Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A technology for disposal and utilization of circuit board waste

A circuit board and waste technology, which is applied in the field of circuit board waste disposal and utilization, can solve the problems of secondary pollution of dioxin to the environment, and achieve the effects of saving energy consumption, saving energy consumption and simple material preparation.

Active Publication Date: 2018-07-13
江西自立环保科技有限公司
View PDF7 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A technology for disposal and utilization of circuit board waste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as figure 1 As shown, the process flow:

[0055] (1) Disassemble waste electrical appliances (used computers, mobile phones, TV sets, VCD players, speakers, copiers, fax machines, automotive electronic components and other commonly used electronic products), and sort out circuit board waste.

[0056] (2) Use a shredder or a rotary crusher to crush the circuit board waste to form fragments with a particle size of 2 cm×2 cm to 8 cm×8 cm.

[0057] (3) According to the weight ratio of 20:3:7 to 12m 2 The double-sided bottom-blown furnace (hereinafter referred to as the bottom-blown furnace) is put into circuit board waste fragments, coal powder, and electric furnace insulation slag. Coal powder is sprayed into the furnace from the top of the furnace, and circuit board waste is put in from the feed bin, and burned and decomposed completely at 1200 ℃ ~ 1250 ℃. The slag in the electric furnace holding furnace is released from the slag outlet of the bottom blowing furna...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a waste circuit board material disposal and utilization technology. Waste circuit board materials serve as raw materials, and are subjected to mechanical crushing and smelting in an oxygen enrichment side-blowing molten pool at the temperature of 1100-1400 DEG C to produce crude copper rich in rare and noble metals; then metallic copper and anode mud rich in rare and noble metals are obtained through electrolytic refining; smelting gas restrains resynthesis of dioxin after being subjected to secondary combustion and quick cooling; and a bag collector recycles oxides of volatile metals such as tin, lead and zinc, and the dust content of the drained gas is 0-15 mg / Nm<3>. A trapping agent can make the copper content of slag be lower than 0.2%, recycling of all rare and noble metals is achieved, and the slag is waste slag containing silicate and can be used as cement raw materials or road foundation laying materials. The waste circuit board materials and the like are recycled and utilized, 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 technology for disposal and utilization of 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 reports, the world produces up to 50 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/00C22B1/00C22B15/00C22B11/02C25C1/12C22B19/30C22B21/00C22B25/06
CPCC22B1/005C22B7/001C22B11/025C22B15/0056C22B19/30C22B21/0007C22B25/06C25C1/12Y02P10/20
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
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com