KR100327729B1 - a method of preparation for ultra light-weight, porous, inorganic material and a material thereof - Google Patents

Abstract

The present invention relates to an ultra-light porous inorganic composition and a method for manufacturing the same, comprising: a grinding step of grinding a raw material into a size of 10-120 mesh; A step of blending and injecting a pulverized raw material into which the pulverized raw material obtained in the electric pulverizing step is blended, and at the same time as the blending, a reagent which is made of diamond is added at 2-7% to the total weight of the raw material to be blended; Press press and molding process of press-pressing and shaping | molding what was obtained in the mixing | blending process of the electric grinding | pulverization raw material, and the reagent addition process at the pressure of 450-1200 mmHg; It consists of a firing process in which the pressurized and molded product obtained in the electric press press and molding process is calcined at a temperature of 1000-1300 ° C. in the kiln, and is a composition that is harmless to the human body and has a high strength because it is extremely lightweight and inorganic. Therefore, compared to the conventional waste recycling technology, there are a variety of raw materials that can be recycled, so it is easy to purchase raw materials, and is simple in the recycling process, and furthermore, the composition according to the present invention is used for cement-based products, lightweight exterior materials, sound absorbing materials or soundproofing materials, fire-resistant products, Significantly expands to styropol substitutes, buffers and noise absorbers, microorganisms, bleaching agents, buoyancy materials, etc., and does not generate waste by repeating the above process again or mixed with ordinary cement after use. Has

Description

Ultra-light porous inorganic composition and method for preparing the same {a method of preparation for ultra light-weight, porous, inorganic material and a material

The present invention relates to an ultra-light porous inorganic composition and a method for manufacturing the same, and more specifically, marble, tile and other construction waste, industrial waste and other various wastes can be safely treated in a more efficient manner, and at the same time the processed material is a building material The present invention relates to an ultra-light porous inorganic composition that can be widely and widely recycled as a wall, soundproofing material, heat insulating material, fireproofing material, decoloring material, exterior material, thermal insulation, cold storage material, cushioning material, and the like, and a manufacturing method thereof.

Today, the growth rate of hazardous wastes containing harmful substances such as heavy metals and dioxins, which are derived from the development of the industrial society, is being accelerated, but the technology for economically and safely treating these wastes reaches a limit and becomes a serious social problem. There is a situation. Conventional methods of waste treatment mainly include chemical incineration and physical underground landfill, but the former requires excessive treatment costs, which is disadvantageous in terms of economics and also causes secondary pollution of air pollution due to incineration. The latter has some advantages in terms of economic feasibility, but it is difficult to secure landfills and secondary pollution such as groundwater pollution is inevitable.

Accordingly, the law on the conservation of resources and the promotion of recycling has recently been enacted in Korea, and various production facilities for recycling have been started to be produced and utilized, and various unique waste recycling methods have been proposed. For example, in Patent Application No. 90-21251, industrial waste, which causes various pollutions, is physically compressed using a high-pressure press machine and formed into a high density aggregate, which is stored in a concrete box and used as a foundation material for civil engineering. It suggests ways to safely treat and recycle industrial wastes.

However, wastes that can be recycled to the conventional high density aggregates are limited to industrial wastes, and their recycling uses are limited to foundation materials for civil engineering.

Accordingly, Korean Patent Application No. 95-5128 discloses waste pulp discharged from paper mills, which have a lot of porosity among industrial wastes, ash discharged after combustion from factories or power plants, bark discharged from ash mills and timber dumps, and construction demolition. Schiropol, waste urethane foam, etc. generated during dismantling of refrigerators or refrigerators are shredded or condensed to 3-15mm and treated with coating materials or water repellents on the surface, and then mixed in a known urethane foaming process. It also suggests recycled foams that extend to artificial trees.

