Small amounts of precious metals are commonly used on circuit boards.
Circuit boards and other common computer parts contain a small amount of gold and other precious metals. If you have the time and equipment, separating these metals from circuit boards can become a very lucrative venture. The process of separating metals from these boards involve the use of caustic chemicals, a detail that may make some people uneasy about recycling circuit boards. In most cases, there are no problems as long as you wear the proper safety equipment.
Instructions
1. Pour the jar of circuit board stripping powder into the one-gallon container. Dilute the powder with enough water to create one gallon of solution.
2. Lower the circuit boards into the solution bath. Allow the boards to soak in the solution for 6 to 8 hours.
3. Remove the circuit boards from the solution bath. Rinse the wrinkled gold flakes into another container.
4. Recover the gold flakes by filtering the rinse water with a kitchen strainer. Dry the flakes, and then melt and refine them as normal.
Tags: circuit boards, circuit boards, gold flakes, metals from, precious metals, solution bath