JP2013018684A - Method for producing granular potassium chloride - Google Patents
Method for producing granular potassium chloride Download PDFInfo
- Publication number
- JP2013018684A JP2013018684A JP2011154663A JP2011154663A JP2013018684A JP 2013018684 A JP2013018684 A JP 2013018684A JP 2011154663 A JP2011154663 A JP 2011154663A JP 2011154663 A JP2011154663 A JP 2011154663A JP 2013018684 A JP2013018684 A JP 2013018684A
- Authority
- JP
- Japan
- Prior art keywords
- salt
- salted
- binder
- granular
- powdered
- 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.)
- Withdrawn
Links
Images
Abstract
Description
本発明は、粒状塩加の製造方法に関し、特に簡便な製法で肥料として好適に使用することができる粒状塩加の製造方法に関する。
The present invention relates to a method for producing granular salt, and particularly to a method for producing granular salt that can be suitably used as a fertilizer by a simple production method.
粒状塩加の製造方法に関して従来より様々な試みがなされている。例えば、特許文献１には、粉状塩加の造粒において、リン酸アンモニウム及び硫酸を結合剤として用いる方法が開示されている。さらに前記特許文献には、前記結合剤に加えて、吸湿性の改善のために鉱酸鉄を添加する方法が開示されている。 Various attempts have been made in the past regarding methods for producing granular salt. For example, Patent Document 1 discloses a method of using ammonium phosphate and sulfuric acid as a binder in granulation of powdered salt. Furthermore, the patent document discloses a method of adding iron mineral acid in order to improve hygroscopicity in addition to the binder.
また、特許文献２には、水溶性のアルミニウム塩又は鉄塩からなる結合剤を用いて、粒径0.25〜2.0mmの顆粒状塩加同士を結着させて粒状化する塩加の造粒方法が開示されている。
Further, Patent Document 2 discloses a method of granulating a salt by binding granulated salt with a particle size of 0.25 to 2.0 mm using a binder made of a water-soluble aluminum salt or iron salt. Is disclosed.
しかしながら、特許文献１記載の方法は、リン酸アンモニウム及び硫酸等を結合剤として添加するために粒状塩加中のカリウム成分の含有量が低下する問題があった。また、前記方法では、前処理工程として塩加粗砕粒を粉砕して粉状塩加を得て、この粉状塩加を造粒するため、製造効率の点で優れた方法とは言い難かった。さらに、衝撃や擦れ等により粉立ちし易いという問題があった。 However, the method described in Patent Document 1 has a problem that the content of the potassium component in the granular salt is lowered because ammonium phosphate, sulfuric acid, and the like are added as a binder. Moreover, in the said method, since the salted coarse crushed granule was pulverized as a pretreatment step to obtain powdered salted salt, and this powdered salted product was granulated, it was difficult to say that it was an excellent method in terms of production efficiency. . In addition, there is a problem that powdering is likely to occur due to impact or rubbing.
一方、特許文献２記載の方法は、造粒装置内で一旦造粒物ができたとしても、転動式乾燥機を通過させると衝撃により該造粒物がバラバラとなり元の顆粒状塩加の状態に戻るという問題があった。これは、塩加結晶の表面を溶解させて結合剤により塩加結晶同士を結着させようとしても、強固な結着を得ることは困難であることが原因である。 On the other hand, in the method described in Patent Document 2, even if a granulated product is once formed in the granulating apparatus, when the granulated product is passed through a tumbling dryer, the granulated product falls apart by impact, and the original granular salt is added. There was a problem of returning to the state. This is because it is difficult to obtain a strong binding even if the surface of the salted crystals is dissolved and the salted crystals are bound together by a binder.
そこで、本発明者らは粒状塩加を製造する方法において、肥料原料用として流通しているため入手が容易であり、肥料粒として適した粒度を有する塩加粗砕粒を活用する方法を鋭意検討した。その結果、塩加粗砕粒を造粒核とし、これに結合剤を用いて粉状塩加を付着させれば、簡便に丸みを帯びた粒状塩加を効率的に製造することができることを見出し、本発明を完成させるに至った。 Therefore, the inventors of the present invention have made extensive studies on a method for producing granular salted salt, which is easy to obtain because it is distributed as a fertilizer raw material, and that utilizes salted and crushed granule having a particle size suitable as a fertilizer granule. did. As a result, it has been found that if a salted coarse crushed granule is used as a granulation nucleus and a powdered salt is attached thereto using a binder, a rounded granular salt can be easily produced efficiently. The present invention has been completed.
