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Title: The kinetics of zinc silicate leaching in sodium hydroxide.
Authors: Santos, Fabiano Mariel Fernandes dos
Pina, Pablo dos Santos
Porcaro, Rodrigo Rangel
Oliveira, Víctor de Andrade Alvarenga
Silva, Carlos Antônio da
Leão, Versiane Albis
Keywords: Zinc silicate
Sodium hydroxide
Leaching kinetics
Shrinking particle model
Chemical control
Issue Date: 2010
Citation: SANTOS, F. M. F. et al. The kinetics of zinc silicate leaching in sodium hydroxide. Hydrometallurgy, v. 102, n. 1-4, p. 43-49, abr. 2010. Disponível em: <>. Acesso em: 02 ago. 2012.
Abstract: The alkaline leaching kinetics of a zinc silicate ore assaying 34.1% Zn, 11.1% Fe and 22.9% SiO2 is studied in sodium hydroxide solutions. Speciation diagrams indicate zinc dissolution as [Zn(OH)4]2− and SEM analysis showed a progressive reduction in particle size during leaching which supports the shrinking particle model. The process is chemically controlled with an activation energy of 67.8±9.0 kJ/mol and reaction order with respect to NaOH determined as 1.44±0.46.
ISSN: 0304386X
metadata.dc.rights.license: O periódico Hydrometallurgy concede permissão para depósito do artigo no Repositório Institucional da UFOP. Número da licença: 3337021029066.
Appears in Collections:DEMET - Artigos publicados em periódicos

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