JP2006265061A - Granulated fertilizer composition - Google Patents
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Abstract
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本発明は、固結防止性能および粉立ち防止性能が長期間に渡って持続する粒状肥料組成物に関するものである。 The present invention relates to a granular fertilizer composition having anti-caking performance and anti-dusting performance that lasts for a long period of time.
粒状肥料は、一般に、燐鉱石を硫酸、燐酸および硝酸の少なくとも１種を用いて酸分解した後、これをアンモニアで中和して得られる泥状スラリーおよび／または燐酸、硫酸、硝酸などをアンモニアで中和して得られるスラリー状生成物と、硫安、硝安、尿素、硫酸加里、塩化加里等の原料用固体肥料物質を転動造粒系等の公知の方法により混合造粒することによって取得されている。
また、原料用固体肥料物質単体粉末または混合物粉末を造粒系に供給して水、熱水および／またはスチーム、および／または結合材として廃糖蜜、リグニンスルホン酸塩、ベントナイト等を利用して造粒する方法も知られている。
そして、造粒生成物は乾燥、冷却された後、製品粒径粒子を篩別分離される。残りの生成物はいわゆる循環品として造粒系に返還供給されている。このようにして得られた粒状肥料は従来から２つの大きな品質上の問題点を有している。
Granular fertilizer is generally a slurry of sludge obtained by acid-decomposing phosphate ore with at least one of sulfuric acid, phosphoric acid and nitric acid and neutralizing it with ammonia and / or phosphoric acid, sulfuric acid, nitric acid and the like. Acquired by mixing and granulating a slurry product obtained by neutralization with a solid fertilizer material for raw materials such as ammonium sulfate, ammonium nitrate, urea, potassium sulfate, potassium chloride by a known method such as rolling granulation system Has been.
In addition, the solid fertilizer substance powder or raw material powder for raw materials is supplied to the granulation system, and water, hot water and / or steam, and / or waste molasses, lignin sulfonate, bentonite, etc. are used as binders. A method of granulating is also known.
The granulated product is dried and cooled, and then the product particle size particles are separated by sieving. The remaining product is returned to the granulation system as a so-called recycled product. The granular fertilizer thus obtained has conventionally had two major quality problems.
問題点の第一は、固結を起こし易いため取り扱う際にしばしば困難を来たすことである。粒状肥料の固結の原因は、一般に水分吸収に起因して隣接する粒子間に生ずる飽和溶液から大気の状態変化に際して析出する結晶が各粒子間の架橋になるためであると考えられており、従来から粒状肥料の固結防止方法として、タルク、活性白土、珪藻土等の鉱産物粉末を粒状肥料に対して０．５〜１重量％添加して被覆処理することにより肥料粒子相互間の接触を妨げる方法が一般的に行なわれている。 The first problem is that it is often difficult to handle because it tends to cause consolidation. The cause of the solidification of the granular fertilizer is generally considered to be because the crystals that precipitate when the atmospheric state changes from the saturated solution generated between adjacent particles due to moisture absorption become bridges between the particles, Conventionally, as a method of preventing solidification of granular fertilizer, the fertilizer particles are contacted by adding 0.5 to 1% by weight of mineral powder such as talc, activated clay, and diatomaceous earth to the granular fertilizer and coating it. There are common ways to prevent this.
しかしながら、これらの固結防止材を使用する方法においては、固結防止材を添加し、被覆処理した直後は固結防止効果が充分達成されるものの、数日程度経過すると固結防止材の鉱産物粉末が肥料粒面より徐々に剥離し、このため保管中に固結現象が増大するという欠点がある。 However, in the methods using these anti-caking materials, the anti-caking material is sufficiently achieved immediately after the addition of the anti-caking material and after the coating treatment, but after a few days have passed, The product powder is gradually peeled off from the fertilizer grain surface, and this causes a drawback that the caking phenomenon increases during storage.