即ち、本発明は以下の通りである。
（１）塩加粗砕粒に粉状塩加を結合剤によって付着させることを特徴とする粒状塩加の製造方法。
（２）塩加粗砕粒の粒径が1.5〜5mmである上記（１）記載の粒状塩加の製造方法。
（３）粉状塩加の粒径が200μm以下である上記（１）又は（２）記載の粒状塩加の製造方法。
（４）粉状塩加100質量部に対して、結合剤（無水換算）の割合が3〜50質量部である上記（１）〜（３）のいずれか１項記載の粒状塩加の製造方法。
（５）塩加粗砕粒100質量部に対して、粉状塩加の割合が5〜80質量部である上記（１）〜（４）のいずれか１項記載の粒状塩加の製造方法。
（６）結合剤が鉱酸鉄である上記（１）〜（５）のいずれか１項記載の粒状塩加の製造方法。
（７）鉱酸鉄が、硫酸第一鉄、硫酸第二鉄、塩化第一鉄及び塩化第二鉄からなる群より選ばれた１種以上である上記（６）記載の粒状塩加の製造方法。
（８）上記（１）〜（７）のいずれか１項記載の製造方法によって製造された粒状塩加。
（９）カリウム成分の含有量がK2Oとして、50質量％以上である上記（８）記載の粒状塩加。
（１０）粒径が2〜4mmである上記（８）又は（９）記載の粒状塩加。
That is, the present invention is as follows.
(1) A method for producing granular salt, which comprises adhering powdered salt to a coarsely crushed salt with a binder.
(2) The method for producing granular salted salt according to (1) above, wherein the particle size of the salted coarse crushed particles is 1.5 to 5 mm.
(3) The method for producing granular salt according to the above (1) or (2), wherein the particle size of the powdered salt is 200 μm or less.
(4) Production of granular salt as described in any one of (1) to (3) above, wherein the proportion of binder (anhydrous basis) is 3 to 50 parts by mass with respect to 100 parts by mass of powdered salt Method.
(5) The manufacturing method of the granular salting of any one of said (1)-(4) whose ratio of a powdered salting is 5-80 mass parts with respect to 100 mass parts of salted coarse granulated grains.
(6) The method for producing granular salt according to any one of (1) to (5) above, wherein the binder is iron mineral acid.
(7) Manufacture of granular salt as described in said (6) whose mineral acid iron is 1 or more types chosen from the group which consists of ferrous sulfate, ferric sulfate, ferrous chloride, and ferric chloride. Method.
(8) Granular salt produced by the production method according to any one of (1) to (7) above.
(9) The granular salt salt according to the above (8), wherein the content of the potassium component is 50% by mass or more as K 2 O.
(10) The granular salting according to the above (8) or (9), wherein the particle diameter is 2 to 4 mm.
本発明の粒状塩加の製造方法は、破砕され適度な粒度に揃えられた塩加粗砕粒を原料とし、これに粉状塩加を結合剤によって付着させるという方法であるため、簡便に粒硬度が高く丸みを帯びた粒を製造することができる。特に、衝撃、擦れ等による粉立ちが少ないのが特徴である。また、粉状塩加の付着のためだけに結合剤を必要とするため、カリウム成分の含有量を高くできるという長所を有する。特に、結合剤として鉱酸鉄を用いた場合は、吸湿し難いという利点がある。 The method for producing granular salt according to the present invention is a method in which a coarsely ground salted granule that is crushed and has an appropriate particle size is used as a raw material, and powdered salt is adhered to this with a binder, so that the grain hardness can be easily obtained. Can produce high and rounded grains. In particular, it is characterized by less dusting due to impact, rubbing and the like. Moreover, since a binder is required only for adhesion of powdery salt, it has the advantage that the content of the potassium component can be increased. In particular, when iron mineral acid is used as a binder, there is an advantage that it is difficult to absorb moisture.
さらに、本発明の粒状塩加は丸みを帯びた粒であるために、他の肥料粒との配合（バルクブレンド）においても好適である。
以上のように、本発明の粒状塩加製造方法の産業的意義は多大である。
Furthermore, since the granular salt of the present invention is a rounded grain, it is also suitable for blending with other fertilizer grains (bulk blend).
As described above, the industrial significance of the granular salt production method of the present invention is great.
以下において、本発明の粒状塩加の製造方法について更に詳細に説明する。
本発明で原料として用いる塩加粗砕粒は、浮遊選鉱法、再結晶法等によって得られた塩化カリウムをロール圧縮した後破砕する方法、または、前記塩化カリウムを溶融後に回転円盤上に流し固化した後破砕する方法もしくは溶融後にコンパクター、ブリケッター等により圧扁化したものを破砕する方法等によって得られたものを、粒の粒度をできるだけ揃えたものである。尚、塩加粗砕粒は上記のように破砕されたものであるため、形状としては角のある多角形の扁平状のものが大部分を占める。
Below, the manufacturing method of the granular salt of this invention is demonstrated still in detail.
The salted coarse granule used as a raw material in the present invention is a method in which potassium chloride obtained by a flotation method, a recrystallization method or the like is roll-compressed and then crushed, or the potassium chloride is melted and poured onto a rotating disk to be solidified. What was obtained by the method of crushing after crushing or the method of crushing what was compacted by a compactor, a briquetter or the like after melting, etc., has the same particle size as possible. In addition, since the salted coarse crushed particles are crushed as described above, the shape is mostly polygonal flat with corners.
