane, and bixybyite. Similarly, the major gangue minerals were alumina-bearing minerals and iron-bearing phases (hematite and goethite). The optimum grade that could be obtained from single-stage dry magnetic separation was 35.52% Mn, and with a Mn:Fe ratio of 1.77, and 44% Mn recovery in the case of sample 1; whereas, a 33.75% Mn grade, with a Mn:Fe ratio of 1.66 at Mn recovery of 44% was reported for Sample 2. It was observed that both samples had a similar input chemistry (~28% Mn, ~1 Mn: Fe ratio) however, they had distinctive mineralogical assemblages. Furthermore, it was observed that the liberation of manganese mineral was in a course size range, i.e., 300 to 450 µm, while the association of iron and manganese bearing phases was lower in sample 1 when compared to sample 2. |
| first_indexed | 2024-03-09T06:17:42Z |
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| language | English |
| last_indexed | 2024-03-09T06:17:42Z |
| publishDate | 2021-01-01 |
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| series | Minerals |
| spelling | doaj.art-5d34ed70331548a4a3e0da3bb2e167932023-12-03T11:51:17ZengMDPI AGMinerals2075-163X2021-01-0111215010.3390/min11020150Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative StudySharath Kumar Bhoja0Sunil Kumar Tripathy1Yanamandra Rama Murthy2Tamal Kanti Ghosh3C. Raghu Kumar4Deba Prasad Chakraborty5Process Technology Group, Tata Steel, Jamshedpur 831001, IndiaResearch and Development Division, Tata Steel Ltd., Jamshedpur 831001, IndiaResearch and Development Division, Tata Steel Ltd., Jamshedpur 831001, IndiaResearch and Development Division, Tata Steel Ltd., Jamshedpur 831001, IndiaProcess Technology Group, Tata Steel, Jamshedpur 831001, IndiaProcess Technology Group, Tata Steel, Jamshedpur 831001, IndiaMagnetic separation is often considered pertinent for manganese ore beneficiation when the ore is abundant with siliceous rich gangue mineral phases. However, the process is deemed to be inapposite for the ferruginous type of ore, and remains a grey area of research. In the present investigation, two different types of manganese ore were studied in detail to understand the influence of mineralogy on their magnetic separation performance. Detailed experiments were performed by varying the critical variables of the dry magnetic separator, and the separation features were studied. The ore samples were thoroughly characterized by various techniques, including an automated advanced mineralogical tool. The mineralogical results revealed that primary manganese bearing minerals in both the ores are rich in cryptomelene, pyrolusite, psilomelane, and bixybyite. Similarly, the major gangue minerals were alumina-bearing minerals and iron-bearing phases (hematite and goethite). The optimum grade that could be obtained from single-stage dry magnetic separation was 35.52% Mn, and with a Mn:Fe ratio of 1.77, and 44% Mn recovery in the case of sample 1; whereas, a 33.75% Mn grade, with a Mn:Fe ratio of 1.66 at Mn recovery of 44% was reported for Sample 2. It was observed that both samples had a similar input chemistry (~28% Mn, ~1 Mn: Fe ratio) however, they had distinctive mineralogical assemblages. Furthermore, it was observed that the liberation of manganese mineral was in a course size range, i.e., 300 to 450 µm, while the association of iron and manganese bearing phases was lower in sample 1 when compared to sample 2.https://www.mdpi.com/2075-163X/11/2/150dry magnetic separationmineralogyferruginous manganese oredry beneficiationMLA |
| spellingShingle | Sharath Kumar Bhoja Sunil Kumar Tripathy Yanamandra Rama Murthy Tamal Kanti Ghosh C. Raghu Kumar Deba Prasad Chakraborty Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study Minerals dry magnetic separation mineralogy ferruginous manganese ore dry beneficiation MLA |
| title | Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study |
| title_full | Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study |
| title_fullStr | Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study |
| title_full_unstemmed | Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study |
| title_short | Influence of Mineralogy on the Dry Magnetic Separation of Ferruginous Manganese Ore—A Comparative Study |
| title_sort | influence of mineralogy on the dry magnetic separation of ferruginous manganese ore a comparative study |
| topic | dry magnetic separation mineralogy ferruginous manganese ore dry beneficiation MLA |
| url | https://www.mdpi.com/2075-163X/11/2/150 |
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