JPS6339551B2 - - Google Patents
Info
- Publication number
- JPS6339551B2 JPS6339551B2 JP15108780A JP15108780A JPS6339551B2 JP S6339551 B2 JPS6339551 B2 JP S6339551B2 JP 15108780 A JP15108780 A JP 15108780A JP 15108780 A JP15108780 A JP 15108780A JP S6339551 B2 JPS6339551 B2 JP S6339551B2
- Authority
- JP
- Japan
- Prior art keywords
- potassium
- fertilizer
- water
- soluble
- granulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000003337 fertilizer Substances 0.000 claims description 40
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 28
- 239000011591 potassium Substances 0.000 claims description 28
- 229910052700 potassium Inorganic materials 0.000 claims description 28
- 239000004111 Potassium silicate Substances 0.000 claims description 17
- 235000019353 potassium silicate Nutrition 0.000 claims description 17
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 17
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 17
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 15
- 239000005696 Diammonium phosphate Substances 0.000 claims description 13
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 13
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 13
- 238000004519 manufacturing process Methods 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 9
- 239000011707 mineral Substances 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 6
- 239000000618 nitrogen fertilizer Substances 0.000 claims description 2
- 239000002686 phosphate fertilizer Substances 0.000 claims 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 9
- 235000010755 mineral Nutrition 0.000 description 8
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- 230000007928 solubilization Effects 0.000 description 6
- 238000005063 solubilization Methods 0.000 description 6
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 5
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 5
- 235000011130 ammonium sulphate Nutrition 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 238000004458 analytical method Methods 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 239000001103 potassium chloride Substances 0.000 description 3
- 235000011164 potassium chloride Nutrition 0.000 description 3
- 239000002426 superphosphate Substances 0.000 description 3
- 239000004254 Ammonium phosphate Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 229910000148 ammonium phosphate Inorganic materials 0.000 description 2
- 235000019289 ammonium phosphates Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- -1 (IBDu) Chemical compound 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- QFHMNFAUXJAINK-UHFFFAOYSA-N [1-(carbamoylamino)-2-methylpropyl]urea Chemical compound NC(=O)NC(C(C)C)NC(N)=O QFHMNFAUXJAINK-UHFFFAOYSA-N 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 235000013877 carbamide Nutrition 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004889 fertilizer analysis Methods 0.000 description 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 1
- 239000000347 magnesium hydroxide Substances 0.000 description 1
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000009938 salting Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
Description
本発明は拘溶性加里を含む化成肥料の製造法に
関するものである。特に本発明はけい酸加里肥料
を原料とする化成肥料の製造法に関するものであ
る。
最近、石炭火力発電所等で発生する微粉炭燃焼
灰の有効利用法として、炭酸カリウム又は水酸化
カリウム並びに微粉炭燃焼灰及び水酸化マグネシ
ウムを混合して焼成し、緩効性のけい酸加里肥料
を製造することが行われるようになつた。このも
のは、分析結果によれば、拘溶性加里20〜22％、
拘溶性苦土３〜４％、可溶性けい酸25〜33％含
