KR20170142142A - Manufacturing method of effervescent pellet type silicic acid fertilizer for freshwater crop cultivation - Google Patents

Abstract

The present invention relates to a production method of an effervescent pellet-type silicic acid-based fertilizer for the cultivation of freshwater crops. More specifically, the present invention relates to a foaming diffusible pellet-type fertilizer composition for rice cultivation, which comprises silicate in a mixture of a carbonate salt, an organic acid and an excipient, and can be mechanically sprayed by using a powered device, an unmanned helicopter, or the like. The pellet-type fertilizer of the present invention is combined by introducing into a pelletizer a mixture of 10-50 parts by weight of silicate, 20-80 parts by weight of a carbonate salt, 20-80 parts by weight of an organic acid, and 5-30 parts by weight of an excipient, and treating the mixture at 68-83C. The pellet-type fertilizer produced according to the present invention can be sprayed using devices such as a powered fertilizer sprayer or an unmanned helicopter, and can be effectively used to treat a large area with a silicic acid-based fertilizer. Further, due to being formed in a pellet form which is smaller than a tablet form, the pellet-type fertilizer has the advantage in that when the fertilizer is applied to soils, a silicic acid component is evenly dispersed without being clumped unevenly.

Description

Technical Field [0001] The present invention relates to a manufacturing method of effervescent pellet type silicic acid fertilizer for freshwater crop cultivation,

The present invention relates to a process for producing expandable pelletized silicate fertilizer for freshwater crop cultivation, and more particularly to a process for producing foamable pelletized silicate fertilizer for silage cultivation, which comprises silicate in a mixture of carbonate, organic acid and excipient and is capable of machine spraying, To a pellet type fertilizer composition.

Silica is an essential inorganic nutrient that absorbs large amounts of manure and crops such as rice, barley and wheat. It increases silicate, potassium and lignin in the rice body to strengthen the stem, thereby reducing the amount of garments and reducing the content of nitrogen and magnesium. And it is known that it improves photosynthetic efficiency and building production efficiency by improving the light receiving posture by maintaining the upright position of the leaves, raising the ripening rate, increasing the amylose content, and improving the protein content.

In addition, to improve the physico - chemical characteristics of paddy soils, the pH of paddy soils is corrected, the desorption rate of adsorbed phosphoric acid is increased, the efficiency of rice phosphorus utilization is increased, and the oxidizing power of roots is increased to alleviate the toxicity of iron and manganese It is known to be effective.

The silicate fertilizer currently supplied includes powdered silicate fertilizer, silicate fertilizer, granular silicate fertilizer, and silicic acid liquid type fertilizer used as fertilizers. Is a non-water soluble silicate fertilizer that dissolves only in soil microorganisms or organic acids in plants.

Even in the case of liquid silicic acid, which is a silicate agent, it is difficult to dilute and use it due to the viscosity of liquid silicic acid, and it is difficult to treat such a problem that when mixed with an acidic preparation, There are many difficulties in handling rice paddies with heavy sprayers or hoses, and their use is limited.

Purified silicate fertilizer using foaming has been developed and the use amount is reduced and the treatment method is easily improved, but other problems are found.

Silicate fertilizer of tablet type treats 1 ㎏ per 300 ㎡. It can be processed easily in about 2 ~ 3 minutes. However, in order to treat large area, it is necessary to enter more than once into the rice field to treat the whole area with simple hand- There is a limit to large area processing.

In addition, the population aged 65 and over is expected to reach an ultra-aged society by increasing from 11% of the total population in 2010 to 20.8% in 2026. In rural areas, the proportion of aged 65 and over is already 30 % Of the total population. In the rural realm where the aging population is getting worse, the refined type silicate fertilizer does not work when treating a small area, but it can be easily processed without entering the rice field. However, in order to treat a large area, In addition, there is a problem that it is difficult to treat in the case of old age or women because it is treated in the period of the treatment period and also in the period when the weather becomes warm from the beginning to the end.

Korean Patent Publication No. 10-1064899 (a foamable tablet type fertilizer composition for cultivating fresh water crops containing silicates) of the present invention relates to a foamable tablet type fertilizer composition for growing fresh water crops containing silicate in a mixture of carbonate, organic acid and excipient , It is lower than the pellet production yield in the production of the purified silicate fertilizer after the heating or pulverization and is made into the purified silicate fertilizer. When applied to overseas use, the throughput is small, and when compared with pellets, there is a problem of diffusion.

KR 10-1064899 B1 (September 10, 2011)

In order to solve the above problems, the method of manufacturing expandable pelletized silicate fertilizer for freshwater crop cultivation according to the present invention makes it possible to spray silicate fertilizer on a large area by using a machine such as a fertilizer power sprayer or an unmanned helicopter It has its purpose.

