New type of ecological cement and its prepn and application

A kind of ecological cement, a new type of technology, applied in the direction of cement production, etc., can solve the problems of metal poisoning, air, ground water pollution, ground water waste, etc.

Inactive Publication Date: 2005-04-27
张立省
View PDF0 Cites 24 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In China, the cement industry uses a large number of refractory materials magnesia-chrome bricks. Magnesia-chrome bricks are easy to combine with sulfur to form hexavalent chromium salt compounds during use. The emergence of diseases, even cancer, my country has no relevant standards for the discharge of Pb, Sn, V, Sb, etc. in the cement industry, and there is not enough understanding. This is also a major hidden danger in the cement industry.
[0010] Also in our country, a large amount of industrial waste is stored in the open air, causing serious air, ground, and water pollution, especially the red mud produced in the production of alumina, which has always been a major problem in the world. For a long time, open-air piles have been used The technology of dam storage has seriously affected the surrounding environment, and continues to occupy a large amount of cultivated land, causing waste of groundwater sources. With the increase of alumina production, a large amount of red mud will be continuously discharged; and black A large amount of slag discharged from the metallurgical industry, such as titanium slag

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
  • New type of ecological cement and its prepn and application
  • New type of ecological cement and its prepn and application
  • New type of ecological cement and its prepn and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0104] Embodiment 1: Novel cement and preparation method, calculate with the weight ratio of original material:

[0105] (1) Material F: fly ash 15%, water quenched slag 40%, shale (unroasted) 6.4%, material F additives: calcium sucrose 0.1%, sodium polyphosphate 0.2%, triethanolamine 0.3%, F The batching ratio of materials: molar ratio [Si] / [Ca]=1.0, [Si] / [Al]=2.25.

[0106] In-situ grinding of incoming materials is adopted, and various available materials are added to the grinding mill together with additives for grinding. The particle size is controlled at 3% of the 200 mesh sieve, and the specific surface area is 4300cm 2 / g.

[0107] (2) P material: slag 5%, lime 13%, phosphorus slag 14.3%, P material additives: sodium lignosulfonate 0.2%, active milk of lime 0.5%, sodium borate 0.2%. The batching ratio of P material: molar ratio [Si] / [Ca]=1.0, [Si] / [Al]=2.6.

[0108] The above-mentioned ingredients are processed by in-situ grinding of incoming materials, and various ...

Embodiment 2

[0117] Embodiment 2: Novel cement and preparation method, calculate with the weight ratio of original material:

[0118] (1) F material: fly ash 5%, steel slag 10%, water quenching slag 39%, shale (roasting) 7%, F material additives: sodium lignosulfonate: 0.5%, sodium polyphosphate: 0.1%, Polyvinyl acetate 0.4%. , The batching ratio of F material: molar ratio [Si] / [Ca]=0.5, [Si] / [Al]=3.0.

[0119] The shale in material F adopts pre-roasting process, the roasting temperature is 800-900°C, and the roasting time is 1-2 hours.

[0120] Grind the above ingredients separately and enter into the mixer for mixing, firstly grind and then mix.

[0121] (2) P material: slag 5%, lime 13%, phosphorus slag 13%, P material additives: sodium polyphosphate 0.1%, active Al(OH) 3 l%, active milk of lime 0.9%. Grind the above ingredients separately and enter into the mixer for mixing, firstly grind and then mix.

[0122] Ingredients ratio of P material: molar ratio [Si] / [Ca]=0.5, [Si] / [Al]=...

Embodiment 3

[0134] Embodiment 3, novel cement, calculate with the weight ratio of original material:

[0135] Material F: 25% red mud, 40% water-quenched slag, 6% fly ash

[0136] F material additives: calcium dihydrogen phosphate 3%, sodium aluminate 1%

[0137] P material: 3% slag, 18% phosphorus slag

[0138] P material additives: active lime milk 0.1%, sodium lignosulfonate 0.1%, calcium sucrose 0.4%, calcium chloride 1.4%

[0139] Particle size control of material F: 3% remaining on 200 mesh sieve, specific surface area is 4300cm 2 / g;

[0140] Particle size control of material P: 4% remaining on 200 mesh sieve, specific surface area is 4900cm 2 / g.;

[0141] Ingredients ratio of F material: molar ratio [Si] / [Ca]=1.7, [Si] / [Al]=1.5

[0142] Ingredients ratio of P material: molar ratio [Si] / [Ca]=0.3, [Si] / [Al]=4.0

[0143] Material D: 4% of directing agent, solid content of material D: 78%.

[0144] Material D is made of Al(OH) 3 , strong alkali, water glass and aluminum sulfat...

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
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to view more

Abstract

The new type of ecological cement and its preparation and application belongs to the field of cementing material technology. The materials includes aluminum-rich material F, aluminum-poor material P and guide crystal seed D, and material F and material P are selected from various industrial wastes and natural minerals. Material F has the molar ratio of Si/Ca in 0.5-1.7 and Si/Al in 1.5-3.0, and material P has the molar ratio of Si/Ca in 0.3-1.0 and Si/Al in 1.0-2.6. During use, material F, material P and material D are mixed while adding water to form cementing matter with high strength. The present invention changes industrial wastes into useful material, and has no secondary environmental pollution.

Description

(1) Technical field [0001] The invention relates to an ecological cement and its preparation method and application, belonging to the technical field of cementitious materials. (2) Background technology [0002] All substances that can change from slurry to solid stone-like body under physical and chemical action, and can cement other materials and have a certain mechanical strength, are collectively referred to as cementitious materials, and cementitious materials are divided into hydraulic and non-hydraulic. Two, ordinary portland cement and aluminate cement are hydraulic materials, which can not only harden in air but also harden in water after mixing with water. [0003] Since the birth of Portland cement at the end of the nineteenth century, cement has been used as a building cementing material for more than 100 years. So far, it is still the largest building structure material in the world. After a long history of development and many major changes, the production tec...

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): C04B7/00C04B7/14C04B7/36
CPCY02P40/10
Inventor 祝凤美张立省高方舟张馨方
Owner 张立省
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