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  • Need kinetic data for scheelite(CaWO4) and ferberite (FeWO4) dissolution
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Author Topic: Need kinetic data for scheelite(CaWO4) and ferberite (FeWO4) dissolution  (Read 2063 times)

Sidol

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  • Posts: 11
Need kinetic data for scheelite(CaWO4) and ferberite (FeWO4) dissolution
« on: 02/06/20 09:49 »
Dear Everyone!

I make an experiment where measuring the dissolution of scheelite (CaWO4) and ferberite (FeWO4) from a scheelite+ferberite+quartz powder mixture by three different leachants (distilled water, 0.1 M acetic acid, 0.1 M NaOH) at 200 °C, 250 °C and 300 °C degrees in a tube reactor.
I would like to make a kinetic model in PHREEQC to check the different processes (dissolution, precipitation, secondary phases etc.) during dissolution of scheelite and ferberite.
Does anyone information about activation energy (Ea) and pre-exponential factor (A0) for scheelite and ferberite?
Or if it they are not available, kinetic rate constants for 200, 250 and 300 °C values are also highly appreciated.

Thank You for Your help.

Krisztian
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