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Wet leaching of precious metals: The essence of wet leaching technology is to directly dissolve aluminum group metals from a carrier using hydrochloric acid and a strong oxidant or other special chemical reagents (such as cyanide), and then further enrich and extract platinum group metal products from a low-concentration bath.

Plasma arc melting, using a plasma arc as a heat source, is a highly efficient pyrometallurgical technique. It has applications in machinery, metallurgy, and aerospace, and is particularly suitable for producing high-melting-point metals and special functional alloy materials and devices.

The ferroalloy phase is remelted and spray-dried into powder using standard equipment under an inert atmosphere, and then leached with dilute sulfuric acid at room temperature; the leaching reaction is very rapid.

Based on extensive practical experience from numerous manufacturers, the following advantages have been identified: environmentally friendly, labor-saving, time-saving, energy-efficient, and ensuring stable technical parameters.

The residue-free silver electrolytic cell is identical in appearance to the 300 kg vertical silver electrolytic cell. It allows the residual electrodes from silver electrolysis to be cut into small pieces and directly placed into the titanium blue anode of the residue-free electrolytic cell for electrolysis to produce.

Disadvantages of multi-cell series vertical silver electrolytic cells: Loose cell structure, requiring a large floor space for the same output.
Cell design is not conducive to closed production, resulting in flue gas overflow and a poor working environment.

Iron is the main impurity element in precious metal solutions. Removing iron using techniques such as hydrolysis, ion exchange, and extraction may cause secondary dispersion of platinum group metals.

Dissolving precious metal concentrates using HCl + Cl₂ (known as the “aqueous solution chlorination method”) is a common technique in precious metal metallurgy. After grinding spent catalysts, oxidants such as NaClO, NaClO, and H₂O₂ are added to a hydrochloric acid medium, or Cl₂ gas is introduced.

Hydrometallurgical extraction of precious metals: The essence of hydrometallurgical technology is to directly dissolve aluminum group metals from a carrier using hydrochloric acid and a strong oxidizing agent or other special chemical reagents (such as cyanide), and then further enrich and extract platinum group metal products from a low-concentration bath.