KR20080111876A - Solidification agent, and the nonsintering clay bricks and process for preparing the bricks using the agent - Google Patents

Abstract

A firming agent is provided to manufacture unfired loess brick and related goods using the firming agent, to emit far infrared rays, to maintain breathable, humidity and temperature control function and to show sufficient intensity. A firming agent comprises an organic firming agent and an inorganic firming agent. The organic firming agent includes one or more selected from a group consisting of poly carboxyl copolymer comprising poly(meta)acrylate, naphthalene sulfonic acid polymer, melamine sulfonate polymer and polyvinyl copolymer. The inorganic firming agent is one or more selected from a group consisting of aluminium sulfate, inorganic iron, ferric sulfate and ferric chloride.

Description

Solidification agent and non-fired ocher brick using the same and method for manufacturing the same {Solidification agent, and the nonsintering clay bricks and process for preparing the bricks using the agent}

The present invention relates to the development of a general purpose hardener capable of solidifying ocher and general waste to make bricks and related products, and to a method for producing non-fired ocher bricks and related products using the developed hardener. The method for manufacturing non-fired ocher bricks and related products using the solidifying agent of the present invention is manufactured according to a general cement brick production method without undergoing a firing process which is a production method of conventional fired ocher bricks. The effect obtained by the present invention has the texture, color and durability of the conventional fired ocher bricks without going through the firing process. And by going through the non-firing process, it is possible to save enormous energy, but has a temperature and humidity control function that the conventional brick does not have.

Cement, which has been known since the middle of the 19th century, has been widely used in various buildings because of its superiority and convenience, and the soil used before was greatly reduced as a building material. However, condensation occurs frequently in buildings built with cement due to poor temperature and humidity control and air permeability, which causes mold to grow, and also harmful to new buildings due to various harmful substances generated in cement. This is often mentioned.

Therefore, in order to reduce the harmfulness of the cement and to impart temperature and humidity control functions and breathability, environmentally friendly soil is used again for building materials. Among such soils, yellow soil emits far-infrared rays, which are beneficial to the human body, and has excellent humidity control and temperature control functions, and does not cause environmental pollution during disposal, and has characteristics of suppressing construction wastes. Its use is increasing in materials.

In the case of manufacturing construction materials, especially bricks using such loess, ocher is used as the main raw material, and mica and white cement are mixed at a predetermined ratio, and then dried and calcined at a high temperature of about 1100 ° C. to give durability. The process of doing so is essential. This high-temperature firing process consumes a variety of energy, and in combination with the recent high oil prices, such energy consumption has a great effect on the production cost, thereby lowering economic efficiency, which in turn leads to a weakening of the competitiveness of ocher bricks. Will continue. However, when the ocher brick is manufactured without the firing process, it is difficult to obtain an appropriate strength as a building material due to the weakening of the cohesive force of the ocher.

Therefore, there is a need for a new technology that can maintain the durability of the ocher brick without using the firing process.

The technical problem to be achieved by the present invention is the development of a general purpose hardener that can solidify ocher and general waste to make bricks and related products, and non-plastic ocher bricks and related products that have not undergone a firing process using the developed hardener. It is to provide a manufacturing method.

The present invention develops a general purpose hardener that solidifies ocher and general waste to make bricks and related products, and provides a method for producing non-fired ocher bricks and related products using the developed hardener.

In order to achieve the above technical problem, the present invention includes an organic solidifying agent and an inorganic solidifying agent, wherein the organic solidifying agent is a polycarboxyl copolymer comprising a poly (meth) acrylate, a naphthalene sulfonic acid polymer, a melamine sulfonate polymer, At least one selected from the group consisting of polyvinyl copolymers, and the inorganic hardener includes at least one selected from the group consisting of aluminum sulfate, ferrous sulfate, ferric sulfate, and ferric chloride.

According to one embodiment of the present invention, the content ratio of the organic solidifying agent and the inorganic solidifying agent in the solidifying agent may be used 10 to 10,000 parts by weight of the inorganic solidifying agent with respect to 100 parts by weight of the organic solidifying agent.

According to one embodiment of the present invention, the solidifying agent may further include a polymer additive, and such a polymer additive may be used in an amount of 1 to 300 parts by weight based on 100 parts by weight of the organic solidifying agent.

According to one embodiment of the present invention, a cellulose-based material is preferable as the polymer additive.

The present invention to achieve the above other technical problem,

ocher; ash; cement; And dry at least one of sand, nominal yarn and doromite, and together with the solidifying solution solution to provide a non-fired ocher brick obtained by solidification under dry at room temperature.

