JPS58194789A - Manufacture of granular composite fertilizer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for producing a granular composite fertilizer. For details, see granular compound fertilizer containing organic fertilizer with high hardness.
The present invention relates to a method for manufacturing with high yield.

Fertilizer made by granulating a fertilizer mixture consisting of organic fertilizer components and inorganic fertilizer components using fermentation by-product liquid is known as fermentation waste liquid dry compound fertilizer, but the organic fertilizer components do not dissolve in water and Because it contains almost no components that dissolve in IO, the organic fertilizer components in the compound fertilizer are
If it exceeds % by weight, granulation is extremely difficult and the yield of granulation is poor, and even if granulation is possible, the hardness is small and most of the granules are crushed during drying or handling of the product.

It was difficult to obtain a satisfactory granular compound fertilizer.

The present inventor conducted intensive research to produce a granular compound fertilizer containing organic fertilizer with high hardness with a high yield, and discovered that when a specific compound is present, the product yield can be greatly improved. The present invention was completed based on the knowledge that it is possible to obtain a granular compound fertilizer with high hardness.

In other words, the present invention +1 aims to industrially advantageously produce a granular composite fertilizer of great practical value. In the method of granulating using a product liquor, this is achieved by allowing a gynecological animal to exist in water obtained by reacting an aldehyde having a carbon number of y or less with urea.

The present invention will be explained in detail below.

Organic fertilizers used in the present invention include fish scraps, meat scraps,
Meat bones, steamed lower horns, dried blood, raw bones, steamed bones, steamed leather, animal fertilizers such as dried silkworms, soybean oil cakes, rapeseed oil cakes, fallen beef oil cakes, linseed oil cakes, sesame oil cakes, castor oil cakes , vegetable fertilizers such as rice bran oil cake, coconut oil cake, and soy sauce cake. These organic fertilizers have a particle size larger than /6 mesh, preferably ♂ mesh
It is preferable to use particles with a particle size of about /4 mesh.

The amount of organic fertilizer used is /θ~! as the content in the fertilizer mixture. θ weight %, preferably about 20 to θ weight %. If this amount is too small, the characteristics of the organic fertilizer formulation will be diminished, resulting in a fertilizer with few slow-release components. On the other hand, if the amount is too large, granulation becomes difficult and granular fertilizer cannot be obtained.

Inorganic fertilizers include ammonium sulfate, urea, 61[
Nitrogen fertilizers, such as ammonium, ammonium phosphate,
Examples include phosphoric acid fertilizers such as superphosphate lime, heavy JIJ phosphate lime, dissolved phosphorus fertilizer, calcined phosphorus fertilizer, young soil superphosphate, and potassium fertilizers such as potassium sulfate and potassium chloride.

These 71 mineral fertilizers are 6θ mesh, preferably l
It is preferable to use particles with a particle size smaller than the θ mesh.

The fertilizer mixture of the present invention is a mixture of the above-mentioned organic fertilizer and inorganic fertilizer, and when applied to paddy fields, it prevents floating,
To prevent caking or moisture absorption during storage, diatomaceous material, bentonite, gypsum, magnesium hydroxide,
Inorganic powders such as slaked lime can also be added.

The amount of such inorganic powder added is preferably about 3% by weight based on the content in the fertilizer mixture. If the amount is too large, the fertilizer components will decrease, which is not preferable.

Fermentation byproducts include alcoholic fermentation, glutamic acid,
Contains about 30-60% by weight of solids such as sugars, proteins, and glue produced during fermentation processes such as lysine, ornithine, aspartic acid and other amino acid fermentations, citric acid, gluconic acid and other organic fermentations, and antibiotic fermentation. By-product fluid is given. The amount of the fermentation by-product liquid to be used is 0.3 to 0.3 to the solid content of the fermentation by-product liquid based on the above fertilizer mixture.
This is not a good idea because it requires a lot of heat and time to increase the IO weight %, preferably OJ to ♂.

Slightly water-soluble condensates obtained by reacting aldehydes with a carbon number or less and urea (hereinafter referred to as aldehyde-urea condensates) include isobutyraldehyde, normal butyraldehyde, propionaldehyde, crotonaldehyde, and acetaldehyde. It is obtained by reacting urea with an aldehyde having a carbon number of Z or less, such as formaldehyde, or a mixture thereof, and specifically, isobutylidene diurea, normal butylidene diurea, propylidene diurea, and crotonylidene. Examples include diurea, ethylidene diurea, and a reaction product of formaldehyde and urea that has the same solubility in water as isobutylidene diurea. As a typical example.

