JPH0251871B2 - - Google Patents
Info
- Publication number
- JPH0251871B2 JPH0251871B2 JP58203260A JP20326083A JPH0251871B2 JP H0251871 B2 JPH0251871 B2 JP H0251871B2 JP 58203260 A JP58203260 A JP 58203260A JP 20326083 A JP20326083 A JP 20326083A JP H0251871 B2 JPH0251871 B2 JP H0251871B2
- Authority
- JP
- Japan
- Prior art keywords
- powdered
- calcium carbonate
- granules
- roll
- magnesia
- 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 - Lifetime
Links
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 30
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 20
- 239000000395 magnesium oxide Substances 0.000 claims description 15
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 10
- 239000008187 granular material Substances 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 9
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000011230 binding agent Substances 0.000 claims description 4
- 238000004898 kneading Methods 0.000 claims description 2
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 3
- 235000012204 lemonade/lime carbonate Nutrition 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 235000013379 molasses Nutrition 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000011419 magnesium lime Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Landscapes
- Glanulating (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Fertilizers (AREA)
Description
【発明の詳細な説明】
本発明は粉状の苦土石灰、炭酸カルシウムを粒
状化するのに好適な方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method suitable for granulating powdered magnesia and calcium carbonate.
一般に粉状の苦土石灰および炭酸カルシウム
は、付着性、凝集性を有していて流動性が悪いた
め、散布機で田畑に散布して肥料として使用しよ
うとしても円滑に散布すことができず、しかも、
無理に散布しても、風で散逸したり、飛散して作
業者に降り懸かつたり、散布後に雨水で流失する
などの不都合があつた。そのため、従来は、粉状
の苦土石灰、炭酸カルシウムを、転動造粒法や押
出し造粒法で粒状化することが試みられている
が、これらの造粒法では、できた粒状品が取扱い
に耐え得る強度を有するように結合剤を10％以上
も添加する必要があり、しかも、その粒状品は、
強固になりすぎて散布後の崩壊性が悪く、肥料と
しての効率が低下するなどの問題があつた。 Generally, powdered magnesia lime and calcium carbonate have adhesive and cohesive properties and poor fluidity, so even if you try to use it as fertilizer by spreading it on fields with a spreader, it will not be possible to spread it smoothly. ,Moreover,
Even if sprayed forcibly, there were inconveniences such as it being blown away by the wind, scattering and landing on workers, or being washed away by rainwater after being sprayed. Therefore, in the past, attempts have been made to granulate powdered magnesia lime and calcium carbonate by rolling granulation method or extrusion granulation method, but with these granulation methods, the resulting granules are It is necessary to add a binder of 10% or more to ensure that the product has the strength to withstand handling, and the granular product
There were problems such as it becoming too strong and having poor disintegration after spraying, reducing its efficiency as a fertilizer.
本発明は上記の問題を解消するためになされた
もので、粉状の苦土石灰、炭酸カルシウムを、そ
の取扱いに耐え得る強度を有するとともに水を被
ぶれば24時間以内に崩壊する粒状物に成型するこ
とができる粉状苦土石灰・粉状炭酸カルシウムの
造粒方法を提供することを目的とする。 The present invention was made to solve the above problems, and it converts powdered magnesia lime and calcium carbonate into granular materials that are strong enough to withstand handling and that disintegrate within 24 hours when exposed to water. The object of the present invention is to provide a method for granulating powdered magnesia lime and powdered calcium carbonate that can be molded.
以下、本発明の実施例について図面に基づき詳
細に説明する。図示する装置はいわゆる回転ロー
ル式ブリケツテイングマシンであつて、基台１上
に設置された支持部材２には、直径150mm、幅240
mmの円柱状を成すとともに表面に直径4.8mm、深
さ1.2mmの凹部を多数備えた２本のロール３，４
が所要の間隔をおき左右に並ぶとともに垂直面内
で回転可能にされて装着されている。そして、一
方のロール４はシリンダ５により他方のロール３
に向けて押されるようになつている。また、ロー
ル３，４間の直上方には漏斗状のホツパ６が固定
配設され、該ホツパ６内には、外形が逆円錘状の
スクリユー７が設けられており、該スクリユー７
はモータ８により回転されるようになつている。
９は基台１上に設置されたロール駆動装置であ
る。 Hereinafter, embodiments of the present invention will be described in detail based on the drawings. The illustrated device is a so-called rotary roll briquetting machine, and a support member 2 installed on a base 1 has a diameter of 150 mm and a width of 240 mm.
