Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and method for spraying and leaching indium from waste liquid crystal screen

A liquid crystal screen, dipping technology, applied in the direction of using liquid cleaning methods, cleaning methods and utensils, chemical instruments and methods, etc., can solve the problems of poor environmental protection, high energy consumption, low comprehensive recovery rate of indium, etc., to improve recycling efficiency and productivity

Active Publication Date: 2021-07-02
石家庄绿色再生资源有限公司
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods have high energy consumption, poor environmental protection, low resource utilization rate, and low comprehensive recovery rate of indium.

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
  • Device and method for spraying and leaching indium from waste liquid crystal screen
  • Device and method for spraying and leaching indium from waste liquid crystal screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0122] (1) Liquid crystal screen separation: use professional equipment to separate waste liquid crystal screens into glass substrates with polarizers, so that the ITO (indium tin oxide) layer on the glass substrates can be exposed;

[0123] (2) Feeding: The separated glass substrate with polarizer is manually loaded, and the single piece is flattened on the roller line of the feeding section. down, and the glass substrates with polarizers do not overlap; and then transported to the spray leaching section by means of roller line transport;

[0124] (3) Spray leaching: There are 3 liquid spray pipes with nozzles above the drum line of the spray leaching section, and nozzles are evenly arranged on each liquid spray pipe. The height of the nozzles from the drum line is 15cm, and the distance between the nozzles is 20cm. , The leaching liquid from the leaching spray pump is sprayed from the nozzle, and the coverage of the leaching liquid sprayed from the nozzle is 25cm. The indiu...

Embodiment 2

[0130] (1) Liquid crystal screen separation: use professional equipment to separate waste liquid crystal screens into glass substrates with polarizers, so that the ITO (indium tin oxide) layer on the glass substrates can be exposed;

[0131] (2) Feeding: The separated glass substrate with polarizer is manually loaded, and the single piece is flattened on the roller line of the feeding section. down, and the glass substrates with polarizers do not overlap; and then transported to the spray leaching section by means of roller line transport;

[0132] (3) Spray leaching: There are 5 liquid spray pipes with nozzles above the drum line of the spray leaching section, and nozzles are evenly arranged on each liquid spray pipe. The height of the nozzles from the drum line is 15cm, and the distance between the nozzles is 20cm. , The leaching liquid from the leaching spray pump is sprayed from the nozzle, and the coverage of the leaching liquid sprayed from the nozzle is 25cm. The indiu...

Embodiment 3

[0138] (1) Liquid crystal screen separation: use professional equipment to separate waste liquid crystal screens into glass substrates with polarizers, so that the ITO (indium tin oxide) layer on the glass substrates can be exposed;

[0139] (2) Feeding: The separated glass substrate with polarizer is manually loaded, and the single piece is flattened on the roller line of the feeding section. down, and the glass substrates with polarizers do not overlap; and then transported to the spray leaching section by means of roller line transport;

[0140] (3) Spray leaching: There are 3 spray pipes with nozzles above the drum line of the spray leaching section, and nozzles are evenly arranged on each spray pipe. The height of the nozzles from the drum line is 15cm, and the distance between the nozzles is 30cm. , The leaching liquid from the leaching spray pump is sprayed from the nozzle, and the coverage of the leaching liquid sprayed from the nozzle is 25cm. The indium-containing l...

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

PropertyMeasurementUnit
widthaaaaaaaaaa
lengthaaaaaaaaaa
lengthaaaaaaaaaa
Login to View More

Abstract

The invention relates to a device and a method for spraying and leaching indium from a waste liquid crystal screen. The device comprises a feeding section, a spraying leaching section, a cleaning section and a wind shear drying section which are sequentially connected in series; the cleaning section comprises a first cleaning section and a second cleaning section which are sequentially connected in series; and roller lines are laid on the feeding section, the spraying leaching section, the cleaning section and the wind shear drying section. According to the device, indium in the waste liquid crystal screen can be automatically and continuously treated; and according to the method for spraying and leaching indium from the waste liquid crystal display screen by using the device, an ITO layer on the waste liquid crystal display screen can be continuously and automatically sprayed and leached, sprayed and cleaned and subjected to wind-cut water removal, continuous and automatic treatment of indium in the waste liquid crystal display screen is realized, and the recovery rate and the production efficiency of indium are improved.

Description

technical field [0001] The invention belongs to the field of indium recovery, and in particular relates to a device and method for spraying and leaching indium from waste liquid crystal screens. Background technique [0002] Liquid crystal display is currently the display with the highest penetration rate and the widest range of applications. The annual scrap volume of liquid crystal display is very large, and it contains materials such as valuable metal indium and plastic, which have high recycling value. [0003] At present, the main methods of recycling waste LCD screens are: low-temperature pyrolysis to separate glass substrates and polarizers, crushing chemical leaching, and then extracting and recovering indium with an extractant; organic solvent of acetone strips polarizers, glass substrates are broken again, chemical leaching and Extraction and recovery of indium; high temperature heat treatment, heat treatment of polarizers and liquid crystals, then crushing and aci...

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 Applications(China)
IPC IPC(8): C22B7/00C22B1/00C22B58/00B08B3/02B08B13/00F26B21/00
CPCC22B7/007C22B1/005C22B58/00B08B3/022B08B13/00F26B21/004B08B2203/0217Y02P10/20
Inventor 周文斌廖杰陈龙石秋成秦邦保彭茜茜
Owner 石家庄绿色再生资源有限公司