With the rapid iteration of electronic products worldwide, the amount of e-waste generated annually has surged. This waste is rich in precious metals such as gold, silver, palladium, and copper, with grades far exceeding those of natural ores, thus earning it the moniker of “urban mines.” However, traditional recycling methods, such as incineration or strong acid leaching, are inefficient and severely pollute the environment. Developing efficient, environmentally friendly, and precise recycling technologies is crucial to meeting the demands of sustainable development and the circular economy.
Our E Waste Gold Recovery Machine is a specialized device for recovering precious metals from gold-plated materials in electronic waste. Its core advantages lie in its high efficiency and selective stripping, capable of dissolving the gold plating layer within seconds to minutes, achieving rapid gold recovery.
This gold stripping system is primarily suitable for various waste electronic materials containing gold or silver plating, including:
Discarded computer circuit boards, such as CPUs, memory modules, and graphics cards.
Various connectors, plugs, and pins.
Gold/silver-plated circuit boards (PCBs).
Other electronic components or waste materials are plated with precious metals.
The main recovery process of this system can be summarized into the following key steps:
Pre-treatment: Firstly, materials containing gold plating, such as discarded E-Waste CPUs, are collected and pre-treated.
Adding Stripping Chemical: The pre-treated gold-plated materials are placed into the equipment, and specific Stripping Chemicals are added.
Chemical Deplating: Inside the equipment, the stripping agent reacts rapidly with the gold layer, efficiently dissolving precious metals like gold or silver from the substrate surface. The image indicates a stripping speed of $0.5-2.0$ mm/min (this likely refers to the efficiency of the stripping process per unit time, as the thickness of plating is usually in micrometers).
Leaching, Precipitation & Filtration: The stripped solution contains dissolved precious metal ions. Through the subsequent steps of leaching, precipitation, and filtration, the gold ions in the solution are reduced and separated to form a gold precipitate.
Smelting: Finally, the collected gold precipitate is processed through smelting to obtain high-purity recycled gold.
Washing: The residual materials are subjected to washing to ensure maximum recovery rate and for subsequent handling.
This system demonstrates significant advantages in efficiency, environmental friendliness, and recovery rate:
High efficiency and speed: It can rapidly strip the gold layer within seconds to minutes, greatly shortening the recovery cycle.
High purity and separation precision: The recovery efficiency is high; gold can be completely separated from the substrate (such as nickel or tin layers). Images show a separation rate of up to 99%, and the recovered gold is of high purity.
Green and environmentally friendly: The stripping agent used is free of cyanide and highly toxic, meeting increasingly stringent environmental requirements.
High selectivity: The stripping process does not contaminate the underlying substrate (such as nickel or tin layers) (No stain), ensuring the purity of the recovered gold and facilitating subsequent recycling of the substrate.
We provide on-site support to 30+ customers, lifetime technical support, detailed technical training, and on-site installation services to ensure the normal operation of the equipment.
If you have any requirement or suggestion, please fill in the form and send to us, thanks!E-mail:sunymachine@gmail.com | Whatsapp:+8613674945231
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