KR101182605B1 - A wrapping apparatus and the use method using phosphogypsum and flyash - Google Patents

Abstract

This company recycles industrial byproducts such as phosphate gypsum and fly ash as useful resources, and uniformly mixes calcined ocher, biotite, fine aggregate, zeolite, oyster shell and hardening accelerator in the mixing ratio that shows optimum physical properties. By increasing the bonding strength of the packaging material to ensure a constant compressive strength and flexural strength, and to improve the sliding resistance and resistance to freeze-thawing to a packaging composition.
The present invention recycles industrial by-product phosphate gypsum and fly ash as a useful resource to secure a constant compressive strength and flexural strength, to improve the sliding resistance and to increase the resistance to freeze-thawing, the phosphate gypsum 20-37 10-25 wt% of calcined ocher and 10-15 wt% of zeolite in the mixture obtained by neutralization by mixing the weight%, 15-25 wt% of fly ash, 10-15 wt% of biotite, and 3-8 wt% of oyster shell powder. Compressive strength (N / m²) ranges from 23.5 to 26.5, flexural strength (MPa) ranges from 5.3 to 5.5, and slip resistance BPN) 75, resistance to freeze-thawing (%) 92, and a permeability coefficient (cm / sec) of 4.5 × 10 ^-3 .

Description

A packaging apparatus and the use method using phosphogypsum and flyash}

The present invention is to provide a bicycle road or walkway pavement composition by mixing the industrial by-products with the raw materials used for the gypsum phosphate and fly ash, more specifically, the recycling and firing of phosphate gypsum and fly ash as industrial by-products It is an invention to make a bicycle road or promenade pavement to maintain a certain strength as a pavement composition provided by uniformly mixing the loess, biotite, fine aggregate, zeolite, oyster shell powder, hardening accelerator in the mixing ratio showing the optimum physical properties.

Phosphogypsum (PG), which is produced during the production of phosphoric acid in fertilizer plants, is a strong acidic substance, and domestically produced phosphate gypsum is emitted about 2.35 million tons per year. Except for about 50% of the unused situation, most of them are stored in the yard, which is about 30 million tons in the gypsum storage site and the storage place is narrow and is already saturated.

In addition, the main components of fly ash separated into particulates collected by dust collector of pulverized coal combustion boiler among the coal ashes generated by burning coal in domestic thermal power plants are SiO ₂ , Al ₂ O _3. As a glassy and alkaline particulate material, most fly ashes have been classified as wastes in the past and have been just landfilled, but they have been actively researched for various uses and are used as cement substitutes.

The present application recycles the industrial by-products such as phosphate gypsum and fly ash as a useful resource to be used as a packaging material composition, mixed with calcined ocher, biotite, fine aggregate, zeolite, oyster shell, hardening accelerator, uniform mixing ratio showing the optimal physical properties It is an invention to provide a packaging composition that ensures a constant compressive strength and flexural strength by increasing the mixing, increase the sliding resistance and increase the resistance to freeze-thawing.

Recently, a lot of researches have been conducted to provide a nature-friendly bicycle road as a means of encouraging bicycle riding, which has emerged as an eco-friendly green transportation method. As an alternative means, a number of methods have been proposed to mix the soil and soil hardener composition together to maintain a certain level of strength. Conventional soil hardeners are used by mixing cement or lime with a polymeric dispersant such as acrylic or urethane. It is generalized and applied.

Patent application No. 1013035 is a registered patent application of the present application, which does not use cement, removes environmental pollution factors in advance, and provides nature-friendly bicycle paths or trails using bentonite, zeolite, magnesium oxide, ocher and feldspar aggregates. Has patented the technology to be applied to the packaging material industry.

In addition, the inventors of the present invention have also conducted a lot of research on the bicycle road, and during the process, using the loess as the main raw material without using a chemical binder in the bicycle roadway pavement composition disclosed in the Patent Publication No. 0125801 20 to 60 parts by weight of feldspar aggregate, 20 to 60 parts by weight of inorganic hardener, 1 to 5 parts by weight of fiber reinforcement, 0.1 to 5 parts by weight of natural water repellent material, and 30 to 40 parts by weight of water The bicycle-only road provided by mixing has been used as a composition.