It is also an object of the present invention to provide a pellet-type pelletized tablet which is smaller in tablet shape than a tablet-like tablet, so that the silicic acid component can be uniformly spread and spread evenly.

In order to accomplish the above object, the present invention provides a method for producing expandable pelletized silty fertilizer for growing fresh water crops, comprising: 10 to 50 parts by weight of silicate, 20 to 80 parts by weight of carbonate, 20 to 80 parts by weight of organic acid, And 5 to 30 parts by weight of an excipient are mixed and pelletized, and the mixture is treated at a temperature of 68 to 83 캜 for bonding.

Further, the silicate is characterized by containing at least one selected from the group consisting of potassium silicate or sodium silicate.

The carbonate may be at least one selected from the group consisting of sodium carbonate, sodium bicarbonate, calcium carbonate, potassium carbonate, potassium bicarbonate, and magnesium carbonate.

The organic acid may be at least one selected from the group consisting of citric acid, tartaric acid, adipic acid, maleic acid, phthalic acid or succinic acid.

Further, the excipient is characterized by containing polyethylene glycol (PEG) as a binder.

And the carbonate and organic acid are mixed at a ratio of 1.8 to 2.5: 2.8 to 3.5 based on the mass.

The pelletized fertilizer composition of the present invention is prepared by mixing 10 to 50 parts by weight of silicate, 20 to 80 parts by weight of carbonate, 20 to 80 parts by weight of organic acid and 5 to 30 parts by weight of excipient into a pelletizer, It is possible to spray using a machine such as a fertilizer power sprayer or an unmanned helicopter by producing a pellet type fertilizer for cultivating fresh water crops, and is effective for treating silicate fertilizer in a large area.

The pellet type fertilizer of the present invention is a pellet type fertilizer wherein the binder PEG is melted by the temperature of the pelletizing unit to adsorb the other fertilizer composition while the pellet type fertilizer is adsorbed by the inner small hole And the pellet type fertilizer manufactured as described above is more economical than the purified fertilizer because the production yield is high.

In addition, when the pelletized fertilizer composition is applied to a large area, it is easy to diffuse and the silicate fertilizer component can be uniformly applied to the entire area, which is particularly advantageous when applied to overseas usage units.

Therefore, when the silicate fertilizer is pelletized and fertilized, the silicic acid component is not biased to one side, spreads evenly, and absorption of silicic acid component is promoted, thereby alleviating the rice paddy and insect pests.

FIG. 1 is a schematic view showing the shape of a test strip, the input point of a fertilizer, and the sampling point of a pellet type fertilizer diffusivity test for cultivating freshwater crops in Example 11. FIG.
Figure 2 is a schematic representation of the form of the test strip, the point of injection of the fertilizer and the sampling point of the sample in the diffusion diffusive tablet type silicate fertilizer diffusivity test of Example 12.
FIG. 3 is a graphical representation of the morphology of the test strip, the input point of the fertilizer, and the sampling point of the pellet type fertilizer diffusivity test for cultivating freshwater crops in Example 12. FIG.
4 is a state diagram showing the expandable pelletized silicate fertilizer for freshwater crop cultivation of the present invention.

The present invention relates to a process for producing expandable pelletized silicate fertilizer for freshwater crop cultivation.

In the method for producing expandable pelletized silicate fertilizer for freshwater crop cultivation according to the present invention, the pellet type fertilizer is mixed with 10 to 50 parts by weight of silicate, 20 to 80 parts by weight of carbonate, 20 to 80 parts by weight of organic acid and 5 to 30 parts by weight of excipient The mixture is pelletized, and the mixture is treated at a temperature of 68 to 83 캜 to be bonded.

The silicate includes at least one selected from the group consisting of potassium silicate or sodium silicate. The carbonate may be at least one selected from the group consisting of sodium carbonate, sodium bicarbonate, calcium carbonate, potassium carbonate, potassium bicarbonate, And the organic acid includes at least one selected from the group consisting of citric acid, tartaric acid, adipic acid, maleic acid, phthalic acid or succinic acid, and the excipient preferably includes polyethylene glycol as a binder Do.

In addition, it is preferable that the carbonate and the organic acid are mixed at a ratio of 1.8-2.5: 2.8-3.5 relative to the mass.

The present invention relates to a method for producing a pellet type fertilizer for cultivating fresh water crops, and it is preferable that the pellet type fertilizer produced according to the present invention is applied to a large area by mechanically spraying the pellet type fertilizer so that diffusion can be smoothly performed in water.

The pellet type fertilizer according to the present invention preferably contains at least one silicate group consisting of potassium silicate or sodium silicate.

