JPS6214935A - Apparatus for granulating molten slag - Google Patents
Apparatus for granulating molten slagInfo
- Publication number
- JPS6214935A JPS6214935A JP60154916A JP15491685A JPS6214935A JP S6214935 A JPS6214935 A JP S6214935A JP 60154916 A JP60154916 A JP 60154916A JP 15491685 A JP15491685 A JP 15491685A JP S6214935 A JPS6214935 A JP S6214935A
- Authority
- JP
- Japan
- Prior art keywords
- slag
- stirring blades
- molten slag
- rotors
- blades
- 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.)
- Pending
Links
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、溶融スラグを効率よく造粒化し、スラグの顕
熱を回収する装置に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an apparatus for efficiently granulating molten slag and recovering sensible heat from the slag.
冶金工程で排出される溶融スラグを撹拌冷却して粒状化
し、スラグの有する顕熱を回収する溶融スラグ造粒方法
または装置に関しては種々提案されている。たとえば特
開昭５８−１９９０３４号公報においては、溶融状態の
高炉スラグを無酸化雰囲気中で撹拌、造粒して粒径８０
鴨以下の粒状スラグを連続的に製造し、溶融スラグの有
する顕熱を回収する方法を開示しており、その実施例と
して、第３図に示すような装置を挙げている。この装置
は、溶融スラグ導入口３２と造粒スラグ排出口３３を有
する長尺の造粒ドラム３１内に溶融スラグを導入口３２
から導入し、撹拌翼３５を有しかつ内部に冷却媒体通路
３７が設けられた回転軸３４を回転させることによシ、
造粒スラグを得、得られたスラグ粒をスラグ冷却装置に
て冷却し、加熱ガスを熱交換器等に供して熱回収するも
のである。このように容器内に設けた撹拌翼を有する回
転体によシスラグを造粒し、熱回収する方法あるいは装
置としては、他に実開昭５５−１４２５４２号公報、実
開昭５７−９０７３５号公報、特開昭５９−３４４１８
号公報のものがある。Various proposals have been made regarding molten slag granulation methods and devices for stirring, cooling, and granulating molten slag discharged from metallurgical processes and recovering the sensible heat of the slag. For example, in Japanese Patent Application Laid-Open No. 58-199034, molten blast furnace slag is stirred and granulated in a non-oxidizing atmosphere to obtain particles with a particle size of 80.
This publication discloses a method for continuously producing granular slag smaller than a duck's size and recovering sensible heat contained in the molten slag, and cites an apparatus as shown in FIG. 3 as an example thereof. This device introduces molten slag into a long granulation drum 31 having a molten slag inlet 32 and a granulated slag outlet 33.
By rotating a rotary shaft 34 having a stirring blade 35 and a cooling medium passage 37 provided inside,
Granulated slag is obtained, the obtained slag particles are cooled in a slag cooling device, and the heated gas is used in a heat exchanger or the like to recover heat. Other methods and devices for granulating cis slag using a rotating body with stirring blades provided in a container and recovering heat are disclosed in Japanese Utility Model Application Publication No. 55-142542 and Japanese Utility Model Application Publication No. 57-90735. , Japanese Patent Publication No. 59-34418
There is a publication number.
