JPH061676A - Greenware for tile, manufacture therefore and tile - Google Patents

Abstract

PURPOSE:To provide a light tile and raw earth for tile to produce the light tile and to provide a manufacturing method for the tile material. CONSTITUTION:The earth material tile contains one piece or plural pieces of fine hollow spheric bodies 2 (foamed particles which are formed by firing volcanic glass particles consisting essentially of silica and alumina) in granular particles used for tile molding. In the manufacture method, raw materials such as clay, feldspar, a pottery stone are mixed with water and fine hollow spherical bodies 2 to prepare a slurry and the slurry is sprayed and dried by a spray drier to prepare the particles. The tile 1 manufacture from the earth raw material produced in such a manner is formed with many bubbles 3 caused by the fine hollow spherical bodies 2 in the inside.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a clay for tiles, a method for producing the same, and a tile.

[0002]

2. Description of the Related Art A conventional clay for tiles is a granulated product obtained by spray-drying a slurry obtained by mixing and pulverizing raw materials such as clay, feldspar, and porcelain stones with water with a spray dryer. Further, the tile was obtained by pressing and hardening the above-mentioned kneaded clay for tile with a press molding machine.

[0003]

Generally, the number of tiles used in one building is enormous. Therefore, if the tiles can be made lighter, the pillars of the building can be made thinner, or the transportation cost of the tiles itself can be reduced, and an immeasurable ripple effect is expected. Therefore, research and development have been performed to reduce the weight of tiles, but satisfactory results have not yet been obtained.

[0004]

Therefore, the present invention provides a kneaded clay for tile in which one or a plurality of fine hollow spheres are embedded in granular particles used for tile formation. In addition, the method for manufacturing the clay for tiles is to mix raw materials such as clay, feldspar, and porcelain stones with water and fine hollow spheres to make sludge, and to spray-dry the sludge with a spray dryer to granulate it. It is characterized by having done. Further, by using the kneaded clay for tile, a tile having a large number of bubbles formed by fine hollow spheres therein is provided.

[0005]

Since the clay for tiles has a form in which fine hollow spheres are contained in the granular particles, the specific gravity of the clay for tile is reduced by the amount of bubbles in the fine hollow spheres. Moreover, since the fine hollow spheres are minute and are difficult to be crushed, and the surroundings are protected by being covered with a raw material such as clay, they cannot be crushed even when a high pressure is applied during molding of the tile. Therefore, a large number of fine bubbles formed by fine hollow spheres are formed inside the tile after firing, and the tile is lighter than the conventional tile by the amount of the bubbles. Also,
Mixing raw materials such as water, clay, feldspar, and porcelain stones with fine hollow spheres to make sludge, and spray drying the sludge with a spray dryer to granulate it, the surface of the fine hollow spheres is instantly dried with the mud covered. However, a kneaded clay for tile in which fine hollow spheres are embedded in the granular particles can be easily formed.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a partially enlarged sectional view of a tile, and FIG. 2 is an enlarged sectional view of granular particles. Inside the tile 1
As shown in, a large number of bubbles 3 are formed by the fine hollow spheres 2. As shown in FIG. 2, the tile kneaded material as a raw material for making the tile 1 is composed of granular particles 4 of about 200 to 500 μm in which fine hollow spheres 2 are embedded. The fine hollow sphere 2 has a size of 40 to 400 μ.
One to a plurality of particles are contained in one particle 4 with a size of about m.
The fine hollow spheres 2 are made by firing volcanic glass particles containing silica and alumina as main components, and are expanded particles having hollow closed cells that have been expanded by heating. It was developed at the Kyushu Institute of Industrial Technology, Institute of Technology, and is currently produced and sold by a private company under the trade name "Silax: Sylux". This fine hollow sphere 2
Has a heat resistance that does not deform when dried by a spray dryer, a pressure resistance that does not crush during press molding, and a property that does not generate gas during tile firing.