み、PH10以上を示す塩基性肥料である。
本発明はこのけい酸加里肥料を原料として化成
肥料を製造する方法に関するものである。
種々の肥料成分を粉末状、スラリー状又は水溶
液として造粒機に供給し、水の存在下にて造粒し
て粒状の化成肥料を製造する方法は広く行われて
いる。しかしながらけい酸加里肥料を原料として
用いる場合には、これがPH10以上の塩基性物質で
あるため、これにアンモニアを含有する硫酸アン
モニウム、塩化アンモニウム等を配合すると、製
造工程及び保管中においてアンモニアが発生し、
種々の障害をもたらす。また生成する化成肥料も
塩基性であるため、施肥時に皮膚等の保護などの
注意が必要である。これらの問題を回避するに
は、化成肥料製造時にけい酸加里肥料の塩基性を
中和しなくてはならない。しかし中和剤として硫
酸、燐酸等の鉱酸を用いると、けい酸加里肥料中
の拘溶性加里が水溶性加里に変化してしまうの
で、緩効性加里を含む化成肥料を製造する目的か
らは不利である。
本発明者らは、けい酸加里肥料を鉱酸で中和す
るに際し加里が水溶性加里に変化するのを抑制す
る方法について検討した結果、燐酸二アンモニウ
ムの存在下にけい酸加里肥料を鉱酸で中和すれば
良いことを見出した。
本発明はこのような知見に基づくもので、けい
酸加里肥料を含む加里肥料、窒素肥料および燐酸
肥料を造粒機に供給し、鉱酸を添加して造粒する
化成肥料の製造法において、原料の一部として燐
酸二アンモニウムを使用することを特徴とする拘
溶性加里を含む化成肥料の製造法に存する。
本発明について詳細に説明すれば、本発明では
けい酸加里肥料と燐酸二アンモニウムに、所望に
より、尿素、硫酸アンモニウム、塩化アンモニウ
ム、燐酸−アンモニウム、過燐酸石灰、塩化加
里、硫酸加理等の肥料成分を配合して造粒機に供
給し、燐酸または硫酸等の鉱酸を添加して、常法
により造粒する。燐酸二アンモニウムの配合量が
多い程、拘溶性加里から水溶性加里への変化を阻
止する効果は大きい。また鉱酸の添加量は、得ら
れる化成肥料のPHが5.5〜7.5の範囲となるように
設定することが望ましい。鉱酸の添加量が不足す
るとけい酸加里肥料の中和が不充分となり、アン
モニアの発生や経時変化による粉化、塩基性であ
ることに起因する障害の発生等の問題を起こすお
それがある。逆に鉱酸の添加量が多すぎると、燐
酸二アンモニウムが共存していても加里の水溶化
が大きくなると共に、アルミナの溶出が起こる。
本発明方法では、上述のけい酸加里肥料、燐酸
二アンモニウムおよび鉱酸以外に、所望により、
種々の肥料、肥料原料その他を用いることができ
る。特に燐酸二アンモニウムに尿素または尿素−
アルデヒド縮合物を併用すると、加里の水溶化抑
制効果が一段と大きくなる。
また、けい酸加里肥料、燐酸二アンモニウムお
よび燐酸に、尿素−アルデヒド縮合物、硫酸アン
モニウム、過燐酸石灰および塩化加里等を配合す
ると、窒素、加里共に緩効性、速効性を兼ね備え
た製品とすることができると共に、燐酸も一部拘
溶性に還元され、土壤固定を受けにくい形態の燐
酸をも含有した製品とすることができる。なお、
本明細書において燐酸二アンモニウムとは、純粋
の燐酸二アンモニウムの外に、肥料用として市販
されているＮ／PO4（モル比）が1.5以上のいわゆ
る燐酸二アンモニウムをも意味する。
本発明方法における造粒は、回転円筒型造粒機
や回転円盤型造粒機等を用いて常法により行うこ
とができる。造粒機から排出された粒は乾燥した
のち篩別し、所定の粒径のものは製品として取得
し、それ以外は必要ならば適宜粉砕して造粒機に
供給する。
本発明によれば、けい酸加里肥料中の加里の水
溶化を抑制しつつ中和ができると共に、水中で崩
壊し難い、硬い粒状肥料を容易に製造することが
できる。
次に実施例により本発明を更に具体的に説明す
るが、本発明はその要旨を超えない限り、以下の
実施例に限定されるものではない。
実施例 １
直径30cmの回転円盤型造粒機に、表−１に示す
量のけい酸加里肥料および肥料用として市販され
ている燐酸二アンモニウム（燐二安）をそれぞれ
粉末状で仕込み、これに表−１に示す量の30％−
P2O5燐酸または70％硫酸と適当量の水を噴霧し
ながら、60回転／分で15分間造粒を行つた。造粒
品は70℃で２時間乾燥したのち粉砕し、肥料公定
分析法に従い、PH、拘溶性加里、水溶性加里を分
析し、加里の水溶化率を下式に従い計算した。
水溶化率＝（We／Ce−Ｗ／Ｃ）／（１−Ｗ／Ｃ）
×100（％）
We；製品中の水溶性加里分析値
Ce； 〃 拘溶性加里 〃
Ｗ；けい酸加里中の水溶性加里分析値
Ｃ； 〃 拘溶性加里 〃
The present invention relates to a method for producing a chemical fertilizer containing soluble potassium. In particular, the present invention relates to a method for producing a chemical fertilizer using potassium silicate fertilizer as a raw material. Recently, as an effective way to use pulverized coal combustion ash generated at coal-fired power plants, etc., potassium carbonate or potassium hydroxide, pulverized coal combustion ash and magnesium hydroxide are mixed and fired to produce a slow-release potassium silicate fertilizer. began to be manufactured. According to the analysis results, this substance has 20-22% of soluble potassium.
It is a basic fertilizer containing 3 to 4% soluble magnesia and 25 to 33% soluble silicic acid, and exhibits a pH of 10 or higher. The present invention relates to a method for producing a chemical fertilizer using this potassium silicate fertilizer as a raw material. BACKGROUND ART A widely used method is to supply various fertilizer components in the form of powder, slurry, or aqueous solution to a granulator and granulate them in the presence of water to produce granular chemical fertilizers. However, when potassium silicate fertilizer is used as a raw material, it is a basic substance with a pH of 10 or higher, so if ammonium sulfate, ammonium chloride, etc. containing ammonia are mixed with it, ammonia will be generated during the manufacturing process and storage.
