Exploració per tema "Mines de carbó"

Ara es mostren els items 1-7 de 7

    • A three-dimensional nanoscale study in selected coal mine drainage 

      Silva, Luis F. O.; Crissien, Tito J.; Milanés Batista, Celene; Hoffmann Sampaio, Carlos (2020-06-01)
      Article
      Accés obert
      Sediments from coal mine drainages (CMDs) contain large quantities of suspended pollutants (possibly numerous chemical substances) along with sulfates and hazardous elements (e.g., chromium, zinc, copper, lead) that ...

    • Airflow stability and diagonal mine ventilation system optimization: a case study 

      Bascompta Massanes, Marc; Sanmiquel Pera, Lluís; Zhang, Jiang Ji Ho (2018-09-01)
      Article
      Accés obert
      Airflow reverse is a severe problem in an underground ventilation system. In addition, the airflow stability and safety production can be seriously affected by the problem of air velocity overrun in the roadways. In this ...

    • Analysis of the fire propagation in a sublevel coal mine 

      Fernández-Alaiz, Florencio; Castañón García, Ana María; Gómez Fernández, Fernando; Bernardo Sánchez, Antonio; Bascompta Massanes, Marc (2020-07-21)
      Article
      Accés obert
      A fire has been analyzed in a real underground coal mine, using a sublevel method, duringan entire year. The study was focused on the collapsed area, reproducing a real mixture formed bycoal, waste, and air gap. The analysis ...

    • Effect of secondary oxidation of pre-oxidized coal on early warning value for spontaneous combustion of coal 

      Guo, Chaowei; Jiang, Shuguang; Shao, Hao; Wu, Zhengyan; Bascompta Massanes, Marc (Multidisciplinary Digital Publishing Institute, 2023-03-01)
      Article
      Accés obert
      The indicative ability of a gas indicator for the spontaneous combustion of coal is affected by the secondary oxidation of oxidized coal, from old goafs, entering a new goaf through air leakages. This phenomenon can affect ...

    • Mine water for the generation and storage of renewable energy: A hybrid hydro-wind system 

      Álvarez González, Héctor; Domínguez Peláez, Guillermo; Ordóñez Alonso, Almudena; Menéndez Rodríguez, Javier; Álvarez García, Rodrigo; Asenjo Secades, José María; Loredo Pérez, Jorge (OmniaScience, 2021-03)
      Text en actes de congrés
      Accés obert

    • Mineralogical study of calcined coal waste in a pozzolan/Ca(OH)(2) system 

      García Jiménez, Rosario; Vigil de la Villa, Raquel; Frias Rojas, Moisés; Rodríguez Largo, Olga; Martínez Ramírez, Sagrario; Fernández Carrasco, Lucía; de Soto, I. S.; Villar Cocina, E (2015-05-01)
      Article
      Accés restringit per política de l'editorial
      Activated carbon mining waste influences the formation of hydrated phases, their saturation indexes and mineral stability fields during pozzolanic reactions. The behavior of these reactions is predicted in this study by ...

    • Rare earth elements and carbon nanotubes in coal mine around spontaneous combustions 

      Silva, Luis F. O.; Crissien, Tito J.; Tutikian, Bernardo F.; Hoffmann Sampaio, Carlos (2020-04-20)
      Article
      Accés obert
      Increasing population growth and rise global energy petition have made congregation the requests of energy generation and safety a major challenge global. In another hand nanogeoscience is commencing to develop a viable ...