In addition, Korean Patent Application No. 96-11337 discloses an industrial waste soil sludge containing a large amount of various minerals and a predetermined portion of so-called expandable inorganic compounds such as pottery, fluorite, feldspar, and then, in a range of about 1050-1350 ° C. The range of the above recyclable waste and the range of use of recycling are presented by presenting a composition solid which is difficult to recycle and has good elasticity on the outer surface of the plate which has been calcined and foamed to produce a lightweight composition plate, and then cooled slowly to a temperature of about 100 ° C. Is expanding a bit more. In other words, the range of wastes that can be recycled is being expanded to industrial wastes and expandable inorganic compounds, and the range of applications for recycling has also been extended from basic materials for civil engineering to various building materials such as ceiling plates, interior and exterior materials, roofing materials and tiles. In the above method, the higher the temperature, the more the foreign matter burns out, and the fire resistance, light weight, strength, heat insulation, etc. are improved, and the range of recycling is expanded, but the temperature is limited to 1350 ° C. or lower in chemicals such as epoxy resin. This is because when the foaming agent becomes a high temperature, its viscosity drops and the foaming effect greatly decreases. In general, in order to exhibit the efficacy of the existing chemical foam material, the temperature should be 800 ° C. or less, and it is very difficult to obtain a large amount of the light weight composition plate in the conventional 1050-1350 ° C. range. In addition, the conventional chemical foaming agent has a problem that is harmful to the human body, difficult to prevent fire, high unit cost, difficult to work process is an important factor limiting the scope of the use of recycling.

That is, as described above, the range of waste that can be recycled and the use of recycling are limited. Each waste has different physical properties and contains a large amount of foreign matter. This is due to the difficulty of mixing and processing. In other words, if the range of wastes that can be recycled by the above-described conventional method is wide, the range of uses that can be recycled is narrowed. On the contrary, when the wastes to be recycled are specified, the wastes can be extended to the range of uses according to the original properties of the wastes. Although there are technical limitations to expand both the range of waste that can be recycled and the range of recycling use of the waste together, there is still a significant amount of waste disposal. There was a problem that the groundbreaking waste treatment and recycling technology has not been developed.

Accordingly, the present invention has been made to solve the above problems, the object of the present invention is a variety of waste that can be recycled, and also produced is porous, its strength, fire resistance, light weight, heat insulation, sound absorption, decolorization, buffering It is to provide a method for producing an ultra-light porous inorganic composition that can be recycled in various industries because of excellent thermal insulation, cold insulation, and the like.

Another object of the present invention to provide an ultra-light porous inorganic composition that can be easily made as described above.

In order to achieve the above object, the present invention mixes the pulverized raw material obtained in the pulverizing process, the electric pulverizing process to crush the raw material into the size of 10-120 mesh and at the same time with the reagents of the diamond is based on the total weight of the raw material to be blended Press-pressing and molding process of press-pressing and molding at a pressure of 450-1200 mmHg obtained from the mixing and mixing of the raw materials and the addition of reagents, and the electrolytic mixing and the addition of reagents at 2-7%. It is characterized by a composition which is harmless to the human body and has high strength because it is porous and ultra-light inorganic material by including a firing process of firing the press-molded product obtained in the press-pressing and molding process at a temperature of 1000-1300 ° C. in a kiln.

1 is a block diagram showing a manufacturing process of the present invention.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a manufacturing process of the present invention, as shown in the manufacturing method of the composition of the present invention is a grinding process of raw materials, blending and blending of the raw materials, the press-pressing, molding process, the firing process It is made to include.

Process Ⅰ

Crushing process of raw materials

Raw materials that can be used in the present invention may be solidified such as loess, vermiculite, sawdust, kaolin, silica, fluorite, clay, diatomaceous earth, feldspar, mica, etc. in addition to various wastes such as marble, tile, organic waste, construction waste, and thermal power plant combustion materials. It includes what is there. Since the raw materials are irregular in size, they are ground to a size of 10-120 mesh using a general mill. When the composition according to the present invention is to be used as a lightweight aggregate, the particles do not need to be fine, so there is no need to grind too finely.