In addition, a considerable amount of research has been conducted in the field of recycling phosphate gypsum. In Patent No. 101684, phosphate gypsum, a by-product of fertilizer production, is used as dolomite, zeolite, and Mg-zeolite. A technique for providing a soil improving agent by selectively blending auxiliary ingredients, such as pH-regulating neutralizing agents and stabilizing agents, such as (Mg-zeolite) and phyllite in an appropriate ratio, is disclosed.

In addition, Korean Patent Publication No. 2002, No. 96785 discloses an artificial aggregate manufactured by using phosphate gypsum generated from a phosphate fertilizer plant. The road base material is formed by mixing a predetermined amount of coal ash, slag, and cement with phosphate gypsum. , Artificial aggregates that can be used for the fill, and various concrete secondary products are disclosed.

However, such a prior art has a situation that the practical use of phosphate gypsum is not much, and its utilization is low, and mixed components other than phosphate gypsum are absorbed into the soil for a short period of time.

In addition, the present invention discloses an ocher road pavement material and a method of manufacturing the same. As a means to provide a road pavement material that has high compressive strength and maintains natural yellow earth color, high purity ocher powder in which ocher particles are finely and uniformly processed is mixed with cement, and cement and optimum strength are used depending on the purpose of the road. There is disclosed a technology having the technical idea of combining ocher at a sustainable ratio and adding iron oxide as a color enhancer to compensate for the graying of the ocher mixed soil due to an increase in the amount of cement. .

As another prior art, the technology of Publication No. 2005-62858 discloses a technology for an environmentally friendly porous polymer concrete block that can be assembled and installed on the sidewalks, bicycle roads and park plazas of roads, but in the limestone processing Disclosed is a technique for maintaining high strength and ensuring permeability and durability without using sand, which is fine aggregate, by using waste lime powder as a by-product.

The prior art to provide a loess road disclosed in the prior art as described above is based on the constitutional idea to obtain the loess road by combining with the contaminated aggregate and cement at the same time to partially use the loess, fertilizer herein Recycling phosphate gypsum and fly ash generated from thermal power plants as useful resources in the production process as useful resources, and adding calcined ocher, biotite, fine aggregates, zeolites, oyster shells, and curing accelerators to secure the properties of the optimal packaging composition. It is mixed in the mixing ratio, and it causes the pozzolanic reaction of phosphate gypsum and fly ash to increase the bonding strength of the packaging material to secure a certain range of compressive strength and flexural strength, to improve sliding resistance, resistance to freeze-thawing, and a certain range of particle size Due to mixing with calcined ocher and zeolite The side gap empty space and packaging material of the present composition for absorbing moisture management and contaminants has an essential difference.

This company recycles industrial byproducts such as phosphate gypsum and fly ash as useful resources, and uniformly mixes calcined ocher, biotite, fine aggregate, zeolite, oyster shell and hardening accelerator in the mixing ratio that shows optimum physical properties. By increasing the bonding strength of the packaging material to ensure a constant compressive strength and flexural strength to increase the sliding resistance and the resistance to freeze-thawing to provide a packaging composition.

In the present application, as a means for achieving the above object, industrial by-product gypsum phosphate and fly ash is recycled as a useful resource to be used as a packaging material composition, mixed with calcined ocher, biotite, fine aggregate, geolite, oyster shell, hardening accelerator It is an invention of the technical concept to uniformly mix in the mixing ratio showing the physical properties of the to secure a constant compressive strength and flexural strength, to improve the sliding resistance and to increase the resistance to freeze-thawing.