The potassium silicate is a basic compound in which silicon dioxide (SiO 2) and potassium oxide (K 2 O) are bonded in various ratios. It has good solubility with other materials and shows high solubility and adhesion with other components. Products. In addition to sodium silicate, it is the most widely used water-soluble inorganic compound, and its physical and chemical properties are very similar. Compared to sodium silicate, it is less sticky, has no odor, is transparent and therefore preferred in many applications. It is well soluble in water but does not dissolve in alcohol. Potassium silicate is more soluble in water than sodium silicate, Which is resistant to whitening and has good heat resistance.

The sodium silicate is also referred to as sodium silicate and is the most widely used inorganic compound among water-soluble silicates. Na2SiO3 is a compound of formula, one of the silicates. It is obtained by fusing sodium carbonate and quartz powder. It is odorless and white solid.

It is preferable to mix at least one selected from the group consisting of sodium carbonate, sodium bicarbonate, calcium carbonate, potassium carbonate, potassium bicarbonate, or magnesium carbonate and at least one selected from the group consisting of the above silicate group consisting of potassium silicate or sodium silicate Do.

The carbonate is a compound in which hydrogen of carbonic acid is substituted with a metal and is composed of carbon dioxide and a metal oxide or hydroxide.

The sodium carbonate is also referred to as soda or carbonate, and an anhydride is a soda ash having a high hygroscopicity of a white powder. Monohydrate, monohydrate, decahydrate, and carbonate and sodium hydroxide are known. It is mainly contained in glass and acts to block ultraviolet rays when passing through light. It also has a property of dissolving in water because it contains sodium ion.

The sodium bicarbonate is also known as sodium bicarbonate and is the most widely used material as an antacid. White powder has a distinctive taste. It is weakly alkaline, neutralizing stomach acid in the stomach and generating carbon dioxide gas.

The calcium carbonate serves to improve the acidity of the soil, as well as to supply calcium to plants and fruits.

The potassium carbonate is also referred to as potassium carbonate or carly, and is contained in the material in which the plant is burnt with white powder. Carbonic acid gas is blown into a potassium hydroxide solution and burned in a rotary kiln, or filtration and concentration are determined. It does not dissolve well in ethanol. When it works with acid, it produces carbon dioxide. When it absorbs carbon dioxide, it changes into potassium bicarbonate.

The potassium bicarbonate is a colorless transparent crystal or a white granular powder. It is easily dissolved in water to show alkali and not to be dissolved in alcohol. It is mainly used as an acidity regulator, and is used as a nutrient enhancer, a pH adjuster, an alkaline agent and a swelling agent.

The magnesium carbonate is a magnesium salt of carbonic acid, which is naturally produced as magnesite. When sodium carbonate is added to the aqueous solution of magnesium through carbon dioxide, it is usually precipitated as trihydrate. It is also used as raw material mineral of goto fertilizer as a main component of roadmate.

As described above, it is preferable to mix at least one selected from the group consisting of citric acid, tartaric acid, adipic acid, maleic acid, phthalic acid or succinic acid in the mixture of silicate and carbonate.

The citric acid is a crystalline product and an anhydrous product, and is divided into crystalline citric acid and anhydrous citric acid. Crystalline smokeless acid is used as an anti-acidic agent for acidic seasoning and cooking oil. Anhydrous citric acid is used as an acidifier for food or powdered food which does not need to contain moisture. It has strong acidity than crystalline citric acid because there is no crystal, use.

The tartaric acid is also referred to as tartaric acid and is an organic compound present in the form of four isomers as one of the hydroxy acids.

The adipic acid is also referred to as adipic acid, and is composed of a straight chain of 6 carbon atoms and slightly soluble in water to show acidity. It is also soluble in ethanol and acetone, but not in ether or hydrocarbon solvents. Benzene to cyclohexane, and is mainly used as a raw material for nylon 66, as well as as a raw material for vinyl chloride resin plasticizers, paints, and pharmaceuticals.

The maleic acid is an organic compound in which two carboxylic acids are located on the side of an ethylene group and is an unsaturated dicarboxylic acid, and is a starting material for the synthesis of organic acids such as succinic acid and tartaric acid.

The phthalic acid is a kind of aromatic dicarboxylic acid, which is industrially oxidized by air with a vanadium oxide catalyst to obtain phthalic anhydride. When heated to a temperature near the melting point, it decomposes to form phthalic anhydride. Colorless crystals that do not dissolve well in water or ether but dissolve well in ethanol.

The succinic acid is a kind of acid in the Krebs cycle which is oxidized to fumaric acid by succinic acid dehydrogenase, and is a kind of dicarboxylic acid which is chain-like in the form of a colorless columnar or crystalline form of tabular acid.

In addition to the silicate, carbonate, and organic acid, an excipient is preferably added to facilitate foaming.

Preferably, the excipient is selected from the group consisting of polyethylene glycol (PEG), microcrystalline cellulose (PEG), gelatin, and saccharides as a binder and a lubricant.

