Solar thermal power generation absorption/heat storage integrated corundum/sic ceramic material and preparation method thereof

A technology for solar thermal power generation and ceramic materials, which is applied in the field of solar thermal power generation absorption/heat storage integrated corundum/SiC ceramic materials and their preparation, can solve the problems of low thermal conductivity and low strength, and achieves high thermal conductivity, high Strength and high temperature resistance, the effect of long service life

Active Publication Date: 2022-02-01
WUHAN UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Current heat storage materials have defects such as low strength and low thermal conductivity.
[0005] It can be seen that a single heat absorbing material and heat storage material cannot achieve the performance of high heat transfer efficiency and long service life, that is, the performance of high strength, high thermal conductivity and high heat storage density

Method used

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  • Solar thermal power generation absorption/heat storage integrated corundum/sic ceramic material and preparation method thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0033] The preparation method of the solar thermal power generation / heat storage integrated corundum / SiC ceramic material provided in the first embodiment includes the following steps:

[0034] 1) Raw material processing: mill SiC, corundum and kaolin with a fast ball mill for 1 to 3 hours respectively to obtain graded SiC powder, corundum powder, kaolin powder and borax for later use;

[0035] 2) Proportion and mixing of raw materials: according to the mass percentage of each raw material: 50% of SiC powder, 40% of corundum powder, 10% of kaolin powder, 1% of borax, weigh the raw materials, and mix them with a fast ball mill for 1 to 3 hours to obtain a mixed material;

[0036] 3) Granulation and aging: granulation is carried out by spray granulation method, wherein the amount of water added is 5-10% of the mass of the mixture, and then aged for 24-36 hours to obtain a billet;

[0037] 4) Molding: use a hydraulic press to press and shape the stale billet to obtain a green bi...

Embodiment 3

[0051] The preparation method of the integrated corundum / SiC ceramic material for solar thermal power generation and heat storage provided in Example 3 includes the following steps:

[0052] 1) Raw material processing: mill SiC, corundum and kaolin with a fast ball mill for 1 to 3 hours respectively to obtain graded SiC powder, corundum powder, kaolin powder and borax for later use;

[0053] 2) Proportion and mixing of raw materials: according to the mass percentage of each raw material: 90% of SiC powder, 5% of corundum powder, 5% of kaolin powder, 1% of borax, weigh the raw materials, and mix them with a fast ball mill for 1 to 3 hours to obtain a mixed material;

[0054] 3) Granulation and aging: granulation is carried out by spray granulation method, wherein the amount of water added is 5-10% of the mass of the mixture, and then aged for 24-36 hours to obtain a billet;

[0055] 4) Molding: use a hydraulic press to press and shape the stale billet to obtain a green billet;...

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Abstract

The invention provides solar thermal power generation integrated corundum / SiC ceramic material with heat absorption / heat storage and a preparation method thereof. The preparation method comprises: Step 1. Weigh the raw materials according to the mass percentage of each raw material, and perform ball milling and mixing to obtain the mixture; step 2. The spray granulation method is used to granulate, wherein the addition of water is 5-10% of the mass of the mixture, and then stale to obtain a billet; step 3. Use a hydraulic press to press the stale billet to obtain a green body; step 4. Dry the green body; step 5. Use the non-pressure buried powder sintering process to heat the dried green body to 1400-1480°C according to a certain firing process, keep it warm at the firing temperature for 2-3 hours, and let the furnace naturally After cooling, the integrated corundum / SiC ceramic material for solar thermal power generation absorption / heat storage is obtained. The method can be used to prepare ceramic materials with excellent properties such as high thermal conductivity, high heat storage density, high heat transfer efficiency, and high strength.

Description

technical field [0001] The invention belongs to the technical field of new energy materials, and in particular relates to a corundum / SiC ceramic material integrated with solar thermal power generation and heat storage and a preparation method thereof. Background technique [0002] Solar thermal power generation is a technology that converts solar energy into heat energy by concentrating light, and then converts it into kinetic energy to drive steam turbines to generate electricity through heat absorption, heat storage, and thermal power conversion systems. The principle of power generation is as figure 1 As shown, the heat collection system 1 collects and condenses sunlight, and reflects the sunlight to the heat absorber of the heat absorption system 2 to realize the collection of solar energy, and then the heat absorption system 2 transfers the solar energy to the heat storage system 3, and then Using solar energy to drive high-temperature water vapor to push the steam tur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/565
CPCC04B35/565C04B2235/3217C04B2235/349C04B2235/3409C04B2235/96C04B2235/9607
Inventor 吴建锋周军辉徐晓虹
Owner WUHAN UNIV OF TECH
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