JPH0424392Y2 - - Google Patents
Info
- Publication number
- JPH0424392Y2 JPH0424392Y2 JP1987148547U JP14854787U JPH0424392Y2 JP H0424392 Y2 JPH0424392 Y2 JP H0424392Y2 JP 1987148547 U JP1987148547 U JP 1987148547U JP 14854787 U JP14854787 U JP 14854787U JP H0424392 Y2 JPH0424392 Y2 JP H0424392Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating body
- angle
- cylindrical rotating
- rotary kiln
- raw material
- 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
- 239000000843 powder Substances 0.000 claims description 3
- 239000013618 particulate matter Substances 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 239000011449 brick Substances 0.000 description 13
- 239000002994 raw material Substances 0.000 description 13
- 230000014759 maintenance of location Effects 0.000 description 6
- 239000002801 charged material Substances 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 230000003179 granulation Effects 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
Landscapes
- Mixers With Rotating Receptacles And Mixers With Vibration Mechanisms (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Glanulating (AREA)
Description
【考案の詳細な説明】
「産業上の利用分野」
本考案は、粉体の造粒、造粒物の乾燥、ペレツ
トの焼成等に用いられるドラムミキサー、ロータ
リードライヤー、ロータリーキルン等の円筒状回
転体に関するものである。[Detailed description of the invention] "Industrial application field" This invention is applicable to cylindrical rotating bodies such as drum mixers, rotary dryers, rotary kilns, etc. used for granulation of powder, drying of granules, baking of pellets, etc. It is related to.
「従来の技術」
従来、円筒状回転体へ装入した粉粒状物質の処
理条件として、例えば滞留時間を調整するには、
円筒状回転体の回転速度を加減することによつて
行われていた。"Prior Art" Conventionally, as a treatment condition for powdery material charged into a cylindrical rotating body, for example, in order to adjust the residence time,
This was done by adjusting the rotational speed of a cylindrical rotating body.
例えば、ドラムミキサーでは、その回転速度を
遅くすることにより装入物の装置内保有率が高く
なり造粒機能の向上を図ることができる。また、
ロータリードライヤーやロータリーキルンでは、
それぞれ回転速度を遅くすることにより装入物の
滞留時間が延長され乾燥機能や焼成機能の効率向
上を図ることができる。 For example, in a drum mixer, by slowing down the rotation speed, the retention rate of the charged material in the device can be increased, and the granulation function can be improved. Also,
In rotary dryers and rotary kilns,
By slowing down the rotational speed, the residence time of the charged material is extended, and the efficiency of the drying function and firing function can be improved.
「考案が解決しようとする問題点」
ところで、上記回転速度の調整は、円筒状回転
体の回転軸の傾斜角度によつて自ら限界のあるも
のである。"Problems to be Solved by the Invention" By the way, the adjustment of the rotation speed described above has its own limitations depending on the inclination angle of the rotation axis of the cylindrical rotating body.
例えば、ロータリーキルンを用いて還元ペレツ
トの還元率または強度の向上を図る場合は、キル
ン回転数を下げることにより装入物の層厚を上げ
炉内滞留時間を増してやるが、キルン回転数をあ
まり下げると入側から装入物が漏れ（炉尻もれ）、
このアクシヨンには限界がある。また、造粒の場
合には、同様に装入物の装置内保有率の向上に限
界がある。 For example, when trying to improve the reduction rate or strength of reduced pellets using a rotary kiln, the kiln rotation speed is lowered to increase the layer thickness of the charge and increase the residence time in the furnace, but the kiln rotation speed is not lowered too much. The charge leaks from the inlet side (furnace bottom leak),
This action has its limits. In addition, in the case of granulation, there is a limit to improving the retention rate of the charged material in the device.
従来、例えばロータリーキルンにおいて入側に
突起状煉瓦を用いたものとして、例えば実開昭60
−156393号、同52−115643号、同50−79737号、
同49−123667号の各公報に開示されたものがある
が、これらはいずれも従来にくらべ掻上げ機能を
付加するのみであつて滞留時間を延長する等の機
能を有するものは発表されていない。 Conventionally, for example, in rotary kilns, protruding bricks were used on the entrance side, for example, in the 60s.
−156393, No. 52-115643, No. 50-79737,
There are some disclosures in the publications of No. 49-123667, but none of these have been announced to have functions such as extending retention time, only adding a raking function compared to the conventional ones. .
本考案は、かくの如き従来の問題を解決するこ
とを目的とする。 The present invention aims to solve such conventional problems.
「問題点を解決するための手段」
本考案は、粉粒状物質を一端から装入し、回転
処理して他端から排出する傾斜横型円筒状回転体
において、前記回転体の一端側に設けた入口部の
内周面に複数本の螺旋状突条を、前記内周面の展
開図における前記突条と前記回転体の軸とのなす
角が前記粉粒状物質の安息角よりも大きくなるよ
う設けたことを特徴とする。"Means for Solving Problems" The present invention provides an inclined horizontal cylindrical rotating body in which powdery material is charged from one end, processed by rotation, and discharged from the other end. A plurality of spiral protrusions are provided on the inner circumferential surface of the inlet portion such that the angle between the protrusions and the axis of the rotating body in a developed view of the inner circumferential surface is larger than the angle of repose of the powdery granular material. It is characterized by having been provided.
