Sodium silicate surface co-sintered light ceramsite and preparation method thereof

A surface-assisted sintering and lightweight ceramsite technology, which is applied in the field of new building materials, can solve the problems of reducing the heat and sound insulation effect of ceramsite, reducing the sintering temperature of ceramsite, and increasing the specific gravity of ceramsite, so as to achieve low cost and improve molding Strength, the effect of high strength of ceramsite

Active Publication Date: 2015-01-21
SHAANXI UNIV OF SCI & TECH
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sintering aid is mixed evenly with the raw materials, which reduces the sintering temperature of the ceramsite, makes the ceramsite dense, increases the specific gravity of the ceramsite, reduces the heat and sound insulation effect of the ceramsite and limits the use of the ceramsite
Although inflammable ceramsite solves the problems of water absorption and heat insulation and sound insulation of ceramsite, it requires that the raw material for its production must be inflammable raw material, which is rare in nature. On the other hand, ceramsite production is at high temperature. The hollow sphere formed by puffing has high energy consumption and low strength of ceramsite. The performance and size of the product are guaranteed by the performance of the raw material, and the process is difficult to control

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
  • Sodium silicate surface co-sintered light ceramsite and preparation method thereof
  • Sodium silicate surface co-sintered light ceramsite and preparation method thereof
  • Sodium silicate surface co-sintered light ceramsite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] see figure 1 with 2 A method for preparing lightweight ceramsite assisted by sintering on the surface of sodium silicate comprises the following steps:

[0022] 1) Take the raw materials in terms of mass percentage: 0%-65% of fly ash, 35%-95% of clay, 0-65% of ceramic waste and 0-65% of clay tailings; mix the raw materials and perform ball milling , dry and finely grind the blanks for later use; wherein the blanks with a particle size of less than 65 μm account for more than 90% of the total mass of the blanks;

[0023] 2) Mixing the blank prepared in step 1) and a pore-forming agent with a particle size of less than 0.125mm at a mass ratio of 100:(5-20) to obtain a mixture;

[0024] 3) Put the mixed material prepared in step 2) into the sugar coating machine for balling treatment to obtain raw meal balls. During the balling process, add the mixed material intermittently according to the balling situation, and in the balling process, add the mixed material with a conc...

Embodiment 1

[0034] 1) Take the raw materials in terms of mass percentage: 65% of fly ash and 35% of clay; after mixing the raw materials, carry out ball milling, drying and grinding to obtain a billet for subsequent use; wherein the billet with a particle size less than 65 μm accounts for 10% of the total mass of the billet More than 90;

[0035] 2) mixing the blank prepared in step 1) with a pore-forming agent with a particle size of less than 0.125 mm at a mass ratio of 100:5 to obtain a mixture;

[0036] 3) Put the mixed material prepared in step 2) into the sugar coating machine for balling treatment to obtain raw meal balls. During the balling process, add the mixed material intermittently according to the balling situation, and in the balling process, add the mixed material with a concentration of 5 % sodium silicate aqueous solution is intermittently sprayed onto the mixture, and the content of the sodium silicate aqueous solution in the obtained raw meal balls accounts for 8% of t...

Embodiment 2

[0041] 1) Take the raw materials in terms of mass percentage: a mixture of 35% clay and 65% ceramic waste; after mixing the raw materials, perform ball milling, drying and grinding to obtain a blank for later use; wherein the blank with a particle size of less than 65 μm accounts for the total mass of the blank More than 90% of;

[0042] 2) mixing the blank prepared in step 1) with a pore-forming agent with a particle size of less than 0.125mm at a mass ratio of 100:6 to obtain a mixture;

[0043] 3) Put the mixed material prepared in step 2) into the sugar coating machine for balling treatment to obtain raw meal balls. During the balling process, add the mixed material intermittently according to the balling situation, and in the balling process, add the mixed material with a concentration of 8 % sodium silicate aqueous solution is intermittently sprayed onto the mixture, and the content of the sodium silicate aqueous solution in the obtained raw meal balls accounts for 9% of...

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
particle sizeaaaaaaaaaa
densityaaaaaaaaaa
densityaaaaaaaaaa
Login to view more

Abstract

The invention relates to sodium silicate surface co-sintered light ceramsite and a preparation method thereof. The light ceramsite and the preparation method have the beneficial effects that by spraying a 5-25% sodium silicate solution step by step, during drying, sodium ions dissolved in water diffuse toward the surfaces along with the moisture and gather on the shells of surfaces of raw meal nodules, the sodium ions on the surface layers react with other matters in the sintering process to form fusible matters, thus playing a role of co-sintering agents, and the content of the sodium ions in the co-sintering agents below the surface layers of the raw meal nodules is very low; the ceramsite sintered at a surface layer sintering temperature has relatively low water absorption but the unsintered density of core regions below the surface layers is lower, so that the light ceramsite with low water absorption and low overall density is finally obtained; the problems that the ceramsite not only requires low water absorption and high strength but also requires light volume weight are solved; the preparation method of the sodium silicate surface co-sintered light ceramsite is simple in process and safe to operate, can be used for volume production and is low in cost.

Description

technical field [0001] The invention belongs to the technical field of new building materials, and in particular relates to a lightweight ceramsite sintered on the surface of sodium silicate and a preparation method thereof. Background technique [0002] Ceramsite is made of clay, industrial waste, waste, tailings, low-quality shale, etc., with a small amount of binder and additives, and is made into lightweight aggregate through traditional processes such as mixing, ball forming and high-temperature sintering. It is a high-quality green building material with the characteristics of light bulk density, high strength, low thermal conductivity, high refractoriness, heat preservation, antifreeze, corrosion resistance, impact resistance, earthquake resistance, wear resistance and no radiation (no harmful substances). Since the water absorption performance of ceramsite seriously affects the workability and cementation ability of ceramsite concrete, it is necessary to add sinterin...

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): C04B33/13C04B33/132C04B33/135
CPCC04B18/025C04B35/6316C04B38/00C04B33/135C04B33/1324C04B33/132C04B18/027Y02P40/60
Inventor 任强魏腾跃武秀兰何选盟王保兴霍哲哲
Owner SHAANXI UNIV OF SCI & TECH
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