JPH05294652A - Production of artificial construction material - Google Patents

Abstract

PURPOSE:To easily provide an artificial construction material having a crystallized pattern, suitable for producing artificial construction materials with patterned design. CONSTITUTION:A glass feedstock consisting mainly of SiO2, Al2O3 and CaO is melted and solidified, and then crushed under pressure using a roller crusher into flat frit (pref. 0.2-3mm thick), which is, in turn, packed a shelf board and baked (pref. at 1000-1300 deg.C), thus affording the objective artificial construction material with crystallized pattern.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an artificial building material, and more particularly to a method for producing an artificial building material having a crystallized pattern.

[0002]

2. Description of the Related Art Although there is erosion by acid mist as a problem in outdoor use of marble, SiO ₂ , Al ₂ O ₃ , C
An artificial building material obtained by firing and crystallizing a glass raw material containing aO as a main component can be stably used even outdoors, and its crystallized pattern is preferred as a pattern that is not naturally present, and demand is growing.

By the way, regarding the firing method, a method of melting a glass raw material containing a nucleating agent to prepare a glass body and then performing a crystallization treatment by a heat treatment and Japanese Patent Application No. 47-803.
There is a glass body integration method as shown in No. 9. The former is difficult to express large crystals, and when emphasizing a picture pattern as an artificial building material, the latter glass body integration method, which can express a large pattern, is more applicable.

In the case of this integration method, it is necessary to measure the appearance of crystals and the fusion of particles with each other while maintaining the shape of the particles at a temperature equal to or higher than the softening temperature of the glass body. If the melting proceeds too much, the whole will vitrify and it will be impossible to develop crystals. That is, the temperature condition range for achieving both fusing and crystallization of particles is considerably narrowed.

On the other hand, a pattern as an artificial building material is formed by one particle pattern. In this case, 30 of natural marble
A pattern pattern of ˜50 mm is desired, but conventional particulate materials cannot meet this requirement.

A state in which glass raw materials are filled on a shelf plate by this integration method is shown as a model in FIG.
After being subjected to crystallization heat treatment in a temperature range of 200 ° C., the surface in contact with the shelf plate or the surface of the opposite glass body forms a smooth surface without particles and irregularities at the interface between particles. It is essential.

When the particle diameter of the glass raw material is as small as about 5 mm, this smoothness is not a problem, but as described above, it is 30-5.
When forming a large pattern of about 0 mm, the heat treatment is performed in a temperature range in which the particles are not in a sufficiently molten state, so the particles in a semi-molten state are exposed on the surface and the smoothness is incomplete or the heat treatment time becomes long. However, there is a problem that a product cannot be produced depending on the physical properties of the glass raw material.

As described above, the conventional manufacturing method of artificial marble-like building material has a drawback in that a large natural marble-like pattern cannot be obtained due to the shape of the raw material particles.

[0009]

In view of the above-mentioned state of the art, the present invention improves the smoothness of the upper or lower horizontal surface generated by the fusion of the semi-molten particles present in the glass body during the heat treatment, resulting in a large An object of the present invention is to provide a method for manufacturing an artificial building material having a crystallized pattern that can easily form a pattern pattern.

[0010]

MEANS FOR SOLVING THE PROBLEMS The present invention is as follows: (1) A flat flake shape obtained by melting and solidifying a glass raw material containing SiO ₂ , Al ₂ O ₃ , CaO, etc. as a main component and then crushing it by compression with a roll crusher. A method for producing an artificial building material having a crystallization pattern, which comprises forming a frit, and filling the frit on a shelf board and baking the frit.

(2) The method for producing an artificial building material as described in (1) above, wherein the flat flake-shaped frit has a thickness of 0.2 mm or more. Is.

The present invention will be described in more detail below.
In the present invention, as the glass raw material, a flake raw material compressed and crushed by a roll is used. The manufacturing method is shown in FIG. 1. The molten raw material discharged from the glass raw material melting furnace 1 is compressed and crushed by a water-cooled roll crusher 2 and then crushed by a vibrating crusher 3 to produce a flat flake-shaped glass raw material (frit) 4. obtain.

Since the flakes at the outlet of the roll crusher 2 have a typical size of 100 to 200 mm at the maximum, the size of the flakes can be freely adjusted to a size less than this by adjusting the vibration crusher 3, but the maximum size for building materials. A size of up to about 50 mm is used. Since the shape is indeterminate or square, its size cannot be expressed by the length and width, so it is called the representative dimension. The thickness of the flakes can also be adjusted to some extent, but from 0.2 to
A thickness of about 3 mm is suitable as a building material. If the thickness is small, it is easy to pulverize during handling such as loading into a bag, taking out or transporting, and these fine powder components may obscure the contour of the pattern and deteriorate the product quality, so mixing should be avoided as much as possible. is there. If the thickness is about 0.2 mm or more, pulverization can be prevented, but if the thickness is too large and about 2 mm or more, it is difficult to smooth the flakes in a semi-molten state by fusing with each other. Maximum size of individual pattern is 30 to 50 mm
When it is in the range of about 3 mm or less, there is almost no problem.

