JP3087944B2 - Oyster shell mixed fertilizer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an oyster shell, a phosphate fertilizer,
The present invention relates to a single grain mixed fertilizer having good disintegration in water and soil, comprising at least one or more fertilizers selected from humus fertilizers and fortress fertilizers.

[0002]

2. Description of the Related Art Fertilizers have been used in powder form long ago, but have the drawback that fertilizers are easily scattered during fertilization, and after fertilization, fertilizers are washed away by rainwater or fertilizers cover the ground surface. Thus, there are problems such as impairing the water permeability and air permeability of the ground. Thereafter, in order to improve these problems, a method of granulating fertilizer into particles of a suitable size has been proposed and is currently being practiced. In the conventionally proposed granular calcareous fertilizer, deliquescent sodium salt is added to calcareous fertilizer,
A method has been proposed in which granulation is carried out by adding a concentrated solution of a stefen wastewater, a concentrated solution of a waste liquid of alcoholic fermentation, a ligninsulfonate solution, a plant foliate powder or the like (Japanese Patent Laid-Open No. 52-3066).
3, JP-A-58-99189, JP-A-59-15221
9, JP-A-60-141694, JP-A-60-2213
83). Also, a method has been proposed in which soluble lime, a basic substance, phosphoric acid, and the like are added to soluble lime and reacted to granulate (JP-A-54-123469).

On the other hand, a great number of granulations of phosphate fertilizers have been proposed and implemented so far. Most of the granular phosphate fertilizers are granulated molten phosphorus fertilizers, and potassium silicate, alcohol fermentation waste liquid (waste molasses fermentation waste liquid), polyvinyl alcohol, lignic acid, soluble starch, monkey Water-soluble binders such as by-products of pulp pulp (pulp waste liquid) and carboxymethyl cellulose (JP-A-53-58371, JP-A-57-149)
885, JP-A-58-20790), magnesium sulfate (JP-A-60-65785), or a combination of molasses fermentation waste liquor or pulp waste liquor and alkaline earth metal hydrate (Japanese Patent Laid-Open No. 58-185490). Furthermore, a slow-release nitrogen fertilizer and superphosphate or heavy superphosphate are added to the molten phosphorus fertilizer (Japanese Patent Laid-Open No. 52-6650,
JP-A-52-6651) or a method of reacting with phosphoric acid (JP-A-60-122788) to perform granulation has also been proposed. There are very few proposals on granulation of humus fertilizers, and there is a method in which slag by-produced during refining of metallic magnesium, humic acid and phosphoric acid are mixed and granulated (Japanese Patent Application Laid-Open No. 03-237082).

[0004]

As described above, granulation of fertilizers has the problems that powder fertilizers had in the past, such as the scattering of fertilizers during fertilization, the flow of fertilizers due to rainwater after fertilization, and the ground surface. This technology has been developed to improve the water permeability and impaired air permeability of the ground due to coating with fertilizer. What is important in the granulation of fertilizers is that the particles must be firm enough not to break during handling of fertilizers, as well as during subsequent distribution and fertilization, and to be easy to handle. It is. Further, the particulate fertilizer needs to be disintegrated at an appropriate speed by moisture such as rain or soil and dispersed in soil. In order to satisfy the requirements of these particulate fertilizers, various granulation methods have been proposed according to the types of fertilizers and crops.

As described above, as a method of granulating calcareous fertilizer, a method of adding a water-soluble binder to calcareous fertilizer and a method of adding soluble silicic acid, basic substance and And the like, and then reacting to granulate. Oyster husk is a kind of calcareous fertilizer. However, the method proposed so far does not allow satisfactory granulation, or it is difficult to disintegrate when fertilized even if granulation is good to some extent. there were. On the other hand, the granulation of fused phosphate fertilizers involves adding a water-soluble binder or magnesium sulfate to the fused phosphate fertilizer, combining molasses fermentation waste liquor or pulp waste liquor with alkaline earth metal hydrate, slow-release nitrogen fertilizer and superphosphate lime. Alternatively, it is achieved by the addition of lime heavy superphosphate or the like, and there is also a method in which granulation is carried out by reacting phosphoric acid with molten phosphorus fertilizer. Furthermore, regarding the granulation of humus fertilizer, there has been no proposal for a method of granulating humus fertilizer alone.
As described above, only a method of adding phosphoric acid and humic acid to slag and granulating it has been proposed.