Process II

Blending raw materials and sample input process

Among the various pulverized raw materials obtained in the above process I, appropriate raw materials are selected and blended in an appropriate ratio according to the intended use. Depending on the material of the product to be made at the same time as the formulation, it is usually formulated with 2-7% of the total weight of the ingredients to be formulated. The formulation is well formulated using a general formulator so that the above-mentioned raw materials and reagents are evenly distributed. Since the reagent is a diamond, it is harmless, inorganic, and soluble only at high temperatures, unlike conventional chemical blowing agents. The reagent serves as a major factor in making the product lighter by increasing the pores of the product in the firing process described later. If the reagent is added below 2%, the reagent does not normally react except for a slight reaction when the temperature of the raw material and the sintering process described below is very high. On the contrary, if more than 7% of the reagent is added, the final product does not solidify and becomes a liquid. If less compounding is needed depending on the intended use, less reagent may be added and the firing temperature described later may be increased.

In general, the sample is added more in the case of a large amount of silicon dioxide (SiO ₂ ) in the waste, less in the case of a large amount of limestone.

Process III

Press Pressing and Molding Process

After mixing the reagents obtained in the above-mentioned step II into a mold for molding, pressurize and mold at a high pressure of 450 to 1200 mmHg using a hydraulic molding press.

Molding mold is used according to the desired product.

The pressure during pressurization and molding varies depending on the strength required for the purpose of recycling, but when it is used for a building material that requires a great strength, it is molded at high pressure and the strength such as insulation is not required. If not, mold at low pressure.

Process IV

Firing process

The pressurized and molded product according to the above process III was calcined at 1000 to 1300 ° C. for 5-10 hours in a kiln to finally prepare a desired composition. The firing time is long at low temperatures and short at high temperatures. When the firing time exceeds 10 hours, it becomes similar to the state before firing. The larger the firing temperature, the larger the pore size, and thus the lighter weight, better thermal insulation, etc., but slightly less strength. The volume increased in the firing process is about 1-5 times that of raw materials. However, when it exceeds 1300 ℃ the total volume is reduced rather than the case where the reagent exceeds 7% by weight. That is, by adjusting the temperature of the firing and the amount of the above-mentioned reagent is mutually determined, the number of pores of the composition, the volume of the pores, the light weight, the heat insulating property, and the like are determined depending on the intended use.

Since the temperature of the calcination process is at least 1000 ° C., the substances harmful to the human body are oxidized due to the high temperature, and thus, the composition of the present invention, which is finally made, is inorganic and harmless to the human body, and has heat resistant refractory properties. Thus, unlike the conventional method, it can be made into high temperature and high pressure because the reagent of this invention can fully exhibit foaming effect even at high temperature and high pressure as a diamond. That is, the conventional recyclable material is limited because the material contained in the material and the properties according to the material are still unnecessary in the product and the properties according to the material. However, according to the present invention, since the bonding between the materials remaining in the material under high temperature and high pressure may be changed due to high temperature and high pressure, the final product may be easily lightweight, porous, inorganic, and harmless to the human body. Will be. In addition to the above-described common characteristics, the characteristics of the reagents may be adjusted so that the characteristics may be slightly changed to suit the intended use of recycling within a certain range through the adjustment of the reagent input amount, the control of the firing temperature, and the mutual adjustment of the reagent input amount and the firing temperature. Will be.

Thus, such reagents can extend the range of conventional recyclable materials and the range of recyclable uses.

The present invention will be described in more detail with reference to the following Examples. The following examples are not to be construed as limiting the scope of the invention, but of course, ordinary changes are possible by those skilled in the art within the scope of the invention.

