JPH066501B2 - Method for manufacturing kneaded clay for tiles - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a method for producing a kneaded material which is a raw material for forming a tile base material.

2. Description of the Related Art Conventionally, in a clay for tiles, a sludge made by mixing water with a base soil to make it fluid is atomized into a drying chamber in which combustion gas is blown, and dried particles are obtained. The kneaded clay by the spray dryer was used.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention By the way, since the particulate kneaded clay by such a spray dryer is dried by direct combustion with the combustion gas as described above, the surface of the particles may be unglazed. For this reason, the plasticity at the time of compression molding is inferior, and since the particles become hollow, the tightness is poor, and there is a defect that cracks or strains are likely to occur in the fired tile.

Means for Solving the Problems The method for manufacturing a clay for tiles of the present invention has been completed against the background of such circumstances, and sludge is rotationally driven while being heated by passing steam inside. It was made to adhere to the surface of a drum or a hollow disk, dried, and scraped to obtain a kneaded clay.

Further, the scraped clay may be solidified and then crushed.

According to the method and effect of the present invention, when the sludge is adhered to the surface of the drum or the hollow disc, the sludge adhered by the heat of the drum or the hollow disc is dried while the drum or the hollow disc is rotated, and then the sludge is dried. The clay is continuously obtained by scraping off.

That is, in the method of the present invention, sludge is adhered to the surface of a drum or a hollow disk heated by passing steam inside, which is, so to speak, indirect drying. It is possible to obtain a dried kneaded material in a uniformly good state without the occurrence of the above-mentioned portion, and it is excellent in plasticity when compression-molded.
Also, since it is scraped from the state of adhering to the surface of the drum or the hollow disk, it is possible to take out the kneaded material in the form of a thin plate piece, and it is possible to reduce the tightness at the time of compression molding as compared with the conventional hollow particle-shaped kneaded material. Is increased, and cracks and distorts are reliably prevented during firing of the tile. Further, unlike a spray dryer, since combustion gas, carbon and the like are not mixed with impurities in the kneaded clay, high quality tiles can be manufactured. Further, as described above, since it is indirect drying and is dried at a low temperature, it is possible to prevent the binder from burning out when the organic binder is mixed with the base soil.

Further, if the scraped kneaded clay is hardened and then crushed, the bulk density of the kneaded clay becomes higher, and when the tile base is compression-molded, it is better and the tile with less strain can be manufactured. It will be possible.

Example Hereinafter, an example of the method of the present invention will be described.

The first embodiment is of a drum type, in which a pair of drums whose surfaces are heated by passing steam inside are juxtaposed in a horizontal posture so that the upper surfaces of the drums face outward, respectively. It is designed to pour slurry between both drums,
When pouring the slurry, it adheres to the surface of the drum and is dried by the heat of the surface while the drum rotates, and when it turns to the lower surface side of the drum, it is scraped off by a scraper, etc. The clay is continuously obtained.

In this example, since the kneaded clay is indirectly dried by the heat of the surface of the drum, a uniformly dried kneaded clay without a bisque-fired portion is obtained, which has excellent plasticity at the time of compression molding and can be scraped with a scraper. Since it is scraped off from the surface of the drum, the kneaded clay can be taken out in the form of a thin plate, and it becomes tighter and larger than the conventional hollow particle-shaped kneaded clay, and cracks or distortions can occur during the firing of tiles. It is prevented from doing. Also,
Unlike spray dryers, high-quality tiles can be manufactured because impurities such as combustion gas and carbon are not mixed in the kneaded clay. Further, as described above, since it is indirect drying and is dried at a low temperature, there is no fear that the binder will burn out when the organic binder is mixed with the base soil.

The second embodiment is a disk type, in which a plurality of hollow disks, which are rotatably driven in the middle of a supply pipe for passing steam, are connected to the supply pipe to receive the steam therein and are driven to rotate. It is arranged so that it is sprinkled with a nozzle or the like on both sides of each hollow disk at intervals in the direction. It is dried by heat, and it is scraped off by a scraper after about one rotation.

According to the second embodiment, not only those having the same advantages as those of the first embodiment described above but also the adhesion area of sludge when the installation area of the device is the same as that of the first embodiment. It has a merit that it can be made large and the kneaded clay can be manufactured more efficiently.

Further, the kneaded clay obtained by the above-mentioned first or second embodiment is compacted into an appropriate shape by a compression molding machine by an appropriate amount, and thereafter, it is crushed by a crusher, so that the kneaded clay has a higher bulk density. Therefore, it is possible to manufacture a tile with less distortion, which is even better at the time of compression molding of the tile base material.

Claims (2)

[Claims] 1. A tile characterized in that sludge is adhered to the surface of a drum or a hollow disk which is driven to rotate while being heated by passing steam through the inside, dried and then scraped to obtain a kneaded clay. Method of manufacturing clay 2. The method for producing a clay for tile according to claim 1, wherein the scraped clay is solidified and then crushed.