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Black antique brick and preparation method thereof

An antique brick and black technology, which is applied in the field of black antique brick and its preparation, can solve the problems of uneven color, poor aesthetics, and many pores, achieve uniform color, reduce easy foaming and shrinkage, and improve environmental safety Effect

Active Publication Date: 2021-03-09
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is that during the stacking process of red mud, a large amount of organic matter is mixed in, and more pores are likely to be generated during the firing process.
Second, red mud contains a lot of Fe 2 o 3 It is brown or brownish red after being directly fired, and the color is uneven and the aesthetics are poor
At present, there have been reports on the preparation of antique bricks by fly ash, and there are also reports on the use of red mud to prepare porous insulation materials by utilizing the characteristics of red mud that are prone to produce pores at high temperatures. However, red mud is used to prepare dense black antique bricks. Not yet reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Pre-calcine the red mud fine powder with a 200-mesh sieve, the pre-calcination temperature is 500° C., and the pre-calcination time is 2 hours.

[0029] (2) Red mud fine powder pre-calcined through 200 mesh sieve, 200 mesh glass powder, boric acid, 200 mesh kaolin, and water glass solution are mixed in a weight ratio of 70:10:5:7:8 to obtain the antique brick mixture .

[0030] (3) Fill the above-mentioned archaized brick mixture into the metal brick mold of the press, press molding at one time, and the molding pressure is 100MPa; after the pressed brick is dried at 110°C for 9h, it is fired at 1100°C for 1h, After cooling, dense black antique bricks can be obtained. The performance indicators of antique bricks are shown in Table 1.

Embodiment 2

[0032] (1) Pre-calcine the red mud fine powder with a 200-mesh sieve, the pre-calcination temperature is 500° C., and the pre-calcination time is 2 hours.

[0033] (2) Red mud fine powder pre-calcined through 200 mesh sieve, 200 mesh quartz powder, boric acid, 200 mesh Suzhou soil, and water glass solution are mixed uniformly in a weight ratio of 75:8:4:6:7 to obtain a mixture of antique bricks material.

[0034] (3) Fill the above-mentioned archaized brick mixture into the metal brick mold of the press, press molding at one time, and the molding pressure is 50MPa; after the pressed brick is dried at 110°C for 10h, it is fired at 1120°C for 2h, After cooling, dense black antique bricks can be obtained. The performance indicators of antique bricks are shown in Table 1.

Embodiment 3

[0036] (1) Pre-calcine the red mud fine powder with a 200-mesh sieve, the pre-calcination temperature is 500° C., and the pre-calcination time is 2 hours.

[0037] (2) Red mud fine powder pre-calcined through 200 mesh sieve, 200 mesh feldspar powder, boric acid, 200 mesh Guangxi white mud, and water glass solution are mixed evenly in a weight ratio of 80:7:3:5:5 to obtain antique bricks Mixture.

[0038] (3) Fill the above-mentioned antique brick mixture into the metal brick mold of the press, press molding at one time, and the molding pressure is 80MPa; after the pressed brick is dried at 110°C for 8h, it is fired at 1130°C for 1.5h After cooling, a dense black antique brick can be obtained. The performance indicators of antique bricks are shown in Table 1.

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Abstract

The invention belongs to the technical field of building materials, and in particular relates to a black antique brick and a preparation method thereof. The black antique brick is made of red mud fine powder, flux, discoloration agent, clay and auxiliary binder in a weight ratio of 70‑85:5‑10:1‑5:1‑10:5‑10. The present invention has four remarkable advantages: firstly, the organic matter in the red mud is reduced by pre-calcination, thereby greatly reducing the problem that the red mud is prone to foaming and large shrinkage during firing; secondly, the strength and environmental safety are high; thirdly, Boric acid or borax is used as a discoloration agent, so that the red mud becomes glossy black after sintering, and the color is uniform; the fourth is to use a large amount of red mud, and the amount of red mud can reach more than 80%, which is a good resource for red mud. products to reduce environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to a black antique brick and a preparation method thereof. Background technique [0002] Antique bricks belong to architectural ceramics and are mainly used for indoor and outdoor decoration of buildings. Antique tiles have a wide range of applications. Its cultural heritage, historical connotation and rich decorative techniques make it develop rapidly in China, and it is also the mainstream product of ceramic tiles in the European and American markets. With the continuous expansion of its scope of use, the market demand for antique bricks is also expanding. At present, the raw materials of antique bricks are mainly clay and feldspar mineral raw materials. my country has become a major producer of architectural sanitary ceramics in the world, and the level of mineral resources per capita is extremely low. Under the strategy of sustainable development, the co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B33/132C04B33/13C04B33/32
CPCC04B33/13C04B33/131C04B33/1322C04B33/32C04B2235/3409C04B2235/3418C04B2235/3463C04B2235/36C04B2235/661Y02P40/60
Inventor 乐红志
Owner SHANDONG UNIV OF TECH
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