Method for extracting precious metals such as gold from waste circuit boards
In the recycling process of waste circuit boards, the refining and extraction of precious metals such as gold is an important part, so how to effectively recycle precious metals from waste circuit boards?
1. Traditional chemical solvent method:
Using the chemical properties, put the solvent into the water to soak the waste circuit board, then heat the added chemical solution at 100-200 ℃, and leave it for about 1-2 hours. You can see the golden elements floating at the bottom of the container, which is the extracted gold. , The method of chemical solvent extraction of gold, the processing capacity is relatively small, the efficiency is relatively low, it is easy to produce waste water and waste gas to pollute the environment, and it will also cause the loss of some metals and the waste of non-metallic resources, which is time-consuming and labor-intensive.
Waste circuit board precious metal recycling
2. New equipment separation method:
The equipment separation method is to use the waste circuit board crushing and sorting production line for separation and extraction. The production line adopts a new dry physical separation technology to extract the metal elements in the waste circuit boards through crushing, separation and sorting, and then further extracts from it. Precious metals such as gold.
The waste circuit board crushing and sorting production line avoids the shortcomings of traditional chemical solvent separation methods. It can be used for dry crushing and sorting according to physical properties without adding water and heating during the separation process. The process will not produce waste water and waste gas to pollute the environment. In addition, the equipment is also equipped with a pulse dust removal device. When the circuit board recycling equipment is processing waste cables, it can achieve fully enclosed operation without any dust leakage. It is an environmentally friendly precious metal metal purification equipment.
In the process of extracting gold from waste circuit boards through circuit board recycling equipment, other non-ferrous metal substances, such as silver, copper, aluminum, etc., can also be obtained. The quality of the obtained metals will not be damaged, and the extracted Metals can be directly sold to metal processing plants to realize the secondary use of resources. In addition, non-metals - resin powder separated from waste circuit boards can also be sold and are often used as wood additives. Equipment separation and extraction of metals can effectively The realization of resource recycling and reuse will not cause waste of resources, and is more environmentally friendly than the traditional separation method, which not only saves labor costs, but also increases production.
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