| Revista: | Brazilian journal of chemical engineering |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000309012 |
| ISSN: | 0104-6632 |
| Autores: | Queiroz, C.A.R1 Carvalho, R.J Moura, F.J |
| Instituciones: | 1Pontificia Universidade Catolica do Rio de Janeiro, Departamento de Ciencia dos Materiais e Metalurgia, Rio de Janeiro. Brasil |
| Año: | 2005 |
| Periodo: | Mar |
| Volumen: | 22 |
| Número: | 1 |
| Paginación: | 127-133 |
| País: | Brasil |
| Idioma: | Inglés |
| Tipo de documento: | Artículo |
| Enfoque: | Experimental, aplicado |
| Resumen en inglés | The oxidation kinetics of a blend of zinc sulphide concentrates in a bench-scale fluidised bed reactor operated in batch regime was studied. The fractional conversion was determined by measuring the SO2 concentration in the exit gas using a chromatograph. The effects of the initial mass of the blend, airflow rate and temperature on fractional conversion were studied. The initial mass of the blend varied from 45 to 75 g, the airflow rate from 6 to 9 L/min and the temperature from 883 to 1213 K. The time for complete conversion was affected by the molar ratio of O2 to S fed into the reactor and by temperature. The oxidation reaction was controlled by surface chemical reaction of the unreacted core of the particles. The value of the activation energy, 87 kJ/mole, supports the contention that the reaction was chemically controlled |
| Disciplinas: | Química, Ingeniería |
| Palabras clave: | Ingeniería metalúrgica, Ingeniería química, Sulfuro de zinc, Oxidación, Lecho fluidizado, Cinética química |
| Keyword: | Chemistry, Engineering, Chemical engineering, Metallurgical engineering, Zinc sulphide, Oxidation, Fluidized bed, Chemical kinetics |
| Texto completo: | Texto completo (Ver HTML) |
