Process Overview

Antimony electrolytic refining is a highly efficient purification method based on electrochemical principles. Crude antimony plates serve as the anode; electrolysis is conducted in a specialized electrolyte to separate antimony from impurities.

Key Steps

1. Anodic Dissolution

The antimony anode undergoes electrochemical dissolution in the electrolyte, releasing antimony ions into the solution. Due to differences in electrode potential, precious metals such as silver and gold do not dissolve; instead, they concentrate in the anode slime, from which they can be recovered.

2. Cathodic Deposition

Antimony ions gain electrons at the cathode and are reduced to form high-purity cathode antimony, characterized by a dense structure and extremely low impurity content.

3. Melting and Casting

The cathode antimony undergoes melting and casting to produce high-purity antimony ingots that meet industrial standards.

Process Advantages

Selective Separation: Antimony is automatically separated from silver and gold.

Resource Recovery: Precious metals can be extracted from the anode slime, enhancing added value.

Environmentally Friendly and Controllable: The electrolyte can be recycled.

Application Value

High-purity antimony ingots are widely used in fields such as flame retardants, alloys, and semiconductors, making them a vital strategic metal material.