JPS598683A - Pelletization drying method for potassium silicate fertilizer intermediate - Google Patents
Pelletization drying method for potassium silicate fertilizer intermediateInfo
- Publication number
- JPS598683A JPS598683A JP11399182A JP11399182A JPS598683A JP S598683 A JPS598683 A JP S598683A JP 11399182 A JP11399182 A JP 11399182A JP 11399182 A JP11399182 A JP 11399182A JP S598683 A JPS598683 A JP S598683A
- Authority
- JP
- Japan
- Prior art keywords
- slurry
- granules
- dry
- raw material
- dryer
- 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.)
- Granted
Links
- 239000003337 fertilizer Substances 0.000 title claims description 7
- 238000001035 drying Methods 0.000 title claims description 3
- 239000004111 Potassium silicate Substances 0.000 title description 4
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 title description 4
- 235000019353 potassium silicate Nutrition 0.000 title description 4
- 229910052913 potassium silicate Inorganic materials 0.000 title description 4
- 238000005453 pelletization Methods 0.000 title 1
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 26
- 239000002002 slurry Substances 0.000 claims description 23
- 239000010881 fly ash Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 15
- 239000007864 aqueous solution Substances 0.000 claims description 13
- 239000008187 granular material Substances 0.000 claims description 13
- 239000000843 powder Substances 0.000 claims description 13
- 239000002994 raw material Substances 0.000 claims description 11
- 239000003245 coal Substances 0.000 claims description 9
- 229910000514 dolomite Inorganic materials 0.000 claims description 9
- 239000010459 dolomite Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 5
- 238000010304 firing Methods 0.000 description 7
- 239000011777 magnesium Substances 0.000 description 7
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 6
- 229910052749 magnesium Inorganic materials 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 3
- 239000000460 chlorine Substances 0.000 description 3
- 229910052801 chlorine Inorganic materials 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
- 239000000347 magnesium hydroxide Substances 0.000 description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 101100002917 Caenorhabditis elegans ash-2 gene Proteins 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229940072033 potash Drugs 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Drying Of Solid Materials (AREA)
- Fertilizers (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
本発明は、フライアッシュｌを原料とづる１−ｔ ′Ｍ
カリ肥判を製造するに際しく、焼成炉に供給する中間体
の造粒乾燥方法に関づる。[Detailed description of the invention] The present invention provides 1-t'M using fly ash as a raw material.
The present invention relates to a method for granulating and drying an intermediate to be supplied to a kiln when producing potash paste.
周知の如く、フライアッシュは、火力発電所等の微粉炭
燃焼炉から発生する廃ガス中に浮遊して廃ガスと共に、
排出され、主として電気集塵機で捕集される微粉である
。このフライアッシュは、二酸化珪素を主成分とづるも
のであって、化学的には比較的安定な物質であるが、前
）ホの様に微粉であることからこれにカリウム塩を加え
て焼成炉で６００〜１１００℃で焼成すると、カリウム
とフライアッシュ中の珪素とが反応してクエン酸溶解性
のＴ３酸カリウムとなって、珪酸カリ肥料どして利用で
きることが知られている。As is well known, fly ash is suspended in the waste gas generated from pulverized coal combustion furnaces such as thermal power plants, and together with the waste gas,
It is a fine powder that is discharged and mainly collected by an electrostatic precipitator. This fly ash is mainly composed of silicon dioxide, and is a relatively stable substance chemically, but since it is a fine powder as shown in (e) above, potassium salt is added to it and it is heated in a kiln furnace. It is known that when fired at 600 to 1100°C, potassium reacts with silicon in fly ash to form potassium T3 acid soluble in citric acid, which can be used as potassium silicate fertilizer.
フライアッシュとカリウム塩との混合物を焼成する場合
、混合物は、粉状体であるよりも適当な粒度の粒状体で
ある方が取り扱い易く、かつ焼成効率が高いものひあり
、しかも混合物を粒状体にすると製品である珪酸カリ肥
料も肥料として扱い易いものとなる。。When firing a mixture of fly ash and potassium salt, it is easier to handle the mixture in the form of granules of an appropriate particle size than in the form of powder, and the firing efficiency is higher. This makes the potassium silicate fertilizer product easier to handle as fertilizer. .
カリウム塩どしては、通常、水酸化カリウム（ＫＯＨ）
が用いられ、原わ１として用いられるものは安価に入手
できる濃度４８％程度の水溶液である。従ってこれをフ
ライアッシュと混合すると、混合物はスラリーどなり、
これを焼成炉に投入するには、イれに先だって乾燥させ
る必要があり、同時に前述の点から乾燥物を粒状体にす
る必要がある。Potassium salts are usually potassium hydroxide (KOH).
