Titanium Anode for Recovering Copper

Titanium anodes coated with mixed metal oxides (MMO) are widely used in the recovery of valuable metals such as copper and aluminum from industrial etching solutions. These anodes provide an efficient, environmentally friendly solution for treating wastewater while enabling resource recovery.

1. Copper Recovery from Etching Liquid

Process Overview

In industries such as PCB manufacturing and metal etching, wastewater often contains dissolved copper in:

Chloride systems (alkaline wastewater)

Sulphate systems (acidic wastewater)

Or mixed electrolytes

MMO-coated titanium anodes enable the electrochemical recovery of copper, converting waste streams into reusable metal resources.

Key Advantages

High corrosion resistance
Suitable for both acidic and alkaline environments

Stable electrochemical performance
Ensures continuous and reliable operation

Low overpotential
Reduces bath voltage and energy consumption

Excellent conductivity
Improves current efficiency and recovery rate

Long service life
Minimizes maintenance and replacement costs

Environmental Benefits

Converts hazardous etching wastewater into a closed-loop recovery system

Reduces or eliminates secondary pollution

Supports energy saving and emission reduction goals

Enables resource recycling (copper reuse)

2. Aluminum Processing (Electrolytic Support System)

Application Background

In aluminum foil production-especially for electrolytic capacitor applications-a highly controlled anodizing process is required. Titanium anodes are used as auxiliary electrodes to ensure stable current distribution without direct contact with the aluminum strip.

Working Principle

Activated titanium anodes are installed in a supplementary electrolytic cell

The system introduces current into the aluminum coil without physical contact

Electrochemical reactions:

Anode: Oxygen evolution

Cathode: Hydrogen evolution

This indirect current transfer prevents:

Surface damage

Electrical discharge marks

Mechanical wear from contact rollers

Key Advantages

Non-contact current supply → protects aluminum surface quality

Uniform anodizing effect → improves product consistency

Reduced defect rate → critical for capacitor-grade aluminum foil

Enhanced process stability

Manufacturing & Service Capability

Custom-designed titanium anodes for different electrolyte systems

Optimized MMO coating formulations for specific applications

Anode recoating and regeneration services available

Compatible with various industrial electrochemical processes

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