一种废旧线路板回收稀贵金属的工艺
By employing a three-step sorting process and a nanoscale synergistic mechanism of magnetic nanocomposite catalyst-complexing agent, the problem of efficient and highly selective synergistic recycling of various rare and precious metals in waste circuit boards has been solved, achieving efficient, low-cost, and environmentally friendly metal recycling results.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- HUBEI ZHONGYUAN CHUCHENG ENVIRONMENTAL PROTECTION TECH CO LTD
- Filing Date
- 2026-04-28
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient to achieve efficient and selective synergistic recycling of multiple rare and precious metals from waste circuit boards. Pyrometallurgical processes are energy-intensive and polluting, physical sorting is ineffective, hydrometallurgy poses cross-contamination and environmental risks, and traditional processes are cumbersome and costly.
A three-step sorting process is adopted, which utilizes magnetic nanocomposite catalyst-complexing agent for leaching under ultrasonic field and electrochemical oxidation assistance. Combined with alkaline leaching and thiosulfate gold leaching system, the efficient separation and recovery of metals are achieved through precise step sequencing and nanoscale synergistic mechanism.
It achieves efficient and highly selective recovery of metals such as tin, copper, nickel, zinc, aluminum, gold, and silver, with simplified processes, reduced costs, environmental friendliness, and significantly improved metal recovery rate and purity.
Smart Images
Figure CN122105126B_ABST