Complete equipment and method for extracting and purifying precious metals from waste circuit boards

A circuit board and precious metal technology, which is applied in the field of complete sets of equipment for refining precious metals, can solve the problems of secondary environmental pollution caused by dioxins, and achieve the effects of saving energy consumption, saving use, and no secondary pollution.

Active Publication Date: 2016-11-09
江西自立环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technology of the present invention is the first in China, which solves the problem of secondary pollution of dioxin to the environment

Method used

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  • Complete equipment and method for extracting and purifying precious metals from waste circuit boards
  • Complete equipment and method for extracting and purifying precious metals from waste circuit boards
  • Complete equipment and method for extracting and purifying precious metals from waste circuit boards

Examples

Experimental program
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Effect test

Embodiment 1

[0065] like figure 1 , 2 As shown, the complete set of equipment:

[0066] The complete set of equipment includes shearing machine 3, pulverizer 4, fragment material 5, double-sided bottom blowing furnace (hereinafter referred to as bottom blowing furnace), heat preservation electric furnace 7, water quenching pool 8, flue gas secondary combustion furnace 9, primary preheating Boiler 10, secondary preheating boiler 11, spray quenching tower 12, pool 13, water pump 14, absorption tower 15, pulse bag filter 16, wet desulfurization device 17, electrostatic dust and mist removal device 18, chimney 19.

[0067] The bottom blowing furnace includes slag outlet 60, furnace base 61, hearth 62, wind eye 63, slag inlet 64, solid feeding inlet 65, top water jacket 66, flue 67, copper water jacket 68, siphon outlet 69 . The hearth 62 is set on the furnace base 61, the hearth is set on the hearth 62, the hearth is provided with a copper water jacket 68, the top of the hearth is a furnace...

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Abstract

The invention discloses complete equipment and a method for extracting and purifying precious metals from waste circuit boards. The complete equipment comprises a bottom-blowing furnace, a secondary smoke combustion furnace, an absorption tower, a pulsed jet cloth filter, a wet desulfurization device and an electrostatic precipitation defogging device, and is characterized in that smoke generated by the bottom-blowing furnace is discharged through a flue arranged on the top of the bottom-blowing furnace; the flue communicates with an inlet of the secondary smoke combustion furnace; the secondary smoke combustion furnace communicates with a spraying quenching tower through a smoke waste heat boiler; an outlet of the spraying quenching tower communicates with the pulsed jet cloth filter through the absorption tower; an activated carbon spraying device is arranged inside the absorption tower; the pulsed jet cloth filter communicates with the wet desulfurization device; and the wet desulfurization device communicated with a chimney through the electrostatic precipitation defogging device. Effective separation and respective enrichment and recycle of various metals are achieved, organic substances are used as fuel, and no secondary pollution is generated for the environment. The process procedure is short, and the remarkable economic, environment-friendly and social benefits are achieved.

Description

technical field [0001] The invention relates to the technical field of pyro-wet combined smelting technology, in particular to a complete set of equipment and a method for extracting precious metals from circuit board waste. Background technique [0002] Electronic waste is a general term for all kinds of electronics that are approaching the end of their "service life", including used computers, mobile phones, televisions, VCD players, speakers, copiers, fax machines, refrigerators, washing machines and other commonly used electronic products. Due to technological progress and price reduction, many of these products are facing the fate of being eliminated by users when they are far from reaching their actual service life. [0003] The generation of electronic waste (including the scrap generated from the production of electronic circuit boards) is rapidly increasing at a rate of 3% to 5% per year, becoming the fastest growing type of solid waste. According to relevant repor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B11/02C22B15/00C22B23/02
CPCC22B7/001C22B11/025C22B15/00C22B23/02Y02P10/20
Inventor 叶标许国洪路永锁黄中良
Owner 江西自立环保科技有限公司
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