塩加粗砕粒の粒度について説明すると、粒度はできるだけ揃っていることが望ましく、必要に応じて篩分けしてもよい。具体的には、塩加粗砕粒として、篩網目1.5mmオーバーであり篩網目5mmアンダーのもの、即ち、概ね1.5〜5mmの範囲の粒径が好ましい。前記粒径の範囲内であれば、造粒後のアンダー品、オーバー品の割合が少なくなるため製造効率が良い。前記粒径の範囲は、2〜4mmの範囲がさらに好ましい。尚、本発明で云うところの粒径とは、市販の篩又は篩用網で設定された目開きによって分級されたものである。 The particle size of the salted coarse crushed granule will be described. It is desirable that the particle size is as uniform as possible, and sieving may be performed as necessary. Specifically, as the salted coarse pulverized granules, those having a sieve mesh over 1.5 mm and a sieve mesh under 5 mm, that is, a particle size in the range of about 1.5 to 5 mm are preferable. If it is in the said particle size range, since the ratio of the under product and the over product after granulation decreases, the production efficiency is good. The range of the particle size is more preferably 2 to 4 mm. In addition, the particle diameter as used in the field of this invention is classified by the opening set with the commercially available sieve or the sieve screen.
本発明で用いる塩加粗砕粒として、カリウム成分が高いものほどより高成分の粒状塩加が得られるため、カリウム成分の含有量が高いものが望ましい。カリウム成分の含有量は、K2Oとして概ね50質量％以上のものが好ましく、より好ましくは58質量％以上である。
また、塩加粗砕粒の粒硬度について云えば、塩加粗砕粒の粒硬度がほぼそのまま最終製品である粒状塩加の粒硬度となるので、粒硬度は高い方が好ましい。粒硬度の目安を示すと、木屋式硬度計で2kgf以上であることが好ましく、より好ましくは4kgf以上である。
As the salted coarse crushed grains used in the present invention, the higher the potassium component, the higher the granular salinity obtained. Therefore, the higher the potassium component content is desirable. The content of the potassium component is preferably approximately 50% by mass or more, more preferably 58% by mass or more, as K 2 O.
Regarding the grain hardness of the salted coarse crushed grains, the grain hardness of the salted crushed coarse grains is almost the same as the grain hardness of the granular salted salt which is the final product, so that the grain hardness is preferably higher. As an indication of the grain hardness, it is preferably 2 kgf or more, more preferably 4 kgf or more with a Kiya-type hardness meter.
次に、粉状塩加の種類としては、赤塩加、白塩加のいずれでも良い。粉状塩加の粒径は、上限が200μm以下であることが好ましい。粒径が200μmを上廻ると、粉同士の接触面積が小さくなることによる粉同士の付着力及び塩加粗砕粒への付着力の低減を招きやすくなる。粒径の下限については、特に限定は無いが、目安として1μmである。粉状塩加は、粉状として流通している塩加を必要に応じて篩分けしたものを用いてもよいし、塩加粗砕粒等を粉砕したものを用いてもよい。また、本発明の製造方法で得られる粒状塩加のアンダー品とオーバー品を粉砕したものを用いても良い。粉砕方法については、肥料原料の粉砕に通常用いられている奈良式粉砕機、ターボミル、ＪＥＴ粉砕機等を例示することができる。 Next, as the kind of powdered salt, either red salt or white salt may be used. The upper limit of the particle size of the powdered salt is preferably 200 μm or less. When the particle size exceeds 200 μm, the contact area between the powders becomes small, and the adhesion force between the powders and the adhesion force to the salted coarse crushed particles tend to be reduced. The lower limit of the particle size is not particularly limited, but is 1 μm as a guide. As the powdered salt, one obtained by sieving the salt distributed as a powder as necessary may be used, or one obtained by pulverizing salted coarse crushed particles or the like may be used. Moreover, you may use what grind | pulverized the granular salt under product and over product obtained with the manufacturing method of this invention. Examples of the pulverization method include Nara type pulverizers, turbo mills, JET pulverizers and the like that are usually used for pulverizing fertilizer raw materials.
