Extracting Gold from Circuit Boards: A Comprehensive Guide

It is understood that in addition to containing 30% inert oxide and 30% plastic, the circuit board also contains 40% metal, and there is 0.1% gold in the metal content.

In addition, the amount of gold contained in different types of waste circuit boards is different, of which the gold content of the computer board accounts for 0.1% of the metal content of the waste circuit board, the TV set accounts for 0.2%, and the most gold content in the waste circuit board is the mobile phone.

A ton of waste mobile phone circuit board can extract 0.034g gold, 0.34g silver, 25 grams of copper and other metals, and a ton of ore can only extract 20g gold, which shows that the gold content extracted in the waste circuit is still quite large, then how to extract the gold in the circuit board?

Circuit board how to turn waste into treasure
At present, the circuit board recycling equipment is a good metal separation equipment, which can separate the metal and non-metallic substances in the circuit board, and then extract gold.

Board recovery equipment
Process flow:

First of all, there are many electronic components on the circuit board. First, the electronic components dismantling machine is used to disassemble the electronic components on the waste circuit board. The disassembled electronic components can be sold twice to realize the recycling of resources.

Then put the waste circuit board into the crusher for crushing, the metal and resin mixed crushing, in order to avoid the metal and resin powder is not enough broken, we specially added a rotary vibrating screen in the equipment, grinding and screening, the broken material is not fully separated will be broken twice;

After ensuring that all the metal and resin powder are broken, the air gravity separator in the circuit board recovery equipment is sorted to obtain a high purity metal recovery effect.

Board separation process
The metal extracted from the waste circuit board can also be extracted from copper by electrolysis, and then through chemical soaking method, gold can be separated from other non-metallic substances and then extracted from gold, but the manpower and funds invested in refining gold are far more than the value of the extracted gold, and will produce secondary pollution, under the national environmental protection policy, through chemical refining of gold is not approved.

Therefore, if you want to obtain profits by separating the metal in the waste circuit board, it is recommended to start from the dry physical separation of metal and non-metal, because the copper content in the waste circuit board is very large, and the market value is very good, you can sell the separated copper to the metal processing plant or sell it directly through the waste circuit board recycling equipment. Non-metallic glass fiber and tree fat powder can also be sold, used as additives and filling materials, etc., to achieve low input and high yield, and profits are often considerable.