Technical difficulties and solutions in the recycling of waste circuit boards

With the acceleration of the update speed of electronic products, the number of discarded printed circuit boards (PCB), the main component of electronic waste, is also increasing. Although waste circuit boards contain some toxic substances, at the same time, some rare precious metals such as copper, gold, aluminum, silicon etc. are contained in the circuit boards, which have high recycling value and economic benefits. According to statistics, 250-300 grams of gold, 0.7-1.5 kilograms of silver, and 120-150 kilograms of copper can be separated from one ton of waste circuit boards. The metal grade is equivalent to dozens of times that of ordinary minerals. It can be said that waste circuit boards is a real "Mine" waiting to be mined.

However, the recycling of waste circuit boards is not easy, and there are many technical difficulties. In response to various difficulties, Henan Doing Environmental Protection Technology Co., Ltd has improved its technology and designed a PCB board recycling machine. What technical difficulties does Henan Doing Environmental Protection Technology Co., Ltd's PCB board recycling machine solve? Let's take a look!

PCB board recycling machine

1. Increase the separation rate of metal and non-metal to over 99%

There are many ways to recycle waste circuit boards, such as fire burning, chemical dissolution, etc. These methods can realize the separation of metal and resin fiber from waste circuit boards. However, although they can separate metals and resin fiber, at the same time, metals and non-metal adhesion will occur, so the separation rate of metals and resin fiber will be greatly reduced. And the overall recovery rate of waste circuit boards will also be reduced.

Henan Doing Environmental Protection Technology Co., Ltd's PCB board recycling machine adopts dry physical separation method, which will not use fire or chemicals in the whole process, and will not damage waste circuit boards. Therefore, the recovery rate can reach 99.9%, and it is equipped with electrostatic separator, which can separate the metals and resin fiber in a closed magnetic field by using the different electrical conductivity between the metals and the resin fiber, and the separation rate can reach 99%.

Metals and non-metals separated by recycling machine

2. Guarantee the quality of metals and non-metals and increase the sales price of products

Although fire burning and chemical dissolution methods can achieve the separation of metals and resin fiber, while fire and corrosive chemicals will destroy the quality of the metal, and the price of the metal will therefore decrease, which will ultimately lead to economic benefits reduce.

The PCB board recycling machine of Henan Doing Environmental Protection Technology Co., Ltd uses an electrostatic separator to separate metals and resin fiber through the process of crushing and separation. The quality of metals and resin fiber will not be damaged at all, and the separated metal can be sold directly to metal trading market or purification plant, and the separated resin fiber can also be directly sold as raw materials of outdoor benches and flooring, or as filler for wood-plastic products, and the common economic benefit of metal and resin powder greatly improve economic efficiency.

Pulse dust removal system

3. Ensure the cleanliness of the working environment and reduce dust pollution

Due to the dust carried by the waste circuit board itself, it will inevitably cause pollution of the working environment during the process. If people stay in the dusty environment for a long time, it is easy to cause various respiratory inflammations and endanger human health.

Henan Doing Environmental Protection Technology Co., Ltd's PCB board recycling machine adopts a fully enclosed pipeline transportation method, the dust will not leak. And it is equipped with a pulse dust removal system to collect dust in the process, which not only protects the health of workers, but also protects the environment, meeting the requirements of environmental protection.

Henan Doing Environmental Protection Technology Co., Ltd is dedicated to technology and service. Using Doing's PCB board recycling machine can not only effectively separate metals and non-metals, but also ensure the quality of metals and non-metals, which has become a more effective solution for processing waste circuit boards.