The BATINTREC process for reclaiming used batteries.

Area of Science:

• Environmental Science
• Materials Science
• Chemical Engineering

Background:

• Battery recycling is crucial for managing electronic waste and recovering valuable materials.
• Traditional methods often struggle with efficient recovery of diverse heavy metals and can generate significant effluent.
• The Integrated Battery Recycling (BATINTREC) process offers a novel approach to address these challenges.

Purpose of the Study:

• To introduce and evaluate the Integrated Battery Recycling (BATINTREC) process for used batteries and electronic waste.
• To detail the combined vacuum metallurgical reprocessing and ferrite synthesis techniques.
• To assess the environmental impact and resource recovery potential of the BATINTREC process.

Main Methods:

• The BATINTREC process integrates vacuum metallurgical reprocessing for mercury (Hg) and cadmium (Cd) recovery.
• A subsequent ferrite synthesis process in the liquid phase reclaims other heavy metals.
• Effluent recycling is employed to minimize discharge, with specific ratios optimized for compliance with Chinese wastewater standards.

Main Results:

• Vacuum metallurgy successfully reclaims mercury from dry batteries and cadmium from Ni-Cd batteries.
• Ferrite synthesis effectively recovers other heavy metals, producing manganese oxide and carbon black mixtures.
• Optimizing the ratio of crushed battery scrap to FeSO4.7H2O at 1:6 ensures effluent heavy metal content meets Chinese discharge standards.

Conclusions:

• The BATINTREC process provides an innovative and efficient solution for recycling batteries and electronic waste.
• It effectively stabilizes heavy metals while recovering valuable resources.
• The integrated approach significantly minimizes environmental discharge, promoting sustainable waste management.