KR20100071154A - Artificial soil and its manufacturingmethod by using sludge - Google Patents

Abstract

PURPOSE: A manufacturing method of artificial soil using sludge and yellow soil is provided to secure the drainage property of the soil, and to help the plant growth by irradiating far infrared rays. CONSTITUTION: A manufacturing method of artificial soil using sludge and yellow soil comprises the following steps: drying the sludge for 30 minutes at 100~150 deg C; mixing the dried sludge and the yellow soil in a ratio of 8:2, stirring and molding the mixture at an kneader(16), and crushing the molded mixture into the diameter of 0.1 millimeter; drying the crushed mixture; molding the dried mixture into a granule state, drying the granule, and forming the artificial soil after a plasticizing process.

Description

Artificial Soil And Its ManufacturingMethod By Using Sludge}

The present invention relates to a method of manufacturing artificial earth with excellent porosity using an artificial earth manufacturing apparatus, and more particularly, to a method for manufacturing artificial earth by combining sludge and ocher in an appropriate ratio, drying and molding it. .

As is well known, as the industry develops, a large amount of waste or sludge is discharged from each household or industrial field. These wastes and sludges that are inevitably discharged are only partially treated and recycled, but a considerable amount of waste or sludge has been left unlicensed or discarded or has not been found to be properly disposed of. .

For example, sewage sludge has recently been banned from being completely reclaimed, and marine dumping under international convention is not far away, so the treatment of sludge is inevitably serious.

On the other hand, some of the technologies for manufacturing zeolites using such wastes or sludges have been disclosed in Korea, but imported raw materials such as volcanic stone are added, or in many cases, the dependence of supplements other than the original development products is high.

In addition, the zeolite manufactured as described above is structurally weak and has a low strength even when granulated, and thus it is difficult to be used directly as a lightweight artificial soil material. It has the disadvantage of not being relatively lightweight, dense in tissue, and lacking in strength.

It is an object of the present invention to provide a method for producing artificial soil having excellent porosity and high strength by combining sludge and ocher in an appropriate ratio.

In addition, another object of the present invention is to provide a method for producing artificial earth by the first step of drying the sludge and then mixing the dried sludge and ocher, then molding and drying the sludge.

The present invention is a hopper into which sludge and ocher are introduced, a refining machine for agitating and shaping the sludge and ocher supplied through the hopper, and a conveyor is laminated therein and a hot air fan is installed at one end thereof, and the crushed sludge and ocher are installed. Is a primary drying furnace to be primarily dried by the hot air fan while being conveyed along the conveyor, connected to the primary drying furnace and a conveyor, and a molding furnace for forming the first dried sludge and loess into granules, and the molding. It is connected to the furnace and the conveyor, and the secondary drying furnace for removing and drying the moisture contained in the molded product, and the genital secondary drying furnace and the conveyor, and remove the moisture contained in the secondary dried product and calcined In the method of manufacturing artificial earth with excellent porosity using an artificial earth manufacturing apparatus comprising a firing furnace to make, the sludge After drying to about 60% moisture, pulverized it into powder, and then mixed with ocher, molded it in the form of granules at 50 ~ 250 ℃, and then it is again dried secondly, calcined at high temperature, After the cooling process, the diameter of the artificial soil grains is characterized in that the process of manufacturing the artificial soil is 10Ø, 20Ø, 30Ø or so.

As described above, the present invention has excellent porosity and high strength, so that the water passes well even when sprayed onto potted soil, and there is no phenomenon that the artificial soil is easily broken and also emits far infrared rays. There are advantages to help grow.

Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings. In the following detailed description, exemplary embodiments of the present invention will be described in order to accomplish the above-mentioned technical problems. And other embodiments that can be presented with the present invention are replaced by the description in the configuration of the present invention.

In the present invention, when manufacturing the artificial soil using sludge in order to improve the porosity and increase the strength, the sludge is dried twice, and then the dried sludge and ocher are mixed in an appropriate ratio (preferably 8: 2). After that, the molding, firing and cooling to implement a method consisting of a process for producing artificial earth.

In addition, the present invention does not adopt a process of combining various mixtures in the sludge and then drying the conventionally, the sludge is dried in a drying furnace at 120 ℃ for 30 minutes to remove about 40% of the water contained in the sludge, A process for blending the dried sludge (water content: 60%) and loess at an appropriate ratio was developed. This process is because it can increase the desired strength of the product, and can implement eco-friendly image and commercial colors.

In the present invention, when the ocher and the sludge is blended and then molded into a granular form, preferably, the artificial soil is manufactured to have a diameter of about 10Ø, 20Ø, and 30Ø, and the artificial soil is mainly pollen. Used for

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

1 is a plan view showing an artificial earth production apparatus using sludge according to an embodiment of the present invention, Figure 2 is a view showing the front of the artificial earth production apparatus shown in FIG.

1 and 2, the artificial soil manufacturing apparatus 10 of the present invention has a hopper 12 for storing and discharging sludge and ocher, and a refining machine 16 is installed at the lower end of the hopper 12. . The refining machine 16 agitates and shatters the sludge discharged from the hopper 12 and loess, and discharges the agitated and shattered sludge and the loess by extrusion.

At the lower end of the refining machine 16, a primary drying furnace 18 is installed. The primary drying furnace 18 is dried to remove 10% of moisture contained in the sludge and ocher in order to prevent deformation of particles generated by immediately high temperature firing of the sludge and ocher ground in the refining machine 16. The conveyor 20 stacked in a zigzag layer is installed inside, and a hot air fan 22 is installed at one side thereof. The conveyor 20 transfers the sludge and loess crushed in the refining machine 16 in a zigzag. The hot air fan 22 dries the sludge and the ocher transported in a zigzag by the conveyor 20.

