What to do with old circuit boards?

At present, incineration method, chemical method, physical method and so on are commonly used to dispose of the old circuit boards in the world.

No matter big and small electronic products will involve the circuit boards, the electronic products to be eliminated, so the old circuit board is bound to cause serious pollution to our environment, if not properly handled, not only cause huge loss of useful resources and will produce serious harm to environment and human health. At present, electronic waste has become the focus of the world, almost all countries are facing a very difficult problem - the recycling and utilization of old circuit boards.

The incineration method is to break up the old circuit boards to a certain particle size and send it to an incinerator for burning. The residue after incineration is the bare metal or its oxide and glass fiber, which can be recovered by physical and chemical methods after being crushed. The organic component of the gas into the secondary incinerator combustion treatment after emissions. The disadvantage of this method is that it produces a lot of waste gas and toxic substances.

Burnning old circuit boards

The chemical method is a process of extracting various components of the old circuit boards according to their chemical stability.

Physical method is the use of mechanical means and the old circuit boards physical properties of the different methods to achieve recovery.

First is broken. Broken purpose is to make the old circuit boards in the metal and organic matter as far as possible, in order to improve the separation efficiency. It is found that when the metal is broken at 0.6mm, the metal can basically reach 100% dissociation, but the choice of crushing mode and series depends on the subsequent process.

Then separation. Separation is the use of material density, particle size, electrical conductivity, magnetic conductivity and surface properties of physical properties of the difference to achieve separation. At present, there are widely used technologies such as pneumatic table, flotation separation, cyclone separation, floatation separation and eddy separation.

Old circuit boards

PCB board recycling machine produced by DOING company is to use physical methods to mechanically crush the waste circuit boards, sort and recycle the crushed metal and non-metal mixture. PCB board recycling machine is very environmentally. The whole process of PCB board recycling machine will not cause any pollution to water, soil, air, etc.

PCB board recycling machine

The old circuit boards are precious resource. Recycling the metal of old circuit boards by PCB board recycling machine can not only protect the environment and prevent pollution, but also be conducive to the recycling of resources, saving a lot of energy and promoting the sustainable development of the economy and society.