KR20160015346A - Method of Producing Substitute for Ground Material of Base Course from Waste Adsorbents - Google Patents

Abstract

The present invention relates to a method for manufacturing a basic floor ground material or a substitute of a basic floor ground material using a waste adsorbent. More specifically, the present invention relates a method for manufacturing a basic floor ground material using a waste adsorbent to manufacture an eco-friendly basic floor ground material with excellent water permeability by adding a water aggregate to an aggregate to be recycled including a waste adsorbent. The method for manufacturing a basic floor ground material comprises the following steps: inserting, grinding, and selecting an aggregate to be recycled, a waste adsorbent, and a general wash aggregate; controlling a particle size of the selected material; inserting a solidifying agent into the particle size controlled material to perform a primarily mixing process on the mixture ; secondarily selecting the mixed material; and secondarily mixing the secondarily selected material by inserting a counteractive agent thereto. The recycled aggregate includes: waste foundry sand, slag, and ceramic pieces. The waste adsorbent includes anthracite, and silica sand.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a ground-

The present invention relates to a method for producing a base material or a donated ground substitute using waste absorbent materials generated in various production plants or workplaces, and more specifically, to a recycled aggregate containing a waste adsorbent material, The present invention relates to a method for producing a base material using a waste adsorbent for the production of an excellent base layer material.

Generally, the layer is located on the upper layer of the asphalt pavement, and has the function of uniformly transferring the load acting on the surface layer to the bedrock. The base layer material is a material for forming such a base layer, and in general, an assembly layer or an asphalt mixture can be used. An auxiliary layer is formed on the hearth or bedrock for the civil engineering work, and the base layer can be formed on the auxiliary layer, and the base layer material such as bus lime (dreg), ascon, waste ascon or waste concrete is used.

Background Art [0002] Prior art related to a base material is disclosed in Korean Patent Publication No. 2005-0028148, " Base material for a playground. &Quot; The prior art is a base material having a blast furnace for drainage of groundwater and infiltration water, an in-phase prevention layer for preventing the ground of the athletic field from freezing in winter, and a gravel assistant layer provided on the top surface of the in- And a base layer structure having a buffer layer and a drain layer provided on an upper surface of the auxiliary base layer.

Another prior art related to the base material is Patent Registration No. 0710514, 'A method of screening recycled aggregate for roadside support layer, and a roadside support material using recycled aggregate therefrom'. The prior art discloses road-assisted bedding materials recycled from waste-concrete, combustible waste, recycled aggregates, inorganic sludge sludge, waste-foundry sand and sludge sludge.

The base layer material should be suitable to meet the specified criteria of compressive strength, permeability and salt content, while it may contain, for example, lead (Pb), copper (Cu), arsenic (As), mercury (Hg), cadmium (Cd) Should not contain harmful substances such as. Also, it is advantageous that the material used as the base layer material should be free from depletion, reproducible, and produced at low cost.

The above prior art does not disclose a base layer material or base layer substitute material having such a condition.

The present invention has been made to solve the problems of the prior art and has the following purpose.

Prior Art 1: Open Patent No. 10-2005-0028148 (published by Antuca Co., Ltd., March 22, 2005) Prior Art 2: Registered Patent No. 0710514 (Inkwang Environment Co., Ltd., published on April 16, 2007) A method of sorting recycled aggregate for a roadside support layer and a roadside auxiliary layer material

It is an object of the present invention to provide a method for manufacturing a base layer material using an environmentally friendly waste adsorbent material that conforms to a standard value.

According to a preferred embodiment of the present invention, a method for manufacturing a base layer material using a waste adsorbent includes: grinding and selecting a recycled aggregate, a waste adsorbent, and a general washing yarn; Adjusting a particle size of the selected material; Subjecting the material having the controlled particle size to a primary kneading while adding a solidifying agent thereto; A step of secondarily selecting the kneaded material; And subjecting the second sorted material to a secondary kneading while injecting a neutralizing agent, wherein the recycled aggregate includes waste sand, slag, and porcelain drift, and the waste sorbent includes anthracite and filter yarn.

According to another preferred embodiment of the present invention, the solidifying agent comprises fly ash, lime and alumina.

According to another preferred embodiment of the present invention, the crushing and sorting step further comprises separating the materials having different diameters separately and crushing them by hammer crushing or impact crushing according to their diameters.

