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Comprehensive resourceful treatment system and method of electronic wastes

An electronic waste and comprehensive resource technology, applied in the field of electronic waste comprehensive resource treatment system, can solve the problems of low pyrolysis temperature, required vacuum environment, pipeline blockage, etc.

Pending Publication Date: 2017-12-15
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The Chinese invention patent with the authorized announcement number CN1014238998B proposes a method for vacuum pyrolysis of waste circuit boards to obtain pyrolysis oil, cracking slag and pyrolysis gas. The pyrolysis gas is used as fuel to provide energy for the pyrolysis process. This method realizes The organic components are fully utilized, but the pyrolysis temperature is low, and the pyrolysis gas condenses after cooling down during the collection process, which may easily cause pipeline blockage, and requires a vacuum environment, which requires high equipment requirements

Method used

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  • Comprehensive resourceful treatment system and method of electronic wastes

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Effect test

Embodiment 1

[0067] Embodiment 1: A method for comprehensive recycling of electronic waste, comprising the following steps:

[0068] 1) Pellet sintering: first cut and crush the waste computer mainframe into electronic waste pellets with a particle size of 5-10mm, and then mix the electronic waste pellets with slagging agent and binder according to the mass ratio of 1:0.5: 0.1 Use N after uniform mixing 2 In the protected indirect heating sintering method, the sintering process is carried out at a temperature of 600°C to obtain agglomerates and generate sintering gas at the same time; among them, the slagging agent is limestone and quartz sand mixed in a mass ratio of 2:3, and the binder is soap. earth;

[0069] 2) Plasma gasification smelting: Alternately put the agglomerates and coke obtained in step 1) into the plasma gasification smelting furnace at a mass ratio of 1:0.7, so that the two are alternately arranged longitudinally in layers, and at the same time, the After the sintering ...

Embodiment 2

[0072] Embodiment 2: A method for comprehensive recycling of electronic waste, comprising the following steps:

[0073] 1) Pellet sintering: first cut and crush the discarded CRT TV mainboard into electronic waste pellets with a particle size of 10-15mm, and then mix the electronic waste pellets with slagging agent and binder according to the mass ratio of 1: 0.4∶0.1 After uniform mixing, use N 2 In the protected indirect heating sintering method, the sintering process is carried out at a temperature of 600°C to obtain sintered agglomerates and generate sintering gas at the same time; among them, the slagging agent is limestone, dolomite, and quartz sand mixed in a mass ratio of 2:1:1. The binder is peat;

[0074] 2) Plasma gasification smelting: Alternately put the agglomerates and coke obtained in step 1) into the plasma gasification smelting furnace at a mass ratio of 1:0.6, so that the two are alternately arranged in layers in the longitudinal direction, and at the same t...

Embodiment 3

[0077] Embodiment 3: A method for comprehensive recycling of electronic waste, comprising the following steps:

[0078] 1) Pellet sintering: first cut and crush waste mobile phones into electronic waste pellets with a particle size of 0.1-3mm, and then combine the electronic waste pellets with slagging agent and binder at a mass ratio of 1:0.5:0.1 After uniform mixing, use N 2 In the protected indirect heating sintering method, the sintering process is carried out at a temperature of 780°C to obtain sintered blocks and generate sintering gas at the same time; among them, the slagging agent is limestone and quartz sand mixed at a mass ratio of 2:3, and the binder is clay. ;

[0079] 2) Plasma gasification smelting: put the sintered agglomerates and coke obtained in step 1) into the plasma gasification smelting furnace alternately at a mass ratio of 1:1, so that the two are alternately arranged in layers in the longitudinal direction; After the sintering gas is collected and m...

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Abstract

The invention discloses a comprehensive resourceful treatment system and a method of electronic wastes. The treatment method comprises the steps of: 1) particle sintering; 2) plasma gasification smelting; 3) smelting smoke oiling; and 4) valuable metal recovery. Such procedures as sintering gas harmlessness, smelting smoke afterheat recovery and harmlessness, tail gas recycling and metal comprehensive recovery are arranged in shorter process flow to realize full harmlessness, reduction and resourceful utilization of the electronic wastes; and the method can be popularized and applied to similar resourceful recovery field of solid wastes mixed by organic matters and metal materials.

Description

technical field [0001] The invention relates to the technical field of electronic waste treatment, in particular to an electronic waste comprehensive resource treatment system and method thereof. Background technique [0002] Electronic waste, commonly known as "electronic waste", refers to the waste generated in the production process of electronic and electrical products and the electronic and electrical equipment that is discarded and no longer used. It has a wide variety of components and complex structures, and involves various fields of industrial production and residents' lives. . With the rapid development of the electronic information industry and the continuous improvement of people's living standards, the replacement speed of electronic products is gradually accelerating. The annual global electronic waste production is as high as 40-50 million tons, and it is still growing at an annual rate of 5-10%. The rate of increase has caused a huge threat to the global ec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00C22B7/00
CPCC22B7/003C22B7/005C22B7/02B09B3/00Y02W30/20Y02P10/20
Inventor 刘静欣
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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