Production of sulfuric acid from pyrite: Issues related to mercury content in the final acid
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Acid production from pyrite: roasting + waste heat boiler + cyclone + electrostatic dust removal + washing for purification + electrostatic demisting + two rotors and two absorbers. What is the form of mercury in the finished acid? Source? How to remove it?
In the finished acid, mercury exists mainly in a dissolved state. The source may be mercury impurities present in the raw material pyrite, or mercury contamination from the equipment and materials used in the production process. Removal methods can include chemical precipitation, activated carbon adsorption, or ion exchange. .
This post was last edited by qugd on 2024-4-11 at 15:48. The mercury content in the resulting concentrated sulfuric acid, produced by the roasting of pyrite to produce sulfuric acid, is closely related to the composition of the pyrite feedstock. In finished sulfuric acid, mercury exists primarily in the form of mercuric bisulfate (dihydrogen mercuric sulfate), as in a strong acidic environment sulfuric acid only undergoes first-order ionization. The mercury content in sulfuric acid is a quality control indicator for high-quality sulfuric acid. Removing mercury from sulfuric acid that has already been produced is a very difficult task; it is not feasible from a technical standpoint. Generally, corresponding methods are used for mercury removal in the purification stage of the acidic gases after calcination. There are already a considerable number of specialized technologies and mature processes available.
To achieve purification, mercury removal facilities need to be added; you can contact Director Qu of Yuanda at 18873309860.
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