A method for reclaiming anhydrous indium salt and anhydrous tin salt from indium tin oxide

A technology of indium tin oxide and tin salt, applied in the field of alloy waste recycling, can solve the problems of consuming resin, large secondary waste, large energy, etc., and achieve the effects of energy saving, simple operation and high economy
CN107226480BActive Publication Date: 2019-01-22顾帅
5 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
顾帅
Publication Date
2019-01-22

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention belongs to the technical field of alloy waste material recovery and utilization, and discloses a method for recovering anhydrous indium salt and anhydrous tin salt from indium tin oxide. The method comprises the following steps that S1, the indium tin oxide is dissolved by acid; indium and tin exist in the acid in an ion form; S2, the acid is removed through distillation; an indium salt hydrate and a tin salt hydrate are left; S3, a dehydrating agent is added into the hydrates in the S2; heating reflux is performed to obtain the anhydrous indium salt and the anhydrous tin salt; S4, the anhydrous indium salt and the anhydrous tin salt are separated. The method disclosed by the invention has the advantages that the product with extremely high purity can be obtained; all used reagents can be almost cyclically used; no pollution is generated on the environment; less energy and fewer reagents are consumed by the method; the method can be stably used for large-scale industrial practice; a large amount of energy can be saved; the operation is simple and convenient; the extremely high economic performance is realized.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention belongs to the technical field of alloy waste recycling and utilization, and in particular relates to a method for recycling anhydrous indium salt and anhydrous tin salt from indium tin oxide. Background technique

[0002] Indium tin oxide (ITO) is an indium oxide (In 2 o 3 ) and tin oxide (SnO 2 ) mixture, due to its good electrical conductivity and optical transparency, is widely used in liquid crystal displays, flat panel displays, plasma displays, touch screens, electronic paper, organic light-emitting diodes and solar cells and other fields. Especially in the production process of various displays, because the process is sputtering, 85% of ITO becomes waste, and only 15% can be effectively utilized. At present, 65% of the global indium production is used to produce ITO, so it can be seen that it is imperative to recover scattered metal indium from waste ITO. At present, there are three mainstream recovery methods. One is liquid-l...

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