It causes various obstacles. Furthermore, since the chemical fertilizer produced is basic, care must be taken to protect the skin, etc. when fertilizing. To avoid these problems, the basicity of potassium silicate fertilizer must be neutralized during the production of chemical fertilizers. However, if a mineral acid such as sulfuric acid or phosphoric acid is used as a neutralizing agent, the soluble potassium in potassium silicate fertilizer will change to water-soluble potassium. It is disadvantageous. The present inventors investigated a method for suppressing the conversion of potassium into water-soluble potassium when neutralizing potassium silicate fertilizer with mineral acid. I discovered that it is best to neutralize it with The present invention is based on such findings, and includes a method for producing a chemical fertilizer in which potassium fertilizer including potassium silicate fertilizer, nitrogen fertilizer, and phosphoric acid fertilizer are supplied to a granulator, and mineral acid is added and granulated. A method for producing a chemical fertilizer containing soluble potassium, characterized by using diammonium phosphate as part of the raw material. To explain the present invention in detail, in the present invention, fertilizer ingredients such as urea, ammonium sulfate, ammonium chloride, ammonium phosphate, lime superphosphate, potassium chloride, and sulfuric acid are added to potassium silicate fertilizer and diammonium phosphate, if desired. are blended and supplied to a granulator, a mineral acid such as phosphoric acid or sulfuric acid is added, and granulation is performed by a conventional method. The larger the amount of diammonium phosphate added, the greater the effect of inhibiting the change from restrictively soluble potassium to water-soluble potassium. Further, the amount of mineral acid added is desirably set so that the pH of the resulting chemical fertilizer is in the range of 5.5 to 7.5. If the amount of mineral acid added is insufficient, the potassium silicate fertilizer will not be neutralized sufficiently, which may cause problems such as generation of ammonia, powdering due to changes over time, and problems due to basicity. On the other hand, if the amount of mineral acid added is too large, the water solubility of potassium increases and alumina elutes even if diammonium phosphate is present. In the method of the present invention, in addition to the above-mentioned potassium silicate fertilizer, diammonium phosphate, and mineral acid, if desired,
Various fertilizers, fertilizer raw materials, etc. can be used. Especially diammonium phosphate with urea or urea-
When an aldehyde condensate is used in combination, the effect of suppressing the water solubilization of potassium becomes even greater. In addition, by blending urea-aldehyde condensate, ammonium sulfate, lime superphosphate, potassium chloride, etc. with potassium silicate fertilizer, diammonium phosphate, and phosphoric acid, a product that has both slow-release and quick-release properties for both nitrogen and potassium can be obtained. At the same time, a part of the phosphoric acid is reduced to be soluble, making it possible to produce a product containing phosphoric acid in a form that is less susceptible to soil fixation. In addition,
In this specification, diammonium phosphate refers not only to pure diammonium phosphate, but also to so-called diammonium phosphate having an N/PO 4 (molar ratio) of 1.5 or more, which is commercially available for use in fertilizers. Granulation in the method of the present invention can be carried out by a conventional method using a rotating cylindrical granulator, a rotating disk granulator, or the like. The granules discharged from the granulator are dried and then sieved, and those of a predetermined particle size are obtained as a product, and the others are crushed as necessary and supplied to the granulator. According to the present invention, it is possible to neutralize potassium in a potassium silicate fertilizer while suppressing water solubilization, and to easily produce a hard granular fertilizer that does not easily disintegrate in water. Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to the following Examples unless it exceeds the gist thereof. Example 1 Potassium silicate fertilizer and diammonium phosphate (dian phosphorus), which is commercially available for fertilizer, were charged in powder form into a rotating disk-type granulator with a diameter of 30 cm, and the amounts shown in Table 1 were charged. 30% of the amount shown in Table-1
