JPH1036165A - Production of baked material for building material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a method for producing a suitable baked product for a building material by which the effective utilization of an incinerated ash containing a metal such as iron or zinc or alloys is carried out by mixing specific three components, forming the resultant raw material for ceramics, baking the formed compact and providing the baked material for the building material. SOLUTION: (A) A waste powder which is an incinerated ash, prepared by incinerating a wood waste or a pulverized material of a waste tile, a porcelain waste, etc., containing a metal such as iron, copper, zinc or lead or alloys of the metal in an amount of 5-40% expressed in terms of weight ratio and treated by moisture regulation to 3-6% moisture content in an amount of 10-60wt.% expressed in terms of weight ratio is kneaded with (B) a cullet which is a waste glass in an amount of 10-60% expressed in terms of weight ratio and (C) a clay for ceramics in an amount of 20-60% expressed in terms of weight ratio as a raw material for the ceramics and the moisture of the resultant raw material for the ceramics is regulated to a prescribed moisture content. The obtained raw material for ceramics is formed by extrusion or press forming and baked at 1,050-1,150 deg.C to thereby afford a baked material for a building material in the form of dotted colors due to the oxidation of metals without completely melting by converting the cullet into a low melting point.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the manufacture of fired products for building materials using incinerated ash containing metals such as iron, copper, zinc or lead and their alloys and cullets such as waste glass as raw materials for ceramics. About the method.

[0002]

2. Description of the Related Art Fired clay products such as bricks and tiles are widely used as fired materials for building materials, such as for interior decoration of buildings. In the production of these bricks and tiles, clay is used as a base material, and water is added and kneaded,
After molding into a predetermined shape by extrusion molding or press molding,
The molded product is dried and fired to produce a product.

[0003] Other methods for producing bricks and tiles include:
JP-A-57-67075 discloses a technique in which waste glass, a binder and a plasticizer are added to a clay-based raw material and firing is performed at a low temperature. As disclosed in JP-A-56-109869, lithium is used. A method of kneading a glassy material containing an aluminosilicate with a kaolin-based clay, Japanese Patent Application Laid-Open No. Sho 62-3
A method of exposing a glass material and an alkali metal silicate to carbon dioxide gas as disclosed in Japanese Patent Application No. 0653, and a method of producing a glazed tile in which glass powder is put in a highly refractory porcelain clay as disclosed in JP-A-63-185849 is known. I have. Also, a method of using waste ash as a raw material for ceramics is widely known.

[0004]

When waste ash or glass-based material (cullet) is used as a raw material for ceramics, it is considered that the cullet or waste ash added to the base material contains metals as impurities. Since the sintering temperature causes cracking and swelling to lower the product value, cullet and waste ash are rarely used as they are after removing metals as impurities.
In tile manufacturing, defective products are ground and used as chamotte in addition to the raw materials for recycling of tile products.

[0005] Waste ash is usually mainly composed of incinerated ash obtained by firing wood products, and in many cases, incinerated ash contains iron, copper, zinc, lead or alloys thereof. For example, in the case of waste ash from a pachinko machine or the like, metals are inevitably mixed in the pulverization process. When the contaminant is iron, it can be separated by applying magnetism, but there is a problem in that it is difficult to separate it from alloys such as stainless steel and the like, so that it cannot be completely recycled.

The present invention has been made to solve these problems, and has as its object the purpose of
By using incinerated ash (waste ash) containing metals such as copper, zinc or lead or their alloys as a raw material for the ceramic industry, to effectively use these incinerated ash and obtain a suitable fired material for building materials It is an object of the present invention to provide a method for producing a fired material for building materials that can be manufactured.

