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precious metal raw materials refining methods

     

For different precious metal raw materials, there are different refining methods. Here are some common methods:

Acidic leaching method: Use an acidic medium to dissolve the metal, then use a reducing agent to reduce it into a metallic precipitate.

Cyanide extraction method: Use cyanide compounds to reduce metal ions into metallic precipitates.

Oxidation-reduction method: Use oxidation-reduction reactions to reduce metal ions into metallic precipitates.

Solvent leaching method: Use organic solvents to extract the metal.

Roasting method: Heat the raw material containing the metal to a certain temperature, converting the metal oxide into metal.

In summary, different raw materials require different refining methods and need to be chosen based on actual conditions.

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