Example 1

Production Example

Ocher and kaolin were crushed to a size of 20 mesh, respectively. The pulverized ocher and kaolin were added in a ratio of 6: 4, and 5% by weight of diamond was added thereto, and the mixture was well mixed by a blender. The compounded product was put in a molding plate and pressurized and molded at a high pressure of 1100 mmHg using a hydraulic molding press. The pressurized and molded product was moved to a firing furnace through a roller, and then fired at 1000 ° C. for 6 hours.

The ultra-light porous inorganic plate prepared as described above was manufactured by adjusting pressure, reagent ratio, firing temperature, and firing time so that its strength was large, and was used as a building material.

Example 2

Production Example

Marbles were ground to 10 mesh size each. 7% by weight of calcanite was added to the total weight of the crushed marble and mixed well by a blender. The compounded product was put in a molding plate and pressurized and molded at a pressure of 500 mmHg using a hydraulic molding press. The pressurized and molded product was moved to a firing furnace through a roller, and then fired at 1200 ° C. for 9 hours.

The ultralight inorganic plate prepared as described above was manufactured by adjusting the pressure, reagent ratio, firing temperature, and firing time so as to be very porous, and used as a heat insulating material, a soundproofing material, and a sound absorbing material.

Example 3

Production Example

The sand was crushed to a size of 10 mesh each. Diamond was added in 7% by weight of the total weight of the crushed sand was mixed well by a blender. The compounded product was put in a molding plate and pressurized and molded at a high pressure of 1200 mmHg using a hydraulic molding press. The pressurized and molded product was moved to a firing furnace through a roller, and then fired at a temperature of 1300 ° C. for 8 hours.

The ultra-light inorganic plate prepared as described above was manufactured by adjusting pressure, reagent ratio, firing temperature, and firing time so that its fire resistance was large.

Experimental Example

The results of experimenting with the physical properties of the above-described compositions prepared by the present inventors and other inventors are as follows. (Experiment by KSF method)

Form: Lightweight, porous hollow form with pore size of 0.1-4 mm

· Strength: High density and strong sintering at high temperature, so it is strong in compressive strength.

Fire resistance: Since the composition of the present invention has pores formed at a high temperature (for example, 1250 ° C.), it is excellent in fire resistance and can be maintained even at a high temperature.

Light weight: It consists of small pores of 0.1-4 mm in size with micropores in the composition, which is about 1/10 of the weight of sand.

· Thermal insulation: It is excellent in latent heat retention due to the pores inside the composition, preventing heat loss and blocking heat transfer.

-Sound absorption rate, sound insulation rate: It is porous and the pore distribution of the composition is uniform, but the size of each pore is irregular, so that the surface of the composition is very irregular, which shows excellent sound absorption rate and sound insulation rate by diffusely reflecting the incoming sound.

· Condensation prevention: It is excellent in preventing dew condensation due to excellent heat insulation and countless porous pores.

· Economical: As it is a super lightweight material, it greatly reduces weight and is economical by saving energy.

The results of experimenting with the physical properties and chemical components of the composition of the present invention described above are as follows.

Result Table of Physical Properties and Chemical Composition of the Invention division Contents Measurement result Remarks Physical aptitude Volume Specific gravity Internal porosity Thermal conductivity Absorption rate Absorption rate Melting point Strength 0.8-1 kg / L50-60% 0.03-0.04 kcal / mh ° C0.25-0.5% 80-95% 1250 ° C or more 8-10 kg / ㎠ Measurement time: 24 hours Chemical composition SiO₂AlO₃FeO₃CaOMgONaOKO 72-7611-161-21-20.5-12-42-4 Weight ratio (Wt%)

From the above results, the composition prepared by the present invention can be seen that the pore size is irregular, but the pore distribution is harmless to the human body because of its ultra-porous mineral with a constant porosity and high strength.

