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Fundacion
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Join Date: Apr 2012
Posts: 50

Exothermic Reaction Between PLS (Copper Leach) and Sulphuric Acid

04/27/2013 7:26 PM

Hi all, it is possible to find the maximum temperaure that a mixture of PLS (copper leach, pregnant leach solution) and sulphuric acid could reach?

All info is well known, such as flow and acid %

Any clue or bibliography will help so much!
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lyn
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Join Date: Oct 2008
Posts: 42355
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#1

Re: Exothermic reaction between PLS (copper leach) and Sulphuric Acid

04/27/2013 7:32 PM

Might be here, might not.

Practical Aspects of Copper Solvent Extraction from Acidic Leach ...
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Fundacion
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#2
In reply to #1

Re: Exothermic reaction between PLS (copper leach) and Sulphuric Acid

04/27/2013 7:45 PM

not there, but in Graph 2 from this document http://www.prevor.com/EN/sante/RisqueChimique/diphoterine/publications/media/Acide_sulfur_Ang_BD.pdf , a temperature graph for a water/acid micture is showed
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Baffled
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#7
In reply to #2

Re: Exothermic reaction between PLS (copper leach) and Sulphuric Acid

05/04/2013 8:51 PM

Note: water/acid micturation is cause for alarm. See your doctor.
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lyn
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Join Date: Oct 2008
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#3

Re: Exothermic reaction between PLS (copper leach) and Sulphuric Acid

04/27/2013 7:57 PM

Maybe here?

Chemical Reaction Equations

Maybe not, I really didn't mean to post this one till I had looked at it more closely.

Might be something here:

Chemists' & Chemical Engineers' Toolbox | SUL
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energyconversion
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Join Date: Aug 2008
Location: England & Ireland
Posts: 1063
Good Answers: 61
#4

Re: Exothermic Reaction Between PLS (Copper Leach) and Sulphuric Acid

04/28/2013 10:13 AM

Sounds to me that you would need to know: the enthalpy change for the reaction, the equilibrium constant for the reaction, the specific heats for all the reactants, the flow rates, the heat losses, initial temperatures and ....... Would suggest far easier to measure it!
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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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#5

Re: Exothermic Reaction Between PLS (Copper Leach) and Sulphuric Acid

04/28/2013 5:51 PM

The maximum temperature would be the boiling temperature of the liquids present, until such time as the liquids have boiled away. If the reaction stops as a result of the liquid boiling away, then the temperature will then approach ambient. If the reaction continues, then another estimate becomes due on the basis of what is left to continue the reaction.

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PWSlack
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#6

Re: Exothermic Reaction Between PLS (Copper Leach) and Sulphuric Acid

04/28/2013 6:26 PM

If in doubt, consult a qualified Chemical Engineer.

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