Noble metal recovering method of waste circuit board powder
A technology for recycling waste circuit boards and precious metals, applied in the direction of improving process efficiency, etc., can solve the problems of environmental pollution by chemical recycling methods, achieve the effects of low noise, increased recovery rate, and improved separation purity
Active Publication Date: 2019-06-07
杭州因迈科技有限公司
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Problems solved by technology
[0005] In order to solve the problems existing in the background technology and aim at the problem of environmental pollution caused by the chemical recovery method of waste circuit board powder, the present invention proposes a new precious metal recovery method for waste circuit board powder, by controlling the movement speed of waste circuit board powder and ultrasonic transducer The displacement of the substrate material in the waste circuit board powder is controlled by the size of the amplitude of the detector, the screening of precious metals in the waste circuit board powder is realized, and the recovery rate of precious metals in the waste circuit board powder is effectively improved.
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[0039] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various modifications and changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.
[0040] Such as Figure 4 Shown, the specific implementation of the present invention adopts following device, comprises separating device frame 1, ultrasonic component, hopper 7 and conveyer belt 10; Both sides on the separating device frame 1 are symmetrically installed with two ultrasonic components, between two ultrasonic components A conveyor belt 10 is arranged, a hopper 7 is arranged above the conveyor belt 10, and waste circuit board ...
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Abstract
The invention discloses a noble metal recovering method of waste circuit board powder. The noble metal recovering method comprises the following steps of crushing a waste circuit board to obtain mixedpowder of a base plate material and noble metal which have the same particle diameter; setting the displacement of waste circuit board powder particles and base plate material particles by adopting aformula according to the belt speed of a conveyor belt and the vibration amplitude of an ultrasonic transducer; enabling the mixed powder to fall onto the conveyor belt and conveying the mixed powderfrom an input side to an output side, arranging the ultrasonic transducer on the side of the conveyor belt, emitting acoustic radiation force to the mixed powder on the conveyor belt by the ultrasonic transducer, setting the speed of the conveyor belt and the vibration amplitude of the ultrasonic transducer, which meet conditions, so as to control the operation of the conveyor belt and the work of the ultrasonic transducer, and separating the base plate material from metal; and setting and controlling different parameter repeated steps for multiple screening. The screening of noble metal in the waste circuit board powder is realized, and the noble metal recovery rate of the waste circuit board powder is effectively improved.
Description
technical field [0001] The invention relates to a method for recycling metals in the technical field of environmental protection, in particular to a method for recycling precious metals in waste circuit board powder. Background technique [0002] In recent years, the output of electronic products has been huge. At the same time, there is a large amount of electronic product waste every year, including tin, copper and other precious metal components, and its recycling is of great value. [0003] Chinese published patent CN103320618A (disclosure date 2013.09.25) proposes a method for recovering precious metals from waste printed circuit boards by combining physical separation and bioleaching. After crushing waste printed circuit board fragments and high-voltage electrostatic separation, use The hydrocyanic acid secreted by Pseudomonas leaches the mixed metal particles step by step to obtain single-ion solutions of ordinary metals and noble metals in sequence, and then the nobl...
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IPC IPC(8): C22B7/00C22B11/00
CPCY02P10/20
Inventor 唐静
Owner 杭州因迈科技有限公司