「作用」
円筒状回転体の入口部に設けた螺旋条突条によ
り、装入物に推力を生じさせ、例えば前記突条を
設けない場合の約20倍の速度で移動するため、入
側における装入物の層厚が薄くなり、円筒状回転
体の回転数を下げることが可能になる。その結
果、装入物の装置内保有率を高くすることがで
き、装置内滞留時間を長くすることができる。"Operation" The spiral protrusion provided at the entrance of the cylindrical rotating body generates thrust on the charge, and the charge moves at a speed approximately 20 times faster than when the protrusion is not provided. The layer thickness of the charge becomes thinner, making it possible to lower the rotational speed of the cylindrical rotating body. As a result, the retention rate of the charge in the device can be increased, and the residence time in the device can be lengthened.
「実施例」 以下に、本考案の実施例を説明する。"Example" Examples of the present invention will be described below.
第１図において、１は本考案の円筒状回転体の
一例であるロータリーキルンである。２は原料を
投入するシユートで、その先端はロータリーキル
ン１の入口部１ａに差し込まれている。 In FIG. 1, 1 is a rotary kiln which is an example of the cylindrical rotating body of the present invention. Reference numeral 2 denotes a chute into which raw materials are introduced, the tip of which is inserted into the inlet portion 1a of the rotary kiln 1.
前記入口部１ａの入側は、投入された原料３がこ
ぼれないように絞られている。この絞りの程度
は、材料の熱変形を考慮してぎりぎりの隙間にし
てある。The inlet side of the inlet portion 1a is constricted to prevent the input raw material 3 from spilling out. The degree of this narrowing is set to the narrowest possible gap in consideration of thermal deformation of the material.
前記入口部１ａの内周面は、第２図に示す如く
通常煉瓦４の間に６個の突起状煉瓦５が取付けて
あり、この突起状煉瓦５の原料進行方向への配列
は、第３図に模式的に示す如く、階段状にずらし
て取付けられ、６条のスパイラルを構成する。そ
のずれの程度は、ロータリーキルン１の回転軸Ｌ
に対して原料の安息角以上の角度Ｄにずらすこと
が必要である。また、ずらす方向は矢印で示すロ
ータリーキルン１の回転方向の場合は、図示の如
く右上がりとする。 As shown in FIG. 2, six projecting bricks 5 are attached between the regular bricks 4 on the inner circumferential surface of the entrance portion 1a, and the arrangement of the projecting bricks 5 in the raw material advancing direction is as follows. As schematically shown in the figure, they are attached staggered in a stepwise manner, forming a six-strand spiral. The degree of deviation is determined by the rotation axis L of rotary kiln 1.
It is necessary to shift the angle D to an angle D that is greater than the angle of repose of the raw material. Further, in the case of the direction of rotation of the rotary kiln 1 indicated by the arrow, the direction of shift is upward to the right as shown in the figure.
ロータリーキルン１の入口部１ａ以外の内周面
は、すべて通常煉瓦４が取付けてある。 ６は、
鉄皮である。 Normal bricks 4 are attached to the entire inner peripheral surface of the rotary kiln 1 other than the entrance portion 1a. 6 is
It is iron skin.
７は、ロータリーキルン１の回転機構であり、
タイヤ８、ローラ９、スラストローラ１０、モー
タ１１、変速機構１２、ピニオン１３、ギア１４
で構成されている。 7 is a rotation mechanism of the rotary kiln 1;
Tire 8, roller 9, thrust roller 10, motor 11, transmission mechanism 12, pinion 13, gear 14
It is made up of.
１５はバーナ、１６は出側のシユートである。 15 is a burner, and 16 is a chute on the outlet side.
ロータリーキルン１は、原料進行方向に若干下
がり勾配に設置されている。 The rotary kiln 1 is installed at a slightly downward slope in the raw material advancing direction.
つぎに、上記構成の本考案装置の動作について
説明する。 Next, the operation of the device of the present invention having the above configuration will be explained.
第１図〜第３図に示す如く、原料３がシユート
２を経てロータリーキルン１の入口部１ａの入側
に投入されると、原料３は突起状煉瓦５の回転方
向前端面５ａによつてスパイラル状の推力が与え
られて高速で排出側に移動する。従つて入口部１
ａにおける原料３の層厚は薄くなるが、入口部１
ａを過ぎると入口部に近接する部分では若干層厚
が厚いが全体的には従来と同じ層厚で出側のシユ
ート１６へ移動していく。 As shown in FIGS. 1 to 3, when the raw material 3 is introduced into the inlet side of the rotary kiln 1 through the chute 2, the raw material 3 is spirally moved by the front end surface 5a of the protruding brick 5 in the rotating direction. It moves toward the ejection side at high speed due to the thrust of . Therefore, the entrance part 1
Although the layer thickness of the raw material 3 in a becomes thinner, the inlet part 1
After passing point a, the layer thickness is slightly thicker in the portion close to the inlet, but the overall layer thickness is the same as before and moves to the outlet chute 16.