The material used as raw material 1 is an aqueous solution with a concentration of about 48% that is available at low cost. Therefore, when this is mixed with fly ash, the mixture turns into a slurry;
In order to put this into a firing furnace, it is necessary to dry it prior to burning, and at the same time, from the above-mentioned point, it is necessary to turn the dried material into granules.
どころで、珪酸カリ肥料を製造するには、前述のフライ
アッシュ及び水酸化カリウム水溶液に加えるに、燃料と
しての微粉状石炭と肥料として要求されるマグネジコウ
ム源とを加えて混合してスラリーとなし、これを造粒し
次いで乾燥して焼成炉に供給し、焼成炉で焼成して製品
を得る。However, in order to produce potassium silicate fertilizer, in addition to the fly ash and potassium hydroxide aqueous solution mentioned above, pulverized coal as a fuel and a magnesium source required as a fertilizer are added and mixed to form a slurry. is granulated, then dried and supplied to a firing furnace, where it is fired to obtain a product.
現在、一般に使用しているマグネシュウム源は海水より
４！ｔられた水酸化マグネシュウム（Ｍｇ（０１−１）
ｚ ）−ｅあり、この水酸化マグネジコウムには塩素
（Ｃ１，＞が含まれており、焼成時がそれが塩化物とな
り熱交換器等に詰り、プラント運転上大きな問題となっ
ていた。そこで、本発明者らは、種々の実験の結果、マ
グネシュウム源として水酸化ングネシ１ウムの代わりに
塩素を実質上含んでいないド［１マイｌ−（：Ｉ成分Ｃ
ａ ＣＯｓ ・Ｍ ０ＣＯ３、ＭＯ０１８％、ＣＲ０
％）を使用づることにより熱交換器等の詰りの問題を解
消し４４することを見出した。Currently, the magnesium source commonly used is seawater! Magnesium hydroxide (Mg(01-1)
z)-e, this magnesium hydroxide contains chlorine (C1,>), which turns into chloride during firing and clogs heat exchangers, etc., causing a major problem in plant operation. As a result of various experiments, the present inventors have found that hydrogen hydroxide can be replaced with magnesium hydroxide as a magnesium source by using hydrogen hydroxide as a magnesium source.
a COs ・M 0CO3, MO018%, CR0
%) was found to solve the problem of clogging of heat exchangers, etc.44.
しかしながら、ドロマイトでマグネジコウムの必要量を
配合すると、スラリー水分が１７％程亀と高１１度とな
り、スラリー系配管弁の詰りの危険性が高いという新た
イ５問題が生じることが判明した。そこで、アルコール
廃液を２〜３％添加り−るとスラリー性状は良くなるが
、アルコール廃液１Ｊは約３％の塩素が混入しているた
め、ドロマイ１〜代替指向には逆向となることが判明し
た。However, it has been found that when the required amount of magnesium is mixed with dolomite, the slurry moisture becomes about 17% and the temperature rises to 11 degrees Celsius, creating a new problem of high risk of clogging of slurry system piping valves. Therefore, it was found that adding 2 to 3% of alcohol waste liquid improves the slurry properties, but since 1J of alcohol waste liquid contains approximately 3% chlorine, it was found to be against the idea of replacing Dolomay 1. did.
本発明者らは、鋭意研究の結果、ドロマイ１〜を分篩過
程において生じる所定粒径以下のり゛リイクル粒ないし
粉に混入することにより、スラリー水分を１９％以上に
確保できて、スラリー系配管弁の詰りの危険を防止し得
ることを見出した。As a result of intensive research, the present inventors have found that by mixing Dolomay 1~ into recycle grains or powder with a predetermined particle size or less generated during the sieving process, it is possible to secure slurry moisture at 19% or more, and to improve slurry system piping. It has been found that the risk of valve clogging can be prevented.
又、本発明ににればフライアッシュと水酸化ノノリウム
水溶液それに燃＃１となる微粉状石炭との混合には、混
合効率のよい振動式混合機を用い、又それ等の混合物か
らなるスラリーとドロマイトを混入したリリ゛イクル粒
ないし粉とによる粒状物の造粒には、造粒効率のよい振
動式造粒機を用いる。In addition, according to the present invention, a vibrating mixer with good mixing efficiency is used to mix fly ash, nonolium hydroxide aqueous solution, and pulverized coal as fuel #1, and a slurry consisting of a mixture thereof is used. A vibrating granulator with high granulation efficiency is used to granulate granules with recycled granules or powder mixed with dolomite.
