KR20090099148A - Manufacturing method of caly bricks using salt water - Google Patents

Abstract

A method for manufacturing clay bricks using salty water is provided to sinter a molding at low temperature of 750 ~ 850°C in order to save a production cost by 20% or more using salty water. A method for manufacturing clay bricks using salty water comprises the following steps of: mixing 75-85wt% of a base material, 5-15wt% of salty water, 2-5wt% of sand, 2-5wt% of graphite and 3-5wt% of anthracite coal, wherein the base material consists of 45-65wt% of clay and 35-55wt% of kaolin and the salty water represents sea water or waste water from aquarium; molding the mixture; and drying at 50 ~ 100°C for 40-55 hours and sintering the moldings. The apparent viscosity of the clay is 50cp ~ 100cp. The salty water contains 3-5% salinity.

Description

MANUFACTURING METHOD OF CALY BRICKS USING SALT WATER}

The present invention relates to a method for producing a clay brick using brine containing salts, such as salt water, sea water.

In general, the term clay refers to plasticity when mixed with an appropriate amount of water, and refers to a fine mineral that is produced on natural surface. The concept of clay is a particle size or particle size in each field. Clay as a concept, clay as a concept of mineral composition, and clay as a soil concept are treated differently. It is the clay floor brick that is baked by applying artificial heat to such clay. The reason for baking is to apply artificial heat to express strength as a building packaging material.

Regarding the manufacture of clay bricks, Republic of Korea Patent No. 10-0536880 (Notice date 2005.12.19) 'Low-temperature sintered ceramic clay brick and floor clay brick using solid waste and its manufacturing method', Republic of Korea Patent No. 10-0691644 (Notification date 2007.03.09) 'clay bricks containing coal waste-rock and manufacturing method of the clay bricks', Korean Patent Publication No. 10-2008-0010146 (2008.01.30) 'clay bricks using titanium dioxide sludge and its manufacturing method' Various techniques are disclosed.

However, when looking at the manufacture of most clay bricks, including the patent, it can be seen that it consumes a lot of energy to maintain a high temperature during the firing process.

It is very important to find ways to prevent energy consumption at the present time when energy resources are scarce all over the world. Especially, in Korea, most energy sources are dependent on overseas countries. Seeking is urgent.

Accordingly, the present applicant has been aware of the problem that a lot of heat energy is used in the firing process during the manufacturing process of the clay brick in accordance with such a flow, thereby finding a way to solve the problem.

In order to solve the above problems, the present invention is usually made at a temperature of 1,000 ℃ or more during the manufacturing process of the clay brick in the clay manufacturing process to lower the firing temperature to prevent the enormous amount of energy consumed Energy can be saved by lowering the firing temperature by using brine (sea water, aquarium water containing salt) in place of the commonly used water, and furthermore, it can prevent environmental pollution by recycling the waste water in the aquarium. It is an object of the present invention to provide a method for producing clay brick using brine.

In order to achieve the above object, the present invention is 75 to 85% by weight of the mixture mixture is composed of a mixture of 45 to 65% by weight of clay and 35 to 55% by weight of kaolin,

5 to 15% by weight of salt water, which is seawater or aquarium wastewater,

2 to 5% by weight of sand, 2 to 5% by weight of graphite, and 3 to 5% by weight of anthracite coal were molded and dried for 40 to 55 hours at 50 to 100 ° C and 20 to 25 hours at a temperature of 750 to 850 ° C. Clay brick manufacturing method using the brine prepared by firing is the main technical configuration of the invention.

Clays differ in physical properties, but are made from surface clays, high pressure clays, and deep underground, depending on similar chemical components, and clays of uniform quality and low oxides. It appears in three forms. And clay is produced mainly by weathering of rocks such as feldspar and mica. The clay produced at this time remains in the place where it is weathered, whereas the clay produced is far from the action of water and wind. The clay that has been transported and deposited is called this clay and the color is colored due to the organic matter contained during the movement.

