JPH0785892B2 - Method for manufacturing tile products - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing an inorganic raw material for ceramics and a method for producing a ceramic product using the raw material.

[Conventional technology]

This type of prior art known to the inventor is that a ceramic-like inorganic clay in a slurry form is dried by a spray dryer to obtain a teardrop-shaped raw material having a certain size and shape, for example, 1 to 1.5 mm. It is mainly used for tiles.

The particles of the conventional example have a uniform internal structure and a low production cost, and are therefore widely used in the industry as a compression raw material for tiles.

[Problems to be solved by the invention]

When the raw material is granulated by the conventional technique, there are advantages such as that the structure in the particles is uniform as described above,
It is used as a raw material for tiles.

However, in the granulation method using a spray dryer, since the particles are not compressed during granulation, only a raw material having a low bulk density can be obtained.

When a tile is compression-molded as a raw material, the raw material tends to adhere to the mold.

Therefore, there is a problem that it is necessary to repeatedly remove the deposited material.

Also, since the bulk density is low, the firing shrinkage rate is high,
When compression-molded and fired, there was a problem that tiles having a regular shape could not be obtained.

In addition, a proper amount of water is required for compression molding,
It was difficult to supply an appropriate amount of water to the raw material during compression molding.

Moreover, since conventional raw materials can only be obtained in a constant size and shape, the speckle pattern embodied on the surface of the tile has a fixed shape and size, and the tile taste has not changed. .

The present invention is intended to solve the above problems,
The purpose is to obtain an inorganic raw material for ceramic products having a high bulk density, and also to obtain a raw material having an irregular shape and size.

It also aims to manufacture ceramic products that embody irregular patterns.

[Means for Solving the Problems]

In order to achieve the above-mentioned object, the present invention mixes a pigment or a glaze, and a slurry-like inorganic clay for ceramics containing water is dried by adhering it to the surface of a heating-controlled rotating drum. After removing the dried inorganic clay for ceramics from the drum and replenishing water together to obtain an inorganic clay for tile ceramics of irregular shape and size, this inorganic clay for ceramics is used. An invention of a method for manufacturing a tile product, which comprises mixing a powdered clay to obtain a raw material for a secondary tile and press-molding it, and further heating a slurry-like inorganic clay for ceramics containing water. It is dried by adhering it to the surface of a rotating drum, the dried inorganic clay for ceramics is peeled from the drum, and the inorganic clay for ceramics is subjected to a humidification treatment and mixed with a pigment or glaze. The invention is a method for manufacturing a tile product, which comprises mixing a powder clay with an inorganic clay for tile ceramics to obtain a raw material for a secondary tile, and press-molding the mixture.

〔Example〕

 The details of the present invention will be described with reference to the accompanying drawings.

This example is not limited to the type of ceramic product.

As an example, a method of manufacturing a raw material for tiles and an example of manufacturing a tile from the raw material are disclosed.

A relatively large drum dryer 10 is installed, and 30-40% in advance
A slurry of tile inorganic clay 12 containing a relatively large amount of water is supplied through a feed pipe 14 to a supply tank 18 disposed above a pair of drums 16.

In this case, when color is applied to the tile product, pigment such as inorganic iron oxide or chrome oxide is preliminarily added to the clay 12 in the slurry in an amount of about 0.1 to 10%, and a paste such as cellulose is used. About 1 to 3% of the agent is preferably mixed with the kneaded clay 12.

Further, in the case of obtaining a tile product having glittering glitter, it is advisable to mix about 10% of glaze.

Of course, even if you do not mix these pigments and glaze
It will be readily appreciated that the twelve natural colors of the twelve are represented in the tile product.

Then, the pair of drums 16 are slowly rotated outward from each other.

This rotation speed varies depending on the size and shape of the drum 16, but normally 2 to 8 / rpm is suitable.

I explained rotating the drum 16 toward the outside,
It is not intended to limit the rotation to the outside.

According to the experiment conducted by the inventor, it was found that when the drum 16 is rotated inward, the drying process is not efficient when the slurry-like inorganic clay 12 for tiles is dried.

Therefore, it is preferable to rotate the drum 16 outward.

The above-mentioned slurry inorganic tile clay 12 is supplied from the supply tank 18 between the pair of drums 16, and the clay 12 is a thin film while being dried on the surface of the heating-controlled drum 16 rotating toward the outside. Becomes attached.

In other words, by slowly rotating the drum 16 and supplying steam or the like into the drum 16 through the pipe,
The kneaded clay 12 attached to the surface of the drum 16 heated to about 0 to 170 ° C. is dried.

Thus, the film-like inorganic clay for tiles 12 has a moisture content.
It is dried to about 0.33-0.6%.

Then, the film-shaped inorganic clay 12 for tiles adhering to the drum 16 is scraped off from the surface of the drum 16 by the scraper 20 and dropped into the storage box 22 provided below the drum 16.

This scraped off is, of course, the shape and size of the tile inorganic material 24 of irregular shape and size with variations (experimentally, the size of about 0.1 ~ 10 mm, The form was completely amorphous).

Unlike the conventional raw material, this raw material 24 is due to the irregular shape and size with variations.Therefore, when a tile product is manufactured, an irregular shape and pattern of size are not realized on the surface. It's easy to understand.

And, the pattern is different from the standardized conventional product, which makes the taste different.

When the raw material 24 is colored with a pigment or the like,
It goes without saying that the pattern will be colorful.