問題点の第二は、前記の如く期間の経過と共に鉱産物粉末が肥料粒面より除々に剥離して来るため、施肥時に粉立ちが起こり施肥作業に支障をきたすという欠点がある。 The second problem is that the mineral powder gradually peels off from the fertilizer grain surface with the passage of time as described above, so that there is a disadvantage that powdering occurs during fertilization and hinders the fertilization work.
固結防止性能および水面浮上防止性能を改善する方法として、粒状肥料にトリエチレングリコールおよび鉱産物粉末を添加し、被覆処理する方法が知られている（特許文献１参照。）。
しかしながら、この方法に於いては、３ケ月程度迄は固結防止効果および粉立ち防止効果が持続するが、３ケ月程度からトリエチレングリコールが肥料の中に徐々に浸透して肥料粒面が乾いて来るため、鉱産物粉末が肥料粒面より徐々に剥離し、固結および粉立ちが増大して行くという欠点がある。
However, in this method, the caking prevention effect and the powdering prevention effect are maintained until about 3 months, but from about 3 months, triethylene glycol gradually permeates into the fertilizer and the fertilizer grain surface dries. Therefore, there is a drawback that the mineral powder is gradually peeled off from the fertilizer grain surface, and consolidation and powdering increase.
本発明の目的は、１年程度の長期間に渡って固結防止性能および粉立ち防止性能が持続する粒状肥料組成物を提供することにある。 An object of the present invention is to provide a granular fertilizer composition that maintains anti-caking performance and anti-dusting performance for a long period of about one year.
本発明者は、長期間に渡って固結防止性能および粉立ち防止性能が持続する粒状肥料組成物について鋭意検討した結果、粒状肥料表面を鉱産物粉末とポリオール化合物とで被覆処理することによって、長期間に渡って固結防止性能および粉立ち防止性能が持続する粒状肥料組成物が得られることを見出し、本発明を完成するに至った。
すなわち、本発明は、粒状肥料表面を鉱産物粉末とポリオール化合物とで被覆処理した粒状肥料組成物であって、粒状肥料に対して、前記鉱産物粉末の被覆量が０．１〜５重量％、前記ポリオール化合物の被覆量が０．１〜５重量％であることを特徴とする粒状肥料組成物である。
As a result of earnestly examining the granular fertilizer composition that maintains the anti-caking performance and the anti-dusting performance over a long period of time, the present inventors have coated the surface of the granular fertilizer with a mineral powder and a polyol compound, The inventors have found that a granular fertilizer composition that can maintain anti-caking performance and anti-dusting performance over a long period of time can be obtained, and the present invention has been completed.
That is, the present invention is a granular fertilizer composition obtained by coating the surface of a granular fertilizer with a mineral product powder and a polyol compound, and the coating amount of the mineral product powder is 0.1 to 5% by weight with respect to the granular fertilizer. The granular fertilizer composition is characterized in that the coating amount of the polyol compound is 0.1 to 5% by weight.
本発明の粒状肥料組成物は、固結防止性能および粉立ち防止性能が従来品に比して大幅に改善され、１年程度の長期間保管しても固結および粉立ち現象が増大することがない。 The granular fertilizer composition of the present invention has significantly improved anti-caking performance and anti-powder performance compared to conventional products, and the caking and puffing phenomenon increases even after long-term storage for about one year. There is no.
本発明の粒状肥料は、硫安、塩安、硝安、硝酸ソーダ、硝酸石灰、硝安石灰、硝安ソーダ、尿素、ウレアホルム等等の窒素質肥料、燐安、過燐酸石灰、重過燐酸石灰等の燐酸質肥料、塩化加里、硫酸加里等の加里質肥料、およびこれらの肥料物質の組み合わせによって得られる窒素−燐酸、窒素−加里、および燐酸−加里の２成分系、窒素−燐酸−加里の３成分系、あるいはこれらにマグネシウム、硼素、マンガン等植物の生育に必要な要素を含有させた粒状肥料である。 The granular fertilizer of the present invention includes ammonium fertilizer such as ammonium sulfate, ammonium sulfate, ammonium nitrate, sodium nitrate, lime nitrate, ammonium nitrate lime, ammonium nitrate soda, urea, ureaform, etc. Nitrogen-phosphoric acid, Nitrogen-Kali, and Phosphate-Kari two-component systems, Nitrogen-Phosphate-Kali three-component systems Alternatively, it is a granular fertilizer containing elements necessary for the growth of plants such as magnesium, boron and manganese.
