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Method for firing high-carbonization-activity cementing material by using solar photo-thermal method

A technology of solar energy and photothermal method, which is applied in the field of building materials, can solve problems such as the inability to realize the preparation of base cementitious materials, the difficulty of achieving solar photothermal method, and the increase in production costs, so as to reduce the phenomenon of sticking to the wall, shorten the firing time, The effect of lowering the firing temperature

Pending Publication Date: 2021-12-07
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the application of solar photothermal technology in the field of building materials has the following problems: First, it is difficult to achieve a higher firing temperature in the solar photothermal method, and cannot achieve γ-C 2 Preparation of S-based cementitious materials; Second, the solar photothermal method requires the use of a special solar receiver, and the liquid phase produced by traditional building materials during the high-temperature firing process will bond in the receiver during the cooling process, resulting in damage to the receiver, leading to a significant increase in production costs

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  • Method for firing high-carbonization-activity cementing material by using solar photo-thermal method
  • Method for firing high-carbonization-activity cementing material by using solar photo-thermal method
  • Method for firing high-carbonization-activity cementing material by using solar photo-thermal method

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preparation example Construction

[0034] The present invention has no special limitation on the preparation method of the raw meal, and the raw meal can be obtained by grinding and mixing the corresponding preparation raw materials according to the proportion according to the method well known in the art. The present invention has no special limitation on the process of grinding and mixing, which can be adjusted according to actual needs according to the process well known in the art.

[0035] In the present invention, it is preferable to pour the carbonized hardening cementitious material raw material into the receiver, focus the sunlight in the receiver through the concentrator, use the focused solar spot to heat the raw material, and raise the temperature to the calcination temperature for calcination. The present invention has no special limitation on the light concentrator and the receiver, and any corresponding equipment well known in the art may be used. In the present invention, there is no special lim...

Embodiment 1

[0041] The raw materials used in this embodiment are high iron and high aluminum solid waste, calcareous solid waste and sandstone with calcium hydroxide as the main component, and the specific components are shown in Table 1;

[0042] Calcium solid waste, sandstone and high-iron and high-alumina solid waste were ground and mixed according to the mass ratio of 63.22:17.25:19.53 to obtain raw meal. The specific composition is shown in Table 2;

[0043]Pour the raw meal into the receiver, focus the sunlight in the receiver through the concentrator to heat the raw meal, and raise the temperature from room temperature to 1280°C within 15 minutes, within the fluctuation range of the temperature ±20°C, carry out After calcination for 1 hour, the concentrated heating is stopped, and after the material is cooled and naturally pulverized, the carbonized hardening cementitious material clinker is obtained.

[0044] 1) Calculate according to Table 1, the solid-phase chemical composition ...

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Abstract

The invention provides a method for firing a high-carbonization-activity cementing material by using a solar photo-thermal method, and belongs to the technical field of building materials. The proportion of raw materials is accurately designed, and the content of aluminum and iron in the raw material components is increased on the basis that the self-pulverization characteristic of the material is not affected; and high aluminum and iron content in the calcination process can increase the proportion of the liquid phase, and more liquid phase can transform the reaction during the calcination process from a solid-solid solid-phase reaction to a solid-liquid reaction, the reaction efficiency is significantly improved, furthermore, the sintering temperature is reduced, the sintering time is shortened, and the solar photothermal method is used to prepare the high-carbonization-activity cementing material.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to a method for burning high-carbonized active gelling materials by utilizing solar photothermal method. Background technique [0002] The production of cement, the most commonly used building material, emits a large amount of carbon dioxide. The main sources of carbon emissions are the decomposition of calcareous raw materials and the burning of fossil fuels. With the intensification of the greenhouse effect in recent years, it is imperative to reduce the overall carbon emissions of the cement industry. How to apply clean energy to the preparation of building materials has gradually become a hot spot for development. [0003] With the development of solar thermal technology in recent years, the solar energy can be efficiently converted into heat energy by concentrating solar energy on the receiver through the concentrator, and the high temperature above 1000°C can be obt...

Claims

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Application Information

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IPC IPC(8): C04B7/44C04B7/06F24S23/00
CPCC04B7/44C04B7/06F24S23/00Y02E10/44
Inventor 王发洲刘志超王志峰
Owner WUHAN UNIV OF TECH