Brick clay is a mixed clay suitable for the production of red lead (architecture). Generally, it is a mixed clay which is widely buried in the lower layer of the field or the lower part of the mountain, and has a high iron content. Job clay contains various impurities (organic substances, etc.), so several kinds of clay are put in the feeder and a clay process by roll crusher, screen filter, etc. is necessary.

There are three main types of clay bricks: basic type, special type and attached type. Basic bricks are rectangular bricks of length: width = 1: 2 and width: height = 1: 2, which is the most common and representative standardized brick among them.

Specifications vary by country. Special bricks are bricks that are used for special constructions, so they are manufactured by order production without a certain type. Attached bricks are standardized according to the basic type, but are not standardized and manufactured by order production, such as arch bricks, threshold bricks, corner bricks, and various decorative bricks.

Clay has an apparent viscosity of 50 cps to 100 cps and is mixed with kaolin at a rate of 45 to 65 wt%. In this case, when the amount of clay used is less than 45% by weight, the strength of the clay brick is lowered, and when it exceeds 65% by weight, there is a problem of inferior light weight. It is preferable.

Viscosity in clay is defined as the degree of resistance to external strain of fluidic clay suspension (apparent viscosity of water: 1 cp), which is usually associated with clay particle size, which is generally the size of clay particles. The smaller is, the value increases. In addition, the viscosity of the clay changes sensitively depending on the mineral species, degree of hydration, particle size, as well as temperature of the clay mineral.

The kaolin is a material mainly composed of kaolinite (Al ₂ O _{3 ·} 2 SiO ₂ · 2H ₂ O) and halosite (Al ₂ O ₃ · SiO _{2 ·} 4H ₂ O), and is composed of feldspar, feldspar, soda feldspar, Feldspar, such as feldspar, is produced by weathering, which is chemically degraded by carbonic acid or water. When the kaolin is used in an amount of less than 35% by weight with respect to the clay, the strength of the brick becomes weak due to the weakening of the binding strength of the brick component, and when the content is more than 55% by weight, the light weight of the brick is inferior. It is preferable to use in the ratio of 35 to 55% by weight relative to.

The main mixture formed by mixing the clay and kaolin is made of clay brick by mixing with brine, sand, graphite, anthracite, and firing, and the main mixture is used at 75 to 85% by weight of the total content. If it is less than%, the strength of the brick is lowered, and if it is more than 85% by weight, the weight is inferior. Therefore, it is recommended to use 75 ~ 85% by weight of the main mixture formed by mixing clay and kaolin. desirable.

The brine can be used salt water, salt water or aquarium water having a salt concentration of 3 to 5%, when the salt concentration is less than 3%, it is difficult to lower the firing temperature, if the salt exceeds 5% durability of the clay brick Since it may fall, the salt concentration of the brine is preferably maintained at 3 to 5%.

The use of brine in the manufacturing process of clay bricks uses the wastewater from the aquarium which uses seawater in the seawater or urban sushi restaurant instead of the conventionally used water. Can be lowered.

Specifically, the firing temperature is generally maintained at 1,000 to 1,200 ° C. in the manufacture of bricks using water, but in the case of the present invention using brine, the firing temperature can be lowered to 750 ° C. to 850 ° C., thus providing energy resources. You can expect saving.

Therefore, the use of brine is very efficient in terms of saving energy sources such as oil, and wastewater, such as aquarium, can be recycled, which is very effective in preventing environmental pollution. The expected savings ratio by lowering the firing temperature is 20%.

The brine is used 5 to 15% by weight based on the total content, if less than 5% by weight may not be easy to lower the firing temperature, when used in excess of 15% by weight of the brick Since the strength may drop, it is preferable to use the brine in 5 to 15% by weight of the total content of the components used in the manufacture of bricks.

And in addition to the clay brick for the production of 2 to 5% by weight, 2 to 5% by weight graphite, 3 to 5% by weight anthracite coal is used.