本発明で使用する鉱産物粉末としては、タルク、カオリン、珪藻土、活性白土、珪砂、ベントナイト、葉ろう石等が挙げられるが、中でもタルク、カオリン、葉ろう石が好ましい。
この鉱産物粉末の添加量は、通常、粒状肥料に対して約０．１〜５重量％、好ましくは約０．５〜３重量％である。添加量が少な過ぎると固結防止効果が不十分であり、また多過ぎても固結防止効果の著しい向上は望めない。
鉱産物粉末の添加方法は、特に制限されることはなく、常法の手段を用いることが出来る。通常、回転円筒、または回転皿等の装置を用いて粒状肥料を転動さながら、これに鉱産物粉末を添加混合して被覆処理する方法が採られる。
Examples of the mineral product powder used in the present invention include talc, kaolin, diatomaceous earth, activated clay, quartz sand, bentonite, and granite. Among them, talc, kaolin, and granite are preferable.
The amount of mineral powder added is usually about 0.1 to 5% by weight, preferably about 0.5 to 3% by weight, based on the granular fertilizer. If the amount added is too small, the anti-caking effect is insufficient, and if it is too much, a significant improvement in the anti-caking effect cannot be expected.
The method for adding the mineral product powder is not particularly limited, and conventional means can be used. Usually, a method is used in which a mineral fertilizer is added to and mixed with a granular fertilizer while being rolled using an apparatus such as a rotating cylinder or a rotating dish, and then coated.
本発明で使用するポリオール化合物としては、アミノアルコール、アミン等を触媒として用い、プロピレングリコール、トリメチロールプロパン等の脂肪族アルコールとエチレンオキサイドやプロピレンオキサイドとを重付加して得られるポリエーテルポリオール、テトラヒドロフランを重合して得られるポリテトラメチレンエーテルグリコール等のポリエーテル型ポリオール、イサノ油やひまし油等の水酸基を保有する天然油脂や多価アルコールとポリエーテルポリオールとカルボン酸化合物を反応させる等の方法で得られるポリエステル型ポリオール等が挙げられるが、中でもポリエーテルポリオールが好ましい。
ポリオール化合物の添加量は、通常、粒状肥料に対して約０．１〜５重量％、好ましくは約０．５〜３重量％である。添加量が少な過ぎると粉立ち防止効果が不十分であり、また多過ぎても粉立ち防止効果の著しい向上は望めず、経済的に不利となるばかりでなく、肥料成分の低下をも来たす。
ポリオール化合物の添加方法は、特に制限されるものではなく、前記の鉱産物粉末と同様に、常法の手段を用いて行われる。
The polyol compound used in the present invention is a polyether polyol obtained by polyaddition of an aliphatic alcohol such as propylene glycol or trimethylolpropane and ethylene oxide or propylene oxide, using amino alcohol, amine or the like as a catalyst, tetrahydrofuran It is obtained by a method such as reacting a polyether polyol such as polytetramethylene ether glycol obtained by polymerizing natural oil, a natural fat or oil having a hydroxyl group such as Isano oil or castor oil, a polyhydric alcohol, a polyether polyol and a carboxylic acid compound. Polyester polyols and the like that can be used are mentioned, and among them, polyether polyols are preferable.
The amount of the polyol compound added is usually about 0.1 to 5% by weight, preferably about 0.5 to 3% by weight, based on the granular fertilizer. If the added amount is too small, the effect of preventing dusting is insufficient, and if it is too much, a remarkable improvement in dusting prevention effect cannot be expected, which is not only economically disadvantageous but also reduces the fertilizer components.