As described above, the manufacturing method of the ultra-light porous inorganic composition of the present invention mixes the pulverized raw material obtained in the pulverization process, the electric pulverization process to crush the raw material to 10-120 mesh size and at the same time as the above formulated reagent Press press-molding and molding at a pressure of 450-1200 mmHg to obtain what is obtained in the mixing and mixing of the raw materials and the addition of reagents, the mixing of the electro-crushed raw materials and the addition of reagents at 2-7% of the total weight of the raw materials to be blended. A raw material that can be recycled as compared to the conventional waste recycling technology, comprising a firing process of firing the pressurized and molded product obtained in the pressurizing and molding process and the electric press pressurizing and molding process at a temperature of 1000-1300 ° C. in a kiln. There is no difficulty in purchasing raw materials, and since there are already pores in the recycling process, no drying process is necessary. And so on, and the process is simple, and has no harmful effect on the human body. Furthermore, the use of the composition according to the present invention has a greatly expanded effect as follows when compared to the prior art.

Examples of the main purpose for which the ultralight porous inorganic composition of the present invention is used include the following cases.

Ultra-light and high compressive strength, it is used for cement-based products such as lightweight concrete products such as bricks, walls, blocks, lightweight mortar aggregates, lightweight sandwich panels, and anti-condensation mortar.

· As the compressive strength is high, it is used as a lightweight exterior material such as tiles by reducing reagents, lowering the firing temperature, reducing the pore size, and polishing the surface of the composition.

Because of its porosity and irregular pore size, it is used as sound-absorbing material or sound-proofing material such as lightweight soundproof clothing.

As it is a composition made at high temperature of 1000 ℃ or higher, it is used as fire-resistant products such as fire-resistant brick,

As there are many pores, the entire pore volume is not good for heat transfer, so it is used as a substitute for styropol such as insulation, thermal insulation, and insulator.

As it is porous, it is used as a shock absorber and noise absorber when subjected to significant pressure such as an airplane runway.

· As it is porous, it is used as a microbial house in the ocean,

Existing bleaching materials, such as jeans, used to crush volcanic ash, etc., but it is expensive, and sinks when water is consumed, and the strength is low, so many wastes are generated when crushing, whereas the composition of the present invention is inexpensive and the strength can be controlled. Used as a bleaching material,

Ultra-lightweight with low specific gravity, used for buoyancy materials.

In addition to the various uses of recycling described above, the composition of the present invention does not become a waste after using it, but can be used again by repeating the above-described process of the present invention again or using the composition or mixed with a general cement. It does not have an environmentally friendly effect.

Claims (3)

A grinding step of grinding the raw material to a size of 10-120 mesh; A step of blending and injecting a pulverized raw material into which the pulverized raw material obtained in the electric pulverizing step is blended, and at the same time as the blending, a reagent which is made of diamond is added at 2-7% to the total weight of the raw material to be blended; Press press and molding process of press-pressing and shaping | molding what was obtained in the mixing | blending process of the electric grinding | pulverization raw material, and the reagent addition process at the pressure of 450-1200 mmHg; A method for producing an ultralight porous inorganic composition comprising a firing step of firing a pressurized and molded product obtained in an electric press pressurization and molding process at a temperature of 1000-1300 ° C. in a kiln. The method of claim 1, wherein the firing process is performed for 5-10 hours. A grinding step of grinding the raw material to a size of 10-120 mesh; A step of blending and injecting a pulverized raw material into which the pulverized raw material obtained in the electric pulverizing step is blended, and at the same time as the blending, a reagent which is made of diamond is added at 2-7% to the total weight of the raw material to be blended; Press press and molding process of press-pressing and shaping | molding what was obtained in the mixing | blending process of the electric grinding | pulverization raw material, and the reagent addition process at the pressure of 450-1200 mmHg; An ultralight porous inorganic composition prepared according to a method for producing an ultralight porous inorganic composition comprising a firing step of firing a pressurized and molded product obtained in an electric press pressurizing and molding process at a temperature of 1000-1300 ° C. in a kiln.