JPS6342811A - Manufacture of colored powder material for ceramic building material - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for producing colored powder materials for forming speckled patterns in tiles and other ceramic building materials.

(Prior Art) Ceramic building materials with spotted patterns are manufactured by mixing a plurality of types of powder materials of different colors and press-molding the mixed material.

This colored powder material was then produced in a conventional manner. In other words, when grinding raw materials such as feldspar, waxite, pottery stone, talc, and clay in a mill to form slurry, a specified pigment is added to coat the particle surface with pigment at the same time as grinding. This slurry was then pulverized using a spray dryer.

Then, by performing this operation for each different color, that is, for each type of pigment, preparing multiple types of colored powder materials, and then mixing them together and press-molding them, the above-mentioned spotted patterned ceramic building material can be obtained. It will be done.

(Problems to be Solved by the Invention) However, when colored powder materials are produced using such a method, there is a large amount of material loss and it takes a very long time to produce the powder materials.

Grinding of raw materials in a mill 1 When pigments are added to color the slurry, the colored particles adhere to the inner surface of the mill. The inside of the machine must be cleaned, and this cleaning process takes a long time. In other words, after pouring water for cleaning inside the mill for a long time,
After operating the mill to clean the inside, the water inside the mill must be drained again over a long period of time.

The same thing can be said about spray dryers (the height of the dryer is about 30 meters), and it takes a long time to clean the dryer. In the case of a spray dryer, it takes nearly four hours.

In this manner, according to the conventional method, the time required for setup and cleaning is actually longer than the net manufacturing time of the powder material.

Moreover, a large amount of colored powder material adheres to the inner surface of the mill or spray dryer, and this is washed off during cleaning, resulting in a problem that the colored powder material is lost as material loss.

(Means for Solving the Problems) The manufacturing method of the present invention was devised to solve the above problems, and its gist is as follows: (a) Feldspar, waxite, pottery stone, talc , a step of grinding raw materials such as clay with water in a mill to turn it into slurry; (b) a step of turning the slurry from the mill into powder in a spray dryer; and (c) a step of turning the powder into a specified form. The method includes the step of mixing the powder with one type of pigment in a small mixer to coat the particle surface of the powder with the pigment, thereby coloring the powder in one color.

(Function) That is, the present invention changes the conventional idea of coating the raw material particle surface with pigment at the same time during the grinding process of the raw material in a mill, and instead coats the raw material particle surface with a pigment after powdering using a spray dryer. This was mixed with a pigment to coat the surface of the powder particles with the pigment, thereby coloring the powder material.

In the present invention, the coloring step for the powder material is added by one step compared to the conventional manufacturing process, but cleaning work for the mill and spray dryer is not necessary. What adheres to the inner surface of these mills and spray dryers are particles of the same color as the raw materials, and no colored particles adhere to them at all.Therefore, there is no need to wash them off, and they may be lost as material loss. It disappears.

In the present invention, when the powder material and pigment are mixed in a mixer, colored particles will adhere to the inner surface of the mixer, but since this mixer is small, the time required to clean it will be limited. In particular, if you prepare multiple mixers of this type and use each one as a dedicated machine for each type of pigment, the mixing of the powder material and pigment will be completed. There is no need to wash the mixer every time.

The reason why this is possible in the present invention is that the coloring of the raw material particles is stopped at the same time during the grinding process of the raw material using a mill, which is a large machine, and the coloring process is taken out independently and becomes independent. This process enables continuous operation in mills and spray dryers.

(Example) Next, an example of the present invention will be described in detail based on the attached process diagrams. First, Noristone (70
wt%) and clay (30 wt%) with water added (raw material/water ratio is 1O15), and these raw materials are ground in a mill lO to make slurry. The slurry-formed raw material is then pulverized in a spray dryer 12. That is, in the spray dryer 12, when slurry is sprayed from the tip of the nozzle 14 and hot air is blown from the tip of the duct 16, the slurry droplets scattered from the nozzle 14 quickly dry and become fine particles. , are collected and taken out from the outlet 18 at the lower end of the spray dryer 12. The color of the extracted particles is the whitish color of the raw material itself.