上記のように、容器内に設けた撹拌翼を有する回転体の
回転により造粒スラグを造粒する方法あるいは装置にお
いて、スラグの造粒能力は、溶融スラグからの抜熱量に
支配される。抜熱量はスラグを冷却するだめの冷却面積
に支配され、冷却面積はその大半が撹拌翼によシ構成さ
れるため、抜熱量を増加し、造粒能力を向上させるため
には、撹拌翼を増加することが必要である。このように
、撹拌翼のピッチを小さくし翼数を増やせばよいのであ
るが、ピッチを小さくし翼同士が接近すると、第４図（
ａ） ＋ （ｂ）に示すように撹拌翼３５に付着したス
ラグによシブリッジが４１形成され、さらにこのブリッ
ジ４１によシスラグ付着が促進され、かえって伝熱阻害
をもたらし、造粒能力を低下させることとなる。このた
め、従来は撹拌翼ピッチは約４５０調以上とする必要が
あシ、所望の造粒能力を得るためには膨大な機長を要し
た。As described above, in a method or apparatus for granulating slag by rotating a rotating body having stirring blades provided in a container, the granulation ability of the slag is controlled by the amount of heat removed from the molten slag. The amount of heat removed is controlled by the cooling area of the tank that cools the slag, and most of the cooling area is made up of the stirring blades. Therefore, in order to increase the amount of heat removed and improve the granulation ability, it is necessary to use the stirring blades. It is necessary to increase. In this way, it is possible to reduce the pitch of the stirring blades and increase the number of blades, but if the pitch is reduced and the blades approach each other, as shown in Figure 4 (
a) + As shown in (b), a sysbridge 41 is formed by the slag adhering to the stirring blade 35, and this bridge 41 further promotes syslag adhesion, which in turn impedes heat transfer and reduces the granulation ability. That will happen. For this reason, in the past, it was necessary to set the pitch of the stirring blades to about 450 pitches or more, and an enormous amount of equipment was required to obtain the desired granulation capacity.
そこで、これらの問題点を解決すべく本発明においては
、撹拌翼のピッチを小さくして翼数を増やしても、スラ
グ付着によるブリッジを形成することなく継続して造粒
能力を向上させることのできるコンパクトな溶融スラグ
造粒装置を提供することを目的としている。Therefore, in order to solve these problems, in the present invention, even if the pitch of the stirring blades is reduced and the number of blades is increased, the granulation ability can be continuously improved without forming bridges due to slag adhesion. The purpose is to provide a compact molten slag granulation device that can
上記問題点を解決するために、本発明は、一端部に溶融
スラグ供給口を、他端部に造粒スラグ排出口を有するケ
ーシング内に、前記供給口から供給された溶融スラグ全
撹拌、冷却、造粒しながら前記排出口へ移送させる実質
的に螺旋状の撹拌翼を有し、かつ内部に冷却媒体通路を
備えた移送回転体を設けた装置において：前記移送回転
体を、２基以上スラグの移送方向に沿わせ並列にかつ実
質的に同一水平面または緩傾斜面に沿わせて配置すると
ともに、隣り合う移送回転体の撹拌翼を、その螺旋方向
が逆向きになり、一方の撹拌翼先端が他方の撹拌翼先端
間に入り込むよう形成し、前う回転するようにした構成
としている。In order to solve the above problems, the present invention provides a casing having a molten slag supply port at one end and a granulated slag discharge port at the other end, and the molten slag supplied from the supply port is completely stirred and cooled. , in an apparatus provided with a transfer rotary body having a substantially helical stirring blade for transferring the granules to the discharge port while granulating the particles, and having a cooling medium passage therein: two or more of the transfer rotary bodies; The stirring blades of adjacent transfer rotors are arranged in parallel along the slag transfer direction and along substantially the same horizontal plane or gently sloped surface, and the stirring blades of adjacent transfer rotors are arranged so that their helical directions are opposite, and one stirring blade The tip is formed so as to fit between the tips of the other stirring blade, and is configured to rotate forward.