Examples include isobutylidene diurea and crotonylidene diurea, which are commercially available as slow-release fertilizers.

The aldehyde urea condensate is preferably 60 mesh!
It is preferable to use particles with a particle size smaller than the θ mesh.

Moreover, the amount used is 0.
1 to 3% by weight, preferably O0S to λ weight X1. If too little is used, the effect of improving product yield and product hardness cannot be obtained; conversely, even if too much is used, no particular effect will be observed. In order to produce the granular compound fertilizer of the present invention, usually The above-mentioned fertilizer mixture consisting of organic fertilizer components and inorganic fertilizer components is granulated by rolling in the presence of an aldehyde urea condensate using a plate-type or drum-type granulator while spraying the fermentation by-product liquid. and dry the obtained granules.

In order to have the aldehyde urea condensate present during the above granulation, the aldehyde urea condensate may be mixed in advance with the above organic fertilizer component, inorganic fertilizer component, or a mixture thereof, or transfer urea condensate may be mixed in advance. It may be added and mixed when making grains.

When producing a granular fertilizer containing organic fertilizer by the method of the present invention, a product with good yield and high hardness can be obtained, which is extremely advantageous both in terms of production and application.

EXAMPLES Hereinafter, the present invention will be specifically explained with reference to examples, but the present invention is not limited to the following examples unless it exceeds the gist thereof.

In the examples, "parts" and "%" indicate "parts by weight" and "% by weight," respectively.

In addition, the product yield is expressed as a percentage of the particle size obtained relative to the weight of the raw materials used, and 2 to 4 as a percentage of the weight of my granular compound fertilizer.1. The product hardness was determined by measuring the compression breaking pressure of granular composite fertilizers with particle diameters λ of 3 to 3 using a Honya type hardness meter, and showed an average of 1.20 particles.

Examples / ~ 3 and Comparative Examples / 2 parts of rapeseed meal of ♂Meshpas, /2Meshion, 2 parts of urea, 4 tO parts of ammonium sulfate, 1 part of ammonium phosphate, 20.6 parts of potassium chloride, and 1 part of bentonite J. To the mixed fertilizer mixture (organic fertilizer component amount, 20%), 10θ mesh pass isobutylidene diurea (manufactured by Mitsubishi Chemical Corporation, trade name IBDU) in the amount shown in the table below was added, and the mixture was mixed in a dish-type granulator. , Perform rolling granulation while spraying 3 parts of alcohol fermentation by-product liquid (manufactured by Fukuoka International Trade and Industry Bureau Higo-Otsu Alcohol Factory, solid content 50%) b.
Then use a drum dryer? Drying was performed at θ°C for 7 hours to obtain a granular composite fertilizer.

The product yield and product hardness were as shown in the table below.

For comparison, the results obtained when imbutylidene diurea was not used are also shown.

Table/Example and Comparative Example 2? Mixed with 20 parts of steamed leather powder of Metschpas/Comeshion and 75 parts of rapeseed oil cake, 4 parts of urea, 4 parts of ammonium sulfate, 4 parts of ammonium phosphate, 7 parts of ammonium chloride, and 7 parts of diatomaceous earth. The same isobutylidene diurea used in Example/in the amount shown in Table 2 below was added to the fertilizer mixture (organic fertilizer content: 32%) to produce a granular composite fertilizer in the same manner as in Example/. did.

The product yield and product hardness were as shown in Table 2 below.

For comparison, the results obtained when isobutylidene diurea was not used are also shown.

Front side Sender: Mitsubishi Chemical Industries, Ltd. Representative Patent Attorney Hase - (7 others)

Claims (1)

[Claims] (1) In a method of granulating a fertilizer mixture consisting of an organic organic material component and an inorganic fertilizer component using a fermentation by-product liquid, a poorly water-soluble product obtained by reacting an aldehyde with a size below the prime number of grams with urea. A method for producing a granular compound fertilizer characterized by the presence of a condensate of. '(2) Claim No. 1, wherein the amount of the water-insoluble condensate obtained by reacting an aldehyde having carbon number y or less with urea is 0.7 to 3% by weight based on the fertilizer mixture. 1)
The method for producing a granular compound fertilizer according to claim 0 (3-The method for producing a granular compound fertilizer according to claim 1 or 2J, wherein the organic fertilizer component is 10 to 10% by weight of SO in the fertilizer mixture) (41) The amount of the fermentation by-product liquid used is 0.3 to /θ weight % of the fertilizer mixture as solid content in the fermentation by-product liquid, Claims (1) to (1) Section 2) or Section (3)
A method for producing a granular compound fertilizer as described in Section 1.