Granulation was carried out at 60 rpm for 15 minutes while spraying P 2 O 5 phosphoric acid or 70% sulfuric acid and appropriate amount of water. The granulated product was dried at 70° C. for 2 hours, then pulverized, and analyzed for pH, restricted soluble potassium, and water-soluble potassium according to the official fertilizer analysis method, and the water solubilization rate of potassium was calculated according to the following formula. Water solubilization rate = (We/Ce-W/C)/(1-W/C)
×100 (%) We; Analysis value of water-soluble potassium in the product Ce; 〃 Restricted soluble potassium 〃 W; Analysis value of water-soluble potassium in silicate potassium C;
【表】【table】
【表】
実施例 ２
直径30cmの回転円盤型造粒機に、表−２に示す
量のイソブチリデンジウレア、（IBDu）、尿素、
硫酸アンモニウム（硫安）、燐酸二アンモニウム
（燐二安）、燐酸−アンモニウム（燐一安）、過燐
酸石灰（過石）、けい酸加里肥料、塩化加里（塩
加）、硫酸加里（硫加）を仕込み、これに表−２
に示す量の70％硫酸または30％−P2O5湿式燐酸
を適宜量の水で希釈して噴霧しながら、60回転／
分で15分間造粒を行つた。造粒品は70℃で２時間
乾燥後、粒径２−４mmのものを製品として取得し
た。製品の一部を粉砕し、実施例１と同様にして
PHの測定と加里の分析を行い、下式により加里の
水溶化率を算出した。また製品の一部を100mlの
蒸留水を入れた100ml容ガラスビーカーの底に１
層となるように投入し、一夜放置後の状態を観察
して水中崩壊性を調べた。
水溶化率＝（We／Ce−Ｗ／Ｃ）／（１−Ｗ／Ｃ）
×100（％）
Ｗ＝W1X＋W2Y
Ｃ＝C1X＋C2Y
We、Ce；実施例１に同じ
W1；けい酸加里中の水溶性加里分析値
C1； 〃 〃 拘溶性加里 〃
Ｘ； 〃 の仕込量
W2；塩加又は硫加中の水溶性加里分析値
C2； 〃 〃 〃〃 拘溶性加里 〃
Ｙ； 〃 〃 〃 の仕込量[Table] Example 2 Into a rotating disk type granulator with a diameter of 30 cm, isobutylidene diurea, (IBDu), urea,
Contains ammonium sulfate (ammonium sulfate), diammonium phosphate (dian phosphoric acid), ammonium phosphate (ammonium phosphoric acid), lime superphosphate (superstone), potassium silicate fertilizer, potassium chloride (salt addition), and potassium sulfate (sulfurization). , and Table-2
While spraying the amount of 70% sulfuric acid or 30 % -P2O5 wet phosphoric acid diluted with an appropriate amount of water, rotate at 60 rpm.
Granulation was carried out for 15 minutes. After drying the granulated product at 70°C for 2 hours, a product with a particle size of 2 to 4 mm was obtained. A part of the product was crushed and treated in the same manner as in Example 1.
PH was measured and potassium was analyzed, and the water solubilization rate of potassium was calculated using the following formula. Add a portion of the product to the bottom of a 100ml glass beaker containing 100ml of distilled water.
The disintegration properties in water were examined by adding the mixture in layers and observing the condition after leaving it overnight. Water solubilization rate = (We/Ce-W/C)/(1-W/C)
×100 (%) W=W 1 X+W 2 Y C=C 1 X+C 2 Y We, Ce; Same as Example 1 W 1 ; Analysis value of water-soluble potassium in potassium silicate C 1 ; X; Amount of preparation W 2 ; Analytical value of water-soluble potassium during salting or curing C 2 ; Restricted soluble potassium Y; Amount of preparation of 〃 〃 〃
【表】【table】
Claims (1)
よび燐酸肥料を造粒機に供給し、鉱酸を添加して
造粒する化成肥料の製造法において、原料の一部
として燐酸二アンモニウムを使用することを特徴
とする拘溶性加里を含む化成肥料の製造法。 ２ 特許請求の範囲第１項記載の化成肥料の製造
法において、生成した化成肥料の一部を造粒機に
供給することを特徴とする方法。[Claims] 1. A method for producing a chemical fertilizer in which potassium fertilizer, nitrogen fertilizer, and phosphate fertilizer including potassium silicate fertilizer are supplied to a granulator, and mineral acid is added and granulated, as part of the raw materials. A method for producing a chemical fertilizer containing soluble potassium, characterized by using diammonium phosphate. 2. A method for producing a chemical fertilizer according to claim 1, characterized in that a part of the produced chemical fertilizer is supplied to a granulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15108780A JPS5777086A (en) | 1980-10-28 | 1980-10-28 | Manufacture of chemical fertilizer containing citric acid-soluble potassium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15108780A JPS5777086A (en) | 1980-10-28 | 1980-10-28 | Manufacture of chemical fertilizer containing citric acid-soluble potassium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5777086A JPS5777086A (en) | 1982-05-14 |
| JPS6339551B2 true JPS6339551B2 (en) | 1988-08-05 |
Family
ID=15511034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15108780A Granted JPS5777086A (en) | 1980-10-28 | 1980-10-28 | Manufacture of chemical fertilizer containing citric acid-soluble potassium |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5777086A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165027A (en) * | 1981-04-06 | 1982-10-09 | Toyo Soda Mfg Co Ltd | Method for granulating basic fertilizer |
| JPS57179092A (en) * | 1981-04-24 | 1982-11-04 | Kiyuushiyuu Kagaku Kogyo Kk | Slow-release composite fertilizer and manufacture |
-
1980
- 1980-10-28 JP JP15108780A patent/JPS5777086A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5777086A (en) | 1982-05-14 |
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