According to one embodiment of the present invention, with respect to 100 parts by weight of cement, at least 10 to 200 parts by weight, 10 to 800 parts by weight of ocher, 10 to 100 parts by weight of ash, 10 to 100 parts by weight of an aqueous solution of a solidifying agent, at least one of sand, bosa and road mite It is preferable to use from 300 parts by weight.

According to one embodiment of the present invention, it is preferable that the aqueous solution of solidifying agent is dispersed or dissolved in 100 parts by weight of 1000 parts by weight of the solidifying agent.

The present invention to achieve the above other technical problem,

Classifying the loess according to size;

Classified ocher; ash; cement; Mixing at least one of sand, nouns and doromite; to obtain a dry mixture;

Kneading by adding an aqueous solution of solidifying agent to the dry mixture;

Shaping the kneaded mixture;

It provides a method for producing a non-baking ocher brick comprising a; and drying the molded dough mixture at room temperature.

Hereinafter, the present invention will be described in more detail.

The present invention provides a solidifying agent that does not require a firing process when manufacturing various building materials, including bricks, and does not undergo a firing process while using ocher, which is a component that is harmless to the human body, and has a large energy saving effect. The present invention provides an ocher brick having improved durability, breathability, and a temperature and humidity control function and a method of manufacturing the same.

The solidifying agent according to the present invention includes an organic solidifying agent and an inorganic solidifying agent, wherein the organic solidifying agent is a polycarboxyl copolymer consisting of poly (meth) acrylate, a naphthalene sulfonic acid polymer, a melamine sulfonate polymer, a polyvinyl copolymer At least one selected from the group consisting of, wherein the inorganic solidifying agent includes at least one selected from the group consisting of aluminum sulfate, ferrous sulfate, ferric sulfate, and ferric chloride.

The content ratio of the organic hardener and the inorganic hardener in the hardener may be 10 to 10,000 parts by weight of the inorganic hardener based on 100 parts by weight of the organic hardener. If the content of the inorganic solidifying agent is less than 10 parts by weight based on 100 parts by weight of the organic solidifying agent, there is a problem in that the efficiency of flocculation is lowered, and when it exceeds 10,000 parts by weight, the inorganic solidifying agent is a problem of inhibiting the brick molding. Not.

Aqueous solution of the first poly (meth) acrylate polycarboxyl copolymer, for example, in the polycarboxyl copolymer comprising the naphthalene sulfonic acid polymer, the melamine sulfonate polymer, the polyvinyl copolymer, and the poly (meth) acrylate as the organic curing agent (Solid content; 40 ± 1%, viscosity; 200 ± 100 cps, specific gravity (20/4 ° C.); 1.12 ± 0.02, pH; 7 ± 1), second poly (meth) acrylate aqueous solution (solid content; 40 ± 1%, Viscosity; 250 ± 100 cps, specific gravity (20/4 ° C.); 1.13 ± 0.02, pH; 7 ± 1). Here, both the first poly (meth) acrylate aqueous solution and the second poly (meth) acrylate aqueous solution can be used, but if necessary, naphthalene sulfonic acid polymer, melamine sulfonate polymer, polyvinyl copolymer, second poly (meth) acrylic You may use only one group which consists of an aqueous rate solution.

Particularly, the first poly (meth) acrylate aqueous solution (solid content; 40 ± 1%, viscosity; 200 ± 100 cps, specific gravity (20/4 ° C.); 1.12 ± 0.02, pH; 7 ± 1) is 39 to carboxylic acid copolymer. It is an aqueous solution containing 41% by weight and is a fluidizing agent marketed under the product name CP-WB by LG Chem. The second polymethacrylate aqueous solution (solid content; 40 ± 1%, viscosity; 250 ± 100 cps, specific gravity (20/4 ° C.); 1.13 ± 0.02, pH; 7 ± 1) also contains 39 to 41% by weight of carboxylic acid copolymer. It is an aqueous solution included and is a product marketed under the product name CP-WR by LG Chemical as a water reducing agent for cement. Naphthalene sulfonic acid polymers, melamine sulfonate polymers and polyvinyl copolymers are also used as cement water reducing agents. The first polymethacrylate aqueous solution and naphthalene sulfonic acid polymer, melamine sulfonate polymer, polyvinyl copolymer, and second polymethacrylate aqueous solution may be subjected to steric hindrance and electrostatic repulsion through physical or chemical adsorption to cement clinker particles. Induces dispersion between particles, thereby delaying the water-reducing effect and the initial hydration rate, thereby improving workability.