[0007]

The present invention has the following arrangement to achieve the above object. That is, iron, copper, zinc,
The water content of a waste powder containing 5 to 40% by weight of a metal or metal alloy such as lead, a cullet, and a ceramic clay is adjusted for water content, and after shaping into a predetermined shape, 105
It is characterized by obtaining a fired material for building materials by firing at 0 ° C to 1150 ° C. In addition, the ceramic raw material is a waste powder whose water content is adjusted to a moisture content of 3 to 6% by weight ratio of 10 to 6%.
0%, cullet is 10 to 60% by weight, and ceramic clay is 20 to 60% by weight. Further, incineration ash obtained by burning wood-based incineration can be suitably used as the waste powder, and by using waste ash as the incineration ash, waste ash can be effectively utilized. Further, as the waste powder, one obtained by pulverizing waste tile can be suitably used. Further, by using waste glass as the cullet, waste glass can be effectively utilized.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION The method for producing a fired product for building materials according to the present invention uses incinerated ash obtained by burning wood-based waste as a raw material for the ceramic industry. It is also possible to use crushed materials such as crushed materials, ceramic waste, defective tiles, crushed concrete of buildings, crushed ceramic material waste, red mud, and foundry sand dust. These incinerated ash and pulverized material are referred to as waste powder in the present specification, and are characterized in that cullet and clay for ceramics are added to these waste powders to be used as raw materials for ceramics, and are fired under predetermined firing conditions. According to the method of the present invention, waste powder used as a raw material for ceramics is iron,
Even those containing metals such as copper, zinc, lead or alloys of metals as impurities can be used, and those containing these impurities in a considerably large quantitative ratio of about 5 to 40% by weight are used. it can. In addition, by using the waste ash obtained by incineration of the waste and the powder material obtained by pulverizing the waste roof tile, the waste can be effectively used.

[0009] Among the raw materials for ceramics, the waste powder can be used by mixing about 10 to 60% by weight of the whole. In addition, cullet among ceramic raw materials is 10 to 10 by weight.
It can be used by mixing at a rate of about 60%. Waste glass can be used as the cullet, and this allows effective use of the waste glass. The clay for ceramics is used by mixing at a ratio of about 20 to 60% by weight of the raw materials for ceramics. These waste powder, cullet and ceramic clay are appropriately mixed and used within the above range.

The waste powder, cullet, and clay for ceramics are kneaded, and the raw material for ceramics whose moisture content is adjusted to a predetermined moisture content is extruded or press-molded into a desired shape of a fired material for building materials. By adjusting the temperature in the range of 1050 ° C. to 1150 ° C. and firing, a fired product for a building material is obtained.

When fired under these firing conditions, metals such as iron, copper and zinc and their alloys mixed in the waste powder do not completely melt due to the lowering of the melting point of the cullet added to the raw material for ceramics. In addition, these metals are oxidized to give interesting colors. In general, when the firing temperature is high, the metals are completely melted, the color is changed uniformly, and the color is not scattered, but the metal is not fired. It is not uniformly melted and fired in a form in which colors are scattered. In particular, when iron, copper, or stainless steel is contained, a very interesting color is exhibited. The incompletely combusted matters remaining in the incinerated ash are completely fired within the above temperature range, and are sintered homogeneously without hindering the sintering of the clay and the glass.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below. [Example 1] A fired product for building materials was obtained by using woody waste ash as waste powder used as a raw material for ceramics. The waste powder used in this example is incinerated ash obtained by incinerating wood-based waste, and contains 25% of stainless steel by weight before incineration. The amount of raw materials for the ceramic industry is 50% of waste ash, 25% of waste glass powder, 20% of clay for ceramic industry, and 5% of water content by weight.

The raw materials for the ceramic industry were formed by dry press molding to form a molded article having a size of 100 mm × 100 mm and a thickness of 20 mm. The molded article was fired at 1050 ° C. for 5 hours by an oxidation firing method. The fired product was obtained as a rough surface having a rough surface with light green scattered throughout.

