Desulfurized gypsum-high-calcium fly ash geopolymer cementing material and preparation method thereof

A technology of high-calcium fly ash and desulfurized gypsum, applied in the field of materials, can solve the problems of high carbon emission and high energy consumption, and achieve the effects of reducing the burden on the environment, reducing huge pressure and reducing costs

Active Publication Date: 2010-10-13
安徽地豪科技环保材料有限公司
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, Portland cement not only consumes a lot of energy, but also its production process is a proc

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
  • Desulfurized gypsum-high-calcium fly ash geopolymer cementing material and preparation method thereof
  • Desulfurized gypsum-high-calcium fly ash geopolymer cementing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] The main raw materials desulfurized gypsum and high-calcium fly ash in the six embodiments of the present invention are taken from a certain power plant, and their main components are shown in Table 1. Sodium hydroxide is a chemical reagent containing 99.2% NaOH; commercially available liquid sodium water glass has a solid content of 38.3% and contains 9.1% Na 2 O, 29.2% SiO 2 And 61.7% water.

[0021] Table 1 The main chemical composition and content of desulfurized gypsum and high calcium fly ash (wt.%)

[0022]

[0023] Example ①

[0024] a. Mix sodium hydroxide and liquid sodium water glass to control its modulus M (SiO 2 ) / n(Na 2 O) is 1.5, made into a compound chemical admixture, aged for 24h, and set aside.

[0025] b. Control the heating rate to 10°C / min, heat the desulfurized gypsum to 600°C, calcinate for 1 hour, and prepare the heat-treated desulfurized gypsum, which will be used after cooling.

[0026] c. Mix high-calcium fly ash and heat-treated desulfurized gypsum ...

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

The invention discloses a desulfurized gypsum-high-calcium fly ash geopolymer cementing material and a preparation method thereof. In the geopolymer cementing material, high-calcium fly ash is used as a main raw material, desulfurized gypsum after heat treatment is used as a mineral admixture, and a solution prepared by sodium hydroxide and liquid sodium silicate is used as a composite chemical admixture. The invention determines the heat treatment mode of the desulfurized gypsum and the modulus and the addition of the composite chemical admixture, and enables the system to have better performance in certain curing environment. In the invention, high-calcium fly ash and sludge which are industrial wastes are utilized, thereby relieving the environmental burden, lowering the cost and reducing resource consumption. Moreover, the geopolymer cementing material is an environment-friendly cementing material with low carbon emission, meets the current social development trend, and has good economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a new type of low-alloy low-temperature chemical compound prepared by using high-calcium fly ash as a silicon-aluminum source raw material, using desulfurization gypsum as a mineral admixture, and using a solution prepared from sodium water glass and sodium hydroxide as a composite chemical admixture. Carbon-emitting geopolymer cementitious material and preparation method thereof. Background technique [0002] Cement is a traditional cementitious material, which has made great contributions to human economic development and social progress. However, the shortage of raw materials for Portland cement has become a very urgent practical problem that the world must face. will run out. In addition, Portland cement not only consumes a lot of energy, but also its production process is a process of high carbon emissions. The production of 1 ton of cement will emit about 1 ton of greenhouse gases. ...

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
IPC IPC(8): C04B11/26
CPCC04B28/008Y02P40/10Y02W30/91C04B12/04C04B18/08C04B20/04C04B22/062C04B22/145C04B40/0028C04B40/0263
Inventor 郭晓潞施惠生
Owner 安徽地豪科技环保材料有限公司
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