This application is a compounding composition for showing physical properties over a certain range, 20-37% by weight of acidic gypsum phosphate, 15-25% by weight of alkaline fly ash and 10-15% by weight of biotite, 3-8% by weight of alkaline oyster shell powder Pretreatment step of performing a neutralization reaction to cause a pozzolanic reaction by mixing first, 10-25% by weight of calcined ocher, 10-15% by weight of zeolite and 10-15% by weight of fine aggregate, curing accelerator in the mixture obtained in the pretreatment step Through the process of mixing and stirring 5-10% by weight, the first step of preparing the laying work by uniformly mixing the packaging material composition, and ensuring the width of the road according to the design specifications for forming a bicycle road or promenade, and the boundary stone on both sides The second step of laying a surface layer in the range of 3 ~ 10 cm on the basis of the road surface and laying the crushed stone having a particle size of 3 ~ 10 mm on the base surface to a thickness of 5 ~ 20 cm and compacting the surface and spraying water; 2nd The paving composition prepared in the first step is laid in the range of 5 ~ 15 cm to the upper part where the base surface is compacted through the system to form the road surface layer, and the horizontal work is performed evenly while maintaining the level so that water does not accumulate in the central part or one side. By confirming that the object of the present application can be achieved through a process including a fourth step of covering the moisture vapor barrier layer on the road surface layer prepared through the third step and the third step to prevent moisture evaporation and drying / curing. It is a completed invention.

In the experiment for providing a packaging composition of the present application phosphate gypsum was applied using the phosphate gypsum provided by the domestic NH chemicals, the physical properties of the phosphate gypsum provided by analysis in the NH chemical analysis room was as shown in Table 1 below.

Table of Compositions of Phosphate Gypsum ingredient  Content (wt%)  Remarks CaSO ₄ -2H ₂ O  93 and above


Dry base

SiO ₂  2.3 to 4.5 Al ₂ O ₃  0.7 to 1.6 Fe ₂ O ₃  0.07-1.6  CaO  28-30 SO ₃  43-44  pH  2.5 to 5.5 Free Phosphoric Acid and Sulfuric Acid Effects in Fertilizer Manufacturing Process
 Free acid  0.07-0.21  Arsenic  1 to 18  50 or less  25 or less  cadmium  2 or less  5 or less  2.5 or less  Mercury  1 or less  2 or less  1 or less  lead  10 to 40  150 or less  75 or less  chrome  5 or less  300 or less  150 or less  Copper  5 or less  300 or less  200 or less  moisture  11 to 19%  50% less than  45% less than  Reference  -  Compost Standard Green Compost Standard

In order to neutralize the high acidity of the phosphate gypsum raw material as described above, the fly ash, which is a coal ash generated during the combustion process in a thermal power plant, is made of SiO ₂ , Al ₂ O _{3 ,} Fe ₂ O _3. It is intended to improve the long-term strength as a packaging material by mixing with alkaline materials such as pozzolanic reaction. In the present application, 20-37% by weight of phosphate gypsum, 15-25% by weight of fly ash and 10-15% by weight of biotite, alkaline materials The result of performing a pretreatment step of performing a neutralization reaction by first mixing 3-8% by weight of the oyster shell shell powder was preferable.

Compressive strength of a certain range through the process of mixing and stirring 10-25% by weight of calcined ocher, 10-15% by weight of zeolite, 10-15% by weight of aggregate, and 5-10% by weight of curing accelerator to the mixture obtained in the pretreatment process. And it can provide a packaging material to secure the flexural strength, increase the sliding resistance, increase the resistance to freeze-thawing, and secure the permeability coefficient.

Gypsum phosphate in the packaging composition of the present invention absorbs moisture in the air while being stored in a yard and exhibits a range of moisture content, causing the pozzolanic reaction to increase long-term strength by combining with water, which is the main component of fly ash. Biotite in the packaging composition of the scavenging to clean the pollutant through the adsorption action to provide a durable effect, the oyster shell powder has an alkalinity and the neutralization effect while the oyster shell small powder provides an antimicrobial effect to the packaging composition.

In addition, in the packaging material composition of the present invention, the calcined ocher provides a porous storage space by forming a honeycomb structure, and controls the condition of the packaging composition by controlling the appropriate humidity and releases far-infrared rays from the ocher component after site construction, thereby deciphering, absorbing and self-cleaning force. It provides the effect of providing a package to increase the, and when the zeolite is mixed in the packaging composition of the present application to promote the pozzolanic reaction action to provide a high strength binding force, fine aggregate provides the effect of securing the permeability to a certain particle size standard In addition, BPO (Benzoyl Peroxide), which is used as a curing accelerator, acts as a catalyst for the bonding reaction between packaging compositions, thereby providing an effect of inducing rapid bonding force.

