Check patentability & draft patents in minutes with Patsnap Eureka AI!

Preparation method of spherical polymerized micron-size flyash particles

A fly ash, micron-level technology, applied in the field of materials, can solve problems such as unfavorable column packing operation and separation, secondary pollution, etc., and achieve the effects of excellent adsorption, resource saving and ecological environment protection.

Inactive Publication Date: 2015-06-17
TAIYUAN UNIV OF TECH +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to differences in coal quality and combustion conditions, fly ash is composed of particles with different structures and shapes. The particle size of a single fly ash particle is small, with an average particle size of about tens of microns, which is not conducive to column packing operation. and separation, often causing secondary pollution

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
  • Preparation method of spherical polymerized micron-size flyash particles
  • Preparation method of spherical polymerized micron-size flyash particles
  • Preparation method of spherical polymerized micron-size flyash particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A method for preparing micron-sized spherical fly ash aggregated particles is characterized in that it comprises the following steps:

[0024] (1) Grind the fly ash particles evenly to obtain fly ash powder for later use;

[0025] (2) Add tetraethyl orthosilicate and (γ-aminopropyl) triethoxysilane respectively to the fly ash powder prepared in step 1, fly ash powder, ethyl orthosilicate and (γ-aminopropyl Base) the mass ratio of triethoxysilane is 5:2:1, stir evenly;

[0026] (3) Add absolute ethanol to the solution prepared in step 2, stir evenly, then add double distilled water and concentrated sulfuric acid respectively, the mass ratio of absolute ethanol, double distilled water and concentrated sulfuric acid is 20:1:2, no The mass ratio of water ethanol to the fly ash powder added in step 2 is 1:2, continue to stir, and then keep the temperature at 60°C for 2 hours;

[0027] (4) Add NaOH powder to the solution prepared in step 3, the mass ratio of NaOH powder and...

Embodiment 2

[0029] In the process step 2 of this embodiment, the mass ratio of fly ash powder, tetraethyl orthosilicate, (γ-aminopropyl) triethoxysilane is 5:1:1, and other process steps are the same as in Example 1 .

Embodiment 3

[0031] In the process step 2 of this embodiment, the mass ratio of fly ash powder, tetraethyl orthosilicate, (γ-aminopropyl) triethoxysilane is 5:3:1, and other process steps are the same as in Example 1 .

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
diameteraaaaaaaaaa
Login to View More

Abstract

The invention provides a preparation method of spherical polymerized micron-size flyash particles. The method is characterized by comprising the following steps: evenly grinding the flyash particles to prepare flyash powder; adding TEOS (tetraethoxysilane) and (gamma-aminopropyl) triethoxysilane respectively into the flyash powder, and stirring evenly; and adding absolute ethyl alcohol, redistilled water and concentrated sulfuric acid into the prepared solution, stirring evenly, then maintaining at a certain temperature and heating continuously; and then adding NaOH powder, holding the temperature unchanged, pouring out a reaction liquid after the reaction is finished, and washing the precipitate with acetone and the redistilled water alternately. The method takes the flyash as the main raw material, has the advantages of low cost, facilitation of operation, mild reaction conditions, capability of regulating particle sizes effectively, and the like, and has more excellent adsorbability for metal ions. Additionally, the spherical polymerized micron-size flyash particles prepared with the method can be recycled after alkali treatment, and has a potential application prospect in absorption and catalytic fields.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to the preparation of micron-sized spherical fly ash polymer particles by copolymerizing fly ash particles with small molecule siloxane TEOS and silane coupling agent (γ-aminopropyl) triethoxysilane Methods. Background technique [0002] Fly ash is a solid waste discharged from coal-fired thermal power plants, and its main component is SiO 2 、Al 2 o 3 , CaO, Fe 2 o 3 Wait. With the development of the power industry, the discharge of fly ash from coal-fired power plants is increasing year by year. A large amount of fly ash not only pollutes the environment, but also causes a waste of resources. In order to solve this problem, countries all over the world have carried out research on the utilization of fly ash resources. At present, fly ash is mainly used in construction materials, agricultural fertilizers, soil conditioners and adsorption materials. Among them,...

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): B01J20/26B01J20/28B01J20/30
Inventor 吴旭杜亚丽宋少飞赵强祝宝林刘有军
Owner TAIYUAN UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com