PEG (polyethylene glycol) is a polymer of ethylene oxide as a surfactant, and is usually a colorless transparent solid or a white solid and serves to disperse water-soluble and water-insoluble substances.

The microcrystalline cellulose (Avicel) is a microcrystalline cellulose which partially oxidizes and hydrolyzes pale normal α-cellulose, that is, natural cellulose, and is in the form of a fine powder.

Gelatin is a kind of inducible protein obtained by treating collagen, which is a natural protein constituting animal skin, tendon, cartilage, etc., with hot water, and is mainly used for photographic photoresist, adhesive, hemostatic agent, processed food, medicinal capsule, microorganism incubator and the like.

In addition, 0.3 ~ 0.5% of magnesium stearate, calcium silicate, coconut powder and diatomaceous earth were used as the lubricant, but it did not affect the pellet molding and foam improvement.

It is preferable to pulverize the components listed above into a size of 350 to 500 mesh and mix the silicate, carbonate, organic acid and binder in the mixer for 20 to 60 minutes, more preferably 30 to 40 minutes .

When the sizes of the silicate, carbonate, organic acid and binder are less than 350 mesh, the pellet type fertilizer for cultivating freshwater crops is not preferable because the spread of the pellet type fertilizer is not preferable. When the size is more than 500 mesh, it is not economically preferable.

The pulverized and uniformly mixed material is preferably pelletized by being poured into a machine having a pressure roller.

The pellet is formed by the pressure of the pellet molding machine without adding moisture and liquid to the machine in which the pressure roller is formed and the pressure of the pellet molding machine is preferably formed by pressing at a pressure of 120 to 200 kPa, Preferably at a pressure of 150 to 180 kPa

.

In addition, the inside of the pelletizer is preferably provided with a pressure roller for lowering the fertilizer composition with a pellet-sized extrusion hole.

The temperature of the pelletizer is preferably 68 to 83 ° C, and most preferably 70 to 80 ° C. When the temperature of the pelletizer is less than 68 ° C, it is difficult to adsorb the binder PEG and other fertilizer compositions, thereby failing to adsorb the pelletized fertilizer. When the temperature exceeds 83 ° C, chemical fertilization of the fertilizer composition occurs, And even if the pellets are formed, diffusion of silicate and other fertilizer compositions may not be smoothly performed when the fertilizer is treated in rice paddies, which is not preferable.

In addition, it is preferable that the pellet type fertilizer manufactured as described above is made such that the temperature of the pellet type fertilizer is lowered while the conveyer equipped with the cooling device moves, and the produced pellet type fertilizer is packed in a bag or a plastic And most preferably, vacuum packaged in a special wrapping paper of aluminum.

In one embodiment, a fertilizer composition containing silicate, carbonate, organic acid, and binder is added to a disk having the pellet-sized extrusion holes formed therein, so that PEG as a binder in the fertilizer composition is dissolved by the temperature of the pelletizer, The pelletized fertilizer is discharged to the lower part by the pressure roller which is lowered to the original plate on which the extrusion hole is formed.

Hereinafter, the present invention will be described more specifically by way of examples. It will be apparent to those skilled in the art, however, that the following examples are illustrative of the present invention only and do not limit the scope of the present invention. That is, a simple modification or change of the present invention can be easily performed by those skilled in the art, and all such modifications and alterations can be considered to be included in the scope of the present invention.

Example 1: Selection of foaming agent

The carbonate components and organic acid components shown in Table 1 were mixed and selected based on the foaming power and the foaming time based on the ease of use and the unit cost of the raw materials. The result was selected as potassium carbonate and citric acid, Type fertilizer as a foaming agent.

≪ Reactivity measurement results for each combination of carbonate and organic acid > lead carbonate
Organic acid Sodium bicarbonate Sodium carbonate Potassium carbonate Calcium carbonate Magnesium carbonate Tartaric acid A A A B B Adipic acid B B B C D Citric acid A A A A C Maleic acid A A A A C Phthalic acid B C B C C Seosin acid B B B B C

- The reactivity is divided into A to D by the degree. The reactivity is A and the reactivity is weakly divided into B, C, and D grades. D is almost not reacted.

Example 2: Adjustment of ratio of foaming agent

Experiments were conducted to select the best ratio of potassium carbonate and citric acid to the best foaming result, as shown in Table 1 above. The foaming power was divided into 5 stages (5: very strong, 4: strong, 3: moderate, 2: weak, 1: very weak).

≪ Potassium carbonate: Reactivity measurement result by citric acid ratio > Potassium carbonate: Citric acid Foaming power 1: 1 5 2: 1 5 3: 1 4 4: 1 3 1: 2 5 1: 3 4 1: 4 3

As shown in Table 2, it can be seen that the foaming power is significantly lowered as the ratio of potassium carbonate to citric acid is 4: 1 or more and 1: 4 or more.