本発明にシいては、第１図および第２図に示すように、
ケーシング１内に移送回転体４ 、４ｉ２基以上並列に
、かつ隣シ合う回転体４，４の撹拌翼５・、５同ヨ；相
互に翼間に入り込むように配置し、それぞれ周速が同一
となり、かつ逆回転させるよう構成しているので、スラ
グ移送方向に跨がって撹拌翼間にブリッジスラグが生成
しようとしても、交錯する他の撹拌翼の回転によシ容易
に切断され、脱落し、成長しない。したがってスラグに
よるブリッジが形成されることもない。このため、撹拌
翼ピッチ間隔を小さくすることができ、撹拌翼数を増加
できる。その結果、有効な冷却面積を大きくすることが
でき、抜熱量を増大させ、造粒効果を高めることができ
る。また、装置の小型化も可能となる。なお、同一周速
とするのは撹拌翼同士が接触することを防止するためで
あシ、また移送回転体を逆回転で、逆ピッチとするのは
、もし、同回転方向で、同ピッチ翼であれば、翼の入り
込み部での翼傾き方向が互いに逆となり、翼ピツチを小
忌くできない上に、スラグを剥落する効率が低下するた
めである。According to the present invention, as shown in FIGS. 1 and 2,
Two or more transfer rotors 4, 4i are arranged in parallel in the casing 1, and the stirring blades 5, 5 of the adjacent rotors 4, 4 are arranged so as to fit between the blades, and each has the same circumferential speed. , and is configured to rotate in the opposite direction, so even if bridge slag attempts to form between the stirring blades across the slag transfer direction, it will be easily cut off by the rotation of other intersecting stirring blades and will not fall off. And it doesn't grow. Therefore, no bridges due to slag are formed. Therefore, the pitch interval of the stirring blades can be reduced, and the number of stirring blades can be increased. As a result, the effective cooling area can be increased, the amount of heat removed can be increased, and the granulation effect can be enhanced. Furthermore, it is possible to downsize the device. Note that the reason why the circumferential speed is the same is to prevent the stirring blades from coming into contact with each other, and the reason why the transfer rotary body is made to rotate in the opposite direction and have the opposite pitch is to prevent the stirring blades from coming into contact with each other. If this is the case, the blade inclination directions at the entry portion of the blades will be opposite to each other, making it impossible to avoid blade pitches and reducing the efficiency of peeling off slag.
翼の入り込み量は造粒中スラグ内への翼浸漬深さとする
のが良いが、冷却能の高い翼先端近傍のブリッジを落す
だけでも充分効果はあシ、又、各移送回転体での有効撹
拌冷却面積を大きくするためには入り込み量は小さい方
が良い事より、１０鰭以上でスラグ内への翼浸漬深さく
通常翼片長さの１７２程度）以下とするのが好ましい。It is best to set the depth of blade penetration into the slag during granulation, but simply dropping the bridge near the tip of the blade, which has a high cooling capacity, will be sufficient. In order to increase the agitation cooling area, it is better to have a smaller penetration depth, so it is preferable that the depth of blade immersion into the slag be less than 10 fins (normally about 172 blade length) or less.
〔発明の具体例〕
次に、本発明を第１図、第２図を参照して具体的に述べ
る。[Specific Examples of the Invention] Next, the present invention will be specifically described with reference to FIGS. 1 and 2.
ケーシング１には、溶融スラグ供給口２が設けられてお
シ、この溶融スラグ供給口２よシ溶融スラグが連続的に
供給される。溶融スラグは、多数の撹拌翼小片が実質的
に螺旋に沿って配置された撹拌翼５，５を有する２基以
上の移送回転体４，４により冷却造粒化されながら移送
され、造粒スラグ排出口３より排出される。移送回転体
４，４は内部に冷却媒体通路９，９を有しておシ、冷却
媒体Ｐによシ冷却される。また、移送回転体４，４の撹
拌翼５，５同士が同一間隔で逆螺旋方向に、しかも第２
図に示すように相互に入り組んで重複するよう設けられ
ておシ、互いに同一周速で逆回転されるようになってい
る。したがって、撹拌翼にスラグが付着してもこれを他
の撹拌翼によシ剥落することができ、スラグの付着成長
によるブリッジを形成することはない。また、翼ピツチ
範囲はたとえば翼の厚みを４０ｍ程度、隣シ合う回転体
の翼間の間隔を３０瓢程度とすると４５０１１ｍ以下１
４０１１１１１１程度にまですることができる。さらに
、翼の重なシ長さく一方の撹拌翼が他方の撹拌翼に入り
込む長さ）Ｌは第５図に示すように翼長さ＝ｔ、スラグ
層厚＝ｄとすると基本的にはｄくしくｔとして決定でき
、スラグ層厚ｄ（スラグ処理能力）は処理能力により決
めることができる。なお、６，６′は伝達歯車で、モー
ター７の駆動力を２基の移送回転体４，４が互いに逆方
向に一定比の回転数で回転するように伝達する。１０は
冷却媒体排出路である。A molten slag supply port 2 is provided in the casing 1, and molten slag is continuously supplied through the molten slag supply port 2. The molten slag is transferred while being cooled and granulated by two or more transfer rotors 4, 4 having stirring blades 5, 5 in which a large number of small pieces of stirring blades are arranged substantially spirally. It is discharged from the discharge port 3. The transfer rotors 4, 4 have cooling medium passages 9, 9 inside and are cooled by the cooling medium P. Further, the stirring blades 5, 5 of the transfer rotors 4, 4 are rotated in a reverse spiral direction at the same interval, and in a second direction.
