In the process of tungsten ore extraction, the commonly used strong acids include the following:
Hydrochloric acid (HCl)
Hydrochloric acid plays a role in dissolving tungsten ore in tungsten ore extraction, especially in the hydrochloric acid-phosphoric acid pressure decomposition method, the ratio of hydrochloric acid and phosphoric acid is mixed to decompose tungsten ore.
Hydrochloric acid has a strong decomposition ability, especially when heated, it can quickly dissolve tungsten ore.
Phosphoric acid (H₃PO₄)
Phosphoric acid not only plays a role in dissolving tungsten ore in tungsten ore extraction, but also plays a role in regulating the reaction rate and generating stabilizers.
The combination of phosphoric acid and hydrochloric acid can effectively extract tungsten in the pressure decomposition method.
Sulfuric acid (H₂SO₄)
Although sulfuric acid is rarely used in tungsten ore extraction, it is also considered to be an inorganic acid that may have the ability to decompose tungsten ore in the acid dissolution method.
Sulfuric acid may be used in the pretreatment or subsequent treatment steps of tungsten ore in certain specific processes.
Nitric acid (HNO₃)
As a type of inorganic acid, nitric acid is sometimes used in the acid dissolution method.
Nitric acid may be used in the extraction or treatment of tungsten ore under certain special processes or conditions.
In the process of tungsten ore extraction, hydrochloric acid and phosphoric acid are commonly used strong acids, which effectively extract tungsten by methods such as pressurized decomposition. Although sulfuric acid and nitric acid are not discussed in detail in the reference article, they are also considered to have the ability to decompose tungsten ore in theory and may be used in certain specific processes. The application of these strong acids in tungsten ore extraction needs to be selected and optimized according to the specific ore properties, process conditions and environmental requirements.
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