The present inventors first mix the phosphate gypsum and fly ash, biotite, oyster shell powder to perform the pozzolanic reaction and neutralization, and fine aggregates and hardened granules in the range of calcined ocher and geolite, particle size of 10 ~ 20 mm in the mixture obtained in the pretreatment process When BPO (Benzoyl Peroxide), which is a promoter, is secondarily mixed, moisture control function and adsorbed pollutants can be adsorbed into the hollow space of the ocher honeycomb structure to secure the permeability coefficient while releasing far infrared rays from the ocher component. Enhances the vibrancy, enhances the heat storage effect of the packaging material, controls the temperature rise and rise of the packaging material, enhances the durability of the packaging material, and provides an ocher-colored pavement from the visual point of view, creating a green forest and amenity for visual enjoyment. It is an invention of the technical idea that can provide the packaging material to provide.

The inventors assume that the package composition will provide a packing material that secures a certain range of compressive strength and flexural strength, improves sliding resistance, increases resistance to freeze-thawing, and secures permeability coefficient, and goes through numerous trial errors. was looking for a composition optimal formulation, then placing various experiments site paving work after about 30 days, the compressive strength provided by 23.5 ~ 26.5 N / ㎡ range and bending strength is also available in the range 5.3 ~ 5.5 MPa, permeability coefficient 4.5 × 10 ^-3 The present invention was completed by confirming that a packaging material having a physical property of cm / sec can be obtained.

In addition, the curing accelerator B.P.O used in the present application not only enhances the binding strength of the packaging material, but also has a hardening time of 10-30 minutes, thereby providing the effect of field construction at any temperature without being greatly influenced by seasonal changes in summer or winter.

This company recycles phosphate gypsum and fly ash as industrial useful resources by constructing road pavement material that maintains a certain strength by recycling phosphate gypsum and fly ash, which is difficult to process due to the lack of suitable use. Has the effect.

The pavement composition provided herein is provided as a permeable pavement, and as the pavement area such as roads rapidly increases due to the progress of urbanization and industrialization, the vegetation environment is deteriorated due to water infiltration into the ground, and flood damage occurs during heavy rains. In addition, it has an effect of solving the problem that people's living environment becomes poor due to urban heat island phenomenon.

1: Process example for obtaining the packaging composition of the present application.
2: Application example of the primary mixer applicable in the present application.
3: Application example of the secondary mixer applicable in the present application.
4 is an exemplary embodiment applied to a packaging work using the raw material composition provided herein.

Hereinafter, the embodiments of the present invention for implementing the technical spirit of the present application, which will be described by presenting the embodiments of the technical spirit of the present invention in the drawings, the terms or words used in the specification or claims of the present application is conventional or dictionary The scope of protection of the present application should be interpreted as meaning and concept corresponding to the technical idea of the present invention, and the contents presented in the drawings of the present application are intended to achieve the purpose of the present application. It is to be understood that there are various equivalents and modifications that can be substituted for them at the time of filing the present application as they are merely illustrative of the application examples and do not represent the technical spirit of the present application.

Hereinafter, exemplary embodiments of the present invention will be described in detail with the accompanying drawings.

1 shows an exemplary process for obtaining a packaging composition of the present application.

In order to easily explain the technical concept for obtaining the packaging composition of the present invention, the embodiment showing the use of the primary mixer and the secondary mixer separately. Firstly, the primary mixer includes 25 kg of phosphate gypsum, 20 kg of fly ash and 10 kg of biotite. And the oyster shell powder is mixed in the ratio of 5 kg range to perform the pozzolanic reaction and neutralization reaction, at which time the temperature can rise to 110 ~ 130 ℃ range by exothermic reaction in the mixer, the moisture generated at this time quickly It may be desirable to be applied as a method of carrying out the neutralization reaction while blowing high pressure air from the outside by the compressor to the inside of the mixer in order to remove and increase the reaction rate.