[0014] The physical properties of the building material are as follows: JIS standard for floor and exterior use: strength of 120 N / cm or more, wear test of 1 g or less,
It is required that there be no abnormalities in 13 cycles of the frost resistance test. The physical property test results of the fired product obtained in this example are as follows. Water absorption: 13.73% Abrasion resistance: 0.18 g Bending strength: 234 n / cm Freezing damage: 13 cycles No abnormality From these test results, the fired product obtained in the example has satisfactory physical properties as a building material. It was confirmed that there was.

[Example 2] For building materials, waste powder composed of 50% crushed waste tile containing 31% iron by weight and 50% crushed fired clay was used as a raw material for ceramics. A fired product was obtained. The amount of raw materials for ceramic industry is 50% by weight of waste powder, 25% of waste glass powder, 21% of clay for ceramic industry, and 4% of moisture.

[0016] By dry press molding, 100mm x 100
A tile body having a thickness of 20 mm and a thickness of 20 mm was formed and fired at 1080 ° C. for 5 hours by oxidative firing. The fired product was obtained as a rough and rough surface with dark brown spots spread over one surface.

The physical property test results of the obtained fired product are as follows. Water absorption: 3.90% Abrasion resistance: 0.07 g Bending strength: 416 n / cm Freezing damage: 13 cycles No abnormality The fired product of this example satisfies the JIS standard for building materials described above and is sufficient for building materials. It has strength.

Example 3 Waste ash obtained by burning wood-based waste containing 18% iron, 11% copper, and 8% brass by weight before incineration was used as a raw material for ceramics as waste powder. As a result, a fired product was obtained. The amount of raw materials for ceramic industry is 55% of waste ash, 20% of waste glass powder, 15% of clay for ceramic industry, and 5% of water content by weight.

100 mm × 100 by dry press molding
A tile body having a thickness of 20 mm and a thickness of 20 mm was formed and baked by oxidation at 1140 ° C. for 5 hours. The fired product was obtained as a rough and rough surface having a mixture of a light green color and a dark brown mixed color spread all over.

The results of the physical properties test of the obtained fired product are as follows. Water absorption: 1.72% Abrasion resistance: 0.02 g Bending strength: 294 n / cm Freezing damage: 13 cycles No abnormality The fired product of this example also satisfies the JIS standard for building materials described above and is sufficient for building materials. Has strength.

[0021]

According to the method for producing a fired product for building materials according to the present invention, waste powder containing an extremely large amount of metals such as iron, copper and zinc is converted into glass, particularly cullet made of waste glass and ceramics. By kneading with clay and firing
It is possible to bake at a relatively low temperature, and a distinctive metal oxide color of metals is scattered on the surface, and an unprecedented color can be created. Further, by controlling the firing temperature, a water-permeable type fired product having a high water absorption can be produced. Furthermore, the disposal of a pachinko machine for disposal is becoming a major social problem, but according to the present invention, even if the pachinko machine is crushed and fired without removing the electronic components, all the combustion ash can be used. The effect can be exhibited.

Claims (6)

[Claims] A ceramic raw material obtained by mixing a waste powder containing 5 to 40% by weight of a metal such as iron, copper, zinc, lead, or an alloy of a metal, a cullet, and a clay for a ceramic industry. ,
A method for producing a fired product for building material, comprising forming a fired product at 1050 ° C. to 1150 ° C. after molding into a predetermined shape to obtain a fired material for building material. 2. A ceramic raw material is composed of a waste powder whose moisture content is adjusted to a moisture content of 3 to 6%, a weight ratio of 10 to 60%, a cullet of 10 to 60% by weight, and a ceramic clay of 20% by weight. ~ 60
The method for producing a baked product for building materials according to claim 1, wherein each of the baked products is a mixture of the two. 3. The method according to claim 1, wherein the waste powder is incinerated ash obtained by burning wood-based incinerated material. 4. The method according to claim 3, wherein the incinerated ash is waste ash. 5. The method according to claim 1, wherein the waste powder is obtained by pulverizing a waste tile. 6. The method according to claim 1, wherein the cullet is a waste glass.