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Topic: sulfuric acid  (Read 3311 times)

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Offline fran008

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sulfuric acid
« on: November 14, 2005, 04:07:53 PM »
Many metals are mined as sulfides. the process of extraction involves roasting the metal in air, with the production of an exhaust gas containing a high concentration of sulfer dioxide. This pollutant can be removed by converting it to sulfuric acid.

In the extraction of metals from sulfides, what is the advantage of converting sulfer dioxide in sulfuric acid rather than into calcium sulfate, as happens in other processes


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Re:sulfuric acid
« Reply #1 on: November 15, 2005, 04:46:20 AM »
Sulphuric acid is commercially much more important than calcium sulphate.


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Re:sulfuric acid
« Reply #2 on: February 06, 2006, 01:37:20 PM »
I think this depend of the production process objectives. Probably the company set this objectives based in an market, costs and production possibilities analysis, taking care of environmental costs too (this is the correct way). If it is necessary, is possible to swich the process to obtain one or the other final products (I think you jut need one reactor, temperature control and a mixing system). One important point is the amount of sludges and wastes generated with each process. If you has so much Ca(2+) you must think wath to do with it.

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