The thus powdered material is then treated with a predetermined amount of colored pigment,
For example, with a monochromatic paste pigment of about 0.5 to 10 vt% of red, black, yellow, brown, or other colors, a capacity of 7
They are mixed together in a mixer 20 of about 5L1. Various types of mixers are possible, such as one that mixes the contents by rotating the container itself, and one that mixes the contents by rotating blades within the container, but in this example, the former is used. The specified zero rotation speed is 200 to 40 revolutions per minute.
It has a high speed of 0 rotations, and this can be read in advance for about 30 seconds. As a result, the surface of the powder particles is coated with the pigment, and the powder is colored in one color.

After mixing for a certain period of time, open the lid of the mixer and take out the colored powder inside.

Next, in order to manufacture a different type of colored powder material, a portion of the raw material powder taken out from the spray dryer 12 may be taken out separately and mixed with other types of pigments in a mixer prepared separately in advance. , or "The mixture a20 described in 2 may be washed once and mixed using the same mixer 20,"
Even if the mixer 20 is cleaned for each different type of face powder 1, the time required for this is extremely small and there is no major loss.For example, in the mixer 20 of this example, the time required for cleaning is 3~ It takes about 4 minutes. On the other hand, when cleaning the mill 10 as described above, it takes 2 to 3 hours. This is because the mixer 20 has a small capacity of about 75 batches, while the mill 10 has a throughput of 5ooo per batch! ;L
This is because the number of cases is quite large. Of course, if multiple mixers are prepared in advance and each is used as a dedicated machine for each color, such cleaning itself will not be necessary, and continuous operation from the first process to the final process will be possible. te, mill 10
The operating rate of the spray dryer 12 is also dramatically increased, and the production capacity of colored powder materials is also significantly increased.

Although the embodiments of the present invention have been described in detail above, the present invention can be implemented in other embodiments.

For example, if the type of base material used in ceramic building materials changes, the raw materials will naturally change as well, and it is possible to use a variety of pigments to color the powder particles of the raw materials. Furthermore, as mentioned above, the mixer can be used in various forms, and the processing conditions applied to the mixer can be changed as appropriate. It is possible to implement various modifications based on knowledge.

(Effects of the Invention) As described in detail above, according to the present invention, it is not necessary to perform mill washing and spray dryer cleaning each time the type of pigment changes.

This eliminates material loss and time loss, increases the operating rate of mills and spray dryers, significantly improves production capacity, and produces various other excellent effects.

[Brief explanation of the drawing]

The attached drawings are process diagrams showing each step of a manufacturing method that is an embodiment of the present invention. 10: Mill 12 Nispray Dryer 20: Mixer Patent Applicant Inax Co., Ltd. Procedural Amendment (
Method) 1. Description of the case 1986 Patent Application No. 186450 2 Title of the invention Method for manufacturing colored powder materials for ceramic building materials 3 Person making the amendment Relationship to the case Patent applicant Address 3-chome Koie Honmachi, Tokoname City, Aichi Prefecture 6 Address Name (047) Inax Co., Ltd. Representative Teru Ina 34, Agent Telephone 052-451-9300 Address No. 904, Chisan Building, 1-3 Tsubaki-cho, Nakamura-ku, Nagoya 453-6, Subject of amendment (1) Column for detailed explanation of the invention in the specification (2) Column for brief explanation of drawings in the specification (3) Drawing 7, content of amendment (1) Attachment 1 on page 6, line 9 of the specification 1 of 1 is r
Correct with 1 in Figure 1. (2) On page 9, line 18 of the specification, the text ``r attached Figure 1'' is corrected to ``r 1 Figure 1''. (3) As shown in the attached sheet, the figure numbers of the drawings are numbered r (Figure 1). that's all

Claims (1)

[Claims] A method for producing a colored powder material for forming a spotted pattern in a ceramic building material, which comprises grinding raw materials such as feldspar, waxite, pottery stone, talc, and clay together with water in a mill. A process of turning the slurry into slurry, a process of powdering the slurry from the mill using a spray dryer, and mixing the powder with a predetermined amount of one type of pigment in a small mixer to form the powder. 1. A method for producing a colored powder material for ceramic building materials, comprising the steps of: coating the surface of the particles with the pigment, thereby coloring the powder in one color.