The mixture obtained through the primary mixer is introduced into the secondary mixer while forming 100 parts by weight of a mixture of 10 kg of calcined ocher and 15 kg of fine aggregates in the range of 10 to 20 mm, 10 kg of zeolite and 5 kg of a curing accelerator. Packaging materials compositions may be provided.

The composition is 20-37% by weight, 15-25% by fly ash, 10-25% by calcined ocher, 10-15% by biotite, 10-15% by weight aggregates, depending on the moisture content of gypsum phosphate It may be modified and applied to maintain the specified compressive strength and flexural strength in the range of 10-15% by weight, oyster shell 3-8% by weight, 5-10% by weight curing accelerator.

Figure 2 shows an application example of the first mixer 20 applicable to the present application, Figure 2a is a blower system so that the phosphate gypsum and fly ash and biotite, oyster shell powder, etc. in the primary mixer 20 to quickly perform the neutralization reaction Cross-sectional view is shown to show the central portion of the primary mixer that can react in this provided condition, Figure 2b is a perspective view of the internal structure by lifting the lid cap 22 of the primary mixer 20, The primary mixer 20 applied in one embodiment for implementing the technical concept of the lower main body 21 has a cap cap 22 to the top and the raw material inlet 23 is provided in the cap of the main body At the bottom of the end, the mixture outlet 24 is provided, and the stirring blade 26 is attached to the hollow hollow shaft 25 at the center of the primary mixer 20, so that the driving pulley of the motor 10 is provided. Follower pool connected to hollow center shaft 25 by 11 Lee 12 is rotated, provided in the middle of the hollow center shaft 25 and the stirring blade 26 has a structure having a small hole-shaped holes (25a, 26a) through which the wind passes, and in the blower (13) The blowing high pressure air is shown to be provided so that the high pressure air is supplied through the holes (25a, 26a) in the mixture inside the primary mixer to be accompanied with the moisture generated in the mixture.

Figure 3 shows an application example of the secondary mixer 30 applicable here, Figure 3a shows a perspective view of the secondary mixer 30, Figure 3b shows the internal structure of the secondary mixer 30 As shown in the cross-sectional view, the secondary mixer 30, which is applied as an embodiment for implementing the technical concept of the present invention has an upper cap 32 in the form of a lid to the upper lower body 31 of the lower and the upper cap The raw material inlet part 33 is provided, and the mixture discharge part 34 is provided at the lower end of the main body, and the stirring blade 37 and the stirring blade 37 and the central axis 35 are located at the center of the secondary mixer 30. An embodiment is shown which is connected by a connecting bar 36 for attachment and rotated by a motor 10.

Figure 4 is provided 20-37% by weight gypsum, fly ash 15-25% by weight, calcined ocher 10-25% by weight, biotite 10-15% by weight, fine aggregate 10-15% by weight, geolite 10-15 A raw material composition containing weight%, oyster shell 3-8 weight%, and curing accelerator 5-10 weight% is used, and the mixed composition is used to actually test the applicability of the packaging work, and the compressive strength, bending strength, slip resistance, and freeze thawing In order to perform resistance, permeability coefficient, etc., the construction of FIGS. 4A to 4D was carried out.

Figure 4a is a rubble compacted to a thickness of about 200 mm by using a rubble in the range of about 25 ~ 45 mm in the lower roads, such as trails, and using the pavement mixture composition of the present application to about 70 mm thick Figure 4b shows the application of the installation site, Figure 4b is to install the road boundary stone on the road dedicated to the bicycle, and to lay the road boundary stone with the support mortar under the road boundary stone, and rubble about 200 mm on the floor An embodiment where the site was laid using the pavement mix composition of the present application about 70 mm thick at the top, and FIG. 4C shows rubble compaction at about 200 mm at the bottom when the road boundary stone is not installed on a general road. On-site laying using the packaging material mixture composition of the present application about 70 ㎜ thick to the top, and about 100 instead of the boundary stone Figure 4d shows an embodiment in which an interface is formed using the pavement mixture composition of the present application to a thickness of about mm, and FIG. 4d is an application of using a tension reinforcement using a wire mesh or the like when forming a general road using the pavement composition of the present application. By way of example, the embodiment is subjected to rubble compaction by about 200 mm at the bottom, wire mesh on the top thereof, and field installation using the packaging material composition of the present application at about 70 mm thick.