As shown in the figure, they are arranged so as to intertwine and overlap with each other, so that they rotate in opposite directions at the same circumferential speed. Therefore, even if slag adheres to the stirring blade, it can be peeled off by other stirring blades, and no bridges are formed due to the adhesion and growth of slag. In addition, the blade pitch range is, for example, 45011 m or less, assuming that the thickness of the blade is about 40 m and the spacing between the blades of adjacent rotating bodies is about 30 m.
It can be up to about 40111111. Furthermore, if the blade length is t and the slag layer thickness is d, then L is basically d as shown in Figure 5. The slag layer thickness d (slag processing capacity) can be determined based on the processing capacity. Incidentally, reference numerals 6 and 6' denote transmission gears that transmit the driving force of the motor 7 so that the two transfer rotary bodies 4 and 4 rotate in opposite directions at a constant ratio of rotational speeds. 10 is a cooling medium discharge path.
次に実施例によシ本発明の効果を明らかにする。 Next, the effects of the present invention will be clarified by way of examples.
撹拌翼ピッチを従来の４５０露から半分の２２５謹にし
、翼数を１基当９２倍にして、移送回転体を２基並列配
置した第１図および第２図に示す装置にて溶融スラグを
造粒したところ、スラグ付着によるブリッジが形成され
ることはなかった。この装置では、同一長さの装置に比
べ、移送回転体が２倍となるため、その分スラグ処理量
も増加し、全体として従来のものに比べ約３倍（工移送
回転体当り１．５倍）の処理量が達成された。The pitch of the stirring blades was halved from the conventional 450 to 225, the number of blades was increased by 92 times per unit, and the molten slag was processed using the equipment shown in Figures 1 and 2, in which two transfer rotors were arranged in parallel. When granulated, no bridges due to slag adhesion were formed. This equipment has twice the number of transfer rotors compared to a device of the same length, so the amount of slag throughput increases accordingly, and the overall amount is approximately three times that of conventional equipment (1.5 times per transfer rotor). ) throughput was achieved.
以上のように、本発明によれば、撹拌翼間におけるブリ
ッジの形成を防止することができるので撹拌翼ピッチを
小さくすることができる。したがって翼数を増すことが
で、きるので、抜熱効果および造粒効果を高めることが
できる。また、その分装置も小型化可能となる。As described above, according to the present invention, it is possible to prevent the formation of bridges between the stirring blades, so that the pitch of the stirring blades can be reduced. Therefore, by increasing the number of blades, it is possible to increase the heat removal effect and the granulation effect. Furthermore, the device can also be made smaller accordingly.
第１図は本発明の一実施例を示す造粒装置の平面図、第
２図はその■−■線矢視断面図、第３図は従来の造粒装
置を示す概略断面図、第４図（ａ）。
（ｂ）は従来の造粒装置の撹拌翼におけるスラグの付着
状態を示す図、第５図は翼の重なシ状態を示す概略図で
ある。
１・・・ケーシング、２・・・溶融スラグ供給口、３・
・・排出口、４・・・移送回転体、５・・・撹拌翼、６
，６′・・・伝達歯車、７・・・モーター、９・・・冷
却媒体通路、１０・・・冷却媒体排出路、４１・・・ブ
リッジ。
第１図
第２図
？
第３図
第４図
（ｂ）
第５図FIG. 1 is a plan view of a granulating device showing an embodiment of the present invention, FIG. 2 is a sectional view taken along the line ■-■, FIG. 3 is a schematic sectional view showing a conventional granulating device, and FIG. Figure (a). (b) is a diagram showing the state of adhesion of slag on the stirring blades of a conventional granulator, and FIG. 5 is a schematic diagram showing the state of overlapping blades. 1... Casing, 2... Molten slag supply port, 3.