以下、図面を参照し本発明を実施した実施例につぎ説明
りる。Embodiments of the present invention will be described below with reference to the drawings.
図面はそのノ［Ｉ−シートを示し、１ないし４は貯槽で
あって、それぞれフライアッシュ１、微粉状石炭２、水
酸化カリウム水溶液（４８％水溶液）３、及びド【］マ
イ１〜４が貯溜されているゎフライアッシュ１、微粉状
石炭２、及び水酸化カリウム水溶液３を所定の割合に計
量して混合１１１５に供給し、混合機５で混合してスラ
リーとなず。混合機５としては振動式混合機を用いて均
一なスラリーを効率Ｊζく得るようにする。The drawing shows the [I-sheet], and 1 to 4 are storage tanks in which fly ash 1, pulverized coal 2, potassium hydroxide aqueous solution (48% aqueous solution) 3, and dome 1 to 4 are respectively stored. The stored fly ash 1, pulverized coal 2, and potassium hydroxide aqueous solution 3 are measured in predetermined proportions and supplied to a mixing 1115, and mixed in a mixer 5 to form a slurry. As the mixer 5, a vibratory mixer is used to obtain a uniform slurry with high efficiency.
スラリー成分の一例として、フライアッシュ９４ｇ、微
粉状石炭１６ｇ、水酸化カリウム水溶液（４８％水溶液
）６．５．６ｉＪの割合とすることによりスラリー水分
は１９．４％と４にり、スラリー輸送の際のスラリー系
配管弁等の詰りの問題は生じない。As an example of slurry components, by setting the ratio of 94 g of fly ash, 16 g of pulverized coal, and 6.5.6 iJ of potassium hydroxide aqueous solution (48% aqueous solution), the slurry moisture becomes 19.4%, which is 4. There is no problem of clogging of slurry system piping valves, etc.
＝５−
かかるスラリー原料をスラリータンク（３に送り、次い
でスラリーポンプ７により造粒機８に供給し、詳細を後
述するドロマイトを混入したりリイクル粒／ｉいし粉と
で粒状物に造粒して乾燥機９に供給する。造粒１１Ｂと
しては撮動式造粒機を用いて効率よく粒状物を得るよう
にする。=5- The slurry raw material is sent to a slurry tank (3), and then supplied to a granulator 8 by a slurry pump 7, where it is mixed with dolomite (details of which will be described later) or is granulated with recycled grains/i-I powder. The granules are then supplied to the dryer 9. A photographing type granulator is used as the granulator 11B to efficiently obtain granules.
造粒ｍＢで造粒１）た粒状物は乾燥１１９に供給して乾
燥し乾晶原料となし、例えばリフトコンベ丸７１０にに
り振動篩１１に供給する。乾燥機９の熱源としては後述
の焼成炉の廃熱を利用づるようにする。このため図では
省略されているが複数台の熱交換器が使用されている。The granulated material granulated in granulation mB (1) is supplied to a dryer 119 to be dried and used as a dry crystal raw material, for example, transferred to a lift conveyor round 710 and supplied to a vibrating sieve 11. As a heat source for the dryer 9, waste heat from a kiln, which will be described later, is used. For this reason, although not shown in the figure, multiple heat exchangers are used.
振動篩１１で所定粒径部」二のもの、所定粒径内のもの
、及び所定粒径以下のものとに篩分けし、所定粒径内の
ものは適正乾品原判、寸なわち焼成炉への中間体として
焼成炉１４に供給し、焼成炉１４で例えば９５０℃で約
３０分間焼成して製品Ｍを得る。所定粒径以上のものは
粉砕機１２に供給して粉砕し、所定粒径以下のものと共
にリリイクル粒ないし粉としてリサイクルタンク１３に
送−〇−
る。The vibrating sieve 11 is used to sieve into particles with a predetermined particle size, particles with a predetermined particle size, and particles with a predetermined particle size or less. It is supplied to the firing furnace 14 as an intermediate to the furnace, and fired in the firing furnace 14 at, for example, 950° C. for about 30 minutes to obtain the product M. Those particles having a predetermined particle size or more are supplied to a crusher 12 and crushed, and sent to a recycling tank 13 as recycle particles or powder together with particles having a predetermined particle size or less.