The method for adding the polyol compound is not particularly limited, and is performed using a conventional method, as in the case of the mineral product powder.
本発明においては、鉱産物粉末とポリオール化合物の添加順序は、同時でも任意の異なった順序でもよく、また添加量が多い場合には分割添加してもよい。
なかでも鉱産物粉末、次いでポリオール化合物の順に添加するのが固結防止効果および粉立ち防止効果の点から好ましい。
この場合には、肥料粒面に添加、被覆処理された鉱産物粉末を、次いで添加されるポリオール化合物が良く捕捉しながら、肥料粒面に添着保持するため、これによって固結の原因である肥料粒子相互間の接触が妨げられる。また、肥料粒面に添加されたポリオール化合物は粘度が前記のトリエチレングリコールに比べて高い、例えば２５℃下における粘度はトリエチレングリコールが約４０センチポイズ、本発明で好ましいものとして挙げたポリエーテルポリオール（スミフェン（登録商標）ＴＭ、住友バイエルウレタン社製品）は約６５０センチポイズであり、これによって肥料粒子表面に添加されたポリエーテルポリオールはトリエチレングリコールに比べて肥料粒子中の空隙内に浸透して行き難くなる結果、長期間に渡ってポリエーテルポリオールが鉱産物粉末を保持し続けることから、固結防止効果および粉立ち防止効果が極めて長期間持続するものと推察される。
In the present invention, the addition order of the mineral product powder and the polyol compound may be simultaneous or arbitrarily different, and may be added in a divided manner when the addition amount is large.
Among these, it is preferable to add the mineral product powder and then the polyol compound in this order from the viewpoints of an anti-caking effect and an anti-dusting effect.
In this case, the mineral powder added and coated on the fertilizer grain surface is adhered and held on the fertilizer grain surface while the polyol compound to be added is well captured, thereby causing the fertilizer that causes caking Contact between particles is prevented. Further, the polyol compound added to the fertilizer grain surface has a higher viscosity than the above-mentioned triethylene glycol, for example, the viscosity at 25 ° C. is about 40 centipoise of triethylene glycol, and the polyether polyol mentioned as preferred in the present invention. (Sumifen (registered trademark) TM, product of Sumitomo Bayer Urethane Co., Ltd.) is about 650 centipoise, and thus the polyether polyol added to the surface of the fertilizer particles penetrates into the voids in the fertilizer particles compared to triethylene glycol. As a result that it becomes difficult to go, the polyether polyol continues to hold the mineral product powder for a long period of time, so it is presumed that the anti-caking effect and the anti-powder effect last for a very long time.
以下に実施例を挙げて本発明をさらに具体的に説明するが、本発明はこれら実施例によって何ら限定されるものではない。なお、実施例中の部および％は特記しない限りすべて重量部および重量百分率を示す。
また、実施例に於いて固結強度および粉立ち量（剥離量）の測定は、以下の方法で行なった。
EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples, but the present invention is not limited to these examples. In addition, unless otherwise indicated, all the parts and% in an Example show a weight part and a weight percentage.
In the examples, the consolidation strength and the amount of dusting (peeling amount) were measured by the following methods.