...Discharge port, 4... Transfer rotating body, 5... Stirring blade, 6
, 6'...Transmission gear, 7...Motor, 9...Cooling medium passage, 10...Cooling medium discharge passage, 41...Bridge. Figure 1 Figure 2? Figure 3 Figure 4 (b) Figure 5
Claims (1)
グ排出口を有するケーシング内に、前記供給口から供給
された溶融スラグを撹拌、冷却、造粒しながら前記排出
口へ移送させる実質的に螺旋状の撹拌翼を有し、かつ内
部に冷却媒体通路を備えた移送回転体を設けた装置にお
いて；前記移送回転体を２基以上スラグの移送方向に沿
わせ並列にかつ実質的に同一水平面に沿わせて配置する
とともに、隣り合う移送回転体の撹拌翼を、その螺旋方
向が逆向きになり、一方の撹拌翼先端が他方の撹拌翼先
端間に入り込むよう形成し、前記移送回転体はその撹拌
翼の周速が同一になる回転数をもってかつ回転方向とし
て相互が逆回転するよう回転するようにしたことを特徴
とする溶融スラグ造粒装置。(1) Inside a casing that has a molten slag supply port at one end and a granulated slag discharge port at the other end, the molten slag supplied from the supply port is stirred, cooled, and granulated while being transferred to the discharge port. In an apparatus provided with a transfer rotary body having a substantially helical stirring blade and having a cooling medium passage inside; The stirring blades of adjacent transfer rotors are arranged along the same horizontal plane, and the spiral directions of the stirring blades are opposite to each other, and the tip of one stirring blade is inserted between the tips of the other stirring blade. A molten slag granulating apparatus characterized in that the transfer rotor rotates at a rotation speed such that the circumferential speed of its stirring blades is the same, and the rotation directions are opposite to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60154916A JPS6214935A (en) | 1985-07-13 | 1985-07-13 | Apparatus for granulating molten slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60154916A JPS6214935A (en) | 1985-07-13 | 1985-07-13 | Apparatus for granulating molten slag |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6214935A true JPS6214935A (en) | 1987-01-23 |
Family
ID=15594761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60154916A Pending JPS6214935A (en) | 1985-07-13 | 1985-07-13 | Apparatus for granulating molten slag |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6214935A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8525331B2 (en) | 2008-12-22 | 2013-09-03 | Ams Ag | Chip design having integrated fuse and method for the production thereof |
| CN110799271A (en) * | 2017-05-03 | 2020-02-14 | I.M.A.工业机械自动装置股份公司 | Apparatus and method for coating bulk material |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5069831A (en) * | 1973-04-12 | 1975-06-10 | ||
| JPS58121895U (en) * | 1982-02-13 | 1983-08-19 | 同和工営株式会社 | Container for transporting powder and granular materials |
-
1985
- 1985-07-13 JP JP60154916A patent/JPS6214935A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5069831A (en) * | 1973-04-12 | 1975-06-10 | ||
| JPS58121895U (en) * | 1982-02-13 | 1983-08-19 | 同和工営株式会社 | Container for transporting powder and granular materials |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8525331B2 (en) | 2008-12-22 | 2013-09-03 | Ams Ag | Chip design having integrated fuse and method for the production thereof |
| CN110799271A (en) * | 2017-05-03 | 2020-02-14 | I.M.A.工业机械自动装置股份公司 | Apparatus and method for coating bulk material |
| CN110799271B (en) * | 2017-05-03 | 2021-08-17 | I.M.A.工业机械自动装置股份公司 | Apparatus and method for coating bulk material |
| US11517928B2 (en) | 2017-05-03 | 2022-12-06 | I.M.A. Industria Automatiche S.P.A. | Apparatus for coating bulk material and including a material discharge regulator |
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