Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Decolor method for fly ash

A technology for fly ash and decolorization, applied in sustainable waste treatment, solid waste management, climate sustainability, etc., can solve the problem of low whiteness of fly ash, and achieve the effect of simple production process

Inactive Publication Date: 2006-12-06
SHENYANG JIANZHU UNIVERSITY
View PDF0 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcoming that fly ash whiteness is low, improve through experiment, provide a kind of 2 A method of decolorizing fly ash and increasing the whiteness of fly ash as the main raw material

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Completely immerse the primary fly ash with a carbon content of 1% in water, and heat the water to boiling. will CO 2 The gas is heated to 200°C and passed into boiling water soaked with fly ash, so that the fly ash in the water and CO 2 Fully contact for 5 minutes, the whiteness of fly ash can be increased to 70.

Embodiment 2

[0012] Completely immerse the primary fly ash with a carbon content of 0.1% in water, and heat the water to boiling. will CO 2 The gas is heated to 200°C and passed into boiling water soaked with fly ash, so that the fly ash in the water and CO 2 Fully contacted for 5 minutes, the whiteness of fly ash can be increased to 79.

Embodiment 3

[0014] Completely immerse the primary fly ash with a carbon content of 0.1% in water, heat the water to boiling to reduce CO 2 The gas is heated to 200°C and passed into boiling water soaked with fly ash, so that the fly ash in the water and CO 2 After full contact for 15 minutes, the whiteness of fly ash can be increased to 81.

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

No PUM Login to View More

Abstract

This invention relates to a method for decoloring fly ashes. The method comprises: (1) soaking first grade fly ashes with 0.1-1% carbon content in water, and boiling; (2) heating carbon dioxide to 200 deg.C, and introducing into the boiling water soaked with fly ashes; (3) contacting fly ashes with carbon dioxide for 5-15 min for decoloration. The method uses carbon dioxide as the major raw materials, thus having such advantages as simple process, mild conditions, and improved fly ashes whiteness.

Description

technical field [0001] The invention relates to a processing method for building materials, in particular to a method for decolorizing fly ash. Background technique [0002] Fly ash is a kind of industrial ash with large accumulation and annual output. Its stacking seriously occupies cultivated land and pollutes the environment. At the same time, it has small fineness, uniform particle size and pozzolanic activity. From the above physical properties, it is a good filler for architectural coatings. However, its color is gray and its whiteness is very low, so it is not suitable as a filler for architectural coatings. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcoming that fly ash whiteness is low, improve through experiment, provide a kind of 2 As the main raw material, it is a method to decolorize fly ash and increase the whiteness of fly ash. [0004] The purpose of the present invention is achieved through the follow...

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): C04B18/08C04B20/00
CPCC04B18/08Y02W30/91C04B20/023
Inventor 于晓东
Owner SHENYANG JIANZHU UNIVERSITY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com