KINETICS OF MILLERITE DISSOLUTION IN CUPRIC CHLORIDE SOLUTIONS

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KINETICS OF MILLERITE DISSOLUTION IN CUPRIC CHLORIDE SOLUTIONS

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Title: KINETICS OF MILLERITE DISSOLUTION IN CUPRIC CHLORIDE SOLUTIONS
Author: HUBLI, RC; MUKHERJEE, TK; VENKATACHALAM, S; BAUTISTA, RG; GUPTA, CK
Abstract: Oxidation of millerite by cupric chloride in sodium chloride solutions has been studied as a function of: rate of agitation; leaching time; temperature; acid concentration; and total initial cupric concentration. The reaction has a 0.5 order of dependence on initial cupric concentration in the range 0.0-0.5 M. The activation energy for the temperature range 333-363 K was found to be 65.2 kJ/mol with chemical reaction at the mineral surface as the rate-controlling step. The rate expression, for initial cupric concentrations between 0.0 and 0.5 M, is: {1-(1-alpha)(1/3)} = {9.27 X 10(3) . [Cu(II)](0.5). r(0)(-1)exp(-7.847 X 10(3)/T)} . t according to the shrinking-core model.
URI: http://dx.doi.org/10.1016/0304-386X(94)00047-7
http://dspace.library.iitb.ac.in/xmlui/handle/10054/6714
http://hdl.handle.net/10054/6714
Date: 1995


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