本発明では、結合剤によって塩加粗砕粒に粉状塩加を付着させて丸みを帯びた粒を製造する。結合剤としては、鉱酸鉄、リン酸二水素アンモニウム、リン酸水素二アンモニウム、生石灰、消石灰、酸化マグネシウム、水酸化マグネシウム、硫酸マグネシウム、硫酸アルミニウム、リン酸アルミニウム、ポリリン酸ナトリウム、過リン酸石灰、尿素、粘土、ベントナイト、水ガラス、セメント、リン酸、硫酸、デンプン、カルボキシメチルセルロース、ヒドロキシエチルセルロース、ヒドロキシプロピルセルロース、ポリビニルアルコール、ポリアクリル酸ナトリウム、ポリビニルピロリドン、ポリアクリル酸、ポリエチレングリコール、アラビアゴム、糖蜜、ステフェン廃水濃縮液、アルコール醗酵廃液、アルギン酸ナトリウム、グリセリン、ゼラチン、リグニンスルホン酸塩、微結晶セルロース、硫酸マグネシウム、流動パラフィン、酢酸ビニル系樹脂、塩化ビニル系樹脂、アクリル系樹脂、スチレン系樹脂、スチレン−ブタジエン系樹脂、アクリル−スチレン系樹脂、ブタジエン系樹脂、ベンゾグアナミン樹脂、フェノール樹脂、シリコーン樹脂、エポキシ樹脂、ポリカプロラクトン、ポリグリコール酸，ポリ乳酸，ポリ（乳酸・グリコール酸）等を例示することができ、これらのうち１種又は２種以上を選択することができる。 In the present invention, a rounded grain is produced by adhering powdered salt to a salted coarse crushed grain with a binder. As binders, mineral iron, ammonium dihydrogen phosphate, diammonium hydrogen phosphate, quicklime, slaked lime, magnesium oxide, magnesium hydroxide, magnesium sulfate, aluminum sulfate, aluminum phosphate, sodium polyphosphate, lime superphosphate , Urea, clay, bentonite, water glass, cement, phosphoric acid, sulfuric acid, starch, carboxymethylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, polyvinyl alcohol, sodium polyacrylate, polyvinylpyrrolidone, polyacrylic acid, polyethylene glycol, gum arabic, Molasses, stefen wastewater concentrate, alcohol fermentation wastewater, sodium alginate, glycerin, gelatin, lignin sulfonate, microcrystalline cellulose, magnesium sulfate, liquid paraffin Vinyl acetate resin, vinyl chloride resin, acrylic resin, styrene resin, styrene-butadiene resin, acrylic-styrene resin, butadiene resin, benzoguanamine resin, phenol resin, silicone resin, epoxy resin, polycaprolactone, poly Examples include glycolic acid, polylactic acid, poly (lactic acid / glycolic acid), and one or more of these can be selected.
結合剤の添加割合は、粉状塩加100質量部に対して、無水換算の結合剤として3〜50質量部であることが好ましい。結合剤の前記添加割合が3質量部を下廻ると、塩加粗砕粒に粉状塩加が十分に付着しなくなる傾向があるとともに、衝撃、擦れ等により粉状塩加が剥がれ易くなる。一方、結合剤の前記添加割合が50質量部を上廻っても、添加量に見合う効果が得られ難いため経済的でない。尚、前記割合のより好ましい範囲は、4〜30質量部である。 It is preferable that the addition ratio of a binder is 3-50 mass parts as a binder of anhydrous conversion with respect to 100 mass parts of powder salt. When the addition ratio of the binder is less than 3 parts by mass, the powdered salt tends not to be sufficiently adhered to the salted and crushed granule, and the powdered salt is easily peeled off due to impact, rubbing or the like. On the other hand, even if the addition ratio of the binder exceeds 50 parts by mass, it is difficult to obtain an effect commensurate with the addition amount, which is not economical. In addition, the more preferable range of the said ratio is 4-30 mass parts.
本発明においては、好ましい結合剤として鉱酸鉄が挙げられる。結合剤として鉱酸鉄を用いると、製品である粒状塩加が吸湿し難くなるという利点がある。鉱酸鉄の例として、硫酸第一鉄、硫酸第二鉄、塩化第一鉄、塩化第二鉄等が挙げられ、これらのうち１種又は２種以上を選択することができる。鉱酸鉄は、粉体または水溶液のいずれであっても構わない。粉体の鉱酸鉄としては、粉状であれば特に粒度に制限はないが、上限は200μm以下の粒径であることが好ましく、下限については特に限定は無いが目安として1μmである。鉱酸鉄を粉砕するときは、上記粉状塩加の粉砕方法を適用することができる。水溶液の鉱酸鉄としては、粉体の鉱酸鉄を水に溶解させたもの、及び、市販の硫酸第二鉄液、塩化第二鉄液等を例示できる。また、鉄鋼材を酸で洗浄した際に発生する副産液も使用することができる。 In the present invention, iron oxide is a preferred binder. When iron mineral acid is used as the binder, there is an advantage that the granular salinity as a product is difficult to absorb moisture. Examples of mineral acid iron include ferrous sulfate, ferric sulfate, ferrous chloride, ferric chloride, and the like, and one or more of these can be selected. The mineral acid iron may be either a powder or an aqueous solution. The powder mineral iron oxide is not particularly limited as long as it is in powder form, but the upper limit is preferably 200 μm or less, and the lower limit is not particularly limited, but is 1 μm as a guide. When pulverizing mineral acid iron, the above-mentioned pulverization method of powdered salt can be applied. Examples of the mineral iron oxide in aqueous solution include powdered mineral iron dissolved in water, commercially available ferric sulfate solution, ferric chloride solution, and the like. Further, a by-product liquid generated when the steel material is washed with an acid can also be used.
