Breakage function for HPGR: mineral and mechanical characterization of tantalum and tungsten ores
| Autor: | Marc Bascompta, Antoni Escobet, Teresa Escobet, José Juan de Felipe, David Parcerisa, Hernan Anticoi, Lluís Sanmiquel, Rosa Argelaguet, Sarbast Ahmad Hamid, Maite Garcia-Valles, Esteban Peña-Pitarch, Pura Alfonso, Eduard Guasch, Josep Oliva |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Minera, Industrial i TIC, Universitat Politècnica de Catalunya. Departament d'Enginyeria Mecànica, Universitat Politècnica de Catalunya. GREMS - Grup de Recerca en Mineria Sostenible, Universitat Politècnica de Catalunya. SAC - Sistemes Avançats de Control, Universitat Politècnica de Catalunya. SIC - Sistemes Intel·ligents de Control, Universitat Politècnica de Catalunya. SUMMLab - Sustainability Measurement and Modeling Lab, Universitat Politècnica de Catalunya. SIR - Service and Industrial Robotics, Universitat de Barcelona |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Mineralogia
Materials science Enginyeria civil::Geologia::Mineralogia [Àrees temàtiques de la UPC] 02 engineering and technology Tantalum 010502 geochemistry & geophysics Màquines de mòlta 01 natural sciences breakage comminution modelling mineralogy Modelling 020501 mining & metallurgy Mineral deposits Tàntal (Química inorgànica) Brittleness Breakage Comminution Minerals -- Anàlisi 0105 earth and related environmental sciences Compacting Assaying Metallurgy Minerals--Anàlisi Geology Compactació Geotechnical Engineering and Engineering Geology Compression (physics) Mineralogy Jaciments minerals Grinding Characterization (materials science) Distribution function Compressive strength Enginyeria civil::Enginyeria de mines [Àrees temàtiques de la UPC] 0205 materials engineering Grinding machines |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Recercat. Dipósit de la Recerca de Catalunya instname Minerals; Volume 8; Issue 4; Pages: 170 UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) |
| Popis: | The modelling of high pressure grinding rolls is described by the population balance model, a mass balance which includes several functions that are related to the mineral characteristics, material kinetics and operative conditions of the device. The breakage distribution function is one of these functions and refers to the way in which the daughter particles are generated by the process of comminution. The piston-die press is presented as a methodology to determine the breakage distribution function of two different materials, from the mechanical response point of view: altered granite and a cal-silicate material. The aim is to determine the relation between the operative conditions and the mineral characteristics in order to explain and predict the breakage function parameters. The materials were characterised using XRD and single compression strength tests. The altered granite is a brittle material, which generates more fines under single compression conditions compared to bed compression conditions, mainly due to the mineral composition and the response of the material to the breakage action. The cal-silicate material shows a normal trend in its breakage behaviour. As is expected, the mineralogical characterisation is a useful tool to predict the values of the parameters of the breakage distribution function. |
| Databáze: | OpenAIRE |
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