（Ｉ）固結強度の測定方法：
図１に使用する測定器の断面を示す。内径６ｃｍ、高さ５ｃｍのポリ塩化ビニル製の円筒容器（１）中の中心に、長さ６ｃｍ、直径３ｍｍで、先端が外径６ｍｍで高さ２ｍｍの円錐状のステンレス製フック（２）を立てて、８０ｇの試料（３）を充填し、中心をステンレス製フックが貫通する孔を有する円筒（４）（外径：４．５ｃｍ、内形：５ｍｍ）を円筒容器に挿入し、試料上に置いた。円筒に１０ｋｇの荷重（５）をかけて試料を固めた後、ステンレス製フックおよび試料が入った円筒容器をポリエチレン袋で密封し、温度４０℃、湿度８０％の恒温恒湿槽内で７２時間放置した後、容器中に立てたフックの引き抜き強度（ｋｇ）を測定し、固結強度を求めた（指標として、引き抜き強度０．５ｋｇ以下は殆ど固結していないと見なした）。
（II）粉立ち量（剥離量）の測定方法：
市販の卓上形標準篩い振とう機に、２００ｍｍΦで目開きが２１０μｍ（６０メッシュ）の標準篩いをセットし、この篩いの中に粒状肥料２００ｇを入れ、回転数約２６４ｒｐｍ、タッピング数約１４６回／分の条件下に１０分間篩い分けし、篩われた２１０μｍ以下の粉の量を測定し粉立ち量とした。
(I) Measuring method of consolidation strength:
FIG. 1 shows a cross section of the measuring instrument used. At the center of a cylindrical container (1) made of polyvinyl chloride having an inner diameter of 6 cm and a height of 5 cm, a conical stainless steel hook (2) having a length of 6 cm, a diameter of 3 mm, an outer diameter of 6 mm and a height of 2 mm is provided. Stand up and fill 80 g of sample (3), and insert a cylinder (4) (outer diameter: 4.5 cm, inner shape: 5 mm) with a hole through which a stainless steel hook penetrates into the center into the cylindrical container. Put it on. After the sample was hardened by applying a load (5) of 10 kg to the cylinder, the cylindrical container containing the stainless steel hook and the sample was sealed with a polyethylene bag, and 72 hours in a constant temperature and humidity chamber at a temperature of 40 ° C. and a humidity of 80%. After leaving, the pulling strength (kg) of the hook standing in the container was measured to determine the consolidation strength (as an index, it was considered that the pulling strength of 0.5 kg or less was hardly consolidated).
(II) Measuring method of dusting amount (peeling amount):
Set a standard desktop sieve shaker with a standard screen size of 200 mmΦ and an opening of 210 μm (60 mesh), put 200 g of granular fertilizer into this sieve, rotate at about 264 rpm, tapping number of about 146 times / Sieving for 10 minutes under the conditions of minutes, the amount of sieved powder of 210 μm or less was measured and used as the amount of dust.
実施例１、比較例１
粒径２〜４ｍｍの硫燐安系粒状肥料［肥料成分１３−１３−１３（１３−１３−１３はＮ−Ｐ2Ｏ5−Ｋ2Ｏとしての含量％を示す。）、配合割合：燐酸２アンモン２９．３％、硫安３９．６％、塩化加里２２％、石膏９．１％、含有水分：１．２２％］１ｋｇを皿型造粒機で転動させながらタルク［１４９μｍ（１００メッシュ）パス品］を表１に示す割合で添加し、このものを転動させながら次いでポリエーテルポリオール（スミフェン（登録商標）ＴＭ、住友バイエルウレタン（株）製）を表１に示す割合で添加した。このようにして得た硫燐安系粒状肥料組成物をポリエチレン袋で密封し、次いで温度３０℃、湿度６０％の恒温恒湿槽内で１年間放置した後、各試料について固結強度および粉立ち量を測定した。結果を表１に示す。
Example 1 and Comparative Example 1
Ammonium phosphate granular fertilizer having a particle diameter of 2 to 4 mm [fertilizer component 13-13-13 (13-13-13 indicates the content% as NP 2 O 5 -K 2 O), blending ratio: phosphoric acid 2ammon 29.3%, ammonium sulfate 39.6%, potassium chloride 22%, gypsum 9.1%, water content: 1.22%] While rolling 1kg with a plate granulator, talc [149μm (100 mesh ) Pass product] was added at the ratio shown in Table 1, and then the polyether polyol (Sumiphen (registered trademark) TM, manufactured by Sumitomo Bayer Urethane Co., Ltd.) was added at the ratio shown in Table 1 while rolling the product. . The thus obtained phosphorous sulfate-based granular fertilizer composition is sealed with a polyethylene bag and then left in a constant temperature and humidity chamber at a temperature of 30 ° C. and a humidity of 60% for 1 year. The standing amount was measured. The results are shown in Table 1.