塩加粗砕粒に対して付着させる粉状塩加の割合は、製品である粒状塩加が丸みを帯びる程度に付着していれば特に制限はないが、目安として塩加粗砕粒100質量部に対して粉状塩加の割合が5〜80質量部である。前記割合が5質量部を下廻ると、丸みの帯び方が不十分となる場合がある。一方、前記割合が80質量部を上廻っても、添加量に見合う効果が得られ難い。尚、前記割合のより好ましい範囲は、10〜60質量部であり、さらに好ましくは15〜45質量部である。 The ratio of the powdered salt added to the salted coarse crushed particles is not particularly limited as long as the granular salted product is attached to the extent that it is rounded. The proportion of powdered salt is 5 to 80 parts by mass. If the ratio is less than 5 parts by mass, the rounding may be insufficient. On the other hand, even if the ratio exceeds 80 parts by mass, it is difficult to obtain an effect commensurate with the amount added. In addition, the more preferable range of the said ratio is 10-60 mass parts, More preferably, it is 15-45 mass parts.
本発明の粒状塩加の製造方法は、塩加粗砕粒に対し粉状塩加を結合剤によって付着させて、丸みを帯びた粒を製造することができれば特に制限はないが、造粒装置として転動造粒機を用いる方法が本発明において好適である。転動造粒機は、粉体の造粒において球状粒の製造に適した造粒機として広く一般に用いられており、パン型造粒機、ドラム造粒機等を例示することができる。 The method for producing granular salt of the present invention is not particularly limited as long as it can produce rounded particles by attaching powdered salt to the coarsely crushed granules with a binder. A method using a rolling granulator is suitable in the present invention. The rolling granulator is widely used as a granulator suitable for producing spherical particles in powder granulation, and examples thereof include a bread granulator and a drum granulator.
転動造粒機を用いた製造方法を例示すると、転動造粒機内で転動した状態の塩加粗砕粒と粉状塩加に対して、結合剤を溶解させた水溶液又は溶液状の結合剤を噴霧又は滴下で添加して、塩加粗砕粒に粉状塩加を付着させる方法が挙げられる。前記場合において、塩加粗砕粒、粉状塩加及び結合剤は、必要に応じて加熱したものを用いてもよい。塩加粗砕粒と粉状塩加は熱風、蒸気等により直接加熱させてもよく、造粒装置をヒーター、熱風、蒸気等により加温した状態のところに、塩加粗砕粒と粉状塩加を投入し、所定時間転動させながら加熱してもよい。また、前記結合剤は、必要に応じて加熱したものを用いてもよく、結合剤の種類に応じて適宜加熱温度を設定すればよい。 An example of a production method using a tumbling granulator is an aqueous solution or a solution-like bond in which a binder is dissolved with respect to salted coarse crushed granules and powdered salted salt in a state of rolling in the tumbling granulator The method of adding an agent by spraying or dripping and adhering powdery salt to the salted coarse crushed granule is mentioned. In the above-mentioned case, the heated coarsely crushed granule, the powdered salted salt, and the binder may be heated as necessary. The salted coarse crushed granule and powdered salted salt may be directly heated with hot air, steam, etc., and the salted coarse crushed granule and powdered salted salt are in a state where the granulator is heated with a heater, hot air, steam, etc. And may be heated while rolling for a predetermined time. Moreover, what was heated as needed may be used for the said binder, and what is necessary is just to set heating temperature suitably according to the kind of binder.
一方、前記製造方法において粉状の結合剤を用いる場合は、造粒機内で転動した状態の塩加粗砕粒、粉状塩加及び結合剤に対して、水を噴霧又は滴下で添加して、塩加粗砕粒に粉状塩加を付着させればよい。塩加粗砕粒、粉状塩加及び結合剤は、上記のように必要に応じて加熱してもよい。水は、粉状の結合剤を溶解させて粉状塩加が塩加粗砕粒に付着するように添加すれば特に制限はなく、適量を添加すればよい。水単独でもあるいは水に加えて蒸気を投入してもよく、水に代えて温水又は熱水を用いてもよい。また、粉状の結合剤と粉状塩加は予め混合しておいてもよいし、別々に造粒機内に投入した後転動により混合させてもよいが、水の添加前に粉状の結合剤と粉状塩加が充分に混合されていることが好ましい。 On the other hand, when a powdery binder is used in the production method, water is added by spraying or dropwise addition to the salted coarsely crushed granule, the powdered salted salt and the binder in a state of rolling in the granulator. What is necessary is just to make powdery salt adhere to salted coarse crushed granule. The salted coarse granulated powder, powdered salted salt and binder may be heated as necessary as described above. Water is not particularly limited as long as it is added so that the powdery binder is dissolved and the powdered salt is adhered to the salted coarsely crushed granules, and an appropriate amount may be added. Water alone or steam may be added in addition to water, and hot water or hot water may be used instead of water. In addition, the powdery binder and the powdered salt may be mixed in advance, or may be mixed by rolling after being put into the granulator separately. It is preferable that the binder and the powdered salt are sufficiently mixed.
次いで、得られた粒状物の乾燥に関しては、特に装置を選ばないが、粒状物同士の付着防止や乾燥効率の点から、転動熱風乾燥機が好ましい。乾燥温度に関しては、８０〜１５０℃が好ましい。
乾燥後の粒状物はそのまま製品としてもよいが、一般的には篩分けしたものを製品とすることが好ましい。
Next, regarding the drying of the obtained granular material, an apparatus is not particularly selected, but a rolling hot air dryer is preferable from the viewpoint of prevention of adhesion between the granular materials and drying efficiency. The drying temperature is preferably 80 to 150 ° C.