Table 2 shows the results of comparing the properties of the general cement pavement with the average of the results of measuring the physical properties of each pavement material 30 days after the pavement construction applied to the embodiment of Figures 4a to 4b of the present application as an average.

[Table 2] Property test results

division Packing Cement paving Compressive strength (N / ㎡) 23.5-26.5 28 or more Flexural strength (MPa) 5.3-5.5 Slip Resistance (BPN) 75 45 or more % Resistance to freezing and thawing 92 80 or more Permeability coefficient (cm / sec) 4.5 × 10 ^-3 Almost none

From the above results, the package of the present invention exhibits a packing compressive strength (N / m 2) in the range of 23.5 to 26.5, a flexural strength (MPa) in the range of 5.3 to 5.5, a slip resistance (BPN) of 75, and resistance to freeze-thawing (%). ), And a permeability coefficient (cm / sec) of 4.5 × 10 ^-3 was confirmed. (Permeability measurement method was measured by applying the method of KSF 2494-2007).

10 motor 11: drive pulley
12: driven pulley 13: blower
20: 1st mixer 21: main body
22: cap cap 23: raw material inlet
24: mixture outlet 25: hollow center shaft
26: stirring blade 30: secondary mixer
31: lower body 32: upper cap
33: raw material input part 34: mixture discharge part
35: center axis 36: connecting bar
37: stirring blade

Claims (4)

In the packaging material composition to achieve a nature-friendly bicycle road and the promenade,
Gypsum 20-37% by weight, fly ash 15-25% by weight, calcined ocher 10-25% by weight, biotite 10-15% by weight, fine aggregate 10-15% by weight, zeolite 10-15% by weight, oyster shell 3-8 Wt%, BPO (Benzoyl Peroxide) as a curing accelerator is used in the packaging composition, characterized in that used in the range of 5-10% by weight. delete In the manufacturing method of the packaging material composition provided to have a certain strength using phosphate gypsum and fly ash,
A first step of performing neutralization by first mixing 20-37% by weight of phosphate gypsum, 15-25% by weight of fly ash, 10-15% by weight of biotite, and 3-8% by weight of oyster shell powder;
10-25 wt% calcined ocher, 10-15 wt% zeolite, 10-15 wt% fine aggregate, and 5-10 wt% Benzoyl peroxide (BPO) as a curing accelerator to the mixture obtained through the first step process. Step 2;
Method for producing a packaging material composition characterized in that it comprises a. In the construction method of the paving material for providing a bicycle path and a promenade,
20-37% by weight of gypsum phosphate, 15-25% by weight of fly ash, 10-15% by weight of biotite, and 3-8% by weight of oyster shell powder were first mixed with the packaging material. The packaging composition is uniformly mixed by mixing and stirring 10-25 wt% of calcined ocher, 10-15 wt% of zeolite, 10-15 wt% of fine aggregate, and 5-10 wt% of a curing accelerator. A first step of preparing;
Secure the width of the road according to the design specifications for the bicycle road or the promenade, and set up the boundary stones on both sides, and leave the road layer in the range of 3 ~ 10 ㎝ on the upper side of the road surface and the size of the stones of 3 ~ 10 mm particle size on the base surface. Second step of laying down to 5 ~ 20 ㎝ thickness to compact the surface and water;
Through the second step, the base composition is laid to form a road layer by laying the packaging composition prepared in the first step in the range of 5 to 15 cm in thickness, and horizontally maintaining the level so that water does not accumulate toward the central part or one side. Performing a third step;
A fourth step of covering the moisture evaporation barrier layer on the road surface layer prepared through the third step to prevent moisture evaporation, drying and curing;
Bicycle road or walkway construction method comprising the.

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