[0006]

SUMMARY OF THE INVENTION According to the present invention, a oyster shell is mixed with at least one fertilizer selected from a phosphoric acid fertilizer, a humus fertilizer, and a magnesia fertilizer to provide a single grain mixed fertilizer of good quality. It has been achieved as a result of earnest research to obtain. That is, according to the present invention, at least one or more fertilizers selected from a phosphate fertilizer, a humus fertilizer, and a magnesia fertilizer are mixed with the pulverized oyster shells, and the lignin compound and
A mixture of oyster shells having good disintegration in water and soil, characterized by adding and kneading at least one water-soluble binder selected from waste water and alcoholic fermentation waste. Fertilizer. As the phosphate fertilizer of the present invention, fused phosphate fertilizer, processed phosphate fertilizers such as heavy clay burnt phosphorus contains a fast-acting component and a slow-acting component in a well-balanced manner, and the effect as a fertilizer is long-lasting, It is preferable because the quality of the granulated product is also excellent. Also not particularly limited as humus fertilizer, Nihonjukagakukogyo (trade name) manufactured by Azumin, Noboru manufactured by Nippon Koekate (Ltd.)
Recording trademark name Haifumin or the like can be used. Examples of magnesia fertilizers include hydroxylated magnesia fertilizer, sulfated magnesia fertilizer, acetate magnesia fertilizer, humic acid magnesia fertilizer, processed magnesia fertilizer, lignin magnesia fertilizer, by-product magnesia fertilizer, and mixed magnesia fertilizer. Although it can be used, among them, particularly preferred are hydroxylated magnesia fertilizer and sulfated magnesia fertilizer, which have a great effect on the growth of crops.

[0007] The granulation can water-soluble binder, Li
Gunic acid, lignin sodium sulphonate, sodium lignin
Lignin compounds such as da and alcohol fermentation wastewater
(Waste molasses fermentation waste liquid)
However, for the purposes of the present invention, lignin compounds are best in terms of ease of granulation and disintegration in water and soil.
The water-soluble binder is 4% based on the total amount of oyster shell and fertilizer.
It is preferably added in the range of ８8% by weight. Further, the shape of the granulated product is preferably a sphere having a diameter of 1 to 4 mm because mechanical spraying can be performed smoothly and disintegration after fertilization is appropriately performed. The mixing ratio of the oyster husk and the others, that is, the phosphate fertilizer, the humus fertilizer and / or the fortress fertilizer can be arbitrarily selected, but it is preferable that the fertilizer other than the oyster hull contains 5% or more of the total weight. The achievement of granulation of oyster shells, which has been considered difficult to granulate until now, according to the present invention as described above, can greatly contribute to the development of agriculture.

[0008]

As described above, according to the present invention, oyster husks are mixed with phosphate fertilizer, humus fertilizer and magnesia fertilizer in appropriate amounts, and the mixture is selected from lignin compounds and alcohol fermentation waste liquid.
Addition and kneading of at least one kind of water-soluble binder, granulated oyster shell is a single-mixed fertilizer. In this method, granulation was easily performed, and the uniformity of particle size was good. . The successful granulation of oyster shells according to the present invention has made it possible to apply mechanical spraying, thereby reducing labor required for rigorous work called 3K and greatly reducing agricultural labor. In addition, since the fertilizer has uniform components, it is necessary to granulate the phosphate fertilizer and calcareous fertilizer separately and mix them at an appropriate ratio (bulk blending).
No component unevenness occurs. Furthermore, the fertilizer is characterized in that the particles are easily disintegrated after fertilization and are well dispersed in the soil, so that it is very effective in growing the crop.