On the other hand, a molding furnace 26 connected to the primary drying furnace 18 and the conveyor 24 is installed at the lower end of the primary drying furnace 18. The molding furnace 26 is dried in the primary drying furnace 18 to compress the sludge and ocher transported on the conveyor 24 by a compression method to form a granular shape.

At the lower end of the molding furnace 26, a secondary drying furnace 30 connected to the molding furnace 26 and the conveyor 28 is installed. The secondary drying furnace 30 dries 60% of the moisture contained in the sludge and loess formed into granules in the forming furnace 26.

At the lower end of the secondary drying furnace 30, a firing furnace 34 connected to the secondary drying furnace 30 and the conveyor 32 is installed. The firing furnace 34 plastically processes the granular sludge and ocher dried in the secondary drying furnace 30 to discharge the artificial soil, which is the resultant 36 from which water is finally removed, to the outside.

Hereinafter, a method of manufacturing artificial earth having excellent porosity using the artificial earth manufacturing apparatus of the present invention configured as described above will be described in detail with reference to FIGS. 1 to 3.

First, the sludge is dried in a drying furnace at 100 to 150 ° C. (preferably 120 ° C.) for 30 minutes so that the moisture content remaining in the sludge becomes 60%. That is, about 40% of moisture contained in the sludge is removed.

Subsequently, when the dried sludge and ocher are introduced into the hopper 12, the sludge and the ocher flow into the refiner 16 installed at the lower end of the hopper 12 and then stirred by the refiner 16. And molded and finely pulverized, and then flows to the primary drying furnace 18 by extrusion. At this time, the dried sludge and ocher are pulverized in a powder state to have a diameter of 0.1mm, the sludge and the ocher are mixed in a ratio of 8: 2 and stirred and molded. Here, although the ratio of the sludge and the loess may be 8.5: 1.5, it is most ideal that the ratio of the loess does not exceed 20% of the sludge.

Next, the sludge and the ocher are transferred to the zigzag by the conveyor 20 installed inside the primary drying furnace 18, and then dried by the hot air fan 22 first, and then the primary drying furnace 18. It flows into the shaping | molding furnace 26 by the conveyor 24 installed in the lower end of it.

Subsequently, the sludge and the ocher are formed into granules while passing through the forming furnace 26, specifically, 45 minutes to 1 hour at a temperature of 50 to 250 ° C. In this case, when the sludge and the loess are molded, they are molded into granules. Preferably, the granules are formed to have a diameter of about 10Ø, 20Ø, and 30Ø.

Thereafter, the granulated particles flow to the secondary drying furnace 30 installed at the lower end of the forming furnace 26 to be dried secondaryly, and then plastically processed in the firing furnace 34 installed at the lower end of the secondary drying furnace 30. It is made of artificial earth through. At this time, the drying conditions of the secondary drying furnace 30 is preferably dried for 30 minutes at 120 ℃, the plastic working conditions are preferably baked for 1 hour at 700 ℃.

1 is a plan view showing an artificial earth production apparatus using sludge according to a preferred embodiment of the present invention.

Figure 2 is a front view showing an artificial earth production apparatus using the present inventors sludge.

FIG. 3 is a view showing a method of manufacturing artificial soil using sludge and ocher sequentially using the manufacturing apparatus shown in FIG. 1.

<Description of the symbols for the main parts of the drawings>

10: artificial earth manufacturing apparatus 12: hopper

16: refining machine 18,30: drying furnace

20,24,28,32: Conveyor 22: Heater

26: forming furnace 34: firing furnace

36: Output

Claims (1)

A hopper 12 into which sludge and ocher are introduced; A refining machine (16) for stirring and shaping the sludge and loess supplied through the hopper (12); Conveyor 20 is stacked therein and a hot air blower 22 is installed at one end thereof, and the crushed sludge and ocher are first dried by the hot air blower 22 while being transported along the conveyor 20. Furnace 18; A forming furnace (26) connected to the primary drying furnace (18) and a conveyor (24) to shape the primary dried sludge and loess into granules; A secondary drying furnace 30 connected to the molding furnace 26 and a conveyor 28 to remove and dry moisture contained in the molded product 36; It is connected to the genital secondary drying furnace 30 and the conveyor 32, using an artificial earth manufacturing apparatus comprising a firing furnace 34 for removing and firing the water contained in the secondary dried product 36 In the method of manufacturing artificial earth with excellent porosity, A first step of drying the sludge at 100 to 150 ° C. for 30 minutes so that the moisture content remaining in the sludge is 60%; The dried sludge is mixed with loess at a ratio of 8: 2, and then injected into the hopper 12 to flow into the refining machine 16, and then stirred and molded in the refining machine 16 to 0.1. milling to have a diameter of mm and then passing it back to the primary drying furnace 18 by extrusion; The resultant of the second step is transferred to the hot air fan 22 by a conveyor 20 installed in the primary drying furnace 18, and then dried in the hot air fan 22 first, and then the primary A third step of flowing the forming furnace 26 by the conveyor 24 installed at the lower end of the drying furnace 18; The result of the third step is molded in a granulated state at a temperature of 50 ~ 250 ℃ and 45 minutes to 1 hour in the molding furnace 26, and then the molded granules are installed at the bottom of the molding furnace 26 After flowing to the secondary drying furnace 30 and dried for 2 minutes at 120 ℃ 30, it is subjected to a plastic working for 1 hour at 700 ℃ in a firing furnace 34 installed at the bottom of the secondary drying furnace 30 A method of manufacturing artificial earth using sludge, characterized in that the fourth step of manufacturing artificial soil.

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