The dried granular material may be used as a product as it is, but generally it is preferable to use a sieved product.
次に、上記製造方法によって製造された本発明の粒状塩加について説明する。粒状塩加中に含有されるカリウム成分量は、原料に用いる塩加粗砕粒と粉状塩加のカリウム成分量、さらに結合剤の添加量に影響されるが、特に粒状塩加中に占める割合が高い塩加粗砕粒のカリウム成分量に強く影響される。従って、本発明の粒状塩加のカリウム成分量としてはK2Oとして50質量％以上であることが好ましい。尚、前記カリウム成分量の上限の目安を示すと、62質量％である。
また、本発明の粒状塩加の粒径の範囲について云えば、用途に応じて適宜設定すればよいが、好ましい粒径は2〜4mmの範囲である。前記粒径の範囲のときに、他の肥料との配合（バルクブレンド）において好適である。
Next, the granular salinity of this invention manufactured by the said manufacturing method is demonstrated. The amount of potassium component contained in the granular salt is affected by the amount of potassium salt in the salted coarse granule and powdered salt used in the raw material, and the amount of binder added, but the proportion of the amount in the granular salt is particularly important It is strongly influenced by the amount of potassium components in high-salt crushed granules. Accordingly, the amount of the potassium component of the granular salt of the present invention is preferably 50% by mass or more as K 2 O. In addition, it is 62 mass% when the standard of the upper limit of the said potassium component amount is shown.
Further, the range of the particle size of the granular salt of the present invention may be appropriately set according to the use, but the preferable particle size is in the range of 2 to 4 mm. When the particle size is in the above range, it is suitable for blending with other fertilizers (bulk blend).
本発明の粒状塩加は、配合肥料用には勿論、単肥用にも適したものである。また、粉立ちし難いため機械施肥にも適したものである。 The granular salt of the present invention is suitable not only for blended fertilizer but also for single fertilizer. Moreover, it is suitable for mechanical fertilization because it is difficult to powder.
以下、本発明の詳細を実施例を挙げて説明するが、本発明はそれらの実施例によって限定されるものではない。尚、特に断らない限り％は全て質量％を示す。
［塩加粗砕粒］
塩加粗砕粒として、肥料原料用として入手したカリウム成分の含有量がK2Oとして60.5％のものを用いた。これを篩網目2.0mmと4.0mmにて篩い分けし、粒径2.0〜4.0mmのものを実施例において用いた。塩加粗砕粒の形状を図１（Ａ）に示した。塩加粗砕粒の下記測定方法による平均粒硬度は、4.4kgfであった。
［粉状塩加］
粉状塩加として、奈良式粉砕機で200μm以下に粉砕した赤塩加(カリウム成分の含有量がK2Oとして61.0質量％)を用いた。
EXAMPLES Hereinafter, although an Example is given and the detail of this invention is demonstrated, this invention is not limited by those Examples. In addition, unless otherwise indicated, all% shows the mass%.
[Salted coarse crushed grains]
As the salted coarse crushed grains, those having a potassium component content of 60.5% as K 2 O used for fertilizer raw materials were used. This was sieved with a sieve mesh of 2.0 mm and 4.0 mm, and those having a particle size of 2.0 to 4.0 mm were used in the examples. The shape of the salted coarse granule is shown in FIG. The average grain hardness of the salted coarse crushed grains by the following measuring method was 4.4 kgf.
[Powdered salt]
As the powdered salt, red salt (the potassium component content was 61.0% by mass as K 2 O) crushed to 200 μm or less with a Nara type pulverizer was used.
［平均粒硬度の測定方法］
木屋式硬度計を用いた。測定は各20粒を対象に行い、その平均値を平均粒硬度とした。
［落下粉化量の測定方法］
200×300mmの大きさのポリエチレン袋に試料1kgを入れシールした。これを1.5mの高さから自然落下によりコンクリート床に衝突させた。前記落下操作は20回行ったが、毎回異なる面が衝突するようにして最終的には袋全面が衝突面となるようにした。落下操作終了後に、目開き1.4mmの篩を通過した量を測定し、落下粉化量とした。
[Measurement method of average grain hardness]
A Kiyama hardness tester was used. The measurement was performed on 20 grains each, and the average value was defined as the average grain hardness.
[Measurement method of amount of falling powder]
A 1 kg sample was placed in a 200 × 300 mm polyethylene bag and sealed. This was collided with a concrete floor by natural fall from a height of 1.5m. Although the dropping operation was performed 20 times, different surfaces collided each time so that the entire bag surface eventually became a collision surface. After the dropping operation, the amount passing through a sieve having a mesh size of 1.4 mm was measured and used as the amount of falling powder.
