Exploració per tema "Tungstè"

Ara es mostren els items 1-12 de 12

    • An improved high-pressure roll crusher model for tungsten and tantalum ores 

      Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hamid, Sarbast; Oliva Moncunill, Josep; Alfonso Abella, María Pura; Bascompta Massanes, Marc; Sanmiquel Pera, Lluís; Escobet Canal, Teresa; Escobet Canal, Antoni; Parcerisa Duocastella, David; Peña Pitarch, Esteve; Argelaguet Isanta, María Rosa; Felipe Blanch, José Juan de (2018-10-25)
      Article
      Accés obert
      An improved approach is presented to model the product particle size distribution resulting from grinding in high-pressure roll crusher with the aim to be used in standard high-pressure grinding rolls (HPGR). This approach ...

    • Caracterització mineralògica dels materials dels dipòsits de tungstè de Mittersill i Morille per el seu processament 

      Call Espinalt, Joan (Universitat Politècnica de Catalunya, 2016-01)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      La mineralogia dels dipòsits de tungstè de Mittersill (Àustria) i Morille (Espanya) han estat caracteritzats. L’objectiu d’aquest treball és caracteritzar dipòsits de tungstè per que es pugui desenvolupar una metodologia ...

    • Heat generation model in the milling process of the Tantalum mineral in the ball mill 

      Mariño Salguero, Jessica Marcela (Universitat Politècnica de Catalunya, 2015-06-09)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Tantalum is a rare metal with many application in the electronic industry. This metal is less abundant in the world than gold. Large quantities of energy are required for its extraction. OPTIMORE is a project funded by ...

    • High-pressure grinding rolls: model validation andfunction parameters dependency on processconditions 

      Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Oliva Moncunill, Josep; Alfonso Abella, María Pura; Bascompta Massanes, Marc; Sanmiquel Pera, Lluís (Elsevier, 2019)
      Article
      Accés obert
      A model for High Pressure Grinding Rolls (HPGR) was developed in this work based on thewidely used Population Balance Model (PBM). This approach uses a variety of different func-tions one of which is the breakage distribution ...

    • Identificació de la wolframita a partir de pixels mitjançant Machine Learning 

      Abril Soler, Toni (Universitat Politècnica de Catalunya, 2017-07)
      Treball Final de Grau
      Accés restringit per decisió de l'autor
      Cada vegada més, es persegueix aconseguir millores d’eficiència i l’abaratiment de qualsevol tasca a realitzar dins d’una empresa, amb l’objectiu de ser més competitiu al mercat i sobretot, anar per davant a la teva ...

    • Mineria del tàntal i del tungstè. Present i perspectives de futur 

      Sánchez Cornet, Ricard (Universitat Politècnica de Catalunya, 2016-03)
      Treball Final de Grau
      Accés restringit per decisió de l'autor

    • Modeling the liberation of comminuted scheelite using mineralogical properties 

      Hamid, Sarbast; Alfonso Abella, María Pura; Oliva Moncunill, Josep; Anticoi Sudzuki, Hernán Francisco; Guasch Cascallo, Eduard; Hoffmann Sampaio, Carlos; García-Vallès, Maite; Escobet Canal, Teresa (2019-09-03)
      Article
      Accés obert
      In this paper, the modeling of the liberation of scheelite is presented. A pattern of concentration experiments was performed to investigate the scheelite liberation and distribution density calculation procedure. In this ...

    • Nonlinear effects of electrode and bragg reflector materials in BAW resonators 

      García Pastor, David; González Rodríguez, Marta; Hueltes Escobar, Alberto; Collado Gómez, Juan Carlos; Mateu Mateu, Jordi; González Arbesú, José María; Kreuzer, Susanne; Aigner, Robert (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Comunicació de congrés
      Accés restringit per política de l'editorial
      This work presents a broadband characterization and modeling of the second harmonic nonlinear response in Bulk acoustic wave (BAW) resonators. The proposed circuit model is based on the constitutive equations describing ...

    • Optimisation of tungsten ore processing through a deep mineralogical characterisation and the study of the crushing process 

      Bascompte Vaquero, Jordi (Universitat Politècnica de Catalunya, 2017-07)
      Treball Final de Grau
      Accés obert
      Realitzat a/amb:   Chalmers tekniska högskola
      The unstoppable increasing global demand for metals calls for an urgent development of more efficient extraction and processing methods in the mining industry. Comminution is responsible for nearly half of the energy ...

    • Potential of tungsten tailings as glass raw materials 

      Alfonso Abella, María Pura; Tomasa Guix, Oriol; García-Vallès, Maite; Tarragó Aymerich, Mariona; Martínez Manent, Salvador (2018-10-01)
      Article
      Accés obert
      Glasses from different types of tungsten mine tailings were obtained and studied to determine their ability to be used as raw materials of commercial glass. Tailings of granitic composition from Barruecopardo, of calc-silicate ...

    • Recycling of tailings from the Barruecopardo tungsten deposit for the production of glass 

      Alfonso Abella, María Pura; Castro López, David; García-Vallès, Maite; Tarragó Aymerich, Mariona; Tomasa Guix, Oriol; Martínez Manent, Salvador (Springer, 2016-02-26)
      Article
      Accés obert

    • The development of flotation and its laboratory testing based on scheelite mineral sample 

      Chugunova, Marina (Universitat Politècnica de Catalunya, 2016-07)
      Projecte Final de Màster Oficial
      Accés restringit per decisió de l'autor
      Development of flotation plant comprises the accomplishment of various tasks. Such tasks account for the plant equipment selection based on different calculations of equipment parameters and flotation flowsheet. In order ...