High-Purity and Ultra-High-Purity Copper Explained

In 2022, we completed a 100-ton annual capacity 6N copper refining project for Zijin Group. Through precise control of the electrolysis process and optimization of electrolytic techniques, we achieved mass production of ultra-high-purity copper.

Key production measures included:

Facility Requirements:

Constructed dust-free cleanrooms for electrolysis workshops

Implemented sealed electrolytic cells

Established self-cleaning electrolyte circulation systems
These measures prevented contamination from both the production environment and electrolyte system.

Process Optimization:

Determined optimal current density parameters

Improved circulation methods to eliminate concentration polarization

Ensured high-quality cathode copper deposition

Unique Purification:

Developed specialized washing techniques

Removed residual electrolyte impurities from honeycomb structures on cathode surfaces

Prevented product quality degradation

Through comprehensive control of production environment, electrolysis processes, and purification methods, we successfully achieved stable production of 6N ultra-high-purity copper.

Technical Highlights:

Achieved 99.9999% Cu purity consistently

Established complete contamination control protocols

Implemented innovative electrolyte management

Developed proprietary cathode treatment methods

This project represents a significant advancement in China's high-purity copper production capabilities, particularly for semiconductor and advanced electronics applications.