How to Recover Gold from Chips?/Gold Recycling from Chips/Gold Recovery from Chips/ Gold Recovery from Cumputer Chips

There are numerous methods for recovering gold from chips. One method is that you first crush chips and then grind them into a fine powder. Then, using a shaking table, you can recover gold through density separation.

Another method is that you can first burn chips in the open, which will create some pollution. If you want to avoid pollution, you can burn chips in an oven or incinerator and use a scrubber that will neutralise the smoke during chip burning. Chips take some time to burn, so you should make sure that they are burned properly. Let the burnt chips cool down before proceeding further. It takes two to three hours for the burned chips to cool down.

Now put these burnt chips into a grinder for five to ten minutes to turn them into a fine powder. You can do it manually by using a mortar and pestle. Check out a sample of the ash. If it is not fine, give it a little more time in the grinder. After this step, you have to separate the pins from the ash. For this, you can use a sieve. These chips have very thin gold wires inside. The gold wires blend in with the ash, aiding in the separation of the pins. The pins also fetch you a good amount of money. So, keep them carefully, and sell them to a metal trader when they are in good quantity.

You can treat this ash with an aqua regia solution. Prepare aqua regia by combining one part nitric acid with three parts hydrochloric acid. This ash should be stirred continuously in the aqua regia solution for five to six hours. Stirring the ash manually for such a long time is not possible. So, you can use a motor, a wooden or plastic shaft, and plastic blades for this. Thus, all the gold will dissolve into aqua regia. This aqua regia solution is filtered using a filter cloth. Recover the gold with sodium metabisulfite.

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