Gold extract machine from electronic items
We all know that even a very good gold mine has a gold content of 15~20g per ton. In contrast, a ton of used mobile phones has a much higher gold content than gold ore. It can be seen that it is feasible to extract precious metals such as gold from electronic waste, which can not only improve the utilization value of electronic waste, but also avoid waste. So, how to extract precious metal gold from e-waste?
More than half of the materials in e-waste are harmful to the human body, and some are even highly toxic. A computer has more than 700 components, half of which contain various toxic chemicals such as mercury, arsenic, and chromium; electronic products such as televisions, refrigerators, and mobile phones also contain heavy metals such as lead, chromium, and mercury.
One is the incineration purification method. This method is the oldest and the purification efficiency is not very high. It is mainly used in some open-air places. However, this method has great environmental pollution. Usually, gasoline, kerosene, etc. are sprayed on waste electronic products. Combustion-supporting liquid, a large amount of waste gas will be generated during the combustion process, and the unburned waste electronic products will also produce a large amount of organic scum in addition to precious metals. Excessive precious metal lead and other harmful gases will escape into the air, causing the air to undergo a secondary process. Secondary pollution, of course, this method is currently used by fewer people.
The other method is relatively more practical. The chemical purification method mainly uses a strong acid solution to separate the precious metal in the circuit board from the silicon wafer, such as the current mainstream aqua regia method, lead-mercury method and thiourea method. This method can better extract gold, silver, copper and other precious metal elements on the circuit board. In terms of the CPU processor of a PC computer, the steps to extract gold in the CPU are actually not complicated. Pour about 40% nitric acid into the glass container, and soak the disassembled CPU in the container until the pins are completely dissolved. Gold-plated needles float in water, and after filtration, use aqua regia for secondary purification to extract the desired gold and precious metal elements. Although the precious metals of waste electronic products can be extracted by the method of strong acid liquid purification, a complete set of equipment and technology is required to efficiently and stably extract gold from electronic waste.
SUNY GROUP is a professional manufacturer of electronic waste recycling equipment. In addition to the refining and extraction of precious metals such as gold in electronic waste, it can also dismantle, crush, grind, and sort and recycle electronic waste. According to the different materials of customers, we can design a complete set of solutions in a targeted manner. If you have needs in this regard, you can contact us at any time and send you detailed videos and other materials.
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