一种棕化液和化铜液混合后铜资源回收处理方法
By combining evaporation concentration with pyrometallurgical processes, the problems of environmental compliance pressure and low resource recovery efficiency in the treatment of copper-containing waste liquid from PCBs have been solved. This has enabled the efficient recovery of copper resources and the recycling of water resources, reduced operating costs, and made the process adaptable to different treatment scales and composition fluctuations, thus meeting the requirements of green development.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DONGGUAN DONGYUAN ENVIRONMENTAL TECH CO LTD
- Filing Date
- 2026-06-18
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies for treating copper-containing waste liquid from PCBs face challenges such as high environmental compliance requirements, low resource recycling efficiency, and high operating costs, making it difficult to simultaneously meet the requirements of volume reduction, harmlessness, and resource recovery.
An integrated process combining evaporation concentration and pyrometallurgical smelting is adopted. Solid-liquid separation is achieved through low-temperature multi-effect evaporation to obtain reusable condensate and dried copper-containing sludge. Subsequent matte smelting, converter blowing, anode furnace refining and electrolytic refining are carried out to obtain high-purity cathode copper.
It achieves full-process resource utilization and zero discharge of copper-containing waste liquid from PCBs, improves the comprehensive utilization rate of copper resources, reduces operating costs, reduces wastewater discharge, avoids secondary pollution, and has significant economic value and application prospects.
Smart Images
Figure CN122405992A_ABST