The silver purification equipment uses 925 metallic silver as the anode and titanium as the cathode. Under the action of the electrolyte, silver ions dissolved in the electrolyte are electrodeposited on the cathode to form 99.99% metallic silver. This process replaces the traditional method of extracting pure silver with nitric acid, reducing the emission and usage of nitric acid; This device can be customized according to customer production capacity and has advantages such as simple and convenient operation.

Silver electrolytic purification machineIt is a device that uses the principle of electrolysis to extract high-purity silver from crude silver or silver containing waste. Its core technology is based on the electrochemical process of anodic dissolution and cathodic deposition, which can increase the purity of silver to above 99.95% -99.99%. The following provides a detailed introduction from the aspects of working principle, equipment structure, technical parameters, application scenarios, and advantages:

Core principles and technical details

1. Electrolysis process

   Using coarse silver (purity ≥ 90%) as the anode, titanium or stainless steel plate as the cathode, and silver nitrate solution (containing 100-150g/L silver and 2-8g/L nitric acid) as the electrolyte. After being powered on, the anodic silver oxide dissolves into Ag ⁺ and enters the solution, while the Ag ⁺ in the solution is reduced and deposited into pure silver at the cathode. Impurities with a higher potential than silver, such as gold and platinum, do not dissolve and form anode sludge; Metals with lower potentials than silver, such as copper and lead, dissolve but are difficult to precipitate at the cathode, thus achieving the purification of silver.