The process of extracting gold from waste circuit boards is complicated and has great environmental pressure. The following are the basic steps and precautions for extracting gold:
Use aqua regia to corrode gold:
First, aqua regia is needed to corrode the gold in the circuit board.
Although this step seems simple, it requires extremely high technical level and strict safety measures in actual operation to avoid harm to the operator.
Electrolytic extraction of gold:
After the gold is corroded by aqua regia, the gold is extracted from the solution by electrolysis.
The electrolysis process requires precise control of current and voltage to ensure the effective extraction of gold.
Treatment of waste liquid:
Difficulty: The waste liquid generated during the refining process is extremely corrosive and difficult to properly handle.
Importance: If the waste liquid is directly discharged without proper treatment, it will cause serious pollution to the environment.
Solution: It is necessary to explore more environmentally friendly and economical waste liquid treatment technologies, such as using neutralizers, precipitants and other methods to reduce the corrosiveness of the waste liquid, and then safely discharge or further treat it.
Balance between environmental protection and economy:
In the process of refining gold, not only the recovery value of gold should be considered, but also the environmental protection cost should be fully considered.
It is necessary to ensure that the environment will not be harmed while pursuing the value of gold recovery.
Technological improvement and innovation:
Given the complexity and environmental pressure of gold refining, it is necessary to continuously explore and improve refining technology.
Introduce more advanced refining equipment and processes to improve refining efficiency and environmental performance.
In summary, refining gold from waste circuit boards is a job with high technical requirements and high environmental pressure. In actual operation, it is necessary to strictly follow safety regulations and environmental protection requirements to ensure the safety and environmental protection of the refining process. At the same time, it is also necessary to continuously explore and improve refining technology to achieve a balance between gold recovery and environmental protection.
