Method and equipment for extracting precious metals from electronic waste
E-waste is one of the unavoidable problems in today's society. With the rapid development of science and technology, people's demand for electronic products is increasing, resulting in a large amount of waste electronic equipment. However, e-waste contains abundant precious metal resources, such as gold, silver, copper, etc. Therefore, the development of efficient precious metal extraction methods and equipment is crucial for environmental protection and resource recovery.
1. Current status of e-waste
The amount of e-waste shows an alarming growth trend. According to statistics, more than 50 million tons of e-waste are generated globally every year. These discarded electronic devices include mobile phones, computers, televisions, etc., most of which are discarded in landfills or processed illegally, causing serious harm to the environment and human health. At the same time, precious metal resources in e-waste are wasted, posing challenges to sustainable development.
Precious Metal
2. Precious metal extraction method
Physical separation method: The physical separation method is to separate the precious metals in electronic waste from other impurities by mechanical and physical means. This includes processes such as crushing, screening, magnetic separation and gravity separation. Through these steps, precious metals in waste electronic equipment can be physically separated, reducing environmental pollution.
Chemical extraction methods: Chemical extraction methods use chemical reactions to extract precious metals from e-waste. Among them, the most commonly used methods are acid leaching and solvent extraction. The acid leaching method is to soak electronic waste in an acidic solution to dissolve precious metals, and then separate them out by electrolysis or other methods. The solvent extraction method is to use an organic solvent to extract noble metal ions, and then obtain pure noble metals through steps such as reduction and precipitation.
Precious metal refining equipment
3. Precious metal extraction equipment
Acid leaching equipment: acid leaching equipment mainly includes acid leaching tank, acid circulation system, reaction tank, etc. The acid leaching tank is used to fully contact the electronic waste with the acidic solution to realize the dissolution of precious metals. The acid circulation system is used to recycle and reuse acid to reduce the waste of resources.
Solvent extraction equipment: Solvent extraction equipment is composed of solvent extraction tower, extract liquid circulation system and precious metal precipitation device. Solvent extraction towers are used to extract precious metal ions in electronic waste from acidic solutions. The extraction liquid circulation system is used to recover and reuse the solvent, improving economic efficiency and environmental friendliness.
Precious metal extraction equipment
4. Advantages of precious metal extraction
Resource recovery: Extracting precious metals from e-waste can effectively recover resources and reduce dependence on primary precious metal ores. This helps to protect the natural environment and reduce the pressure on the exploitation of mineral resources.
Environmental protection: In the process of extracting precious metals, rational disposal of electronic waste can reduce environmental pollution. By adopting efficient extraction methods and equipment, the discharge of harmful substances can be minimized and the health of the ecosystem can be protected.
Economic benefits: The extraction and recovery of precious metals can bring considerable economic benefits. Precious metals are widely used in electronic product manufacturing and other industrial fields, and the recovered precious metals can be reused to reduce production costs.
The extraction of precious metals from e-waste is a task of great significance. After years of research and development, SUNY GROUP has a complete set of precious metal extraction equipment and solutions. By using methods such as physical separation and chemical extraction, combined with corresponding equipment, precious metal resources can be efficiently recovered from electronic waste, and at the same time, it can also be used for early-stage electronic waste. Circuit board dismantling, crushing and sorting, etc. provide effective recycling solutions. If you are interested in e-waste recycling, please feel free to contact us for consultation.
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