一方、貯槽４よりドロマイトを所定の割合に計１してリ
リーイクル粒ないし粉に混入し、前述の造粒機８に供給
り゛る。ド［１マイ１〜の石はフライアッシュ、微粉状
？ｉ炭及び水酸化カリウム水溶液の前述の割合に対しで
１４．４ｇとする。なＪ３、リサイクル粒ないし粉が不
足する場合には、適正乾品原１１の一部をリリイクルさ
ける。On the other hand, dolomite is added to a predetermined ratio from the storage tank 4 and mixed into the pellets or powder, and then supplied to the granulator 8 described above. Do [1 My 1 ~ stone is fly ash, fine powder? Based on the above-mentioned ratio of i-charcoal and potassium hydroxide aqueous solution, the amount is 14.4 g. J3, if there is a shortage of recycled grains or powder, avoid recycling a part of the appropriate dry product raw material 11.
下記の態様により実験を行った。Experiments were conducted in the following manner.
原料配合
フライアッシュ １９０ｋｇ／バッチ石
疾 ４０ ｋｇ／バッチ水酸化カリウム
２０ｋＯ／バツチ＋ １１５ｋｇ（４８％水
溶液） 混合タンクドロマイ１〜
３３ ｋＭバッチスラリー水分１９．２％
第２図に本実験における各原料の実測値を示し、図にお
いて２１はフライアッシュ、微粉状石炭、水酸化カリウ
ム水溶液よりなるスラリーのタンク、２２はドロマイし
・のタンク、２３は振動式混合機、２４は振動式造粒機
、２５は乾燥機、２６（よ振動篩、２７はリサイクル粒
タンク、２８は乾品原判ホッパへのラインを示す。Raw material blend fly ash 190kg/batch stone
40 kg/batch Potassium hydroxide 20 kO/batch + 115 kg (48% aqueous solution) Mixing tank Dolomy 1~
33 kM batch slurry water content 19.2% Figure 2 shows the measured values of each raw material in this experiment. 23 is a vibrating mixer, 24 is a vibrating granulator, 25 is a dryer, 26 is a vibrating sieve, 27 is a recycled grain tank, and 28 is a line to a dry product original hopper.
スラリー（３６５ｋｇ ） ニトロマイト（３３ｋＱ
）＝ １００： ！１
理論Ｊ＠ １８６．５ｋｇ／ｈｒ： １Ｇ、８ｋｏ／ｈ
ｒ実測値１８（ｉ、５に！］ ／ ｈｒ ： １７．５
ｋ（］／ Ｍ−） （１７，５） ／（ｔ６，８） −
１，０４
実験では理論値の１．０４倍のドロマイトが添加された
。１９られた焼成品の分析結果は、１＜２０２１％、ｔ
ｖｌｏ０２．３％で従来方法による場合と比べ全く遜色
のない製品が得られた。Slurry (365kg) Nitromite (33kQ
) = 100: ! 1 Theory J @ 186.5kg/hr: 1G, 8ko/h
r Actual value 18 (i, to 5!) / hr: 17.5
k(]/M-) (17,5)/(t6,8)-
1.04 In the experiment, 1.04 times the theoretical amount of dolomite was added. The analysis results of the fired products were 1<2021%, t
A product with a vlo of 02.3% was obtained that was completely comparable to that obtained by the conventional method.
以上説明したにうに本発明によれば、ポンプ輸送される
スラリーの水分は１９％以１であって、スラリー系配管
弁等の詰りの危険性はなく、又マグネジコウム源として
実質上塩素を含ｌυでいないドロマイトを使用している
ので、塩化物による熱交換器等の詰りの問題を生じない
。更にフライアッシュ、微粉状石炭、及び水酸化カリウ
ム水溶液の混合には振動式混合機を使用しているので、
’Ａｔ率Ｊ： ＜ ｉ見合を行うことができ、また、ス
ラリーとリサイクル粒ない（）粉とによる粒状物の造粒
には振動式造粒機を使用しているので、効率よく粒状物
に造粒１することができる。そして得られる製品は従来
７′ｊ法にＪ、る場合と全く遜色ないものである。As explained above, according to the present invention, the water content of the pumped slurry is 19% or more, so there is no risk of clogging of slurry system piping valves, etc., and it contains substantially chlorine as a source of magnesium. Since it uses dolomite, which is not made of chloride, there is no problem of clogging of heat exchangers etc. due to chloride. Furthermore, a vibrating mixer is used to mix fly ash, pulverized coal, and potassium hydroxide aqueous solution.