Example 3: Selection of binder

Experiments were conducted to select binders that did not react with foaming agents.

<Result of pellet molding by liquid binder> Liquid binder Foaming agent reaction (foaming) Input ratio Molding cooking oil × 3%, 5% Impossible palm oil × 3%, 5% Impossible PEG1000 × 10%, 15% Impossible PEG400 × 5% Impossible Potassium silicate (liquid phase) ○ - - Sodium silicate (liquid) ○ - -

As shown in Table 3 above, edible oil, palm oil, PEG and alcohol did not foam, but pellet molding was impossible.

&Lt; Results of forming sugar saccharide pellets > Binder content Pellet molding Sugar 10, 15% Impossible Lactose 10, 15% Impossible glucose 10, 15% Impossible

<Result of binding agent gelatin pellet molding> Binder content Pellet molding gelatin 5%, 10%, 15% Impossible

<Result of binding agent Avicel pellet molding> Binder content Pellet molding Avicel 5%, 10%, 15% Impossible

&Lt; Result of binding agent PEG6000 and 8000 pellet molding > Binder content Pellet molding PEG6000 5 to 30% possible PEG8000 5 to 30% possible

As shown in Tables 3 to 7, when PEG was used as a binder, the binder content was found to be the most suitable as a binder by pelletizing at 10 to 18%, and the difference in pellet molding of PEG6000 and PEG8000 appears I did.

Example 4: Determination of titration of binding agent PEG6000

&Lt; Results of Binder PEG6000 Pellet Molding > PEG6000
(content) burglar firing output Defect rate Final yield 10% Prize Ha 77.4% 25.93% 57.33% 12% Prize Ha 81.4% 14.21% 69.33% 14% Prize Ha 83.4% 9.72% 75.29% 15% Prize Ha 83.6% 8.9% 76.16% 16% Prize Ha 83% 13.32% 71.94% 17% Prize Ha 84.4% 15.2% 71.57% 18% Prize Ha 89.7% 30% 62.79%

As shown in Table 8, it was determined that the amount of the binder PEG6000 was 15% at the ratio of 1: 1 by mass of carbonic acid and citric acid, but the method was required to improve the foaming power because the foam was totally defective. Were carried out.

Example 5: Selection of lubricant

&Lt; Results of lubricant pellet molding of magnesium stearate > Magnesium stearate
(content) burglar firing output Defect rate Final yield 0% Prize Middle 89.5% 10.4% 80.19% 0.5% Prize Ha 85.4% 27.2% 62.17% 0.3% Prize Ha 86.7% 23.2% 66.58%

&Lt; Results of molding calcium silicate pellets of lubricant > Calcium silicate
(content) burglar firing output Defect rate Final yield 0% Prize Middle 89.5% 10.4% 80.19% 0.5% Prize Ha 89.1% 23.9% 67.80% 0.3% Prize Ha 89.3% 20.8% 70.72%

&Lt; Results of molding a coconut powder pellet of a lubricant > Coconut powder
(content) burglar firing output Defect rate Final yield 0% Prize Middle 89.5% 10.4% 80.19% 0.5% Prize Ha 87.1% 27.8% 62.88%

<Results of Diatomite Pellet Molding> Diatomaceous earth (content) burglar firing output Defect rate Final yield 0% Prize Middle 89.5% 10.4% 80.19% 0.5% Prize Ha 88% 17.4% 72.68%

As shown in Tables 9 to 12, when the magnesium stearate, calcium silicate, coconut powder and diatomaceous earth were used as the lubricant, it was confirmed that the application of the lubricant was inadequate because the reduction of the production amount, the increase of the defective rate and the improvement of the foaming were not observed.

Example 6: Selection of carbonate and organic acid titration ratios

<Result of pellet molding by foaming agent ratio> Potassium carbonate: Citric acid burglar firing output Defect rate Final yield Pellet forming time (10 kg) 1: 1 Prize Middle 91.5% 9.83% 82.50% 3 minutes 30 seconds 2: 1 Prize Ha 83% 20.44% 66.03% 3 minutes 21 seconds 3: 1 Prize Ha 90.1% 18.54% 73.39% 4 minutes 2 seconds 3: 2 Prize Ha 85% 9.03% 77.32% 3 minutes 30 seconds 1: 2 Prize Prize 92% 10.80% 82.20% 8 minutes 1: 3 Prize Prize 92% 11.87% 81.07% 12 minutes 9 seconds 2: 3 Prize Prize 92.5% 7.19% 85.84% 4 minutes 20 seconds

As shown in Table 13, as the ratio of citric acid in the ratio of potassium carbonate and citric acid was increased, the foaming was improved and the pellet production rate was slowed down. As a result, it was confirmed that the ratio of potassium carbonate and citric acid was 2: 3, and the following experiment was conducted to find a method for improving the pellet production rate.