The above-mentioned tile raw material 24, as is clear from the above process, has a low water content and a high bulk density.
Although there is an advantage that 24 is obtained, on the other hand, since it is disadvantageous in the subsequent compression molding, it is necessary to supply about 5 to 11% of water in order to facilitate the compression molding.

Therefore, as in the example shown in the drawing, a water supply mechanism such as a spray is provided beside the scraper 20 as a water supply means.
Is provided by the hydration mechanism 26, and the dried film-shaped kneaded clay near the contact portion of the scraper 20 with the drum 16 is provided.
Rehydrate 12

Also, scraped off by scraper 20, drum 16
Water may be replenished to the tile inorganic raw material 24 while falling from the inside.

Thus, the tile-containing inorganic raw material 24 containing water is obtained.

It has been described above that the colored raw material 24 is obtained by previously mixing the pigment and the glaze into the slurry inorganic clay 12 for tile.

When a pigment or the like is mixed prior to the production of the raw material 24, the raw material 24 that is colored to the inside of the raw material 24 is obtained,
There is a benefit that the color of the pattern of the tile product is equalized to a uniform state.

However, instead of preliminarily mixing the pigment or the like into the kneaded clay 12, the pigment or glaze may be sprayed onto the raw material 24 at the time of replenishment of water to give a color.

In this case, the entire surface layer of the raw material 24 is not necessarily colored, and a pigment or the like is attached only to one side of the surface to form an unattached portion such as a pigment. It will be appreciated that a tile product with a random color different from the fully colored material 24 can be obtained by waiting for the adhered part and the non-adhered part.

In other words, on the surface of the tile product, a product in which the unique color of the raw material 24 is expressed can be obtained without being colored with the colored portion, and it will remind a certain taste. .

Further, the timing of replenishment of water, the inorganic clay 12 for tiles from the drum 16 by the scraper 20, it was explained that it is performed when scraping, as described below, the powder kneaded clay and tile raw material 24 of the next step and You may perform it at the time of mixing.

Next, a process of manufacturing the tile 36 using the above-mentioned raw material 24 will be described.

However, the following steps are basically the same as the conventional method.
Therefore, in terms of production, there is an advantage that most of the existing equipment can be used for implementing the present invention.

Inorganic raw materials for tiles with irregular shapes and sizes as described above 24
And the generally widely used powdered clay 1:99 or
The kneading machine 28 thoroughly mixes it at a ratio of 99: 1.

As described above, instead of supplying water when scraped off from the drum 16, water necessary for mixing these may be supplied.

In addition, it is planned to add a sizing agent when mixing the two, and if the sizing agent is mixed in advance, there is no need for it, and no sizing agent may be required at all.

Next, the secondary tile raw material 30 in which the raw material 24 and the powder kneaded clay are mixed is housed in a fixed forming die 32 as in the conventional method, and is normally press-formed.

Then, the tile product 36 is obtained by firing the molded product 34 for the tile product 36.

Thus, an irregularly shaped and sized pattern is embodied on the surface of the tile product 36, and when a pigment or the like is mixed, a colored tile product 36 is obtained.

Further, as described above, when the pigment is attached during the production of the raw material 24, the tile product 36 in which the color unique to the raw material 24 and the color possessed by the pigment are further mixed is obtained.

The drum dryer 10 is used as an apparatus for manufacturing the raw material 24, and the example of the pair of drums 16 has been described.
In the case where there is only one, and instead of supplying the kneaded material 18 from above the drum 16, a storage box for the kneaded material 18 is provided below the drum 16, and a part of the drum 16 is immersed in the storage box to allow the drum 16 The inventor also plans to attach the clay 18 to the surface of and to obtain the raw material 24 according to the above-mentioned procedure.

〔The invention's effect〕

Since the present invention has the above configuration, it has the following advantages.

Since the inorganic raw material for tiles has an irregular shape and size, a tile obtained by mixing these raw materials has a pattern of irregular shape and size on its surface.

Therefore, unlike the conventional stylized tile pattern, a product having a variety of patterns can be obtained.

Further, by mixing a pigment or a glaze, a tile product having a more attractive random color can be obtained.

Further, an inorganic raw material for tiles having a high bulk density and a low shrinkage rate can be obtained.

[Brief description of drawings]

FIG. 1 is a side view of a drum dryer for producing an inorganic raw material for ceramic products of irregular shape and size, FIG. 2 is a side view of a kneader, FIG. 3 is a sectional view at the time of molding, and FIG. The figure is a cross-sectional view of the molded product, and FIG. 5 is an enlarged perspective view of the product. (Explanation of symbols of main parts) 16 …… Drum 18 …… Slurry-like inorganic clay for ceramics 20 …… Scraper

Claims (2)

[Claims] Claims: 1. A kiln for drying, which is prepared by mixing a pigment or a glaze, and adhering a slurry-like inorganic kneaded clay containing water to the surface of a rotating drum which is heated and controlled to dry it. After removing the inorganic kneaded clay from the drum and replenishing the water together to obtain an inorganic kneaded clay for tile ceramics with an irregular shape and size, mix the inorganic clay for tile ceramics with powdered clay and A method for producing a tile product, comprising obtaining a raw material for the next tile and press-molding the raw material. 2. A ceramic inorganic clay for ceramics containing water is dried by adhering it to the surface of a heated rotating drum, and the dried inorganic inorganic clay for ceramics is peeled off from the drum. It is characterized in that the inorganic clay for ceramics is subjected to a humidification treatment and at the same time a pigment or glaze is mixed, and the inorganic clay for ceramics is mixed with powdered clay to obtain a raw material for a secondary tile, followed by press molding. Method of manufacturing tile products.