A heat-storing black body cement and its preparation method

A technology of black body and cement, which is applied in the field of black body cement and its preparation, can solve the problems of insufficient heat storage and difficulty in increasing the volume of ceramic regenerators, and achieve good thermal conductivity, stable heat storage capacity and radiation capacity, and enhanced heat. The effect of passing

Active Publication Date: 2016-06-29
新疆天山水泥有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The purpose of the present invention is to overcome the deficiencies in the prior art, to overcome the problem that the volume of the ceramic heat storage body in the sensible heat storage medium is difficult to increase in the heat storage process of utilizing natural sunlight, and the heat storage is insufficient, and to solve the solar energy utilization process The problem of material selection and preparation for heat storage in the sun during the day and heat release for a long time at night

Method used

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  • A heat-storing black body cement and its preparation method

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Effect test

Embodiment 1

[0038] A heat-storing blackbody cement and a preparation method thereof:

[0039] A. Black body cement ingredients: Portland cement clinker, dihydrate gypsum, ferrite powder, and cordierite powder are mixed according to the mass percentage of Portland cement clinker 75%, dihydrate gypsum 2.4%, and ferrite powder 10% %, cordierite powder 12.6% metering.

[0040] B. Add each raw material into the ball mill according to the metering ratio and grind at a speed of 45r / min. The specific surface area of ​​the prepared cement is 3560m 2 / kg.

[0041] C. Through the above-mentioned batching scheme and grinding process, the setting time of the prepared black body cement is normal, among which the initial setting time is 243min, the final setting time is 294min, the water consumption of standard consistency is about 28%, and the compressive strength for 3 days is 27.3MPa, 28 The daily strength is 43.2MPa, and the stability is qualified.

[0042] D, the clean slurry of the black body ...

Embodiment 2

[0044] A. Black body cement ingredients: Portland cement clinker, dihydrate gypsum, ferrite powder, and cordierite powder are mixed according to mass percentage Portland cement clinker 80%, dihydrate gypsum 3%, ferrite powder 8 %, cordierite powder 9% metering.

[0045] B. Add each raw material into the ball mill according to the metering ratio and grind at a speed of 45r / min. The specific surface area of ​​the prepared cement is 3650m 2 / kg.

[0046] C. Through the above-mentioned batching scheme and grinding process, the setting time of the prepared blackbody cement is normal, the standard consistency water consumption is about 28%, the initial setting time is 238min, the final setting time is 274min, the strength of 3 days is 28.2MPa, and the strength of 28 days is 44.3 MPa, the stability is qualified.

[0047] D, the clean slurry of the black body cement prepared by the above process. After preparing the sample according to the requirements of the vacuum blackbody radi...

Embodiment 3

[0049] A. Blackbody cement ingredients: Portland cement clinker, dihydrate gypsum, graphite powder, and cordierite powder are prepared according to the mass percentage of Portland cement clinker 80%, dihydrate gypsum 3%, ferrite powder 3%, Cordierite powder 14% metered.

[0050] B. Add each raw material into the ball mill according to the metering ratio and grind at a speed of 45r / min. The specific surface area of ​​the prepared cement is 3680m 2 / kg.

[0051] C. Through the above-mentioned batching scheme and grinding process, the setting time of the prepared black body cement is normal, the water consumption of the standard consistency is about 29%, the initial setting time is 247min, the final setting time is 286min, the strength of 3 days is 29.2MPa, and the strength of 28 days is 45.4 MPa, the stability is qualified.

[0052] D, the clean slurry of the black body cement prepared by the above process. After sample preparation according to the requirements of the vacuum...

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Abstract

The invention discloses a heat-storing blackbody cement and a preparation method thereof, which are characterized in that: 75.0-85.0% Portland cement clinker, 2.4-4.0% dihydrate gypsum, 2.0-10.0% black colorant, and 5.0-15.0% cordierite powder composition and mass percentage ratio to take each raw material; adopt dry ball milling process, put the raw material into the ball mill, the rotating speed of the ball mill drum is 43-47r / min, and the residence time of the raw material in the ball mill is 29 ~31 minutes, after the raw materials are mixed by ball milling, the heat-storing black body cement can be obtained. The prepared blackbody cement has high color blackness, high blackbody radiation coefficient and large heat storage coefficient, and can be used as a material for large-scale heat storage engineering after being poured into a large-volume block solid; the blackbody cement prepared by the present invention is a kind of heat storage Cement material with good performance, heat radiation and heat diffusion.

Description

technical field [0001] The invention belongs to cement and a preparation method thereof, and relates to heat-storing blackbody cement and a preparation method thereof. The black body cement is obtained by mixing Portland cement clinker, dihydrate gypsum, colorant and infrared radiation material in a certain proportion, and grinding it through a ball mill. The cement has high blackness, good thermal radiation and thermal diffusion properties, It has a large heat storage coefficient and can be used as a material for large-scale heat storage projects after pouring into a large block solid, such as heat storage materials for solar thermal power generation systems. Background technique [0002] Energy issues are a major issue facing human society in the world today. In my country, with the development of the national economy, energy security issues have become a major constraint on my country's economic development. Therefore, the country has issued a large number of incentive po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/14
Inventor 朱晓燕王鲁岩包文忠张黎靳冬民赵文新
Owner 新疆天山水泥有限责任公司
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