［実施例１］
結合剤として粉状硫酸第一鉄一水和物（富士チタン工業(株)製）を用いた。粉状塩加1.60kgと粉状硫酸第一鉄一水和物0.40kgを予め混合したもの、及び、塩加粗砕粒5.00kgをパン型造粒機（容器寸法：960mmφ×200mm）に投入し、20rpmの回転速度で回転させた。そこへ、水0.40kgを少量ずつ噴霧し、5分間かけ転動造粒を行った。
次いで、造粒物を100〜110℃の転動熱風乾燥機にて30分間乾燥した。冷却後３段振動スクリーン（篩目開き：4.0mm、2.0mm。近畿工業製）で篩分けしたところ、製品（粒径2.0〜4.0mm）の収率は74％であった。製品の平均粒硬度は7.6kgfであった。製品のカリウム成分の含有量の分析値は、K2Oとして58.9％であった。また、落下粉化量は3gであった。製品の形状を図１（Ｂ）に示した。
[Example 1]
Powdered ferrous sulfate monohydrate (manufactured by Fuji Titanium Industry Co., Ltd.) was used as a binder. A mixture of 1.60 kg of powdered salt and 0.40 kg of powdered ferrous sulfate monohydrate and 5.00 kg of salted coarse crushed granules are put into a bread granulator (container size: 960 mmφ × 200 mm). And rotated at a rotation speed of 20 rpm. There, 0.40 kg of water was sprayed little by little, and rolling granulation was performed for 5 minutes.
Next, the granulated product was dried for 30 minutes in a rolling hot air dryer at 100 to 110 ° C. After cooling and sieving with a three-stage vibrating screen (mesh opening: 4.0 mm, 2.0 mm, manufactured by Kinki Kogyo Co., Ltd.), the yield of the product (particle size 2.0 to 4.0 mm) was 74%. The average grain hardness of the product was 7.6 kgf. The analytical value of the potassium component content of the product was 58.9% as K 2 O. Moreover, the amount of falling powder was 3g. The shape of the product is shown in FIG.
［実施例２〜６］
表１の原料組成で実施例１と同様に製造した。
[Examples 2 to 6]
The raw material composition shown in Table 1 was produced in the same manner as in Example 1.
［実施例７］
結合剤として、リン酸水素二アンモニウム（肥料原料用を200μm以下に粉砕したもの）0.40kgを用いた以外は実施例１と同様に製造した。
[Example 7]
Production was carried out in the same manner as in Example 1 except that 0.40 kg of diammonium hydrogen phosphate (fertilizer raw material ground to 200 μm or less) was used as a binder.
［実施例８］
結合剤として、アルファー化デンプン（三和澱粉工業(株)製 三和コーンアルファーＹ）0.40kgを用いた以外は実施例１と同様に製造した。
[Example 8]
This was produced in the same manner as in Example 1 except that 0.40 kg of pregelatinized starch (Sanwa Corn Alpha Y manufactured by Sanwa Starch Co., Ltd.) was used as the binder.
［実施例９］
結合剤として、粉状硫酸第一鉄一水和物（富士チタン工業(株)製）0.15kgを水0.35kgに溶解し硫酸第一鉄水溶液を調製した。粉状塩加1.35kgと塩加粗砕粒5.00kgをパン型造粒機に投入し、硫酸第一鉄水溶液全量を少量ずつ噴霧した以外は、実施例１と同様に製造した。尚、表１には、硫酸第一鉄水溶液としてではなく、粉状硫酸第一鉄一水和物及び水としての量を記載した。
[Example 9]
As a binder, 0.15 kg of powdered ferrous sulfate monohydrate (Fuji Titanium Industry Co., Ltd.) was dissolved in 0.35 kg of water to prepare a ferrous sulfate aqueous solution. Production was carried out in the same manner as in Example 1 except that 1.35 kg of powdered salt and 5.00 kg of salted coarse crushed granules were put into a bread granulator and the whole amount of ferrous sulfate aqueous solution was sprayed little by little. Table 1 shows the amounts of powdered ferrous sulfate monohydrate and water, not as an aqueous ferrous sulfate solution.
［比較例１］
塩加粗砕粒を用いずに、予め混合した粉状塩加6.30kgと粉状硫酸第一鉄（富士チタン工業(株)製）0.70kgをパン型造粒機に投入した以外は実施例１と同様に製造した。製品（粒径2.0〜4.0mm）の収率は16％であったが、そのほとんどが粒径2.0〜2.5mmであった。また、平均粒硬度は1.0kgfと低く、落下粉化量が53gと多かった。
[Comparative Example 1]
Example 1 except that 6.30 kg of powdered salted salt and 0.70 kg of powdered ferrous sulfate (manufactured by Fuji Titanium Industry Co., Ltd.) were added to a bread granulator without using salted coarse granulated particles. Manufactured in the same manner. The yield of the product (particle size 2.0-4.0 mm) was 16%, most of which was particle size 2.0-2.5 mm. Moreover, the average grain hardness was as low as 1.0 kgf and the amount of falling powder was as large as 53 g.