After molding into a brick using a mixture of the above components to dry for 40 to 55 hours at 50 ~ 100 ℃ and then baked for 20 to 25 hours at a temperature of 750 ~ 850 ℃ to prepare a clay brick.

When the drying temperature is less than 50 ℃ is a lot of energy consumption during the firing process, if it exceeds 100 ℃ may be a problem in the durability of the brick, the drying temperature is to maintain 50 ~ 100 ℃ desirable.

When the firing temperature is less than 750 ° C, the strength of the bricks decreases, and when the firing temperature is 850 ° C, unnecessary energy is used, which is inefficient, so the firing temperature is preferably maintained at 750 to 850 ° C.

The clay bricks thus prepared can be used as floor bricks or masonry clay bricks, depending on the application.

As described above, the clay brick using the brine according to the present invention is fired to 1,000 ~ 1,200 ℃ when manufactured by combining the conventional water using brine such as seawater or brine instead of the water used in the conventional brick manufacturing It can be fired at a low temperature of 750 ~ 850 ℃ due to salinity, so it can save more than 20% of oil, which can drastically reduce cost. Water pollution can be prevented by collecting and utilizing wastewater from an aquarium that uses sea water among restaurants in downtown sushi. The surface of the fired product is naturally shiny to give the effect of glaze and express aesthetic sense. The salt acts as an insect repellent and sterilizer, which is beneficial as an interior or exterior building material.

Hereinafter, the specific content of the above-described technical configuration will be described through an embodiment.

Residual mixture formulation

Example 1

600 kg of finely ground clay, 0.5 mm in size, is combined with 400 kg of kaolin.

Example 2

550 kg of finely ground clay, 0.5 mm in size, is combined with 450 kg of kaolin.

Clay brick manufacturing

Example 3

850 kg in 1000 kg of the host mixture of Example 1,

50 kg of seawater, 50 kg of sand, 20 kg of graphite, and 30 kg of anthracite are mixed together to form a brick, and then dried at 100 ° C. for 40 hours and then calcined at 800 ° C. for 20 hours.

Example 4

850 kg in 1000 kg of the host mixture of Example 2,

50 kg of salt, 50 kg of sand, 50 kg of graphite, 20 kg of graphite and 30 kg of anthracite are mixed together to form a brick, dried at 90 ° C. for 43 hours, and then calcined at 820 ° C. for 22 hours.

The clay brick thus produced was able to drop a temperature of 1,000 ° C. or higher than that used in the prior art to less than 850 ° C. without showing a large difference in physical aspect compared to conventional bricks (Table 1).

Absorption rate, compressive strength, and flexural strength of the clay brick prepared in Example 4 are as follows.

Table 1) Physical properties of existing clay bricks and clay bricks of the present invention

division  Clay brick of the present invention (Example 4) General Clay Brick (KS Standard) Absorption rate (%) Within 7% 10% Compressive strength (n / ㎡) 25.9 20.6 Flexural strength (Mpa) 5.5 5.0

Claims (4)

75-85% by weight of the premix mixture composed of 45-65% by weight of clay and 35-55% by weight of kaolin, 5 to 15% by weight of brine, which is seawater or aquarium wastewater, Clay with salt water, characterized in that it is produced by mixing sand 2 ~ 5% by weight, graphite 2 ~ 5% by weight, anthracite coal 3 ~ 5% by weight and dried for 40 to 55 hours at 50 ~ 100 ℃ Brick manufacturing method. The method of claim 1, wherein the clay has an apparent viscosity of 50cp ~ 100cp of clay clay brick manufacturing method using the floor clay brick. The method of claim 1, wherein the brine is a clay brick manufacturing method using the salt, characterized in that containing 3 to 5% salt. The method of claim 1, wherein the calcination is a clay brick manufacturing method using a brine, characterized in that for 20 to 25 hours at a temperature of 750 ~ 850 ℃.