Laying method for stably separating out mullite phase-containing brick crystals

Abstract

The invention discloses a laying method for stable precipitation of mullite phase-containing brick crystals, and belongs to the technical field of brick laying methods. According to the technical scheme, clean water is sprayed to pre-laid mullite bricks, and after crystals in materials are stably separated out, the mullite bricks are laid. According to the method, the construction time and filling materials can be saved, the laying quality problem caused by the chemical performance and the physical performance of the mullite-phase-containing brick material is avoided, and meanwhile it is guaranteed that due to the fact that the temperature interval is defined in the mullite-phase-containing brick material laying process, labor input is saved.

Description

Technical Field

[0001] The present invention belongs to the technical field of brick laying methods, and particularly relates to a laying method for stably precipitating crystals of bricks containing mullite phase. Background Art

[0002] The construction method of traditional refractory bricks is that after the construction of the lower layer of castable is completed, layer-by-layer laying is carried out by dry-laying method, and the laying thickness meets the design and on-site construction requirements. After the refractory bricks are laid, the gaps between the bricks are filled with refractory cotton or dry refractory powder. Usually, the construction of the brick joint filling part is relatively difficult. For the construction of new refractory bricks containing mullite phase, the previous method is habitually adopted in the industry. Without considering the properties of mullite, when the crystals are not completely precipitated, it is not easy to be flat during laying, and the quality is difficult to control and guarantee. The construction method follows the relevant requirements in the "Code for Acceptance of Construction Quality of Petrochemical Furnace Laying Engineering" SH / T3534-2012. However, after laying new refractory bricks containing mullite phase according to the traditional refractory brick construction method and strengthening by filling the gaps between the bricks with refractory cotton, the overall appearance is poor, and the uncontrollable factors regarding quality increase, and at the same time, the construction efficiency will also be affected. Summary of the Invention

[0003] The present invention provides a laying method for stably precipitating crystals of bricks containing mullite phase, which can save construction time and filling materials, avoid quality problems in laying due to the chemical and physical properties of bricks containing mullite phase, and at the same time ensure the definition of the temperature range during the laying of mullite bricks and save labor input.

[0004] The technical solution of the present invention is as follows:

[0005] For the laying method of stably precipitating crystals of bricks containing mullite phase, for the pre-laid mullite bricks, clean water is sprayed to make the crystals in the material stably precipitate, and then the mullite bricks are laid.

[0006] Preferably, the clean water is slightly acidic or neutral, and the pH value range is 5.5 ≤ pH ≤ 7.

[0007] Preferably, the clean water is slightly acidic and the pH value range is 5.5 ≤ pH ≤ 6.5.

[0008] Preferably, 0.65 m of clean water is sprayed per square meter. 3 .

[0009] Preferably, the temperature range of the sprayed clean water is 5 - 32 °C.

[0010] Preferably, the temperature of the sprayed clean water is 25 °C.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. The present invention sprays clean water at the most suitable spraying temperature for mullite-phase materials and lays it within this temperature range. By utilizing the chemical composition of mullite materials and adding clean water, crystals in the mullite materials are stably precipitated, achieving the purpose of better laying construction flatness and extensibility. At the same time, the filler cotton used in laying construction is reduced, improving construction efficiency and enhancing both the laying quality and the economic benefits of construction.

[0013] 2. The present invention can save construction time and filling materials, avoid quality problems during laying due to the chemical and physical properties of bricks containing mullite phase, and at the same time ensure the definition of the temperature range during the laying of mullite bricks and save labor input.

[0014] 3. Uniformly spray 0.65 m 3 of slightly acidic or neutral clean water (5.5 ≤ pH ≤ 7) per square meter, which can improve the construction efficiency by about 30%. Specific Embodiments

[0015] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0016] It should be noted that the extensibility of bricks containing mullite phase after laying is greatly affected by temperature. It is meaningful to discuss the extensibility at the same temperature. During the actual construction process, the construction temperature is greatly affected by the environment, and the spraying temperature of clean water is kept consistent with the actual construction temperature.

[0017] Example 1

[0018] This embodiment provides a laying method for stably precipitating crystals in bricks containing mullite phase, specifically as follows: At a temperature of 25 °C, for all pre-laid mullite bricks, uniformly spray 0.65 m 3 of slightly acidic clean water with a pH of 6 per square meter. After the crystals in the material are stably precipitated, the extensibility of the mullite bricks is 1.5‰ of the unit surface area. Then, the mullite bricks are laid, and the construction efficiency is 6 m 2 / h, compared with the construction efficiency of 3.5 m 2 / h, the construction efficiency of the present invention is increased by 71%. Based on the material elongation rate calculation, the average material consumption is saved by 30%. The method of the present invention makes the flatness and elongation of the mullite material better during laying. At the same time, it also reduces the filling cotton used in the laying construction and improves the construction efficiency, improving both the laying quality and the economic benefits of the construction.

[0019] Example 2

[0020] This example provides a laying method for stably precipitating crystals of brick materials containing mullite phase, specifically as follows: at a temperature of 25°C, for all pre-laid mullite bricks, 0.65 m 3 of neutral clean water with a pH of 7 is evenly sprayed per square meter. After the crystals in the material are stably precipitated, the elongation rate of the mullite brick is 1.3‰ of the unit surface area, and then the mullite brick is laid.

[0021] Example 3

[0022] This example provides a laying method for stably precipitating crystals of brick materials containing mullite phase, specifically as follows: at a temperature of 25°C, for all pre-laid mullite bricks, 0.65 m 3 of alkaline clean water with a pH of 7.8 is evenly sprayed per square meter. After the crystals in the material are stably precipitated, the elongation rate of the mullite brick is 1.1‰ of the unit surface area, and then the mullite brick is laid.

[0023] Example 4

[0024] This example provides a laying method for stably precipitating crystals of brick materials containing mullite phase, specifically as follows: at a temperature of 5°C, for all pre-laid mullite bricks, 0.65 m 3 of slightly acidic clean water with a pH of 6 is evenly sprayed per square meter. After the crystals in the material are stably precipitated, the elongation rate of the mullite brick is 0.5‰ of the unit surface area, and then the mullite brick is laid.

[0025] Although the present invention has been described in detail by combining preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, those of ordinary skill in the art can make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions should all be within the scope covered by the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A laying method for stably precipitating crystals of bricks containing mullite phase, characterized in that, For pre-laid mullite bricks, clean water is sprayed to allow the crystals in the material to precipitate stably, and then the mullite bricks are laid.

2. The laying method for stably precipitating crystals of bricks containing mullite phase according to claim 1, characterized in that The clean water is slightly acidic or neutral, with a pH value range of 5.5 ≤ pH ≤ 7.

3. The laying method for stably precipitating crystals of the brick material containing mullite phase as claimed in claim 1, wherein The clean water is slightly acidic with a pH value range of 5.5 ≤ pH ≤ 6.

5.

4. The laying method for stably precipitating crystals of bricks containing mullite phase according to claim 1, characterized in that, Spray 0.65 m of clean water per square meter 3 .

5. The laying method for stably precipitating crystals of bricks containing mullite phase according to claim 1, characterized in that, The temperature range for spraying clean water is 5 - 32 °C.

6. The laying method for stably precipitating crystals of bricks containing mullite phase according to claim 1, characterized in that, The temperature for spraying clean water is 25 °C.