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

Method for sintering belite-calcium sulphoaluminate-calcium sulphosilicate cement at low temperature and product thereof

A calcium sulfoaluminate, low-temperature firing technology, applied in the field of materials, can solve the problems of complex process, short holding time, and low calcination temperature of sulfur-containing calcium silicate cement, so as to reduce the initial cost, increase the environmental pressure, and increase the calcination temperature. low effect

Active Publication Date: 2017-06-30
YANCHENG INST OF TECH
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Purpose of the invention: In order to meet the requirements of sustainable development, the present invention provides a low-temperature fired belite-calcium sulfoaluminate- Calcium sulfosilicate cement method and its products, the method only needs to be calcined once, the holding time is short, the calcining temperature is low, and the comprehensive utilization of waste is realized

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
  • Method for sintering belite-calcium sulphoaluminate-calcium sulphosilicate cement at low temperature and product thereof
  • Method for sintering belite-calcium sulphoaluminate-calcium sulphosilicate cement at low temperature and product thereof
  • Method for sintering belite-calcium sulphoaluminate-calcium sulphosilicate cement at low temperature and product thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] The ratio of raw materials and water consumption designed in this embodiment are as shown in Table 2.

[0025] Table 2 Embodiment 1 raw material ratio and water consumption

[0026] Example 1 coal gangue Tailings bauxite Desulfurization gypsum sugar filter mud water Mass / g 203.6 118.4 65.4 612.6 373

[0027] The specific implementation steps are as follows:

[0028] 1) Mixing: Weigh the raw materials according to the ratio and place them in a planetary mill, add water, grind for 15 minutes, take out the slurry and pour it into the mold, demould after molding, and obtain a block sample;

[0029] 2) Hydrothermal synthesis: put the above sample in a digital display constant temperature stirring circulation curing box that has been heated to a set temperature of 60°C, take it out and cool it after constant temperature curing for 9 hours;

[0030] 3) Calcination: After the cooled block sample is crushed, it is placed in a high-temperature ...

Embodiment 2

[0035] The ratio of raw materials and water consumption designed in this embodiment are as shown in Table 4.

[0036] Table 4 embodiment 2 raw material ratio and water consumption

[0037] Example 2 Pile residual slurry Tailings bauxite Phosphogypsum Carbide slag water Mass / g 538.4 205.1 69.2 187.3 150

[0038] The specific implementation steps are as follows:

[0039] 1) Mixing: Weigh the raw materials according to the ratio and place them in a planetary mill, add water, grind for 15 minutes, take out the slurry and pour it into the mold, demould after molding, and obtain a block sample;

[0040] 2) Calcination: Place the block sample in a high-temperature furnace, calcinate at 750°C for 80 minutes, take it out for rapid cooling, and grind it with a ball mill until the specific surface area is 370m 2 / kg to get Belite-calcium sulfoaluminate-calcium sulfosilicate cement.

[0041] The measured properties of the cement are shown in Table 5. ...

Embodiment 3

[0045] The ratio of raw materials and water consumption designed in this embodiment are as shown in Table 6.

[0046] Table 6 embodiment 3 raw material ratio and water consumption

[0047]

[0048]

[0049] The specific implementation steps are as follows:

[0050] 1) Mixing: Weigh the raw materials according to the proportion and place them in the planetary mill, add water, grind for 20 minutes, take out the slurry and pour it into the mold, demould after molding, and obtain a block sample;

[0051]2) Hydrothermal synthesis: Place the above sample in an autoclave that has been heated to a set temperature of 130°C, and take it out to cool after constant temperature curing for 4.5 hours;

[0052] 3) Calcination: After the cooled block sample is crushed, it is placed in a high-temperature furnace, calcined at 1050°C for 120 minutes, taken out for rapid cooling, and ground by a ball mill until the specific surface area is 390m 2 / kg to get Belite-calcium sulfoaluminate-ca...

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 method for sintering belite-calcium sulphoaluminate-calcium sulphosilicate cement at low temperature. The method comprises the following steps: a) mixing industrial waste residue and industrial gypsum, adding water according to water cement ratio of 0.3-0.41 and mixing the materials, grinding a mixture for 15-60 min and dumping the slurry in a die, demoulding after moulding to obtain a sample; b) performing constant temperature maintenance on the above sample at the temperature of 60-150 DEG C for 3-9 hours; preferably at the temperature of 80-130 DEG C for 3-4 hours; and c) calcining the material at the temperature of 750-1150 DEG C for 60-120 min; taking the calcined sample from a high temperature furnace, rapidly cooling the material; and grinding the material to obtain the product. According to the invention, limestone is not used, a lot of carbon dioxide is not generated, environment pressure is increased, on the other hand, calcining temperature is low, and the energy consumption is low. The method has the advantages of low carbon and environment protection.

Description

technical field [0001] The invention belongs to the field of material technology, and relates to a preparation method of Belite-calcium sulfoaluminate-calcium sulfosilicate cement and its products, in particular to a low-temperature fired Belite-calcium sulfoaluminate-sulfur silicon Calcium acid cement method and products thereof. Background technique [0002] Today's world is developing rapidly. While people's material life is being improved, people are more and more concerned about the earth on which we live. As the most widely used building material—cement, it plays an important role in the progress of human society and social and economic development. It also produces high energy and resource consumption and greenhouse gas emissions. Usually, ordinary Portland cement has a calcium oxide content of about 66%, which accounts for 50-70% of the alite mineral in the clinker, that is, the formation of tricalcium silicate The temperature is about 1450°C. The mineral contains ...

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): C04B7/24C04B7/36
CPCC04B7/24C04B7/36Y02P40/10Y02P40/121
Inventor 郭伟王春李船
Owner YANCHENG INST OF TECH
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