Inorganic cementing material and preparation method thereof

An inorganic cementitious material and cementitious material technology, applied in the field of building materials, can solve the problems of less fly ash consumption, high fly ash quality requirements, poor product performance, etc., achieve less greenhouse gas emissions and improve production Benefits and equipment use efficiency, good applicability

Inactive Publication Date: 2016-10-05
HUAZHI ENERGY CONSERVATION HK
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing technology of using fly ash to prepare inorganic cementitious materials has the problems of small amount of fly ash, high requirements on the quality of fly ash and poor product performance.

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
  • Inorganic cementing material and preparation method thereof
  • Inorganic cementing material and preparation method thereof
  • Inorganic cementing material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The batch contains the following ingredients in parts by mass:

[0026] 80 parts of fly ash

[0027] Quicklime calculated as CaO 20 parts

[0028] Sodium hydroxide 0.5 parts

[0029] Weigh fly ash, quicklime, and sodium hydroxide according to the above mass ratio, and grind them together until the fineness is 45 μm and the sieve residue is 5.2% of the batching material; pour the batching material into the mixer, add 45 parts of water, stir for 3 minutes, and age After melting for 2 hours, use a ball forming disc to form pellets with a diameter of 8 to 16 mm; steam the pellets in a steam curing box at 90°C for 10 hours to obtain steamed feed, calcinate the steamed feed in a small kiln at 750°C for 120 minutes, and then blow it to cool. Clinker: take 90 parts of clinker and 10 parts of anhydrous gypsum to grind together until the specific surface area is 350m 2 / kg to prepare an inorganic gelling material.

Embodiment 2

[0031] The batch contains the following ingredients in parts by mass:

[0032] 75 parts of fly ash

[0033] Quicklime calculated as CaO 25 parts

[0034] Sodium carbonate 1.4 parts

[0035] Weigh fly ash, quicklime, and sodium carbonate according to the above mass ratio, and grind them together until the fineness is 45 μm and the sieve residue is 9.8%; pour the batch into a mixer, add 48 parts of water, stir for 3 minutes, and age After 3 hours, extrude into a material block of 240mm×115mm×53mm, steam the material block in a steam curing box at 90°C for 16 hours to obtain the steamed nutrient, calcinate the steamed nutrient in a small kiln at 750°C for 90 minutes, and then cool it naturally in the air to get cooked material; use a crusher to crush the clinker into particles smaller than 16mm, take 93 parts of clinker and 7 parts of hemihydrate gypsum to grind together until the specific surface area is 425m 2 / kg to prepare an inorganic gelling material.

Embodiment 3

[0037] The batch contains the following ingredients in parts by mass:

[0038] 70 parts of fly ash

[0039] Quicklime calculated as CaO 30 parts

[0040] Sodium hydroxide 1.0 parts

[0041] Weigh fly ash, quicklime, and sodium hydroxide according to the above mass ratio, and grind them together until the fineness is 45 μm and the sieve residue is 5.8% of the batching material; pour the batching material into the mixer, add 50 parts of water, stir for 2 minutes, and age After melting for 2.5 hours, use a ball forming disc to form pellets with a diameter of 8-16mm; steam the pellets in a steam curing box at 95°C for 8 hours to obtain steamed feed, and then calcine the steamed feed in a small kiln at 800°C for 60 minutes and then blow it to cool Obtain clinker; take 93 parts of clinker and 7 parts of dihydrate gypsum to grind together until the specific surface area is 495m 2 / kg to prepare an inorganic gelling material.

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to view more

Abstract

The invention provides an inorganic cementing material and a preparation method thereof. The cementing material is obtained by jointly grinding grog obtained by steam curing and calcinating material blocks or material balls prepared from coal ash, lime, an exciting agent and water and gypsum. The preparation method includes the steps that by mass, 65-80 parts of coal ash, 20-35 parts of effective CaO of lime and 0.5-2.0 parts of the exciting agent are jointly ground into a batch mixture with the degree of fineness being 45 microns and the residue on sieve being smaller than 10%, 15-50 parts of water is added, the mixture is mixed to be uniform, then aging is conducted for 2-3 hours, the material blocks or the material balls are subjected to steam curing for 8-16 hours at the temperature of 90-98 DEG C after being formed, then calcinated for 15-120 minutes at the temperature of 750-1,000 DEG C and then air cooled or cooled in air, and the grog is obtained; 90-95 parts of the grog and 5-10 parts of gypsum are jointly ground till the specific area is 350-500 m<2>/kg, and the inorganic cementing material is prepared. Low-quality coal ash which is high in carbon content can be used as the main material of the inorganic cementing material, calcinating temperature and heat consumption are low, and a product has the advantages of being high in setting speed and hardening speed, high in long-term strength and good in water resistance and sulfate resistance.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to an inorganic gelling material with fly ash and lime as main raw materials and a preparation method thereof. Background technique [0002] Cement, as the most widely used cementitious material in production and application, is not only a product with high resource consumption and high energy consumption, but also a product with high greenhouse gas emissions and high pollution. Problems such as excessive consumption of renewable resources have long attracted people's attention, and it is urgent to seek new raw material resources and alternative or supplementary new preparation methods. Thermal power generation enterprises discharge a large amount of fly ash every year. Although a large part of the fly ash discharged by the dry method of the power plant has been used in building materials, rubber, agricultural fertilizer industry and civil transportation engin...

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): C04B11/28
CPCC04B7/26Y02P40/10
Inventor 方永浩龚泳帆朱晨辉
Owner HUAZHI ENERGY CONSERVATION HK
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