表１より、本発明の鉱産物粉末およびポリオール化合物を添加、被覆処理した粒状肥料組成物は、従来品に比べて極めて優れた固結防止効果および粉立ち防止効果を長期間有することが解る。
From Table 1, it is understood that the granular fertilizer composition to which the mineral product powder and the polyol compound of the present invention are added and coated has a long-lasting anti-caking effect and anti-dusting effect compared to the conventional products.
実施例２、比較例２
粒径２〜４ｍｍの尿素系粒状肥料［肥料成分１８−１８−１８（１８−１８−１８はＮ−Ｐ2Ｏ5−Ｋ2Ｏとしての含量％を示す。）、配合割合：燐酸２アンモン４０％、尿素１６％、ウレアホルム１０％、塩化加里３０％、石膏４％、含有水分：０．７２％］１ｋｇを皿型造粒機で転動させながらカオリン［１４９μｍ（１００メッシュ）パス品］を表２に示す割合で添加し、このものを転動させながら次いでポリエーテルポリオール（スミフェン（登録商標）ＴＭ、住友バイエルウレタン（株）製）を表２に示す割合で添加した。このようにして得た尿素系粒状肥料組成物をポリエチレン袋で密封し、次いで温度３０℃、湿度６０％の恒温恒湿槽内で１年間放置した後、各試料について固結強度および粉立ち量を測定した。結果を表２に示す。
Example 2 and Comparative Example 2
Urea-based granular fertilizer having a particle diameter of 2 to 4 mm [fertilizer component 18-18-18 (18-18-18 indicates the content% as NP 2 O 5 —K 2 O), blending ratio: 2 ammon phosphate 40%, urea 16%, ureaform 10%, potassium chloride 30%, gypsum 4%, moisture content: 0.72%] Kaolin [149 μm (100 mesh) pass product] while rolling 1 kg with a plate granulator Was added at a ratio shown in Table 2, and then polyether polyol (Sumiphen (registered trademark) TM, manufactured by Sumitomo Bayer Urethane Co., Ltd.) was added at a ratio shown in Table 2 while rolling the product. The urea-based granular fertilizer composition thus obtained is sealed with a polyethylene bag and then left for 1 year in a thermostatic chamber at a temperature of 30 ° C. and a humidity of 60%. Was measured. The results are shown in Table 2.
実施例３、比較例３
粒径２〜４ｍｍの硝燐安系粒状肥料［肥料成分１８−８−１８（１８−８−１８はＮ−Ｐ2Ｏ5−Ｋ2Ｏとしての含量％を示す。）、配合割合：燐酸２アンモン１８．５％、硝安４４．４％、硫酸加里３１．３％、石膏５．８％、含有水分：０．７７％］１ｋｇを皿型造粒機で転動させながら葉ろう石（１４９μｍ（１００メッシュ）パス品）を表３に示す割合で添加し、このものを転動させながら次いでポリエーテルポリオール（スミフェン（登録商標）ＴＭ、住友バイエルウレタン（株）製）を表３に示す割合で添加した。このようにして得た硝安系粒状肥料組成物をポリエチレン袋で密封し、次いで温度３０℃、湿度６０％の恒温恒湿槽内で１年間放置した後、各試料について固結強度および粉立ち量を測定した。結果を表３に示す。
Example 3 and Comparative Example 3
Ammonium phosphate granular fertilizer having a particle diameter of 2 to 4 mm [fertilizer component 18-8-18 (18-8-18 indicates the content% as NP 2 O 5 -K 2 O), blending ratio: phosphoric acid 2ammon 18.5%, ammonium sulfate 44.4%, potassium sulfate 31.3%, gypsum 5.8%, water content: 0.77%] 149 μm (100 mesh) pass product) was added at the ratio shown in Table 3, and then the polyether polyol (Sumiphen (registered trademark) TM, manufactured by Sumitomo Bayer Urethane Co., Ltd.) was shown in Table 3 while rolling the product. Added in proportions. The ammonium nitrate granular fertilizer composition thus obtained was sealed with a polyethylene bag, and then allowed to stand in a constant temperature and humidity chamber at a temperature of 30 ° C. and a humidity of 60% for 1 year, and then the consolidation strength and the amount of dusting were measured for each sample. Was measured. The results are shown in Table 3.
