KR20110034316A - Soil modifier and its manufacturing method - Google Patents

Abstract

PURPOSE: A method for manufacturing soil conditioner is provided to neutralize acidified soil by adsorbing agricultural chemical components and chemical fertilizer components and to reduce the danger of heavy metals included in the soil. CONSTITUTION: A method for manufacturing soil conditioner comprises the steps of: mixing 60 ~ 90 weight% of at least one mineral selected from yellow soil, clay, and kaolin with 10 ~ 40 weight% of wood powder to obtain a mixed powder; mixing 50 ~ 90 weight% of the mixed powder with 10 ~ 50 weight% of water to obtain a dough; molding the dough in a sphere or polyhedron shape in a molder or injecting the mixture in an extruder; drying the molded material at room temperature or drying the molded material in a drying furnace; and firing the dried molded material at 400 ~ 500°C for 2 ~ 4 hours while not supplying oxygen.

Description

Soil modifier and its manufacturing method {.}

The present invention relates to a soil improver, and to neutralize the acidified soil by adsorption of pesticides or chemical fertilizers to acidify the soil planting crops or tree planting, and to reduce the risk of heavy metals by adsorbing heavy metals present in the soil. The present invention relates to a soil conditioner and a method for manufacturing the same, which can remove pollen moisture and remove odors and pests.

Republic of Korea Patent Application No. 2007-0108047 "Soil improvement method using charcoal"

In general, the acidification of the soil is a soil reaction due to the climate of acidic soils due to the loss of the free base due to the decomposition of acid salts when the evaporation amount is greater than the rainfall, the decomposition of silicate minerals and hydrolysates, acidification by corrosion or fertilizer, Acidification due to acid rain and pollution.

In particular, fertilizers include ammonium sulfate, superphosphate, potassium sulfate, etc. The soil is changed to acidic because of the use of nitrogen, phosphoric acid, potassium, and sulfuric acid, which are needed for plants to grow. In addition, plants ingest the basic metal in the soil for growth. When the roots are uprooted, the soil is deprived of the base and the acid becomes stronger, so that the soil is acidified.

This acidification of the soil prevents the plants from growing properly.

In order to solve this problem, the soil is sprayed with charcoal to adsorb the pesticides or chemical fertilizers remaining in the soil to neutralize the acidified soil, as well as to adsorb and insolubilize the heavy metals present in the soil to accumulate in the human body through crops. It can reduce the risk of heavy metals, and the anion or far-infrared rays generated from the charcoal itself can restore the soil ecosystem by activating microorganisms in the soil, and the minerals abundant in charcoal can replenish the soil by replenishing minerals lacking in the soil. Improving.

However, problems such as flying by wind or sweeping down by rain due to sprinkling charcoal on the soil as described above occurred.

The present invention has been made to solve this problem, the object of the present invention is to prepare a solid of a certain size by mixing charcoal and natural minerals to prevent it from being blown by the wind or washed down by rain. It neutralizes acidified soil by adsorbing pesticides or chemical fertilizers, which acidify soils for planting crops or trees, and reduces the risk of heavy metals by adsorbing heavy metals in the soil. Provided is a soil improving agent capable of removing pests and a method of manufacturing the same.

The present invention for achieving the above object,

Mixing step of obtaining a mixed powder by mixing 60 to 90% by weight of any one mineral selected from ocher, clay, kaolin and 10 to 40% by weight of wood powder;

A kneading step of obtaining a dough by mixing 50 to 90% by weight of the mixed powder and 10 to 50% by weight of water obtained through the mixing step;

A molding step of molding the dough obtained through the kneading step into a mold to form a spherical or polyhedron, or extruding the extruder into an extruder and then cutting the mold at a predetermined interval;

A drying step of drying the molded product obtained through the molding step at room temperature or a drying furnace;

The firing step of firing the dried molding obtained through the drying step for 2 to 4 hours at a temperature of 400 ~ 500 ℃ in the state of not supplying oxygen;

Other objects and effects of the present invention will become apparent from the following detailed description, and the detailed description and examples showing the preferred embodiments of the present invention do not limit the scope of the present invention.

According to the soil improving agent and the manufacturing method according to the present invention, by mixing charcoal and natural minerals to produce a solid of a certain size to prevent it from being blown by the wind or washed down by rain. It neutralizes acidified soil by adsorbing pesticides or chemical fertilizers, which acidify soils for planting crops or trees, and reduces the risk of heavy metals by adsorbing heavy metals in the soil. It has the effect of eliminating pests.

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

1 is a process chart showing a method for producing a soil improving agent according to the present invention.

First, the wood powder applied to the present invention is carbonized to become charcoal. Such charcoal has many pores formed on the surface, so that the surface area is very large, and the pores formed on the surface have a lot of adsorption functions for dehumidification, deodorization, and purification of liquid or gas. It is used.

Also, charcoal generally contains 2-3% ash (mineral mineral nutrients). This is a nutrient extracted from the ground for the growth of wood, Ca is about 40%, K is about 20% of negative ions are generated to suck oxygen and eventually sterilize and have a very large surface area, which serves as a source of oxygen and useful microorganisms. It acts to adsorb gas.