Next, a method for manufacturing the kneaded clay for tile and a method for manufacturing the tile 1 using the kneaded clay for tile will be described.
First, clay, feldspar, porcelain stone, etc. and water are mixed and ground in a ball mill, and the fine hollow spheres 2 in an amount corresponding to a dry weight ratio of about 16% are put and stirred. As another method for producing a slurry in which the fine hollow spheres 2 are mixed, a raw material such as clay, the fine hollow spheres 2 and water may be mixed and ground by a ball mill. Then, the slurry is spray-dried with a spray dryer to be granulated. As described above, since the fine hollow spheres 2 are mixed in the sludge, the fine hollow spheres 2 whose surface is covered with mud are jetted to the spray dryer. And because the mud dries instantly with the heat of the spray dryer,
As shown in FIG. 2, a tile kneaded material in which the fine hollow spheres 2 are embedded in the granular particles 4 is easily completed. Needless to say, in the clay for tiles manufactured as described above, some in which the fine hollow spheres 2 are embedded and some in which they are not are mixed. The tile kneaded material thus obtained is put into a mold of a press molding machine, pressure-molded under a normal pressure, and the press-molded product is fired to complete a tile 1 as shown in FIG. The melting point of the fine hollow spheres 2 is 120.
If it is 0 ° C to 1300 ° C and the firing temperature of the tile 1 is higher than that, the tile 1 may melt. However, fine hollow sphere 2
Since it has already been fired and foamed, no gas is generated, and therefore, even if it melts, the tile 1 is not deformed.

The tile 1 experimentally prepared in the above manner had a volume of 206.3 cm ³ and a weight of 391.5 g. By the way, the tiles made from conventional clay for tiles are
The volume was 210.1 cm ³ and the weight was 485.8 g.
This means that the weight has been successfully reduced by about 18%. A tile 1 made by mixing fine hollow spheres 2
Has a water absorption rate of 0.3%, which is almost the same as the average value of conventional tiles.
In addition, no particular abnormality such as change in shape was observed even after firing. Although the embodiments of the present invention have been described above, the present invention is of course not limited to the above embodiments. For example, the compounding ratio of the fine hollow spheres 2 can be arbitrarily set according to the application of the tile. Further, the fine hollow spheres 2 may be any one as long as they satisfy the heat resistance that does not deform when dried by a spray dryer, the pressure resistance that does not collapse during press molding, and the property that does not generate gas during tile firing. Can be anything.

[0009]

As described above, the kneaded clay for tile of the present invention is lighter than the conventional kneaded clay because the fine hollow spheres 2 are embedded in the granular particles 4. And
Tile 1 made using this clay for tiles
It is very light because it has a large number of fine bubbles 3 of fine hollow spheres 2 inside. Reducing the weight of tiles not only significantly reduces the cost of the building to be used, but also reduces the physical load on the operator during loading and unloading and transportation of tiles, or during construction. , Its ripple effect is tremendous. Further, since fine bubbles 3 are formed in the tile 1 thus produced, the heat insulating property and the sound insulating property of the tile itself are remarkably improved. Further, according to the method for producing a clay for tiles of the present invention, a clay for tiles in which the fine hollow spheres 2 are embedded in the granular particles 4 can be produced very easily and highly efficiently. By the way, even if an attempt is made to mix the fine hollow spheres 2 with a conventional tile kneaded clay in which a slurry consisting of clay, feldspar, porcelain stone, etc. and water alone is granulated with a spray dryer, they are separated because their specific gravities are considerably different. I couldn't make the tile as shown in Figure 1.

[Brief description of drawings]

FIG. 1 is a partially enlarged sectional view of a tile.

FIG. 2 is an enlarged vertical sectional view of granular particles.

[Explanation of symbols]

 1 ... tile, 2 ... fine hollow spheres, 3 ... bubbles, 4 ... particles.

Claims (3)

[Claims] 1. A kneaded clay for tiles, wherein one or a plurality of fine hollow spheres are embedded in granular particles used for tile formation. 2. The production of a clay for tiles, characterized in that a raw material such as clay, water and fine hollow spheres are mixed to make a sludge, and the sludge is spray-dried by a spray dryer to be granulated. Method. 3. A tile, characterized in that a large number of bubbles formed by fine hollow spheres are formed inside.