The timely handling of discarded circuit boards can reduce environmental pollution

The timely handling of discarded circuit boards can reduce environmental pollution

With the economic development and scientific and technological progress, the number of discarded circuit board products in a straight upward trend. On the one hand the environment caused great harm, on the one hand and waste valuable resources, especially precious metals. This situation has aroused great concern from governments, environmentalists and business circles around the world. Some countries and regions have taken effective measures to do a lot of work in laws and regulations, recycling systems and recycling technology research and development.

First, the incineration method is the first circuit board waste to a certain size, into an incinerator burning, the organic components of which decomposition, so that the gas and solid separation. After the incineration of the residue is exposed metal or its oxides and glass fiber, after crushing by physical and chemical methods were recovered. The organic components containing the gas are discharged into the secondary incinerator after the combustion treatment.

Second, pyrolysis in the industry also called dry distillation. Is the circuit board waste placed in the container in the air under the conditions of insulation, so that the organic matter is decomposed into oil and gas, collected by condensation after recovery, metal and glass fiber and other components of the basic changes do not occur, stay in the reaction As a solid residue, the use of simple physical methods can be separated from the recovery. Unlike the incineration of electronic waste, the vacuum pyrolysis process is carried out under anaerobic conditions, so that dioxin, furan production, less exhaust gas generation, and environmental pollution can be prevented.

Third, the basic principle of chemical treatment is the use of various components in the circuit board of the different chemical stability of the waste printed circuit board to the method of resource. This method by the metal enrichment or broken circuit board after the liquid, and then through the multi-level chemical reaction to gradually extract the various metals in the process of recovery.

As an indispensable component of electronic products, circuit boards are widely used in a variety of electronic equipment. In order to solve the waste circuit board broken process of secondary pollution problems, so to solve.