Example 7 Control of Binder Content at Carbonate and Organic Acid Ratio 2: 3

<Results of pellet molding by binder content> PEG6000
content burglar firing output Defect rate Final yield Pellet forming time (10 kg) 15% Prize Prize 91.8% 10.12% 82.51% 4 minutes 43 seconds 12% Prize Prize 91.6% 8.56% 83.76% 2 minutes 42 seconds 10% Prize Prize 91.6% 11.61% 80.97% 3 minutes 1 second

As shown in Table 14, when the ratio of potassium carbonate and citric acid was 2: 3 and the PEG content was 12%, the pellet molding was the most excellent and the molding time was also shortened.

Example 8: Control of silicate content

<Results of pellet molding (50% ~ 10%) by active ingredient (silicate) content> Silicate
content burglar firing output Defect rate Final yield Pellet Formation Time (10%) 50% Prize Ha 78.2% 21.7% 61.24% 4 minutes 2 seconds 40% Prize Ha 83.2% 13.5% 71.97% 3 minutes 58 seconds 30% Prize Prize 89.1% 5.76% 83.97% 3 minutes 11 seconds 20% Prize Prize 88.9% 5.88% 83.68% 3 minutes 16 seconds 10% Prize Prize 90.2% 6.71% 84.15% 4 minutes 10 seconds

40%, 30%, 20%, and 10% of the silicate in the composition having the PEG content of 12% and the potassium carbonate and citric acid ratio of 2: 3 as shown in Table 15, , It was found that the foaming was poor and the production efficiency was lowered at the level of the silicate of 40% or more. When the silicate content was below 30%, the pellets were found to be formed, and the silicate 30% and 20% Were found to be comparable to each other.

<Result of pellet molding by active ingredient (silicate) content> Silicate
content burglar firing output Defect rate Final yield Pellet forming time (10 kg) 30% Prize Prize 91.6% 8.56% 83.76% 2 minutes 42 seconds 28% Prize Prize 91.6% 4.94% 87.08% 2 minutes 49 seconds 26% Prize Prize 89.1% 5.76% 83.97% 3 minutes 11 seconds

As shown in Table 16, when the content of potassium carbonate and citric acid was adjusted to 2: 3 and the content of silicate was adjusted to 28% in the fertilizer prepared by adjusting the PEG content to 12%, it was confirmed that the pellet molding was most excellent .

Example 9: Fertilizer power sprayer spraying experiment

Fertilizer power sprayers were spray tested by adjusting the size and power (power) of the fertilizer spray holes.

<Fertilizer power sprayer spraying - spray distance (m)> Fertilizer spreader
(Maruyama) Hole size 1st stage 2nd stage 3rd stage 4 stage 5 stage 6 stages 7th stage 8 stage 9 stage power
(Power) 1st stage × × 7 7 7 7 7 7 7 2nd stage × × 10 11 12 12 12 12 12 3rd stage × × 16 16 16 16-17 16-17 16-17 16-17 4 stage × × 17 ~ 18 17 ~ 18 17 ~ 18 17 ~ 18 17 ~ 18 17 ~ 18 17 ~ 18 5 stage × × 19-20 19-20 19-20 19-20 19-20 19-20 19-20 6 stages × × 20 ~ 22 20 ~ 22 20 ~ 22 20 ~ 22 20 ~ 22 20 ~ 22 20 ~ 22

As shown in Table 17, pellet spraying was possible from the 4th stage of the fertilizer spraying hole size, and it was confirmed that the power (power) was sprayed the farthest from the 6th stage.

<Fertilizer power sprayer spraying - spraying time (1kg)> Fertilizer spreader
(Maruyama) Hole size 1st stage 2nd stage 3rd stage 4 stage 5 stage 6 stages 7th stage 8 stage 9 stage power
(Power) 1st stage × × - - - - - - - 2nd stage × × 5 to 6 minutes 4-5 minutes 4-5 minutes 4-5 minutes 4-5 minutes 4-5 minutes 4-5 minutes 3rd stage × × 4-5 minutes 3 to 4 minutes 3 minutes 3 minutes 3 minutes 3 minutes 3 minutes 4 stage × × 4 minutes 2 minutes 1-2 minutes 1 minute 1 minute 1 minute 1 minute 5 stage × × 3 to 4 minutes 1-2 minutes 1-2 minutes 1 minute 1 minute 1 minute 1 minute 6 stages × × 2-3 minutes 1-2 minutes 1-2 minutes 1 minute 1 minute 1 minute 1 minute

As shown in Table 18, it was confirmed that the spraying time takes 1 to 6 minutes depending on the spraying hole and the power (power). When spraying while changing the size and power of the fertilizer hole of the power sprayer when spraying the pellets, I was able to control the distance and time of spraying.

