Dry-type separation and recovery system and process for circuit boards

A separation and recycling, circuit board technology, used in electronic waste recycling, recycling technology, solid waste removal and other directions, can solve the problems of water pollution, secondary environmental pollution, etc., to prevent dust pollution, improve quality, and novel structure Effect

Inactive Publication Date: 2015-07-22
江苏地一环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are many recycling methods for waste circuit boards, such as chemical methods such as heat treatment, corrosion, electrolysis and pickling, but these methods will cause secondary pollution to the environment
For example, ZL200910033825.2 uses water as the medium for recycling, but it will pollute the water body

Method used

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  • Dry-type separation and recovery system and process for circuit boards
  • Dry-type separation and recovery system and process for circuit boards

Examples

Experimental program
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Embodiment 1

[0024] Such as figure 1 As shown, a circuit board dry separation and recovery system includes a crushing production line and a separation production line. The primary pulverizer 2 is arranged below the discharge port of the primary pulverizer 1; the separation production line includes a cyclone feeder 5, an airflow separator 6, dust removal equipment and an electrostatic separator 7 in sequence, and the airflow separator 6 is arranged in the cyclone Below the feeding machine 5.

[0025] An auger machine 8 for transporting materials is provided between the third-stage pulverizer 4 and the secondary pulverizer 3 . A second conveyor 9 is provided between the tertiary pulverizer 4 and the cyclone feeder 5 . The dust removal equipment includes a first pulse dust collector 10 and a second pulse dust collector 11 .

[0026] The number of the aforementioned crushing production lines is one, while the number of separation production lines is two, which are arranged side by side. Mo...

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PUM

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Abstract

The invention discloses a dry-type separation and recovery system for circuit boards. The system comprises a crushing production line and a separating production line, wherein the crushing production line sequentially comprises a conveyer, a primary crusher, a secondary crusher and a tertiary crusher; the secondary crusher is arranged below the discharge hole of the primary crusher; the separating production line sequentially comprises a cyclone feeder, an air flow sorting machine, dedusting equipment and an electrostatic separator; the air flow sorting machine is arranged below the cyclone feeder. Compared with a conventional circuit board recovery method, the recovery process disclosed by the invention has the characteristics that no harmful substances are discharged to the environment, all wastes are recycled, and the energy consumption is low.

Description

technical field [0001] The invention relates to the field of recycling and utilization of waste such as circuit boards, in particular to a system and process for dry separation and recovery of circuit boards. Background technique [0002] In daily life, we often see wastes such as waste printed circuit boards, cables, aluminum plastics, etc. The proportion of these wastes in urban solid waste is getting higher and higher. The amount of electronic waste processed in my country reaches hundreds of tons every year, of which printed circuit boards account for about 4% of the total. The metal grade in waste circuit boards is dozens or even hundreds of times that of natural mineral deposits, which has important recycling value. [0003] At present, there are many recycling methods for waste circuit boards, such as chemical methods such as heat treatment, dissolution, electrolysis and pickling, but these methods will cause secondary pollution to the environment. For example, ZL200...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00
CPCY02W30/82
Inventor 王中华
Owner 江苏地一环保科技有限公司
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