Two rolls 3 and 4 have a cylindrical shape with a diameter of 4.8 mm and a number of recesses of 1.2 mm in depth on the surface.
are arranged on the left and right at a required interval, and are mounted so as to be rotatable in a vertical plane. Then, one roll 4 is transferred to the other roll 3 by a cylinder 5.
There is a growing push towards Further, a funnel-shaped hopper 6 is fixedly disposed directly above between the rolls 3 and 4, and a screw 7 having an inverted conical outer shape is provided inside the hopper 6.
is adapted to be rotated by a motor 8.
9 is a roll drive device installed on the base 1.
次に粉状苦土石灰の造粒方法について述べる
と、嵩密度0.84ｇ／cm3、含水率2.3〜2.7％、大き
さ297μｍ以下の粉状苦土石灰を、バツチ式のマ
ラーホイール型混練機（図示せず）に装入すると
ともに、水を0.5％、結合剤としての糖密を1.5％
をそれぞれ添加して混練し、この混合物を、図示
するブリケツテイングマシンのホツパ６内に装入
したのち、モータ８の駆動によりスクリユー７を
回転させて混練物をロール３，４間に押し込み、
これと同時に、シリンダ５を伸長作動してロール
４をロール３方向に押しながら、ロール駆動装置
６を駆動してロール３，４を矢印方向に回転させ
ると、ロール３，４間に押し込まれた混練物はロ
ール３，４に圧縮されて複数の粒体が数珠状に連
なつた状態で放出される。この数珠状物を振動式
二段篩構造の整粒機（図示せず）にかけて個々の
粒体に分離し、この粒体を図示しない乾燥機によ
り150〜180℃の温度で約15分間乾燥してその含水
率を0.5％以下にすると、粒径３〜５mm圧壊強度
0.8〜1.5Kgの苦土石灰の粒状品を得ることができ
る。こうして、得た粒状品を目開き２mmの網網上
に置き、温度５〜25℃の清水中に浸して粒状品の
崩壊試験を５回行つたところ、粒状品は各試験
共、水浸後２〜３分間以内に崩壊し、粉状化して
網の下に沈降した。このことから、上記の造粒方
法による粒状品は、水を被ぶると速やかに崩壊し
粉状化することが判る。 Next, the method for granulating powdered magnesia is as follows. Powdered magnesia with a bulk density of 0.84 g/cm 3 , a moisture content of 2.3 to 2.7%, and a size of 297 μm or less is granulated using a batch-type muller wheel kneader. (not shown) with 0.5% water and 1.5% molasses as a binder.
The mixture is charged into the hopper 6 of the illustrated briquetting machine, and the screw 7 is rotated by the drive of the motor 8 to force the kneaded material between the rolls 3 and 4.
At the same time, when the cylinder 5 is extended and pushed to push the roll 4 in the direction of the roll 3, the roll drive device 6 is driven to rotate the rolls 3 and 4 in the direction of the arrow. The kneaded material is compressed by rolls 3 and 4 and released in the form of a plurality of granules connected in a string. The beads were separated into individual granules using a vibrating two-stage sieve (not shown), and these granules were dried at a temperature of 150 to 180°C for about 15 minutes using a dryer (not shown). When the moisture content is reduced to 0.5% or less, the crushing strength increases to 3 to 5 mm in particle size.
Granular products of magnesia lime weighing 0.8-1.5Kg can be obtained. In this way, the obtained granular product was placed on a mesh screen with an opening of 2 mm and immersed in fresh water at a temperature of 5 to 25°C to perform a disintegration test of the granular product five times. It disintegrated within 2-3 minutes, turned into powder and settled under the screen. From this, it can be seen that the granular product produced by the above granulation method quickly disintegrates and becomes powder when exposed to water.
また、粉状炭酸カルシウムの造粒方法について
述べると、嵩密度0.88ｇ／cm3、含水率0.1％、大
きさ210μｍ以下の粉状炭酸カルシウムを、前記
粉状苦土石灰と同様にして図示しないマラーホイ
ール型混練機に装入するとともに、水４％、糖密
1.5％を添加混練し、この混練物を図示するブリ
ケツテイングマシンで数珠状にしたのち整流機に
かけて多数の粒体に分離し、この粒体を乾燥機で
乾燥して含水率を0.5％以下にすると、粒径３〜
５mm、圧壊強度1.5〜2.0Kgの粒状品を得ることが
できる。この炭酸カルシウムの粒状品について苦
土石灰と同様の崩壊試験を行つたところ、苦土石
灰と同じ結果が得られた。 Regarding the method of granulating powdered calcium carbonate, powdered calcium carbonate having a bulk density of 0.88 g/cm 3 , a water content of 0.1%, and a size of 210 μm or less is prepared in the same way as the powdered magnesia (not shown). Charge it to a muller wheel type kneader and add 4% water and molasses.