[0009]

Example 1 First, oyster shells were pulverized into small pieces by a pulverizer and sieved to remove large pieces. Next, the oyster shells of the small particles and the finely pulverized fused phosphorus fertilizer were charged into a blender at a weight ratio of 8: 2 and mixed well, and based on the total amount of the oyster shells and the molten phosphorus fertilizer, 5% by weight of sodium ligninsulfonate was added and kneaded well. Further, this was charged into a granulator and granulated while spraying a small amount of water. As a result, clean particles having a shape of a true circle with a diameter of 1 to 4 mm were obtained. When this product was fertilized on a crop, the fertilizer was easy to fertilize and the disintegration was good, so the growth of the crop was good.

[0010]

Example 2 First, oyster shells were crushed into small pieces with a crusher, and sieved to remove large pieces. Next, the oyster shell powder and the small particle-shaped hydroxide mica fertilizer fertilizer are charged into a blender at a weight ratio of 60:40, respectively, and mixed well. Then, 4% by weight of sodium ligninsulfonate was added and kneaded well. Further, this product was charged into a granulator and granulated while spraying a small amount of water. As a result, clean particles having a diameter of 1 to 4 mm and almost a perfect circle were obtained. When this product was fertilized on a crop, the fertilizer was easy to fertilize and the disintegration was good, so the growth of the crop was good.

[0011]

Example 3 First, oyster shells were crushed into small pieces by a crusher and sieved to remove large pieces. Next, the oyster shell powder, small particulate mould heavy-burning phosphorus and humus fertilizer were charged into a blender at a weight ratio of 70:20:10, respectively, and mixed well. 8% by weight of sodium lignate was added to the total amount of the humus fertilizer and kneaded well. Further, this product was charged into a granulator and granulated while spraying a small amount of water. As a result, clean particles having a diameter of 1 to 4 mm and almost a perfect circle were obtained. When this product was fertilized on a crop, the fertilizer was easy to fertilize and the disintegration was good, so the growth of the crop was good.

[0012]

As described above, according to the present invention, oyster shells
One or more fertilizers selected from phosphate fertilizers, humus fertilizers and mast fertilizers are mixed in appropriate amounts and mixed with lignin compound.
Products and alcoholic fermentation wastewater
One mixed fertilizer of oyster husks granulated by adding and kneading one kind of water-soluble binder . In addition to the main raw materials used in this method, the granulating agent is inexpensive, and special equipment is required. However, since it can be manufactured sufficiently with general equipment, low-cost single-grain mixed fertilizers can be obtained.

────────────────────────────────────────────────── ─── Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI C05D 5/00 C05D 5/00 11/00 11/00 C05G 3/00 101 C05G 3/00 101 (56) References JP 50-3850 (JP, A) JP-A-51-27575 (JP, A) JP-A-58-41788 (JP, A) JP-A-50-47886 (JP, A) JP-A-59-73485 (JP, A) A) (58) Fields investigated (Int. Cl. ⁷ , DB name) C05G 1/00 C05G 3/00-3/00 103 C05B 13/02 C05D 3/00 C05D 5/00 C05D 11/00

Claims (5)

(57) [Claims] To 1. A oyster shells were finely pulverized, phosphate fertilizer, at least one kind of fertilizer selected from among humic fertilizer and verbosity fertilizer mixture an appropriate amount at a time, to, Oyo lignin compound
A mixture of oyster shells having good disintegration in water and soil, characterized by adding and kneading at least one water-soluble binder selected from waste water and alcoholic fermentation waste. fertilizer. 2. The single fertilizer mixture of oyster shells having good disintegration in water and soil as claimed in claim 1, wherein the phosphate fertilizer is a processed phosphate fertilizer such as a fused phosphorus fertilizer or a heavy clay burnt phosphorus. 3. The mixed fertilizer of oyster shells having good disintegration in water and in soil according to claim 1, wherein the magnesia fertilizer is a magnesia-hydroxylated magnesia or a magnesia-sulphate fertilizer. 4. Water-soluble based on the total amount of oyster shell and fertilizer
The single grain mixed fertilizer of oyster shells according to claim 1, wherein the binder is added in a range of 4 to 8% by weight . 5. The single grain mixed fertilizer of oyster shells according to claim 1, wherein the granulation is formed into a spherical shape having a diameter of 1 to 4 mm.