A kind of industrial high temperature heat storage concrete material and its preparation method

A concrete and industrial technology, applied in the field of industrial high-temperature heat storage concrete materials and their preparation, can solve the problems of low phase transition temperature, complex preparation process, poor heat storage capacity, etc. , the effect of improving the service life and stability

Active Publication Date: 2017-10-24
山西中齐锐能高温材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although there are many heat storage materials in the above-mentioned patents and literature reports, there are certain deficiencies: some have complex preparation process and high cost; some heat storage materials have low phase transition temperature and narrow application range; some have low heat storage capacity Poor; the present invention adopts chemical synthesis method to prepare nano heat storage composite material, and applies it to heat storage concrete, which combines the advantages of the two materials and has great application potential

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The weight ratio and particle size of raw materials are: basalt aggregate 30%, particle size 5-20mm; bauxite clinker aggregate 45%, particle size 1-5mm; silica sol 5%, all passed through 80μm negative pressure sieve; 200 mesh silicon Micropowder 8%; 200 mesh activated alumina powder 3%; 200 mesh silicon carbide powder 1%; NaNO 3 / Al 2 o 3 8% of composite capsule particles; the addition of composite water reducer accounts for 0.7% of the total mass of the aforementioned raw materials.

[0032] After the above raw materials are uniformly dry-mixed, add 6% water, mix evenly, place in a steel mold, place at room temperature for 24 hours, demould, and vibrate on a vibrating table for 30-60s. Dry and cure at 20-25°C for 72 hours, and then bake at 105-120°C for 24 hours to obtain the sample.

[0033] The density of heat storage material is 2.67g / cm 3 After testing, the compressive strength of the material is 53.2MPa, the flexural strength is 6.5MPa, and the volumetric heat...

Embodiment 2

[0035] The weight ratio and particle size of the raw material composition are: basalt aggregate 30%, particle size 5-20mm; bauxite clinker aggregate 45%, particle size 1-5mm; silica sol 10%, all passed through 80μm negative pressure sieve; 200 mesh silicon Micropowder 3%; 200 mesh activated alumina powder 3%; 200 mesh silicon carbide powder 1%; NaNO 3 / Al 2 o 3 8% of composite capsule particles; the addition of composite water reducing agent accounts for 1.0% of the total mass of the aforementioned raw materials.

[0036] After the above raw materials are uniformly dry-mixed, add 6% water, mix evenly, place in a steel mold, place at room temperature for 24 hours, demould, and vibrate on a vibrating table for 30-60s. Dry and cure at 20-25°C for 72 hours, and then bake at 105-120°C for 24 hours to obtain the sample.

[0037] The density of heat storage material is 2.66g / cm 3 After testing, the compressive strength of the material is 56.3MPa, the flexural strength is 6.8MPa, ...

Embodiment 3

[0039] The weight ratio and particle size of the raw material composition are: basalt aggregate 45%, particle size 5-20mm; bauxite clinker aggregate 20%, particle size 1-5mm; silica sol 5%, all passed through 80μm negative pressure sieve; 200 mesh silicon Micropowder 4%; 200 mesh activated alumina powder 8%; 200 mesh silicon carbide powder 8%; NaNO 3 / Al 2 o 3 10% of composite capsule particles; the addition of composite water reducer accounts for 0.3% of the total mass of the aforementioned raw materials.

[0040] After the above raw materials are uniformly dry-mixed, add 6% water, mix evenly, place in a steel mold, place at room temperature for 24 hours, demould, and vibrate on a vibrating table for 30-60s. Dry and cure at 20-25°C for 72 hours, and then bake at 105-120°C for 24 hours to obtain the sample.

[0041] The density of heat storage material is 2.63g / cm 3 After testing, the compressive strength of the material is 52.4MPa, the flexural strength is 6.6MPa, and the...

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Abstract

The invention relates to a preparation method of a high-temperature heat accumulation concrete material. The heat accumulation material is prepared from basalt as coarse aggregate, bauxitic clinker as fine aggregate, silica sol as a cementation material, silicon micro-powder, active alumina micro-powder, silicon carbide powder and NaNO3 / Al2O3 composite capsule particles. The method comprises the following steps: carrying out dry mixing on above raw materials until uniformity, adding 6-8% of water, uniformly mixing, placing the obtained mixture in a steel die, shaking on a shake table for 30-60s, standing at normal temperature for 24h, demolding, carrying out dry curing at 20-25DEG C for 72h, and baking at 105-120DEG C for 24h to obtain the industrial high-temperature heat accumulation concrete material. The materials are reasonably selected, and the preparation method is advanced, so the high-temperature heat accumulation material is produced, the heat accumulation and heat discharge efficiency and other comprehensive performances of the material are greatly improved, and the problem of device corrosion induced by easy leakage in molten salt phase transition is solved.

Description

technical field [0001] The invention relates to the field of energy storage materials, in particular to an industrial high-temperature heat storage concrete material and a preparation method thereof. Background technique [0002] Energy is an important material basis for the survival and development of human society. At present, the energy consumed in my country mainly comes from non-renewable energy sources such as coal, oil, and natural gas. With the development of my country's economy, the demand for energy is increasing. Building a stable, economical, clean and secure energy supply system is facing major challenges. As a big manufacturing country, our country needs to consume a lot of energy every year, especially in cement, steel, metallurgy and other industries. However, in these industries, due to the difficulty of recycling, a large amount of heat energy is discharged into the atmosphere in vain, resulting in a great waste of energy. The selection of heat storage ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/26C09K5/12
Inventor 周卫兵朱教群李儒光程晓敏李元元原郭丰唐文学
Owner 山西中齐锐能高温材料有限公司
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