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Grinding recovery treatment technology of waste electron wiring board and its equipment

A technology of electronic circuit board recycling and treatment, which is applied in the direction of solid waste removal and process efficiency improvement, which can solve social and environmental pollution and other problems, and achieve the effects of no secondary pollution, long service life of equipment, and good separation effect

Inactive Publication Date: 2006-06-14
浙江丰利粉碎设备有限公司
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AI Technical Summary

Problems solved by technology

The existing treatment methods mainly include the following: the first is chemical treatment, which corrodes non-metals, and reacts copper metal into copper sulfate; the other is burning non-metals to extract metals. This method produces serious pollution to the social environment

Method used

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  • Grinding recovery treatment technology of waste electron wiring board and its equipment
  • Grinding recovery treatment technology of waste electron wiring board and its equipment
  • Grinding recovery treatment technology of waste electron wiring board and its equipment

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Embodiment Construction

[0024] A waste electronic circuit board crushing and recycling process, which includes: the processed waste electronic circuit board is first broken into pieces smaller than 50×50mm by a powerful crusher, then enters a magnetic separator for iron removal, and then enters a secondary crusher for further crushing into granules smaller than 8-15mm, and the granules are sent to a fine pulverizer for crushing. Here, through crushing and dissociation, the metals are separated from the original attachment on the surface of non-metallic objects, and become the particle size. The mixed powder of metal powder and non-metal powder smaller than 0.4mm; the mixed powder is first separated by ultrafine classifier to remove 30-60% of the non-metal powder with a particle size of less than 0.1-0.15mm, and then enters the high-voltage electrostatic separator. The metal powder is collected; after the metal and non-metal are separated by the high-voltage electrostatic separator, the metal and non-m...

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PUM

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Abstract

The invention relates to a worn-out electronic circuit plate mechanical disintegration and electrostatic separation recovery processing technique and its using equipment. The processing steps include the following steps: crushing worn-out electronic circuit plate; intermediate crushing after removing iron; fine crushing; dividing part nonmetal matter by ultra-micro classifier; sending to high voltage electrostatic separator to from finished product. The equipment includes brute force crusher, magnetic separator, intermediate crusher, fine crusher, ultra-micro classifier, and high voltage electrostatic separator. Its advantages are good crushing dissociation, good reclaiming effect, low energy consumption, long using life and no secondary pollution.

Description

1. Technical field [0001] The patent of the present invention relates to a method for mechanically crushing and recycling waste electronic circuit boards at normal temperature, specifically a method for recycling and processing metal and waste metal materials in waste electronic circuit boards through mechanical crushing and electrostatic separation . 2. Background technology [0002] Printed circuit boards (PCBs) are the foundation of the electronics industry. With the rapid development of the information industry, the production of printed circuit boards is increasing rapidly. The average annual growth rate of the world's printed circuit board industry is 8.7%, of which China's growth rate is 14.4%. By 1995, the total output value of my country's printed circuit boards had accounted for 50% of the world's total output value of printed circuit boards. At present, China has become a major producer and consumer of home appliances and electronic products. Since 2003, my coun...

Claims

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Application Information

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IPC IPC(8): C22B7/00B09B3/00
CPCY02P10/20
Inventor 余绍火
Owner 浙江丰利粉碎设备有限公司
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