How to remove precious metals from circuit boards?

Do you know the precious metals can be separated from the waste circuit boards like computer, TV, mobile phones? Do you know the way to remove precious metals from circuit boards? Henan Doing, as a company with over 13 years of experience in manufacturing recycling machine, will introduce you to three main recycling methods: burning, chemical solution and mechanical separation.

Remove precious metals from circuit boards through burning:

1. Break the circuit boards into small pieces and put them into a metal container;

2. Then set them on fire until they're almost charred;

3. Let the pieces cool down a bit, but not too cold because the plastic can harden again.

4. Break the non-metals attached to the metal parts and finish separating them manually.

Remove precious metals from circuit boards through chemical solution:

1. Break the circuit boards into small pieces, and place the broken pieces into a glass container;

2. Pour acidic solutions, such as nitric acid, hydrochloric acid, etc., into the glass container the small pieces inside, and stir the mixture;

3. After a while, some materials will melt, and strain the acidic solutions from the mix using the filter;

4. Take out the things that aren't melted, and you will get the precious metals from circuit boards.

Remove precious metals from circuit boards through mechanical separation:

1. Shred/Crush the circuit boards into small pieces with shredder or crusher;

2. Control the size of pieces by using an eddy-vibrating screen - the bigger pieces will be sent back to crusher for further crushing;

3. Separate metals from non-metals through air separator according to their different gravity;

4. For the gravity of some metals is similar with that of non-metals, electrostatic separator can separate the fine metals from those non-metals according to the different conductivity.

Waste circuit board recycling machine

Henan Doing is a professional waste circuit board recycling machinery manufacturer, whose waste circuit board recycling machine has the advantages of 99% separating rate, environmental friendly, long use life, energy saving, small footprint, etc.

If you want to remove precious metals from circuit boards and have interested in our waste circuit board recycling machine, welcome to contact us. We have an independent factory, and you are welcome to bring materials for testing and inspection at any time.