Example 10: Fertilizer Unmanned Helicopter Spray Test

The unmanned helicopter used the products of the non - airline, and conducted experiments in the actual rice fields. The spraying test was conducted while controlling the size of the spraying hole of the helicopter in the range of 1 to 25.

In the case of the pellet type fertilizer for cultivating fresh water crop according to the present invention, the size of the pores was able to be sprayed in 20 to 25 stages. The amount of fertilizer that can be loaded at a time is maximum 16 kg, and in the case of the fertilizer of the present invention, it was possible to fertilize it to an area of 4,800 pyeong at the time of flight.

Example 11: Diffusion test in an indoor water tank

Diffusion experiments were carried out in indoor water tanks at the composition ratios shown in Table 16 below by applying domestic usage.

<Pellet type fertilizer composition ratio for freshwater crop cultivation> Use of additives Raw material name Input rate (% by weight) Silicate raw material Potassium silicate 18 Sodium metasilicate 10 blowing agent Potassium carbonate 24 Citric acid 36 Binder PEG6000 12

As shown in Table 19, the results of the diffusivity test in the indoor water tank at the composition ratio are shown in FIG.

As shown in FIG. 1, water of 5 cm was drained in a 2.3 m × 2.3 m water tank, and 5 g of pellet type fertilizer for cultivating fresh water crops was administered to the settled water tank. After 3 hours, 6 hours and 12 hours after the administration of the pellet type fertilizer for cultivating fresh water crops, samples were taken at the points (A to C) shown in FIG. 1, and the concentration of silicic acid was determined and shown in Table 20 below .

<Diffusion test result in indoor water tank (applied domestic usage)> ingredient Collection point Concentration of collected components (ppm) After 3 hours After 6 hours After 12 hours Silicic acid A1 2.34 2.44 2.51 A2 2.41 2.51 2.50 A3 2.45 2.49 2.53 A4 2.41 2.49 2.48 B1 2.58 2.55 2.56 B2 2.54 2.59 2.52 B3 2.45 2.43 2.50 B4 2.44 2.43 2.45 C1 (point of administration) 2.57 2.56 2.53 C2 (point of administration) 2.54 2.51 2.57 C3 (point of administration) 2.61 2.63 2.60 C4 (point of administration) 2.66 2.69 2.67

As shown in Table 20, there is almost no difference between the silicic acid concentration at the injection points C1 to C4 and the silicic acid concentrations at the points A and B, and it can be confirmed that the silicic acid is uniformly diffused.

Example 12: Diffusivity secondary experiment in an indoor water tank

In order to test the diffusivity in indoor water tanks, we applied overseas usage and applied fertilizer application system of silicate fertilizer from Thailand and Vietnam which are major rice growing countries. Fertilizer tests were carried out using fertilized silicate fertilizer of tablet type as a control. The experimental treatment was performed as shown in FIGS. 2 and 3.

2.3m × 2.3m After pouring 5cm of water into the water tank, 1.25g of pelleted fertilizer for cultivating freshwater crops and purified silicate fertilizer were administered. After 3 hours, 6 hours, and 12 hours of curing the fertilizer, samples were taken at points A to C shown in FIG. 2 and FIG. 3, and the concentration of silicic acid was determined.

<Diffusion test results in indoor packaging (applied overseas usage)> ingredient Collection point Concentration of collected components (ppm) After 3 hours After 6 hours After 12 hours Tablets Pellet type Tablets Pellet type Tablets Pellet type Silicic acid A1 0.19 0.69 0.20 0.70 0.23 0.68 A2 0.13 0.15 0.16 A3 0.15 0.15 0.14 A4 0.19 0.20 0.17 B1 0.91 0.60 0.90 0.61 0.89 0.62 B2 0.83 0.67 0.91 0.63 0.94 0.69 B3 0.81 0.65 0.85 0.60 0.88 0.65 B4 0.79 0.63 0.81 0.61 0.74 0.63 C1
(Administration point) 2.37 0.64 2.15 0.66 2.11 0.64 C2
(Administration point) 0.70 0.71 0.70 C3
(Administration point) 0.69 0.65 0.69 C4
(Administration point) 0.67 0.61 0.67

As shown in Table 21, in the case of the foamed diffusion-type purified silicate, the silicate content was remarkably lowered as the distance from the application point (C) was increased. On the other hand, the pellet type fertilizer , It is confirmed that the similar silicate content in the whole area is analyzed and uniformly diffused.

That is, it can be confirmed that the pellet type fertilizer for cultivating fresh water crop according to the present invention has a larger spreading property than the purified silicate fertilizer.

