Method for increasing metal recovery rate of waste circuit boards

Abstract

The invention discloses a method for increasing the metal recovery rate of waste circuit boards, and relates to the technical field of circuit board metal recovery. According to the method, a crushing assembly and a separating assembly are included, the right side of the crushing assembly is connected with a quantifying assembly, the lower end of the quantifying assembly is connected with a screening assembly, and the screening assembly comprises a separating bin, fans, an air outlet pipe, an air outlet, a scrap suction opening, an air suction fan, a guide pipe and a scrap collecting bin. By means of the fans arranged on the two sides of the outer part of the separating bin and through cooperation with the air outlet pipe connected with the interiors of the fans, metal and nonmetal screening work can be effectively conducted on the broken circuit boards entering the separating bin, that metal can fall into the bottom of the separating bin after entering the separating bin due to the weight of the metal, meanwhile, the nonmetal light scraps move towards the upper part of the separating bin under blowing of the air outlet pipe, and the separating effect can be achieved; the air outlet pipe and the separating bin which are matched in size are matched with the inclined air outlet, and the actual screening effect can be fully guaranteed.

Description

technical field [0001] The invention relates to the technical field of circuit board metal recovery, in particular to a method for improving the recovery rate of waste circuit board metal. Background technique [0002] With the increase of people's demand for electronic products, the number of waste circuit boards is gradually increasing, which will inevitably have a negative impact on the environment. As an important component of electronic waste, waste circuit boards contain A large number of metal resources, including valuable metals such as silver, copper, nickel, aluminum, zinc, tin, lead, and base metals such as iron, can realize the effect of resource reuse by recycling waste circuit board metals. [0003] Most of the recovery methods of waste circuit board gold on the market are chemical recovery. The waste water containing metal in the recovery process is easy to pollute the environment, and the recovery effect is not ideal. Contents of the invention [0004] The...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for improving the metal recovery rate of waste circuit boards, to solve the problem that most of the gold recovery methods for waste circuit boards proposed in the above-mentioned background technology are chemical recovery, and the metal-containing wastewater in the recovery process is likely to pollute the environment, and the recycling Problems with unsatisfactory results

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