In the solidifying agent used in the present invention, the second polymethacrylate aqueous solution, naphthalene sulfonic acid polymer, melamine sulfonate polymer, and polyvinyl copolymer have a large role as a water reducing agent, and are preferably 0.1% to 1% by weight of the total solidifying agent. It is more preferable that it is 0.4% to 0.7% by weight, but less than 0.1% by weight is not preferable because sufficient solidification does not occur, and when it exceeds 1% by weight, it hinders the increase in manufacturing cost and stabilization of waste due to overuse. Therefore, it is not preferable.

Accordingly, the first and second polymethacrylate aqueous solutions, naphthalene sulfonic acid polymers, melamine sulfonate polymers, and polyvinyl copolymer aqueous solutions are preferably maintained in a balanced ratio as described above for proper solidification and stabilization of industrial waste.

In addition, the aluminum sulfate contained in the inorganic solidifying agent is preferably an aqueous solution of 1 to 8% by weight, and these are coagulated, preferably 2 to 6% by weight of the total solidifying agent, more preferably 3 to 4% by weight. However, if it is less than 1% by weight, it is not preferable because coagulation does not occur sufficiently. If it exceeds 8% by weight, it is not preferable because precipitation occurs.

Such a hardener may further include a polymer additive, and examples of the polymer additive include cellulose (product name: micelles) and the like. These polymer additives play a role in stabilizing the unreacted ocher particles in the coagulation reaction. Such polymer additives may be used in an amount of 1 to 300 parts by weight based on 100 parts by weight of the organic hardener, and if the content is less than 1 part by weight, there is no problem at all. This is not desirable because there is a problem of losing competitiveness in the market due to rising costs.

The solidifying agent is preferably used after being dispersed or dissolved in an aqueous solvent such as water to form an aqueous solidifying agent solution. Such an aqueous solution of solidifying agent may be prepared by dispersing or dissolving 100 parts by weight of the solidifying agent including the organic and inorganic curing agents in 1000 to 100000 parts by weight of water. If the content of the water is less than 1000 parts by weight, there is a problem that the formation of the molded body (brick) is not performed.

The ocher bricks according to the present invention are obtained by dry mixing ocher, ash, cement, sand and sand substitutes (bomsa, roadmite), and solidifying them after kneading with a water-soluble hardener and drying at room temperature.

The solidified aqueous solution obtained as described above may be usefully used in the manufacture of various building materials including ocher bricks.

Ocher brick according to the present invention is ocher; ash; cement; And dry at least one of sand, nominal yarn, and doromite, which are obtained by kneading together with the aqueous solution of the solidifying agent and then solidifying the mixture under normal temperature drying.

The ocher bricks use the solidifying agent in order to have sufficient durability, that is, strength as a building material, without undergoing a firing process. Such a hardener solidifies components such as ash and loess through a pozzolanic reaction that reacts with calcium hydroxide produced by the cement hydration reaction to form calcium silicate hydrate. Therefore, it exhibits sufficient coagulation force without having to undergo a separate firing process to have sufficient strength required as a building material. As the sintering process becomes unnecessary, the fuel required for sintering is unnecessary, which increases energy saving effect. In addition, it is possible to prevent the reduction of the far-infrared generation amount of the loess and to preserve the overall physical properties of the loess. .

By varying the concentration of the aqueous solution of solidifying agent, the coagulation reaction rate can be easily controlled. Since the solidifying agent causes a special hydration reaction, it has a wide reaction temperature range as compared with conventional materials, and can be easily used even in high temperature, high humidity, and cold paper.

In addition, the solidifying agent used in the present invention may react with Ca (OH) ₂ generated by the hydration of cement to cause a pozzolanic reaction to change aluminum and calcium silicate into a hydrate, thereby improving the physical properties of the concrete. Ocher bricks made using a topical agent exhibit more than the standard strength.

The above solidifying solution may be used in an amount of 10 to 300 parts by weight based on 100 parts by weight of the cement. If the amount of the solidifying solution is less than 10 parts by weight, there is a problem in that the formation of a molded body (brick) is not made. When it exceeds weight part, there exists a problem of the strength fall of a molded object, and it is unpreferable.

The ocher bricks according to the present invention include ash, cement, sand and / or sand substitutes (e.g., boehmite, etc.) as main components in addition to loess, and these may be used without limitation as long as they are used for construction.