［比較例２］
結合剤は無添加とし、粉状塩加2.00kgと塩加粗砕粒5.00kgをパン型造粒機に投入した以外は実施例１と同様に製造した。落下粉化量が45gと多かった。
[Comparative Example 2]
It was produced in the same manner as in Example 1 except that no binder was added and 2.00 kg of powdered salt and 5.00 kg of salted coarsely pulverized granules were charged into a bread granulator. The amount of falling powder was as high as 45g.
［比較例３］
塩加粗砕粒に代えて、顆粒状塩加（粒径0.25〜2.0mm）5.00kgを用いた以外は実施例１と同様に製造した。製品（粒径2.0〜4.0mm）の収率は18％であったが、その全てが粒径2.0〜2.5mmであった。また、平均粒硬度は2.0kgfと低かった。
[Comparative Example 3]
It was produced in the same manner as in Example 1 except that 5.00 kg of granular salt (particle size: 0.25 to 2.0 mm) was used in place of the salted coarse crushed granule. The product (particle size 2.0-4.0 mm) yield was 18%, all of which had a particle size of 2.0-2.5 mm. The average grain hardness was as low as 2.0 kgf.
上記実施例及び比較例の製品について、収率、平均粒硬度、落下粉化量、カリウム成分の含有量の分析値（K2O含有量）を表２に示した。
Table 2 shows analytical values (K 2 O content) of yield, average grain hardness, falling powder amount, and potassium component content for the products of the above Examples and Comparative Examples.
以上実施例より、本発明の方法によれば、丸みを帯びた高硬度の粒状塩加を高収率で簡便に製造できることが分かった。 From the above examples, it was found that according to the method of the present invention, a rounded high hardness granular salt can be easily produced in a high yield.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011154663A JP2013018684A (en) | 2011-07-13 | 2011-07-13 | Method for producing granular potassium chloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011154663A JP2013018684A (en) | 2011-07-13 | 2011-07-13 | Method for producing granular potassium chloride |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2013018684A true JP2013018684A (en) | 2013-01-31 |
Family
ID=47690505
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2011154663A Withdrawn JP2013018684A (en) | 2011-07-13 | 2011-07-13 | Method for producing granular potassium chloride |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2013018684A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017051177A (en) * | 2015-09-07 | 2017-03-16 | 住友化学株式会社 | Coated rice seed and method for producing the same |
| JP2017051178A (en) * | 2015-09-07 | 2017-03-16 | 住友化学株式会社 | Coated rice seed and method for producing the same |
-
2011
- 2011-07-13 JP JP2011154663A patent/JP2013018684A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017051177A (en) * | 2015-09-07 | 2017-03-16 | 住友化学株式会社 | Coated rice seed and method for producing the same |
| JP2017051178A (en) * | 2015-09-07 | 2017-03-16 | 住友化学株式会社 | Coated rice seed and method for producing the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103011959B (en) | Adhesive for granular fertilizer and preparation method for adhesive | |
| CN103011958B (en) | A kind of composite fertilizer and production method containing highly effective binder | |
| CN103694055B (en) | Organic-inorganic compound mixed fertilizer granulation compound binding agent and preparation method and application | |
| AU2015327467A1 (en) | Method for the production of sulphate of potash granulates, sulphate of potash granulate obtained thereby, and use thereof | |
| CN110913980A (en) | Mixture of granular polyhalite and potash and production process thereof | |
| CN104150793A (en) | Geopolymer-based steel slag dry-mixed mortar binder | |
| BR102018003628A2 (en) | granular fertilizers comprising macronutrients and micronutrients, and processes for their manufacture | |
| WO2022222355A1 (en) | Calcium magnesium phosphate fertilizer granulating agent and application thereof | |
| AU2017203167A1 (en) | Granular fertilizer and soil conditioning formulations | |
| JP2013018684A (en) | Method for producing granular potassium chloride | |
| JP6290642B2 (en) | Powdered steelmaking slag fertilizer | |
| CN104449747A (en) | Silicon-magnesium powder and soil conditioner containing same as well as preparation technology and application of soil conditioner | |
| JPH04243992A (en) | Fused compound fertilizer | |
| KR910009598B1 (en) | Granular potassium sulfate and its production | |
| JP3485140B2 (en) | Silicate fertilizer or silicic acid fertilizer mixed single fertilizer | |
| JP2007014954A (en) | Method for granulating highly dehydrated lime cake | |
| CN111712321A (en) | Potassium dust pelletizing process | |
| CN102690143A (en) | Method for producing granular potassium chloride | |
| JP6006654B2 (en) | Method for producing siliceous fertilizer | |
| WO2023044845A1 (en) | Easily disintegrated calcium magnesium phosphate fertilizer and preparation method therefor | |
| JP5131890B2 (en) | Production method of granular sulfur | |
| CA3035682C (en) | Procedure for the manufacture of potassium chloride granulate using an alkali metal carbonate and a hyrdogen phosphate | |
| CN102327732B (en) | Chlorine-free drying agent for spherical mineral | |
| JP2017132659A (en) | Granular nitrogen fertilizer, and method for producing the granular nitrogen fertilizer | |
| JP2019172561A (en) | Granular fertilizer and method of producing granular fertilizer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20141007 |