Each ton of waste circuit boards contains up to 30% base metals and 0.4% precious metals, with copper, gold, silver, and palladium being particularly valuable. Improper disposal of this discarded electronic waste will severely pollute soil and groundwater; however, scientific recycling transforms it into a "mobile gold mine"!
Currently, the copper extraction process from circuit boards employs an integrated "leaching-extraction-electrowinning" solution. The specific process involves first leaching the copper-containing material in a reactor, followed by filtration and then the core extraction stage. The extraction system uses a 1:1 ratio of tributyl phosphate and sulfonated kerosene, which efficiently captures copper ions.
The CWL-M new centrifugal extractor launched by Zhengzhou Tiei Extraction Technology Co., Ltd. is a commonly used equipment in this process. This centrifugal extractor achieves rapid mixing and precise separation of liquid and liquid phases with its powerful centrifugal force. It not only has a short stage retention time and rapid phase separation, but also adapts to a wider range of flow ratios. By changing the weir plates and using variable frequency speed control, it can flexibly handle materials of different densities and viscosities, replacing traditional chamber and column extraction equipment.
The CWL-M centrifugal extractor not only achieves efficient copper extraction but can also be applied to the recovery of precious metals such as gold and silver. Its fully enclosed design ensures a clean and safe production environment, while automated operation significantly reduces labor costs, enabling the resource utilization of electronic waste to truly achieve a win-win situation for both economic and environmental benefits.
This technology has been successfully applied in several electronic waste recycling projects in China, with a single production line capable of recovering thousands of tons of copper annually.
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Email: sales@tieiextraction.com
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