JP2002029821A - Method for producing block for architecture and construction - Google Patents

Abstract

PROBLEM TO BE SOLVED: To unnecessitate the treatment of waste sludge. SOLUTION: Ash of incinerated garbage, sludge of waste water treatment comprising a slaked lime component, sludge of waste water treatment comprising a mud component, iron powder sludge and stone dust generated in the working of stone are mixed in a volume ratio of about 4:3:1:1:1 to form a waste sludge mixture. The mixture is dehydrated, dried with hot air and comminuted, clay is dried with hot air and comminuted and the mixture and clay are mixed in a volume ratio of about 1:1 to form a waste sludge-clay mixture. The waste sludge-clay mixture is kneaded with a proper quantity of water and compressed to form a molding and the molding is dried with warm air to about 0.5% water content and fired by heating at 1,000-1,200 deg.C.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing a building / construction block.

[0002]

2. Description of the Related Art Conventionally, waste sludge classified as industrial waste is mainly composed of waste incineration ash, wastewater treatment sludge composed of slaked lime components, wastewater treatment sludge composed of mud components,
It consists of iron powder sludge generated during the smelting of minerals or processing of metals, stone powder generated during processing of stones, and the like.

[0003]

However, the conventional waste sludge may be landfilled without being treated. In this case, a large amount of pollutants is discharged from the leachate of the waste sludge. It destroys the natural environment. Moreover, in order to reclaim waste sludge, a large landfill is required, and it is extremely difficult to secure the landfill.

Therefore, it is conceivable to treat the waste sludge by a predetermined sludge treatment method. However, since the waste sludge often contains pollutants exceeding the discharge allowable standard,
The costs for treating waste sludge are increased.

An object of the present invention is to solve the problems of the conventional sludge treatment method and to provide a method for manufacturing a building / construction block which does not require disposal of waste sludge.

[0006]

In order to achieve the object, in the method of manufacturing a building block according to the present invention, waste incineration ash, wastewater treatment sludge composed of slaked lime component, wastewater treatment sludge composed of mud component, iron powder sludge are provided. And mixing the stone powder generated during the processing of the stone in a volume ratio of about 4: 3: 1: 1: 1 to form a mixture of waste sludge,
Dewatering, hot air drying and crushing the clay, hot air drying and crushing, forming a waste sludge / clay mixture by mixing the mixture and clay in a volume ratio of about 1: 1; The waste sludge / clay mixture is kneaded with an appropriate amount of water to form a kneaded material, and the kneaded material is compressed to form a molded product. The molded product has a water content of about 0.5% or less. The hot air-dried molded product is heated to 100
Baking by heating at 0 to 1200 [° C.].

In another method for manufacturing a building / construction block according to the present invention, the iron powder sludge generated during the smelting of minerals is used.

[0008] In still another method of manufacturing a building / construction block according to the present invention, waste casting sand is used as the iron powder sludge.

[0009] In still another method of manufacturing a building / construction block according to the present invention, the iron powder sludge may further include: a material generated during the smelting of minerals;
One mixed at a volume ratio of 1 is used.

[0010] In still another method for manufacturing a building / construction block according to the present invention, the iron powder sludge may be formed of:
One mixed at a volume ratio of 1 is used.

[0011]

Embodiments of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a schematic diagram showing an embodiment of a building according to the present invention.
It is process drawing which shows the manufacturing method of the block for construction.

In general, architectural / construction blocks used for construction or construction are used not only as constituent materials for various buildings and structures, but also laid on sidewalks or roadways, or used as a link between sidewalks and roadways. It is used as a boundary stone between them. The building / construction block is manufactured in the form of a plate, a brick, or the like.

In this case, clay and waste sludge composed of many components are used as materials necessary for manufacturing a building / construction block. The clay is mainly composed of red mud or porcelain clay, is hot-air dried by a hot air blower to such an extent that it can be ground, and is finely ground several times by a grinder.

[0015] The waste sludge is mainly used for incineration ash of garbage, wastewater treatment sludge composed of slaked lime component, wastewater treatment sludge composed of mud component, mineral smelting and metal processing (polishing, cutting, etc.). The iron powder sludge (chips) generated and the stone powder generated during processing of stone materials are about 4:
A mixture is formed by mixing at a volume ratio of 3: 1: 1: 1.

In the present embodiment, the iron powder sludge that is generated during the smelting of minerals and the processing of metal is used, but waste casting sand and sand used in sandblasting are used. A material containing a metal component such as, for example, can also be used. Further, as the iron powder sludge, a mixture produced by mixing the waste generated at the time of smelting of minerals and the waste molding sand in a volume ratio of about 1: 1 may be used. It is also possible to use a mixture in a volume ratio of 1: 1. The strength of the building / construction block can be increased by adding iron powder sludge.