１：ポリ塩化ビニル製円筒容器
２：ステンレス製フック
３：試料
４：円筒
５：荷重
1: Polyvinyl chloride cylindrical container 2: Stainless steel hook 3: Sample 4: Cylinder 5: Load
Claims (3)
The granular fertilizer composition according to claim 1, wherein the mineral product is talc, kaolin, or phyllite.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009545507A (en) * | 2006-05-31 | 2009-12-24 | オーエムエス・インヴェストメンツ・インコーポレイティッド | Composition and method for inhibiting solidification in urea-containing fertilizer |
| JP2015528025A (en) * | 2012-05-18 | 2015-09-24 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Dust control aggregate |
| JP2016160106A (en) * | 2015-02-26 | 2016-09-05 | 東レ株式会社 | Granular fertilizer composition and method for producing the same |
| JP2017132659A (en) * | 2016-01-28 | 2017-08-03 | 東レ株式会社 | Granular nitrogen fertilizer, and method for producing the granular nitrogen fertilizer |
| US9944568B2 (en) | 2012-11-16 | 2018-04-17 | Basf Se | Encapsulated fertilizer particle containing pesticide |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238361A (en) * | 1975-09-22 | 1977-03-24 | Ube Industries | Slowly available coated granular fertilizer |
| JPS6037074B2 (en) * | 1978-12-27 | 1985-08-23 | チツソ旭肥料株式会社 | Coated fertilizer and its manufacturing method |
| JPH09132493A (en) * | 1995-11-10 | 1997-05-20 | Asahi Chem Ind Co Ltd | Coated granular fertilizer |
| JP2002249392A (en) * | 2001-02-16 | 2002-09-06 | Chisso Corp | Coated bioactive granule subjected to floating preventive treatment and method for manufacturing the same |
-
2005
- 2005-03-25 JP JP2005088091A patent/JP2006265061A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5238361A (en) * | 1975-09-22 | 1977-03-24 | Ube Industries | Slowly available coated granular fertilizer |
| JPS6037074B2 (en) * | 1978-12-27 | 1985-08-23 | チツソ旭肥料株式会社 | Coated fertilizer and its manufacturing method |
| JPH09132493A (en) * | 1995-11-10 | 1997-05-20 | Asahi Chem Ind Co Ltd | Coated granular fertilizer |
| JP2002249392A (en) * | 2001-02-16 | 2002-09-06 | Chisso Corp | Coated bioactive granule subjected to floating preventive treatment and method for manufacturing the same |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009545507A (en) * | 2006-05-31 | 2009-12-24 | オーエムエス・インヴェストメンツ・インコーポレイティッド | Composition and method for inhibiting solidification in urea-containing fertilizer |
| JP2015528025A (en) * | 2012-05-18 | 2015-09-24 | ビーエーエスエフ ソシエタス・ヨーロピアＢａｓｆ Ｓｅ | Dust control aggregate |
| US9944568B2 (en) | 2012-11-16 | 2018-04-17 | Basf Se | Encapsulated fertilizer particle containing pesticide |
| JP2016160106A (en) * | 2015-02-26 | 2016-09-05 | 東レ株式会社 | Granular fertilizer composition and method for producing the same |
| JP2017132659A (en) * | 2016-01-28 | 2017-08-03 | 東レ株式会社 | Granular nitrogen fertilizer, and method for producing the granular nitrogen fertilizer |
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