A method for removing residual hydrogen fluoride in fluosilicic acid

A technology of fluorosilicic acid and hydrofluoric acid, applied in the direction of halogenated silicon compounds, etc., can solve the problem of difficult disposal of waste FRP materials, and achieve the effects of reducing raw material cost, reducing pollution, and inhibiting hydrolysis reaction

Inactive Publication Date: 2016-02-10
济源市昊达实业有限公司 +1
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method solves the shortcomings of consuming a large amount of silica powder in the production of fluosilicic acid and the fact that fluosilicic acid itself is easy to decompose, and also solves the problem that waste glass fiber reinforced plastic materials are difficult to handle, and reduces the pollution of glass fiber reinforced plastic solid waste 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 method for removing residual hydrogen fluoride in fluosilicic acid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for producing fluosilicic acid by utilizing glass fiber reinforced plastic waste slag, comprising the following specific steps:

[0029] 1) Take FRP scraps and incomplete waste;

[0030] 2) After washing and drying the above-mentioned glass fiber reinforced plastic scraps and incomplete wastes, they are ground and re-selected to obtain silk flocculent glass fiber reinforced plastics and granular glass fiber reinforced plastics;

[0031] 3) Analysis and determination of the content of fluosilicic acid and hydrofluoric acid in industrial fluosilicic acid;

[0032] 4) Add granular glass fiber reinforced plastic to industrial fluosilicic acid and stir for reaction. The amount of granular glass fiber reinforced plastic is 100% of the weight ratio of hydrofluoric acid contained in industrial fluosilicic acid; the reaction temperature is 20°C, and the reaction time is controlled At 72h, the stirring speed was 300 rpm;

[0033] 5) Filter the reaction solution to obta...

Embodiment 2

[0036] A method for producing fluosilicic acid by utilizing glass fiber reinforced plastic waste slag, comprising the following specific steps:

[0037] 1) Take FRP scraps and incomplete waste;

[0038] 2) Washing and drying the above-mentioned glass fiber reinforced plastic scraps and incomplete wastes, then grinding and re-selecting to obtain fibrous flocculent glass fiber reinforced plastics and granular glass fiber reinforced plastics;

[0039] 3) Analysis and determination of the content of fluosilicic acid and hydrofluoric acid in industrial fluosilicic acid;

[0040] 4) Add granular glass fiber reinforced plastic to industrial fluosilicic acid and stir for reaction. The amount of granular glass fiber reinforced plastic is 500% of the weight ratio of hydrofluoric acid contained in industrial fluosilicic acid; the reaction temperature is 45°C, and the reaction time is controlled At 0.5h, the stirring speed was 30 rpm;

[0041] 5) Filter the reaction solution to obtain f...

Embodiment 3

[0044] A method for producing fluosilicic acid by utilizing glass fiber reinforced plastic waste slag, comprising the following specific steps:

[0045] 1) Take FRP scraps and incomplete waste;

[0046] 2) After washing and drying the above-mentioned glass fiber reinforced plastic scraps and incomplete wastes, and then grinding and re-selecting, silk flocculent fiberglass and granular fiberglass are obtained;

[0047] 3) Analysis and determination of the content of fluosilicic acid and hydrofluoric acid in industrial fluosilicic acid;

[0048] 4) Add granular glass fiber reinforced plastic to industrial fluosilicic acid and stir for reaction. The amount of granular glass fiber reinforced plastic is 300% of the weight ratio of hydrofluoric acid contained in industrial fluosilicic acid; the reaction temperature is 37°C, and the reaction time is controlled At 2.5h, the stirring speed was 120 rpm;

[0049] 5) Filter the reaction solution to obtain fluosilicic acid products and g...

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
melting pointaaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for removing residual hydrogen fluoride in fluosilicic acid, which comprises the following steps: taking pretreated glass fiber reinforced plastic waste slag, grinding and reselecting to obtain granular glass fiber reinforced plastics and filamentous glass fiber reinforced plastics, adding industrial fluosilicic acid to the granular glass fiber reinforced plastics, The granular glass fiber reinforced plastic reacts with the hydrofluoric acid contained in the industrial fluosilicic acid, and after the reaction is completed, the floc glass fiber reinforced plastic is added to stabilize the fluosilicic acid aqueous solution. The method of the present invention makes full use of leftovers and waste materials discarded by FRP product factories, which not only saves costs, but also reduces the environmental pollution of FRP solid waste piles according to local conditions; The quality of fluosilicic acid is stable.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and in particular relates to a method for producing fluosilicic acid by utilizing glass fiber reinforced plastic waste slag. Background technique [0002] Fluosilicic acid, also known as silicofluorohydrogen acid, is easily decomposed into silicon tetrafluoride and hydrogen fluoride. Its aqueous solution is colorless and shows a strong acid reaction. It is corrosive and can corrode glass. It can be stored in wax or plastic containers. When the concentrated solution is cooled, colorless dihydrate crystals are precipitated, with a melting point of 19°C. Fluorosilicic acid has disinfection properties and is used to make fluorosilicate and cryolite, as well as electroplating, beer disinfection, wood preservation, etc. It is made by dissolving silicon dioxide in hydrofluoric acid or mixing quartz powder, calcium fluoride and concentrated sulfuric acid and then heating. It can also b...

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): C01B33/10
Inventor 李森波殷继沛潘军青梁达保李亮梁晶梁静杨萌
Owner 济源市昊达实业有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap