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Castoff processing method and system

A technology of treatment system and treatment method, applied in the field of waste treatment and waste treatment system

Active Publication Date: 2010-06-23
DOWA METALS & MINING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that dioxins such as PCDD (isomeric polychlorinated diphenyl) and PCDF (isomeric polychlorinated dibenzofuran) are generated when waste printed circuit boards are burned

Method used

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  • Castoff processing method and system
  • Castoff processing method and system
  • Castoff processing method and system

Examples

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Embodiment Construction

[0041] Hereinafter, preferred embodiments of the present invention will be described based on a waste disposal system for processing waste printed circuit boards. In the present invention, waste refers to waste printed circuit boards (including waste products and obsolete products), which have a structure in which valuable metals such as gold and copper are placed on a substrate obtained by coagulating glass fibers with resin. Printed circuit wiring, and further, capacitors or terminals using valuable metals such as gold, silver, copper, and platinum are mounted.

[0042] Such as figure 1 As shown, the waste treatment system 1 is equipped with a crushing device 2 for crushing waste printed circuit boards, a quantitative supply device 3 such as a belt feeder for quantitatively transporting the crushed materials crushed in the crushing device 2, and as a combustion crushed product. The rotary furnace device 4 which is an example of the primary combustion device, the secondary c...

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Abstract

The invention relates to a waste processing method and a waste processing system which can avoid discharging harmful material as dioxins and effectively attain the slag of value metal. Wherein, the method for recycling value metal comprises: burning the waste, recycling the slag that containing value metal, and fully burning generated gas , and cooling said burning gas with the cooling speed thatavoiding generating dioxins. With said method, the invention can gasify the resin component in the waste via burning waste, to obtain the slag of value metal in short time.

Description

technical field [0001] The present invention relates to a waste treatment method and a waste treatment system for recovering residues containing valuable metals from waste. Background technique [0002] A printed circuit board (printed circuit board) has a structure in which a printed circuit wiring composed of a conductor is formed on a substrate obtained by coagulating glass fibers with resin, and electronic components such as capacitors or terminals are mounted, and connected by printed circuit wiring. between electronic components to form an electronic circuit. Valuable metals such as gold or copper plated with gold are used for such printed wiring. In addition, valuable metals such as gold, silver, copper, and platinum are also used in electronic components. In order to recover such valuable metals from waste printed circuit boards, waste printed circuit boards have been incinerated in an incinerator, and the residues containing valuable metals after incineration are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F23G7/00F23G5/033F23G5/14F23G5/20
CPCY02P10/20Y02W30/82
Inventor 山口洁实山田洁永原弘树中村达也
Owner DOWA METALS & MINING CO LTD
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