The ash is different in the amount and characteristics of coal ash generated according to the combustion method of coal. In general, the combustion method is classified according to the particle size and combustion process of coal input to the initial combustion furnace used. Currently, domestic coal-fired power plants use pulverized coal combustion without exception. Pulverized coal combustion furnaces pulverize finely 80% of the coal to less than 74㎛ and inject it into the combustion furnace with air to combust it. It is known that more than 80% of coal ash is discharged to the fly ash, and more than 65% of the fly ash discharged is fine particles of 10 μm or less. Coal is pulverized in a pulverized coal furnace (70 ~ 80% through 200mesh sieve) and injected at high speed with hot air gas, and most of the carbon contained in the coal is suspended in the temperature range of 1,500 ± 200 ℃ above the ignition point. It burns instantly. Domestic coal (anthracite) contains 30 to 50% of ash, and coal (briquette) contains about 10 to 15% of ash, which becomes coal ash after combustion in a boiler. Various physical and chemical properties change over time. Pulverized coal is combusted and discharged from the boiler together with flue gas and collected at the bottom of the dust collector. This ash is called fly ash (飛灰, 75-90%), and it has a large mass of particles or particles falling at the bottom of the boiler. It is called ash (10-25%). Batam ash (B / A) is crushed by a grinder is mixed with the fly ash (F / A) is usually transported to the ash processing landfill.

In the present invention, any one of the fly ash, batam ash or a mixture thereof may be used, and they may be used in an amount of 10 to 200 parts by weight based on 100 parts by weight of cement. If the ash content is less than 10 parts by weight, sufficient strength cannot be obtained. If the ash content is more than 200 parts by weight, there is a problem in workability, which is not preferable.

The sand used in the present invention may be used without limitation as long as it is used in the art, and may include coarse sand having a particle diameter of 1 to 3 mm (wangsa), fine sand having a particle diameter of 0.5 to 1 mm (medium sand), and a fine thread having a particle diameter of 0.5 mm or It is also possible to mix and use these.

Such sand and sand substitutes (bosa yarn, road mite) can be used in an amount of 10 to 500 parts by weight with respect to 100 parts by weight of cement, and if the content of sand is less than 10 parts by weight, there is a problem such as reduced strength, 500 If the content exceeds the weight part, there is a problem such as a decrease in strength, which is not preferable.

Such cement, loess, ash, sand and / or sand substitutes (bomsa, roadmite), etc. are dry mixed together, and then kneaded using an aqueous solution of a hardener. At this time, the amount of the solidifying solution used may be used in an amount of 10 to 300 parts by weight based on 100 parts by weight of the cement.

The process of manufacturing ocher bricks using a hardener together with the cement, ocher, ash, sand and sand substitutes (bomsa, roadmite) is largely divided into ocher preparation process, dry mixing process, kneading process, brick forming process. And drying processes.

First, the ocher preparation process is a process of classifying and drying the prepared high quality ocher by size, classifying the ocher to a certain size by filtering a sieve of a predetermined size, for example, 200 to 250 mesh, and then drying it at room temperature It means the process which makes the water content rate of to become at least 10% or less. The removal of the moisture in the ocher facilitates the mixing process with other materials later.

Ash, sand, and sand substitutes (e.g., road mite), and cement, together with the classified loess are prepared and dry mixed using an industrial mixer suitable for powder mixing. At this time, with respect to 100 parts by weight of cement, 10 to 500 parts by weight of sand, 10 to 800 parts by weight of ocher, 10 to 100 parts by weight of ash, and put into the mixer, and the mixer is operated for about 3 to 5 minutes to mix them sufficiently. A dry mixture is obtained.

Subsequently, a process of kneading the mixture is performed, and such a dough may be added to the mixture with an appropriate amount of solidifying solution, and then kneaded or kneaded using a kneading machine to simultaneously obtain the effects of kneading and compacting.

The dough mixture obtained through the dough is then subjected to a brick forming process. The dough mixture is put into a brick forming mold and pressed at a predetermined pressure, for example, 100 kg / cm ² , extruded into a brick to form an ocher brick. The stacks do not overlap each other.

The molded ocher brick is subjected to a drying process, whereby the molded brick is dried at room temperature in the shade as much as possible. This drying process may be carried out under different conditions depending on the size of the molded brick, conditions such as ambient temperature and humidity, it is preferable to dry at room temperature in the shade as possible to avoid cracking, the surface and the interior of the ocher brick It is good to dry it evenly. The drying time varies depending on the climatic conditions, but drying is preferably about 28 to 30 days. The ocher brick obtained through such a drying process has a standard strength of more than 80 kg / cm ² based on the 28-day strength without firing or glazing at a high temperature as in the conventional brick manufacturing process.

Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited thereto.

Example 1

High quality ocher was filtered by sieve of 200 mesh size and dried at room temperature to prepare ocher powder.

200 parts by weight of the prepared ocher powder, 50 parts by weight of batam ash, 100 parts by weight of cement and 200 parts by weight of sand were put in an industrial mixer, which was operated for 5 minutes to obtain a dry mixture.

