Circuit board recovery method

Abstract

The invention provides a circuit board recovery method, and relates to the technical field of circuit board recovery. The method comprises the steps of crushing circuit boards so as to obtain first crushing materials, and extracting ferromagnetic materials from the first crushing materials by utilizing a magnet, wherein the particle size of the first crushing materials is not larger than the firstsize; crushing the first crushing materials so as to obtain second crushing materials, and extracting ferromagnetic materials from the second crushing materials by utilizing the magnet, wherein the particle size of the second crushing materials is not larger than the second size; extracting particles of which the density is larger than the preset density with particles of which the air separationdensity is less than the preset density and particles of which the density is larger than the preset density; jigging and separating the particles of which the density is less than the preset density, and separating metal particles and first surplus materials from the particles of which the density is less than the preset density; and heating the first surplus materials to the preset temperatureso as to obtain gas, liquid and second surplus materials, and recovering the gas and the liquid. According to the circuit board recovery method disclosed by the invention, the waste of resources and environmental pollution can be avoided.

Description

Technical field [0001] The present disclosure relates to the technical field of circuit board recycling, and in particular to a circuit board recycling method. Background technique [0002] Printed Circuit Board (PCB) is an important part of electronic products and is often used in integrated circuits. Printed circuit boards usually contain a large amount of polymer materials and rare metal elements, such as resin, gold, silver, platinum, palladium, copper, aluminum, nickel, zinc, iron, manganese, etc. At present, printed circuit boards are usually discarded directly after they are scrapped. Therefore, it not only wastes resources but also causes environmental pollution. [0003] It should be noted that the information disclosed in the above background section is only used to enhance the understanding of the background of the present disclosure, and therefore may include information that does not constitute the prior art known to those of ordinary skill in the art. Summary of the...

AI Technical Summary

Problems solved by technology

At present, printed circuit boards are usually discarded directly after they are scrapped, so it not only wastes resources but also causes environmental pollution

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