'At rate J: Granulation 1 can be carried out. The product obtained is completely comparable to that obtained using the conventional 7'j method.
第１図は本発明の方法を実施したフローシー１〜である
。第２図は本発明に従い実験を行った際の物流状態を示
Ｊ゛図である。
１・・・フライアッシュの貯槽 ２・・・微粉状石炭
の貯槽 ３・・・水酸化）Ｊリウム水溶液の貯槽
４・・・ドロマイトの貯槽 ５・・・振動式混合ｎ
６・・・スラリータンク８・・・振動式造粒機 ９
・・・乾燥機１０・・・リフト＝■ンベヤ １１・・
・振動篩１２・・・粉砕機 １３・・・リサイクル粉
タンク １４・・・焼成炉
９−FIG. 1 shows flow sheets 1 to 1 in which the method of the present invention was implemented. FIG. 2 is a diagram showing the logistics state when an experiment was conducted according to the present invention. 1...Storage tank for fly ash 2...Storage tank for pulverized coal 3...Storage tank for J-lium (hydroxide) aqueous solution
4... Dolomite storage tank 5... Vibratory mixing n
6... Slurry tank 8... Vibrating granulator 9
...Dryer 10...Lift = ■Nveyor 11...
・Vibration sieve 12...Crusher 13...Recycle powder tank 14...Kiln furnace 9-
Claims (1)
とを所定の割合に計量して振動式混合機に供給し、振動
式混合機で混合したスラリーを振動式造粒機に供給し、
振動式造粒機で造粒した粒状物を乾燥する乾燥機からの
乾量原料のうち所定粒径以下のり（プーイクル粒ないし
リサイクル粉にドロマイトを所定の割合で計量して混入
し、ドロマイトを混入したりサーイクル粒ないしリサイ
クル粉を前記振動式造粒機に供給して前記スラリーとで
乾燥機に供給づる粒状物を造粒し、乾燥機で乾燥した乾
品原ｒ１のつち所定粒径内のものを焼成炉で焼成する乾
量原料とすることを特徴とする珪酸力り肥料の中間体の
造粒乾燥方法。Fly ash, pulverized coal, and potassium hydroxide aqueous solution are measured at predetermined ratios and supplied to a vibratory mixer, and the slurry mixed with the vibratory mixer is supplied to a vibratory granulator,
Dry the granules granulated with a vibrating granulator.Dry the dry raw materials from the dryer with a predetermined particle size or less (Puikle granules or recycled powder mixed with dolomite at a predetermined ratio; dolomite is mixed in. The recycled granules or recycled powder are fed to the vibrating granulator, and the slurry is used to granulate the granules to be fed to the dryer, and the dried raw material R1 dried in the dryer is dried with a predetermined particle size. 1. A method for granulating and drying an intermediate for silicate-strengthened fertilizer, characterized in that the dry raw material is used as a dry raw material to be fired in a kiln.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11399182A JPS598683A (en) | 1982-07-02 | 1982-07-02 | Pelletization drying method for potassium silicate fertilizer intermediate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11399182A JPS598683A (en) | 1982-07-02 | 1982-07-02 | Pelletization drying method for potassium silicate fertilizer intermediate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS598683A true JPS598683A (en) | 1984-01-17 |
| JPH0244794B2 JPH0244794B2 (en) | 1990-10-05 |
Family
ID=14626316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11399182A Granted JPS598683A (en) | 1982-07-02 | 1982-07-02 | Pelletization drying method for potassium silicate fertilizer intermediate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS598683A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259608A3 (en) * | 1986-09-04 | 1988-10-05 | Gfr Ges Aufbereit Reststoff | Fertilizer and method for producing the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627544U (en) * | 1979-08-09 | 1981-03-14 | ||
| JPS5858140A (en) * | 1981-10-05 | 1983-04-06 | Denpatsu Furaiatsushiyu Kk | Method for granulating and drying intermediate of potassium silicate fertilizer |
-
1982
- 1982-07-02 JP JP11399182A patent/JPS598683A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5627544U (en) * | 1979-08-09 | 1981-03-14 | ||
| JPS5858140A (en) * | 1981-10-05 | 1983-04-06 | Denpatsu Furaiatsushiyu Kk | Method for granulating and drying intermediate of potassium silicate fertilizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0259608A3 (en) * | 1986-09-04 | 1988-10-05 | Gfr Ges Aufbereit Reststoff | Fertilizer and method for producing the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0244794B2 (en) | 1990-10-05 |
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