Further, by adding the wastewater treatment sludge composed of the slaked lime component, it is possible to increase the binding force of the mixture of the waste sludge like cement.

Then, the waste sludge is dehydrated by a dehydrator so that the water content becomes about 10% or less, and then dried by a hot air to a degree that enables pulverization. It is finely pulverized several times by a pulverizer.

The finely ground waste sludge and clay are mixed by a mixer at a volume ratio of about 1: 1 to form a waste sludge / clay mixture. Next, the waste sludge / clay mixture is kneaded with an appropriate amount of water to form a kneaded material, and the kneaded material is compressed at a high pressure by a compressor. Form.

Subsequently, the block-shaped molded product is heated at a temperature of 40 to 50 ° C. by a hot air drier, and is dried with hot air so that the water content becomes about 0.5% or less. . Next, the molded product that has been dried with hot air is put into a firing furnace, and heated and fired at a temperature of 1000 to 1200 ° C., thereby forming a building / construction block.

It should be noted that the gas discharged from the firing furnace
When the hot air obtained by cooling to 50 ° C. is used to heat the molded product in the hot air dryer, energy can be saved.

In addition, when paints of various colors are added to the waste sludge / clay mixture, it is possible to obtain various kinds of paints having various colors.
Since the construction block can be obtained, the appearance of the building / construction block can be improved.

[0023] Thus, the construction and construction of waste sludge
The ability to produce building blocks eliminates the need to treat waste sludge. Further, since it is not necessary to reclaim waste sludge, it is possible to prevent the natural environment from being destroyed. And there is no need to secure landfills.

It should be noted that the present invention is not limited to the above-described embodiment, but can be variously modified based on the gist of the present invention, and they are not excluded from the scope of the present invention.

[0025]

As described above in detail, according to the present invention, in a method for manufacturing a building / construction block, waste incineration ash, wastewater treatment sludge composed of slaked lime component, and wastewater treatment sludge composed of muddy component are provided. , Iron powder sludge, and stone powder generated during the processing of stone in a volume ratio of about 4: 3: 1: 1: 1 to form a mixture of waste sludge, which is dewatered and dried with hot air Let it crush,
The clay is dried by hot air and crushed, and the mixture and the clay are mixed in a volume ratio of about 1: 1 to obtain waste sludge.
A clay mixture is formed, the waste sludge / clay mixture is kneaded with an appropriate amount of water to form a kneaded material, and the kneaded material is compressed to form a molded product. [%] Is dried with hot air so as to be not more than [%], and the molded product dried with hot air is heated at 1000 to 1200 [° C.] and fired.

In this case, the building sludge can be manufactured using the waste sludge, so that it is not necessary to treat the waste sludge. Further, since it is not necessary to reclaim waste sludge, it is possible to prevent the natural environment from being destroyed. And there is no need to secure landfills.

Moreover, since the wastewater treatment sludge composed of the slaked lime component is added, the binding power of the waste sludge mixture can be increased like cement. Further, since iron powder sludge is added, the strength of the building / construction block can be increased.

[Brief description of the drawings]

FIG. 1 is a process chart showing a method for manufacturing a building / construction block according to an embodiment of the present invention.

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Claims (5)

[Claims] 1. (a) Waste incineration ash, wastewater treatment sludge composed of slaked lime component, wastewater treatment sludge composed of mud component, iron powder sludge, and stone powder generated at the time of processing stone materials are about 4: 3: 1: 1. A mixture of waste sludge is formed by mixing at a volume ratio of 1: 1; (b) dewatering, hot air drying and crushing the mixture; (c) clay hot air drying and crushing; (d) A) forming a waste sludge / clay mixture by mixing the mixture and clay in a volume ratio of about 1: 1; and (e) kneading the waste sludge / clay mixture with an appropriate amount of water to form a kneaded product. (F) compressing the kneaded material to form a molded product; and (g) forming the molded product having a water content of about 0.5
[%] A method for producing a building / construction block, characterized in that hot air drying is performed so as to be not more than (h), and the molded product subjected to hot air drying is heated at 1000 to 1200 [° C] and fired. . 2. The method for producing a building / construction block according to claim 1, wherein the iron powder sludge generated during smelting of a mineral is used. 3. The method according to claim 1, wherein waste casting sand is used as the iron powder sludge. 4. The building / construction block according to claim 1, wherein as the iron powder sludge, a mixture produced by mixing a waste generated during the smelting of a mineral and a waste molding sand in a volume ratio of about 1: 1 is used. Manufacturing method. 5. The building / construction block according to claim 1, wherein as the iron powder sludge, a mixture generated by mixing a waste generated during processing of metal and a waste casting sand in a volume ratio of about 1: 1 is used. Production method.