1.5% is added and kneaded, and this kneaded material is made into beads using the briquetting machine shown in the figure, then separated into a large number of granules using a rectifier, and the granules are dried using a drier to reduce the moisture content to 0.5% or less. Then, the particle size is 3~
Granular products with a diameter of 5 mm and a crushing strength of 1.5 to 2.0 kg can be obtained. When this granular calcium carbonate was subjected to the same disintegration test as magnesia lime, the same results as magnesia lime were obtained.
なお、前記回転ロール式ブリケツテイングマシ
ンには、シリンダ５を取り除いてロール４を固定
式にし、ホツパ６内のスクリユー７を取り除いて
粉状苦土石灰等を自重落下式でロール３，４間に
投入するようにした簡略タイプのものでもよい。 In addition, in the rotary roll type briquetting machine, the cylinder 5 is removed and the roll 4 is fixed, and the screw 7 in the hopper 6 is removed and powdered magnesia is dropped between the rolls 3 and 4 by its own weight. A simple type that can be thrown in may also be used.
以上の説明からも明らかなように本発明は、粉
状の苦土石灰等を、1.5％以下の結合剤を添加し
て混練したのちブリケツテイングマシンにかけて
粒状化し、その後強制乾燥して固定化するように
したから、本発明により粒状化された苦土石灰等
は圧壊強度が0.8〜1.5Kgあつて取扱いに充分耐え
ることができる上に、水を被ぶると速やかに崩壊
し肥料として利用する場合にも適しているなどの
優れた効果を奏する。 As is clear from the above explanation, the present invention involves kneading powdered magnesia lime with the addition of 1.5% or less of a binder, granulating it by applying it to a briquetting machine, and then force-drying it to solidify it. As a result, the granulated magnesium lime etc. according to the present invention has a crushing strength of 0.8 to 1.5 kg and can withstand handling sufficiently, and also disintegrates quickly when exposed to water, making it suitable for use as fertilizer. It has excellent effects such as being suitable for
図面は本発明の実施に利用される回転ロール式
ブリケツテイングマシンの斜視図である。
The drawing is a perspective view of a rotating roll type briquetting machine used in carrying out the present invention.
Claims (1)
約1.5％以下の結合剤と一緒に混練したのち回転
ロール式ブリケツテイングマシンにかけて大きさ
約３〜５mmの粒状にし、その後、この粒状物を含
水率が0.5％以下になるように強制乾燥して固形
化することを特徴とする粉状苦土石灰・粉状炭酸
カルシウムの造粒方法。1 Powdered magnesia or powdered calcium carbonate,
After kneading with a binder of about 1.5% or less, it is made into granules with a size of about 3 to 5 mm using a rotating roll briquetting machine, and then the granules are force-dried to a moisture content of 0.5% or less. A method for granulating powdered magnesia lime and powdered calcium carbonate, which is characterized by solidification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20326083A JPS6096592A (en) | 1983-10-28 | 1983-10-28 | Pelletization of powdery magnesia lime and powdery calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20326083A JPS6096592A (en) | 1983-10-28 | 1983-10-28 | Pelletization of powdery magnesia lime and powdery calcium carbonate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6096592A JPS6096592A (en) | 1985-05-30 |
| JPH0251871B2 true JPH0251871B2 (en) | 1990-11-08 |
Family
ID=16471081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20326083A Granted JPS6096592A (en) | 1983-10-28 | 1983-10-28 | Pelletization of powdery magnesia lime and powdery calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6096592A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0525574Y2 (en) * | 1989-03-14 | 1993-06-28 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899189A (en) * | 1981-12-10 | 1983-06-13 | 北海道糖業株式会社 | Manufacture of limy fertilizer |
-
1983
- 1983-10-28 JP JP20326083A patent/JPS6096592A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5899189A (en) * | 1981-12-10 | 1983-06-13 | 北海道糖業株式会社 | Manufacture of limy fertilizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0525574Y2 (en) * | 1989-03-14 | 1993-06-28 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6096592A (en) | 1985-05-30 |
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