Retarder for desulfurization building gypsum

A technology for desulfurized building gypsum and retarder, which is applied in the field of retarder for desulfurized building gypsum, which can solve the problems of gypsum strength loss and achieve the effects of small strength loss, low cost and less dosage

Inactive Publication Date: 2017-02-01
GUANGXI HUILONG SCI & TECH CO LTD
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the retarding agent will cause different degrees of loss of gypsum strength while retarding, which limits the popularization and application of gypsum building materials to a certain extent.
Although there are some studies on how to reduce the negative impact of retarders on the strength of gypsum, they have not fundamentally solved the problem

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

[0016] This example takes the preparation of 100 g retarder as an example, and its preparation method is as follows.

[0017] 30% citric acid, 10% tetrapotassium pyrophosphate, 5% sodium alkyl sulfate, 55% edible salt.

[0018] Put the above-mentioned various raw materials into a mixer, and after fully mixing, the retarder for desulfurized building gypsum is obtained. When using, add appropriate amount of water to adjust evenly. The prepared retarder has a strong retarding effect and can significantly prolong the retarding time of the desulfurized building gypsum. The strength loss of desulfurized building gypsum is small. Less dosage and lower cost.

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 relates to a retarder for desulfurization building gypsum. The retarder for the desulfurization building gypsum is made of raw material by proportion: 20-30% of citric acid, 10-15% of tetrapotassium pyrophosphate, 2-5% of sodium alkyl sulfate and 50-68% of edible salt. The retarder for the desulfurization building gypsum is a retarder which is obtained by using the citric acid, the tetrapotassium pyrophosphate and the sodium alkyl sulfate as main coagulation delaying ingredients and adding the edible salt, contains few additives, is good in retarding effect, and simultaneously causes little loss to strength of the gypsum.

Description

technical field [0001] The invention relates to a retarder for desulfurization building gypsum. Background technique [0002] Desulfurization gypsum is solid waste produced after flue gas desulfurization in coal-fired power plants. After dehydration and calcination, it can be made into desulfurization building gypsum. Its technical indicators can meet the requirements of national standards, and its flexural and compressive strengths are higher than national standards. The required value of building gypsum strength is high-quality building gypsum, which can be used as a raw material for various gypsum products. However, the early strength of gypsum materials develops quickly, the setting and hardening time is short, and it will lose fluidity in ten minutes or even a few minutes, especially In the preparation of foam blocks, the optimal combination time of other raw materials affecting foam cannot meet the construction requirements. In order to overcome this deficiency, it is...

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): C04B24/16C04B103/22
CPCC04B40/0039C04B2103/22C04B24/06C04B22/16C04B24/16C04B22/124
Inventor 凌克首凌克翠
Owner GUANGXI HUILONG SCI & TECH CO LTD
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