The ocher applied to the present invention is composed of 68% silicon, 27% magnesium oxide, 5% calcium oxide, the efficacy of the loess is known to be dependent on the microorganisms present therein, 200 to 200 million to 3 to 5 g of loess As the above bacteria are inhabited, they have the effect of releasing harmful substances contained in material cells, and there are various kinds of enzymes in ocher. Among them, protease enzymes have the function of decomposing pollutants such as odors and wastes. Catalase enzymes neutralize lipid peroxide, absorb and settle oil to regulate water quality, and there are many enzymes that are beneficial to the environment.

Such ocher inhibits the disappearance of red tide and the formation of green algae, and separates and evicts heavy metals such as mercury, cadmium, and lead, and is known to have the effect of suppressing and deodorizing bacteria such as molds.

Hereinafter, referring to Figure 1, look at each step of the manufacturing method of the soil improver according to the present invention.

1. Mixing Step

First, a mixed powder is obtained by mixing wood powder with any one selected from ocher, clay, and kaolin.

At this time, the mixed powder is mixed with 60 to 90% by weight of the wood powder 10 to 40% by weight of the ground mineral to obtain a mixed powder.

Preferably, the mineral material is to maintain various shapes in a predetermined size through the forming step with the minerals charcoal carbonized to be described later, along with the improvement of the soil due to the efficacy of the yellow loess when the mineral is applied Can increase the effect.

2. Kneading step

Water was added to the mixed powder obtained through the mixing step, followed by kneading to obtain a dough.

Preferably the dough is made by mixing 50 ~ 90% by weight of the powder and 10 ~ 50% by weight of water into a kneader.

At this time, if the water is less than the amount of the dough becomes a bonding strength is lowered, if more than the amount of the dough is thinned and the drying time becomes longer.

3. Molding Step

Molding the dough obtained through the kneading step to a certain size.

At this time, the dough is put into a molding die or molded or extruded into an extruder, and then cut at a predetermined interval.

4. Drying Step

The molding obtained through the molding step is dried at room temperature or in a drying furnace.

Preferably the molding is dried for 48 to 50 hours in a shade of room temperature or for 8 to 10 hours in a drying furnace of 50 to 70 ℃.

5. Firing step

The dried molding obtained through the drying step is fired to prepare a soil improver.

The firing is put into a dried molded product in a firing furnace in the state that oxygen is not supplied and calcined for 2 to 4 hours at a temperature of 400 ~ 500 ℃.

At this time, when the plastic processing is performed in the state that oxygen is not supplied in the firing process, carbonization occurs in the wood powder component included in the molding.

The heat source of the kiln is divided into reducing salts, neutral salts, and oxidizing salts according to the degree of supply of oxygen. The heat source applied to the present invention is calcined in a reducing salt in a state in which the supply of oxygen is blocked inside the kiln. As temperature increases gradually, hardening and carbonization proceed by reducing salts. At this time, wood powder is decomposed without oxidization to be aliphatic and aromatic by condensation polymerization to form a planar molecule with condensed benzene rings. do.

After that, the molded product is in a condensed molecule state and is completely cured and carbonized by high heat, and condensation molecules release hydrogen and hydrocarbon gas from the amorphous carbon to become graphite having a hexagonal ring network planar aggregate structure.

The temperature of the kiln is limited to the range of 400 ~ 500 ℃, which means that when the firing temperature is lower than 400 ℃ the wood powder is not carbonized, and when the firing temperature is higher than 500 ℃ recrystallization occurs in the ocher component will increase the compressive strength As a result, the inherent porosity of natural minerals is lost, and not only the advantages of loess are lost, but also energy waste.

Hereinafter, one preferred embodiment according to the present invention will be described in detail.

Kneading was obtained by kneading a mixture of 70% by weight of yellow clay and 30% by weight of wood powder and 30% by weight of water.

The dough was placed in a cube-shaped mold and pressed to obtain a molded product. Then, the dried product was dried in a drying furnace at 60 ° C. for 9 hours, and then put the dried molded product into a firing furnace without oxygen supply. Firing for a time to prepare a soil improver.

This invention can be implemented in other various forms, without deviating from the mind or main characteristic. Therefore, the above-described embodiments are merely examples in all respects, and should not be construed restrictively. The scope of the present invention is shown by the scope of the claims, and is not limited by the specification text. Again, all variations and modifications belonging to the equivalent scope of the claims are within the scope of the present invention.

1 is a process chart showing a method for preparing a soil improving agent according to the present invention.

Claims (2)

Mixing step of obtaining a mixed powder by mixing 60 to 90% by weight of any one mineral selected from ocher, clay, kaolin and 10 to 40% by weight of wood powder; A kneading step of obtaining a dough by mixing 50 to 90% by weight of the mixed powder and 10 to 50% by weight of water obtained through the mixing step; A molding step of molding the dough obtained through the kneading step into a mold to form a spherical or polyhedron, or extruding the extruder into an extruder and then cutting the mold at a predetermined interval; A drying step of drying the molded product obtained through the molding step at room temperature or a drying furnace; And a firing step of firing the dried molded product obtained through the drying step at a temperature of 400 to 500 ° C. for 2 to 4 hours in a state of not supplying oxygen. Soil improving agent produced by the method of claim 1.

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