Identification of the model and controlling step in acid liquor neutralization process at the nickel processing industry

Authors

  • Idelsa García-Ulacia Facultad de Ingeniería Química de Univerisidad de Oriente
  • María A. Fernández-Labrada Facultad de Ingeniería Química de Universidad de Oriente

Keywords:

modeling, fluid solid non-catalytic systems, neutralization, controlling step.

Abstract

The objective of the investigation was to estimate the mathematical model parameters for fluid-solid non-catalytic systems in order to describe the behavior of a sequence of continual reactors with agitation and installation in series based on the peculiarities of the existing system in the Neutralization Plant at the nickel plant site “Comandante Pedro Soto Alba” of Moa. The work included the calculation of complete reaction times for particles having invariable and decreasing sizes considering the model of center without reaction. The potential controlling steps were: external diffusion in liquid films, diffusion through product build up layers, chemical reaction in particles with invariable sizes and external diffusion in liquid films of particles with decreasing sizes. When analyzing the results, it was possible to rule out chemical reaction and diffusion in the scab as controlling steps. It was concluded that the step with higher probability of controlling the neutralization process is external diffusion.

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Author Biographies

Idelsa García-Ulacia, Facultad de Ingeniería Química de Univerisidad de Oriente

Departamento de Fundamentos Químicos Biológicos, Profesora Asistente

María A. Fernández-Labrada, Facultad de Ingeniería Química de Universidad de Oriente

Departamento de Fundamentos Químicos Biológicos, Profesora Asistente

References

DEL TORO, A. D. 2006: Modelo matemático simplificado de una secuencia de reactores de neutralización. Tecnología Química XXVI(3).

DEL TORO, A. D. 2008: Distribución de tamaños de los núcleos sin reaccionar a la salida de un reactor en un proceso fluido-sólido no catalítico. Tecnología Química XXVIII(2).

GARCÍA, I. 2006: Velocidad de reacción global en un sistema reaccionante líquido-sólido no catalítico. René Viera (Tutor). Tesis de maestría. Universidad de Oriente. 80 p.

LAFFITA, M. A. 1996: Manual de Operaciones. Planta de Neutralización. Moa. Cuba.

VIERA, B. R. 1991: Diseño y análisis de reactores químicos. T. III. Ediciones Enpes, La Habana.

VIERA, B. R. 2010a: Expresión en sistemas fluido-sólido no catalíticos, controlados por la difusión interna en partículas de tamaño fijo. Primera parte. Tecnología Química XXX(2).

VIERA, B. R. 2010b: Expresión en sistemas fluido-sólido no catalíticos, controlados por la difusión interna en partículas de tamaño fijo. Segunda parte. Tecnología Química XXX(3).

Published

2015-03-20

How to Cite

García-Ulacia, I., & Fernández-Labrada, M. A. (2015). Identification of the model and controlling step in acid liquor neutralization process at the nickel processing industry. Minería & Geología, 31(1), 80–97. Retrieved from https://revista.ismm.edu.cu/index.php/revistamg/article/view/929

Issue

Vol. 31 No. 1 (2015): Enero-Marzo

Section

Metalurgia extractiva
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