The product manufactured by the manufacturing method according to the present invention can be used as a base material or a base material so that natural damage due to the mining of sand can be prevented. The manufacturing method according to the present invention has an advantage of improving the regeneration efficiency of resources while preventing environmental pollution by using waste. Also, the ground material according to the manufacturing method according to the present invention is characterized in strengthening the foundation, thereby reducing the cost and improving the stability of civil works. Further, the manufacturing method according to the present invention has an advantage of being environmentally friendly by preventing environmental pollutants from being emitted.

FIG. 1 schematically shows an embodiment of a manufacturing process of a base layer material according to the present invention.
FIG. 2 is a view showing an embodiment of a process in which the waste adsorbent and the recycled aggregate are made of recycled aggregate in the manufacturing method according to the present invention.
FIG. 3 shows an embodiment of a process for producing a base layer material from recycled aggregate produced according to FIG. 2 in the manufacturing method according to the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings, but the present invention is not limited thereto. In the following description, components having the same reference numerals in different drawings have similar functions, so that they will not be described repeatedly unless necessary for an understanding of the invention, and the known components will be briefly described or omitted. However, It should not be understood as being excluded from the embodiment of Fig.

FIG. 1 schematically shows an embodiment of a manufacturing process of a base layer material according to the present invention.

Referring to FIG. 1, the manufacturing process of the base material according to the present invention includes a step (S12) of grinding and sorting the recycled aggregate, the waste adsorbent and the general cleaner while charging them; Adjusting the particle size of the selected material (S13); A step (S14) of primary kneading while the solidifying agent is added to the material whose particle size is controlled; A step (S15) of secondarily sorting the kneaded material; And a step (S16) of performing secondary kneading while injecting a neutralizing agent into the secondary sorted material, wherein the recycled aggregate includes waste sand, slag and ceramics drift, and the waste sorbent includes anthracite and filter yarn .

The manufacturing method according to the present invention is to produce a base material by using a waste recycled aggregate and a common ground aggregate as auxiliary materials while using a waste adsorbent containing filter paper, anthracite and filtration sludge as waste materials, . Solidifying agents and neutralizing agents may be added during manufacture. The filter sand can be, for example, a sand-like waste having a diameter of 0.4 to 5 mm and the gravel can be, for example, a gravel-like workplace waste having a diameter of 5 to 30 mm . Anthracite can also be a particulate waste with a low carbon ash content and a low ash content. The waste sorbent material can be waste having various diameters generated in the workplace, and the present invention is not limited to the embodiments shown. The base layer base material produced by the manufacturing method according to the present invention has a harmless soil pollution degree while allowing vegetation. Also, it is possible to reinforce the assembling block assembly by forming a ground reinforcement layer having good water permeability. A method for producing a base layer material according to the present invention having such characteristics will be described in detail below.

The sorbent material including the waste refractory material may be supplied together with the recycled aggregate material and the general cleaning yarn through, for example, a hopper, a belt conveying device or a conveying conveyor (S111, S112, S113). The recycled aggregate may be, for example, a waste sand, slag or porcelain drift, and the general wash may be, for example, sand having a diameter of 0.08 mm or less. The waste sorbent material, the recycled aggregate material and the washing yarn may be supplied in a predetermined amount, for example, but not limited to, the weight ratio of the waste adsorbent material: recycled aggregate: washing yarn = 30:20 to 35:15 to 25.

During the transfer process, the iron component may be separated and stored separately and may be pulverized and sorted according to the diameter (S12). For example, a waste sorbent material containing a waste refractory may be treated to have a diameter of less than 8 mm and the recycled aggregate may be 2.5 mm. Such control of the particle diameter is intended for uniform mixing and hence stable compression strength.

The pulverized and sorted material may again be regulated in particle size (S13). The particle size control means, for example, the weight ratio according to each diameter. For example, from 15 to 25%, from 25 to 40%, from 40 to 65%, for example, the diameters of 6 to 8 mm, 4 to 6 mm, 2 to 4 mm, 1 to 2 mm, , 65 to 85% and 85 to 100%, respectively. Particle size control can be adjusted, for example, using a sieve with a certain mesh or through a grinding process. The particle size can be controlled in various ways and the present invention is not limited to the embodiments shown.

