Method for producing calcium fluoride by waste LCD panel glass etching liquid
A panel glass and etching solution technology, applied in the direction of calcium/strontium/barium fluoride, calcium/strontium/barium halide, etc., can solve the problems of waste of fluorine resources, reuse, waste of dry materials, etc., and achieve low molecular weight and high price. Low, purity-enhancing effect
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0016] The method for producing calcium fluoride from waste LCD panel glass etching solution of the present invention includes the following steps in sequence:
[0017] ⑴ A certain amount of waste LCD panel glass etching solution is used to determine the content of hydrofluoric acid, hexafluorosilicic acid and hexafluoroaluminate in the waste LCD panel glass etching solution. The weight percentage of the hydrofluoric acid in the etching solution is 16.5%, The weight percentage of the hexafluorosilicic acid in the etching solution is 20%, and the weight percentage of the hexafluoroaluminate in the etching solution is 8%.
[0018] (2) Add sodium fluoride solid to the waste LCD panel glass etching solution, the weight ratio is waste LCD panel glass etching solution: sodium fluoride=1:0.2, fully stir to make hexafluorosilicic acid and sodium fluoride completely react to produce hexafluorosilicon Sodium and hydrofluoric acid, H 2 SiF 6 +2NaF→Na 2 SiF 6 ↓+2HF; completely react hexafluor...
Embodiment 2
[0027] The method for producing calcium fluoride from waste LCD panel glass etching solution of the present invention includes the following steps in sequence:
[0028] (1) A certain amount of waste LCD panel glass etching solution is used to determine the content of hydrofluoric acid, hexafluorosilicic acid and hexafluoroaluminate in the waste LCD panel glass etching solution. The weight percentage of the hydrofluoric acid in the etching solution is 17.6%, The weight percentage of the hexafluorosilicic acid in the etching solution is 21%, and the weight percentage of the hexafluoroaluminate in the etching solution is 8.4%.
[0029] ⑵Add sodium fluoride solid to the waste LCD panel glass etching solution, the weight ratio is waste LCD panel glass etching solution: sodium fluoride=1:0.22, fully stir the hexafluorosilicic acid and sodium fluoride to completely react to produce hexafluorosilicon Sodium and hydrofluoric acid, H 2 SiF 6 +2NaF→Na 2 SiF 6 ↓+2HF; completely react hexafluo...
Embodiment 3
[0038] The method for producing calcium fluoride from waste LCD panel glass etching solution of the present invention includes the following steps in sequence:
[0039] ⑴ A certain amount of waste LCD panel glass etching solution is used to determine the content of hydrofluoric acid, hexafluorosilicic acid and hexafluoroaluminate in the waste LCD panel glass etching solution. The weight percentage of the hydrofluoric acid in the etching solution is 18.5%, The weight percentage of the hexafluorosilicic acid in the etching solution is 22%, and the weight percentage of the hexafluoroaluminate in the etching solution is 9%.
[0040] (2) Add sodium fluoride solid to the waste LCD panel glass etching solution, the weight ratio is waste LCD panel glass etching solution: sodium fluoride=1: 0.25, fully stir the hexafluorosilicic acid and sodium fluoride to completely react to produce hexafluorosilicon Sodium and hydrofluoric acid, H 2 SiF 6 +2NaF→Na 2 SiF 6 ↓+2HF; completely react hexafluo...
PUM
Abstract
Description
Claims
Application Information
- R&D Engineer
- R&D Manager
- IP Professional
- Industry Leading Data Capabilities
- Powerful AI technology
- Patent DNA Extraction
Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.
© 2023 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap