Efecto del pH, velocidad del aire y concentración de espumante sobre la cinética de flotación de cuatro carbones colombianos
constant of four Colombian bituminous coal samples: Cerrejón K60 (Guajira), Nechí M1 (Antioquia), La Jagua 15 (Cesar) y Guachinte (Valle del Cauca). A flotation column of 5 m was used for all the runs. The samples were processed in a pH range of 4 to 10, air velocity in the range of 0.7 to 2.1 c...
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| Autores principales: | , |
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| Formato: | Artículo |
| Lenguaje: | español |
| Publicado: |
2008
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| Materias: | |
| Acceso en línea: | https://dialnet.unirioja.es/servlet/oaiart?codigo=9821445 |
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| Sumario: | constant of four Colombian bituminous coal samples: Cerrejón K60 (Guajira), Nechí M1 (Antioquia), La Jagua 15 (Cesar) y Guachinte (Valle del Cauca). A flotation column of 5 m was used for all the runs. The samples were processed in a pH range of 4 to 10, air velocity in the range of 0.7 to 2.1 cm / s and frother concentration in the range of 2 to 6 ml of frother / kg of coal, respectively. The Jagua and Cerrejón coals showed high values of the kinetic constant using acid conditions. However, the largest value of the kinetic constant for Cerrejón coal (0.43 min-1) was reached at pH 7. On the contrary, Nechí and Guachinte coals exhibited high values of the kinetic constant at basic conditions. Nonetheless, as it happened with Cerrejón coal, the largest value of the kinetic constant for Nechí coal (0.36 min-1) was reached at pH 7. |
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