When the particle size is controlled, the primary kneading process can be performed while adding a solidifying agent (S14). The solidifying agent may be, for example, fly ash, lime or alumina (Al ₂ O ₃ ) and may be added in a weight ratio of 10 to 20% of the total material weight. The primary kneading step may be a low speed kneading step. A device such as, for example, a Kneader may be used for the low speed kneading process, and the kneader may mix the material while rotating at a speed of, for example, 5 to 20 RPM. Alternatively, the kneading process may proceed while being conveyed by a belt conveying device or a screw conveying device.

When the materials having different particle sizes are mixed and solidified by the kneading process, the secondary sorting process may proceed (S15). The secondary sorting process is for removing a material in the form of a lump or a crumb in the kneading process, for example, a mesh of a certain mesh may be applied. When the secondary sorting process is completed (S15), the secondary kneading process by adding the neutralizing agent can proceed (S16). The neutralizing agent may be, for example, magnesium or a pH adjusting agent and may comprise limestone, slaked lime, quicklime, carbide or mixtures thereof. The neutralizing agent may be added in an amount of 3 to 10% by weight based on the entire material. The secondary kneading step may be carried out by a device such as a kneader, for example, and the kneader may be rotated at a speed of 15 to 50 RPM. Alternatively, it can be kneaded while being conveyed by a conveyance belt or a screw. The neutralizing agent may be in the form of a liquid and may be added in such a way that the liquid phase is sprayed onto the material during the transfer. It can be kneaded in various ways and the present invention is not limited to the embodiments shown.

When the secondary kneading process is completed (S16), base layer ground material is produced (S17) and packed to a certain weight or stored in a storage warehouse. And the manufactured base layer material can be used, for example, as an interlocking of a sidewalk or a roadway.

Another embodiment of the manufacturing process according to the present invention will be described.

FIG. 2 is a view showing an embodiment of a process in which the waste adsorbent and the recycled aggregate are made of recycled aggregate in the manufacturing method according to the present invention.

Referring to FIG. 2, a recycled aggregate containing waste abatement material, waste refractory material, waste maggot, and ceramics drift can be supplied in a quantitative manner (S21). The quantitative supply means, for example, that the waste adsorbent material and the recycled aggregate are supplied through different supply paths in the amount shown above. The waste adsorbent material and the recycled aggregate can be transported through a belt conveying device, for example, and can be mixed with each other during transport (S22). The iron component can be removed from the mixed aggregate mixed with each other (S23). Removal of the iron component can proceed, for example, in an electromagnet de-ironing machine, and the removed iron component can be separately stored and regenerated (S231).

The mixed aggregate from which the iron component has been removed can be crushed to a predetermined size in a crusher or a crusher and can be crushed to have a diameter of 8 mm or less, for example. The pulverization may proceed in an apparatus such as, for example, a jaw crusher, and the pulverized aggregate may be conveyed through a conveying means such as a belt conveying apparatus (S24). A belt transfer device is used for separation of particles of different diameters during transfer. A bucket transfer device may be installed at the end of the belt transfer device (S25) and may be separated in accordance with the diameter of the mixed aggregate material passing through the first sorting device and the second sorting device in a tow way (S271, S271). For example, the mixed aggregate having a diameter of 2.5 mm or less and a diameter of 2.5 to 8 mm may be separated by the first sorting device and the second sorting device, respectively.

Separating the mixed aggregate so as to have different diameters is to apply different crushing methods depending on the diameter. For example, a mixed aggregate having a diameter of 2.5 mm or less may be hammer milled (S281), and a mixed aggregate having a diameter of 2.5 mm to 8 mm or more may be pulverized (S282). Hammer crushing refers to crushing while passing a hammer vibrating at a constant cycle, and impact crushing refers to applying the mixed aggregate to the crushing space and continuously applying impact to the crusher for a predetermined period of time. The pulverization according to the particle diameter of the mixed aggregate can be performed by various methods, and the present invention is not limited to the embodiments shown.

The mixed aggregate pulverized by different pulverizing methods is transported and sorted (S271, S272), and the above-described processes are repeated a number of times to produce recycled aggregates having required particle sizes. The recycled aggregate thus produced can be kneaded together with a general washing yarn to be made into a base layer.

FIG. 3 shows an embodiment of a process for producing a base layer material from recycled aggregate produced according to FIG. 2 in the manufacturing method according to the present invention.