Example 13: Effect of pellet type fertilizer for cultivating freshwater crops according to the present invention

The pellet type fertilizer for cultivating freshwater crops according to the present invention was tested in the domestic paddy field by applying domestic usage (1 kg / 10a). Foaming diffusible tabular silicate fertilizer and untreated control were used as a control.

<Effect of pellet type fertilizer for domestic freshwater crop cultivation (yield)> Treatment Above ground building
(g / week) Plant height
(Cm) Number of tears
(dog) Per week
Sorghum
(dog) extra pay
Number of Ribs
(dog) Heavenly
(g) Maturity rate
(%) purchase
(g / week) Quantity
Indices
(%) Pellet type 88.87 92.20 26.27 25.13 62.90 22.74 77.44 27.80 11.6 Tablets 85.15 95.80 26.40 24.80 63.22 22.84 77.36 27.70 11.2 No treatment 73.63 96.80 24.00 23.20 66.26 22.09 73.34 24.90 -

<Effect of pellet type fertilizer for domestic freshwater crop cultivation (Clothes index)> Treatment Fresh weight Soy sauce stripe 3 interchange Four The In frustration Closing Index Pellet type 8.06 63.63 18.61 10.55 6.22 4.38 816.00 81.23 Tablets 7.93 65.73 18.97 10.03 6.17 4.58 824.33 81.48 No treatment 7.58 63.87 19.00 10.43 7.30 3.66 542.67 115.75

As shown in Tables 22 to 23, it can be confirmed that there is no difference in the yield and the coverage index between the pellet type fertilizer for growing fresh water crops and the siliceous fertilizer with foamed diffusion type tablet, and it can be confirmed that it is better than the untreated.

In addition, when the fertilizer according to the present invention and the purified silicate fertilizer are applied, it can be confirmed that the same effect is exhibited.

Example 14: Effect of pellet type fertilizer for cultivation of fresh water crops

In order to test the effect of the pellet type fertilizer for freshwater crop cultivation according to the present invention applied abroad, the experiment was carried out in Chinese shrimp rice paddy, and the results of the growth test are shown in Table 24 below.

<Pellet-type fertilizer effect test for cultivation of freshwater crops in China> Treatment Above ground building
(g / week) Plant height
(Cm) Number of tears
(dog) Per week
Sorghum
(dog) extra pay
Number of Ribs
(dog) Heavenly
(g) Maturity rate
(%) purchase
(g / week) Quantity
Indices
(%) Pellet type 80.12 95.25 25.38 23.75 56.7 20.01 73.44 19.79 13.02 Tablets 73.15 99.35 24.51 23.01 55.3 19.95 72.5 18.40 5.08 No treatment 69.54 100.45 23.05 22.54 54.9 19.98 70.81 17.51 -

As shown in Table 24, when the pellet type fertilizer for growing freshwater crops according to the present invention was used in a large area treatment, the yield was improved as compared with the foamed diffusible purified silicate fertilizer. That is, it can be seen that the fertilizer according to the present invention is more suitable than the siliceous fertilizer with foamed diffusion-diffusing type in the case of applying large-area silicate fertilizer.

The pellet type fertilizer for cultivating fresh water crops as described above can reduce work time and fertilizing time and can increase the fertilization efficiency by allowing the silicate component absorbable form of the crop to exist in the fresh water for a long time, , The absorption of silicate components of the crop is promoted, thereby alleviating the rice paddy and insect pests, and consequently improving crop productivity.

Claims (1)

A method for producing expandable pelletized silicate fertilizer,
Wherein the pelletized silicate fertilizer comprises 10 to 50 parts by weight of a silicate selected from at least one of potassium silicate or sodium silicate,
20 to 80 parts by weight of a carbonate selected from the group consisting of sodium carbonate, sodium bicarbonate, calcium carbonate, potassium carbonate, potassium bicarbonate or magnesium carbonate,
20 to 80 parts by weight of an organic acid selected from the group consisting of crystalline citric acid, tartaric acid, adipic acid, maleic acid, phthalic acid or succinic acid,
A polymer of ethylene oxide which is a colorless transparent solid or a white solid and which is a surfactant for dispersing water-insoluble substances, such as PEG (polyethylene glycol) or Avicel (microcrystalline cellulose), gelatin and saccharides And 5 to 30 parts by weight of an excipient,
The relative mixing ratios of the carbonate and organic acid components in the components are in a ratio of 1.8 to 2.5: 2.8 to 3.5,
When the components are mixed, the components are pulverized to a size of 350 to 500 mesh, mixed for 30 to 40 minutes, pelletized, pelletized to a pressure of 120 to 200 kPa and a temperature of 68 to 83 캜,
Wherein the pelletized fertilizer is vacuum-packed in an aluminum special wrapping paper to produce a foamed pelletized silicate fertilizer for freshwater crop cultivation.

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