Destoning the Moatize Coal Seam, Mozambique, by Dry Jigging
| Autor: | David Selemane José, Eunírio Zanetti Fernandes, Bogdan Cazacliu, Gerson Luis Miltzarek, Carlos Hoffmann Sampaio, Carlos Otávio Petter, Luis Felipe Silva Oliveira, Irineu Antônio Schadach de Brum, Josep Oliva Moncunill, Weslei Monteiro Ambrós |
|---|---|
| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC, Universitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible, Universitat Politècnica de Catalunya [Barcelona] (UPC), Universidade Federal do Rio Grande do Sul [Porto Alegre] (UFRGS), Granulats et Procédés d'Elaboration des Matériaux (MAST-GPEM ), Université Gustave Eiffel, Instituto Tecnológico Vale - ITV, Universidad de la Costa (CUC) |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
lcsh:QE351-399.2
0211 other engineering and technologies CHARBON Fraction (chemistry) 02 engineering and technology 7. Clean energy complex mixtures Water consumption [SPI.MAT]Engineering Sciences [physics]/Materials Benefici de minerals Carbó DECHET 020401 chemical engineering Separation (Technology) Separació (Tecnologia) Organic matter Coal [SPI.GPROC]Engineering Sciences [physics]/Chemical and Process Engineering 0204 chemical engineering Operational costs air jig waste separation Mineração de carvão Destoning 021102 mining & metallurgy PROCEDE DE SEPARATION chemistry.chemical_classification lcsh:Mineralogy Beneficiamento de carvão Waste management Air jig business.industry Coal mining technology industry and agriculture Jigagem Beneficiation Geology Geotechnical Engineering and Engineering Geology destoning Tailings Enginyeria civil::Enginyeria de mines [Àrees temàtiques de la UPC] Moçambique chemistry JET D'AIR Environmental science Waste separation business Moatize coal |
| Zdroj: | Minerals, Vol 10, Iss 771, p 771 (2020) Minerals Volume 10 Issue 9 Minerals, MDPI, 2020, 10 (9), pp.771. ⟨10.3390/min10090771⟩ UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Repositório Institucional da UFRGS Universidade Federal do Rio Grande do Sul (UFRGS) instacron:UFRGS REDICUC-Repositorio CUC Corporación Universidad de la Costa instacron:Corporación Universidad de la Costa |
| ISSN: | 2075-163X |
| Popis: | This paper proposes pre-beneficiation studies by air jigs of the coal layers from a Moatize coal deposit. Pre-beneficiation, also called destoning, removes tailings before the beneficiation plant. The air jigs operate in the same granulometric size range as the heavy-media cyclones (HMCs) that are installed in the preparation plant. With the destoning, the heavy-media circuit operates with a lower coal feed and higher organic matter contents, increasing its cutting efficiency and lowering operational costs. The use of air jigs reduces the total water consumption in the plant, which is especially important for the region where the plant is installed, aswater is particularly scarce. Four coal layers of the Moatize coal deposit were studied, which are currentlyexploited in the mine. As main results of the study, it is possible to say that the concentration of lights (feed of the preparation plant) and heavies (waste fraction) in air jigs can be carried out with reasonable efficiencies for all coal layers studied, making air jigs a feasible option for coal destoning. This research was funded by Instituto Tecnológico Vale (ITV) Ouro Preto, Brazil. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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