At this time, 100 parts by weight of an aqueous solution containing 0.5 parts by weight of a polycarboxyl copolymer, 4 parts by weight of aluminum sulfate, and 4 parts by weight of cellulose was used as the solidifying solution.

The resulting dough was placed in a brick forming mold and pressed at a pressure of 100 kg / cm ² to extrude into a brick, and then they were alternately stacked at intervals of 7 cm.

The molded bricks were dried for 28 days in a well-ventilated place to produce the desired ocher bricks.

Example 2

High quality ocher was filtered by sieve of 200 mesh size and dried at room temperature to prepare ocher powder.

200 parts by weight of the prepared ocher powder, 50 parts by weight of batam ash, 100 parts by weight of cement and 200 parts by weight of a sand substitute material (doromite) were put in an industrial mixer, which was operated for 5 minutes to obtain a dry mixture.

At this time, 100 parts by weight of an aqueous solution containing 0.5 parts by weight of a polycarboxyl copolymer and 4 parts by weight of aluminum sulfate and 4 parts by weight of cellulose was used as the solidifying solution.

The resulting dough was placed in a brick forming mold and pressed at a pressure of 100 kg / cm ² to extrude into a brick, and then they were alternately stacked at intervals of 7 cm.

The molded bricks were dried for 28 days in a well-ventilated place to produce the desired ocher bricks.

Example 3

High quality ocher was filtered by sieve of 200 mesh size and dried at room temperature to prepare ocher powder.

200 parts by weight of the prepared ocher powder, 50 parts by weight of batam ash, 100 parts by weight of cement and 200 parts by weight of sand were put in an industrial mixer, which was operated for 5 minutes to obtain a dry mixture.

At this time, 100 parts by weight of an aqueous solution containing 0.5 parts by weight of naphthalene sulfonic acid polymer, 4 parts by weight of aluminum sulfate, and 4 parts by weight of cellulose was used as the aqueous solution solidifying agent.

The resulting dough was placed in a brick forming mold and pressed at a pressure of 100 kg / cm ² to extrude into a brick, and then they were alternately stacked at intervals of 7 cm.

The molded bricks were dried for 28 days in a well-ventilated place to produce the desired ocher bricks.

The solidifying agent according to the present invention is useful because it does not require a sintering process in the manufacture of various building materials, and the ocher brick obtained by using the same has sufficient strength for building materials, and emits far-infrared rays, which is an advantage of loess, and breathability. In addition, since the humidity and temperature control functions can be maintained, they can be used in various materials as not only exterior materials of various buildings but also interior materials or structures such as indoor fireplaces.

Claims (7)

Organic and inorganic hardeners, The organic solidifying agent comprises at least one selected from the group consisting of polycarboxyl copolymers consisting of poly (meth) acrylates, naphthalene sulfonic acid polymers, melamine sulfonate polymers, polyvinyl copolymers, And an inorganic hardener comprising at least one selected from the group consisting of aluminum sulfate, ferrous sulfate, ferric sulfate and ferric chloride. The method of claim 1, A solidifying agent comprising 10 to 10,000 parts by weight of an inorganic solidifying agent with respect to 100 parts by weight of an organic solidifying agent. The method of claim 1, It further comprises a polymer additive, Solidifying agent, characterized in that the polymer additive is 1 to 300 parts by weight based on 100 parts by weight of the organic solidifying agent. ocher; ash; cement; And at least one of sand, nominal yarn, and doromite; dry mixed together, and a non-fired product obtained by solidifying the mixture with an aqueous solution of a solidifying agent according to any one of claims 1 to 3 after kneading under normal temperature drying. Ocher bricks. The method of claim 4, wherein With respect to 100 parts by weight of cement, at least 10 to 200 parts by weight, 10 to 800 parts by weight of ocher, 10 to 100 parts by weight of ash, 10 to 300 parts by weight of an aqueous solution of solidifying agent is used. Non-plastic ocher bricks. The method of claim 4, wherein Non-fired ocher brick, characterized in that the aqueous solution of the solidifying agent is dispersed or dissolved 100 parts by weight of the solidifying agent according to any one of claims 1 to 3 in 1000 to 100000 parts by weight of water. Classifying the loess according to size; Classified ocher; ash; cement; Mixing at least one of sand, nouns and doromite; to obtain a dry mixture; Kneading by adding an aqueous solution of a hardening agent according to any one of claims 1 to 3 to the dry mixture; Shaping the kneaded mixture; And Method for producing a non-baking ocher brick comprising; drying the molded dough mixture at room temperature.