3, the general washing yarn S311 and the recycled aggregate S312 produced according to the method of FIG. 2 are introduced at a ratio of recycled aggregate: washed yarn = 60: 15 to 25 in a weight ratio, for example, . The recycled aggregate may have a diameter of, for example, 2.5 mm and 8 mm, and the cleaning yarn may have a diameter of, for example, 0.08 mm or less, but is not limited thereto.

The cleaning yarn S311 and the regenerated aggregate S312 may be introduced together with the solidifying agent (S32) to be subjected to low speed kneading (S33). Slow-speed kneading can proceed in a device such as, for example, a screw or a kneader, and the solidifying agent can be put in a weight ratio of 10 to 20% of the weight of the entire material. When the solidification is progressed through the low speed kneading process, the material can be transferred through a conveying means such as a bucket conveying (S34). And the high-speed kneading can be performed together with the spraying of the liquid neutralizing agent (S35) (S36). The liquid neutralizing agent may be added at a weight ratio of 3 to 8% based on the weight of the entire material. The base layer material produced through the high-speed kneading process can be stored in a storage such as a silo (S37).

Various process steps can be applied to the manufacturing process according to the present invention, and the present invention is not limited to the illustrated embodiments.

An embodiment of the manufacturing method according to the present invention will be described below.

Example

Step 1: Recycled aggregate was prepared from 350 kg of filter paper, anthracite and filtration saris, and a waste casting and 240 kg of porcelain drift.

Step 2: 200 kg of washing yarn was mixed with 600 kg of recycled aggregate, and 120 kg of fly ash, lime and alumina was added to carry out the primary kneading process.

Step 3: A mixture of 50 kg of limestone and a carbide material was added to the material subjected to the primary kneading step, and the secondary kneading step was carried out to prepare a base material.

exam

Test results for the base layer-based material made according to the example are shown in FIG.

As can be seen from FIG. 4, it can be seen that the base layer material produced by the production method according to the present invention has an absorption rate of 3% or less, a stability of 10% or less, and an absolute dry specific gravity of 2.5 or more. In addition, it can be seen that environmentally harmful substances are not detected because they are environmentally harmful. Therefore, it can be seen that the base layer material manufactured by the manufacturing method according to the present invention can be used as a base material of a sidewalk or a roadway.

The product manufactured by the manufacturing method according to the present invention can be used as a base material or a base material so that natural damage due to the mining of sand can be prevented. The manufacturing method according to the present invention has an advantage of improving the regeneration efficiency of resources while preventing environmental pollution by using waste. Also, the ground material according to the manufacturing method according to the present invention is characterized in strengthening the foundation, thereby reducing the cost and improving the stability of civil works. In addition, the process according to the invention has the advantage that no environmental pollutants are released.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention . The invention is not limited by these variations and modifications, but is limited only by the claims appended hereto.

S111: Waste absorbent S112: Recycled aggregate
S113: General cleaning yarn S312: Recycled aggregate
S32: Solidifying agent S35: Liquid neutralizing agent spraying

Claims (1)

A method for producing a base layer material using a waste adsorbent material comprising a filtration yarn, an anthracite, and a filtration saris,
Crushing and recycling the recycled aggregate, the waste adsorbent and the general washing yarn;
Adjusting a particle size of the selected material;
Subjecting the material having the controlled particle size to a primary kneading while adding a solidifying agent thereto;
A step of secondarily selecting the kneaded material; And
And performing a secondary kneading while injecting a neutralizing agent into the secondary sorted material,
Wherein the recycled aggregate comprises waste sand, slag and porcelain drift, and the waste sorbent includes anthracite and filter yarn,
In the grinding and sorting step, the iron component is removed by the electromagnet deaerator, and the grinding machine grinds the grinding machine to a diameter of a predetermined size or smaller. Thereafter, the grinding machine separates the small-diameter workpiece according to the diameter of the workpiece, The hammer is crushed while passing through the hammer, and the material having a large diameter is impact crushed in the crushing space,
The primary kneading is performed by low speed kneading by a screw or a kneader while adding a solidifying agent including fly ash, lime and alumina in an amount of 10 to 20 wt% of the total material weight, and the secondary kneading is carried out in an amount of 3 to 8 wt% Wherein high-speed kneading is carried out while a liquid neutralizing agent containing magnesium, limestone, slaked lime, quicklime, carbide material or a mixture thereof is fed.

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