In the present invention, the firing temperature required for smoothing the flakes in the semi-molten state by fusing the flakes is 10
It is preferably about 00 ° C or higher and 1300 ° C or lower. The softening point of the flakes of the present invention is about 900 ° C., but if it is 1000 ° C. or higher, the viscosity is not too high and the flakes are apt to fuse to each other in a relatively short time. Further, at 1300 ° C. or lower, a fluid state of low viscosity is obtained, and an excellent product can be obtained without the fusion pattern of flakes disappearing and vitrification.

[0015]

In the glass raw material, the peripheral portions of the individual flakes are melted by the heat treatment including crystallization, and as shown in FIG. 2, the portions A in which the crystalline and glassy substances are mixed, which are close to the original size of the respective flakes, are eluted. The glass material B is fused and used as a binder. In the case of flat flake-shaped glass raw materials, the flatness is effective, and even if flakes with a huge size of several tens of millimeters are in contact with each other near the surface, the smoothness is impaired by mutual fusion. I don't care. In the case of particles,
When the particles having a huge particle size are present in contact with each other, the particles are not melted in the semi-molten state, so that the probability of forming an uneven surface is large and a defective product is likely to be generated.

[0016]

EXAMPLES The present invention will be described more specifically with reference to examples of the present invention. The composition of the glass raw material used in this example is a weight ratio of SiO ₂ : 59%, Al ₂ O ₃ : 1.
3.8%, CaO: 12.6%, ZnO: 4.5%, B
aO: 3.6%, Na ₂ O: 2.7%, K ₂ O: 3.8
%, And a frit obtained by mixing, melting and solidifying these raw material components was used as a glass raw material. The weight distribution of each flake-shaped frit in each sieve section is shown in Table 1 below.

[0017]

[Table 1] The thickness varies considerably, but 0.5 to 1
mm was predominantly included.

16.6 kg of this glass raw material was placed on the shelf plate.
It was filled in an area of 0 cm × 20 cm and fired at a maximum of 1150 ° C. The product after firing had a size of 20 cm × 20 cm and a thickness of about 16 mm. In addition, although 23% of large flakes having a typical size of 19.1 mm or more and a maximum of about 40 mm are included, fusion between the flakes is completely performed and the upper and lower surfaces are sufficiently smooth. The crystallized pattern based on the size of the flakes was developed. That is, it was possible to form a large pattern having a maximum size of several tens of mm.

Although no reference was made to the colorant in the above examples, an artificial building material having a crystallized pattern colored by adding a pigment to the raw material can also be manufactured. Various colorings can be obtained depending on the pigment to be added. For example, Fe ₂ O ₃ (black), MnO ₂ (brown), NiO
(Brown), CuO (blue), Cr ₂ O ₃ (green) and the like, the amount added is generally about 0.05 to 0.5 wt% relative to the starting glass.

[0020]

Industrial Applicability According to the present invention, it is possible to manufacture an artificial building material having a large pattern of several tens of millimeters, which cannot be formed with a particulate glass raw material.

[Brief description of drawings]

FIG. 1 is an explanatory view of manufacturing a flat flake frit which is a raw material of the present invention.

FIG. 2 is an explanatory view of a fusion state of flat flakes frit obtained by the present invention.

FIG. 3 is an explanatory view of manufacturing a building material using a conventional glass raw material.

[Procedure amendment]

[Submission date] March 19, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Tadashi Yamauchi, No. 1 Satinoura-machi, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Inventor Masayuki Moriyama 1-1, Atsunoura-cho, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industry Co., Ltd. Nagasaki Shipyard (72) Inventor Masahiro Isomoto 1-1 1-1 Atsunoura-machi, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industries Ltd. Nagasaki Shipyard (72) Inventor Mikio Aramaki 5-717, Fukahori-cho, Nagasaki City, Nagasaki Prefecture 1 Choryo Engineering Co., Ltd.

Claims (2)

[Claims] 1. A flat flake-like frit which is obtained by melting and solidifying a glass raw material containing SiO ₂ , Al ₂ O ₃ , CaO, etc. as a main component, and then compression crushing it with a roll crusher, and the frit is placed on a shelf plate. A method for producing an artificial building material having a crystallization pattern, which comprises filling and firing. 2. The flat flake-shaped frit has a thickness of 0.
It is 2 mm or more, The manufacturing method of the artificial building material of Claim 1 characterized by the above-mentioned.