そこで、入口部１ａの入側において炉尻もれを
起さない範囲で回転機構７を調整しロータリーキ
ルン１の回転数を下げることができる。その結
果、全体的に原料３の炉内保有率が上がり、炉内
滞留時間が長くなり、例えば還元ペレツトの場合
は、その還元率や強度等の品質が向上する。 Therefore, the rotational speed of the rotary kiln 1 can be lowered by adjusting the rotation mechanism 7 within a range that does not cause furnace bottom leakage on the inlet side of the inlet portion 1a. As a result, the overall retention rate of the raw material 3 in the furnace increases, the residence time in the furnace increases, and in the case of reduced pellets, for example, the quality such as reduction rate and strength improves.
なお、上記説明では、突起状煉瓦で６条のスパ
イラルを構成するとしたが、原料の層厚を確保で
きる範囲で適宜の条数とすることができる。ま
た、突起条煉瓦をずらす角度が安息角を越えない
と原料の推力が発生せず、また、あまり角度を大
きくし過ぎると、原料の種類によつては粉化する
場合がある。例えば、直径10〜15mmのペレツトの
安息角は30度であり、ばら物の安息角は40度であ
る。さらに、煉瓦の形状は突起状に限ることな
く、例えば異形煉瓦を用いて、階段状でなく連続
的な突条としてもよい。 In the above description, it is assumed that six spirals are made of protruding bricks, but the number of spirals can be set as appropriate as long as the layer thickness of the raw material can be ensured. Further, if the angle at which the protruding strip bricks are shifted does not exceed the angle of repose, no thrust will be generated from the raw material, and if the angle is too large, depending on the type of raw material, it may turn into powder. For example, the angle of repose for pellets with a diameter of 10-15 mm is 30 degrees, and the angle of repose for bulk particles is 40 degrees. Further, the shape of the bricks is not limited to a protruding shape, and for example, irregularly shaped bricks may be used to form continuous protrusions instead of steps.
前記入口部の原料進行方向の長さは、ロータリ
ーキルンの全長が50mの場合で、例えば3m程度
である。 The length of the inlet section in the raw material advancing direction is, for example, about 3 m when the total length of the rotary kiln is 50 m.
「考案の効果」
以上述べた如く、本考案の円筒状回転体を用い
ることにより、円筒状回転体の回転数を下げるこ
とができるため、装入物の装置内保有率が高くな
り、装置内滞留時間を長くすることができ、装入
物の品質が向上するという効果がある。"Effects of the invention" As stated above, by using the cylindrical rotating body of the present invention, the rotation speed of the cylindrical rotating body can be lowered, which increases the retention rate of the charge in the equipment and This has the effect of increasing the residence time and improving the quality of the charged material.
第１図は、本考案の一実施例を示すロータリー
キルンの長手方向断面説明図、第２図は、第１図
におけるＸ−Ｘ線断面説明図、第３図は、突起状
煉瓦の配列を説明するための入口部内周面の展開
説明図である。
１……ロータリーキルン、１ａ……入口部、４
……通常煉瓦、５……突起状煉瓦、７……回転機
構。
Fig. 1 is an explanatory longitudinal cross-sectional view of a rotary kiln showing one embodiment of the present invention, Fig. 2 is an explanatory cross-sectional view taken along the line X-X in Fig. 1, and Fig. 3 is an explanatory view of the arrangement of protruding bricks. FIG. 1... Rotary kiln, 1a... Inlet section, 4
...Normal brick, 5...Protruding brick, 7...Rotating mechanism.
Claims (1)
端から排出する傾斜横型円筒状回転体において、
前記回転体の一端側に設けた入口部の内周面に複
数本の螺旋状突条を、前記内周面の展開図におけ
る前記突条と前記回転体の軸とのなす角が前記粉
粒状物質の安息角よりも大きくなるよう設けたこ
とを特徴とする粉粒状物質処理用円筒状回転体。 An inclined horizontal cylindrical rotating body that charges particulate matter from one end, rotates it, and discharges it from the other end.
A plurality of spiral protrusions are provided on the inner circumferential surface of the inlet provided at one end of the rotating body, and the angle between the protrusions and the axis of the rotating body in a developed view of the inner circumferential surface is shaped like the powder grain. A cylindrical rotating body for processing particulate matter, characterized in that the angle of repose of the substance is larger than the angle of repose of the substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987148547U JPH0424392Y2 (en) | 1987-09-29 | 1987-09-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987148547U JPH0424392Y2 (en) | 1987-09-29 | 1987-09-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6453895U JPS6453895U (en) | 1989-04-03 |
| JPH0424392Y2 true JPH0424392Y2 (en) | 1992-06-09 |
Family
ID=31419963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987148547U Expired JPH0424392Y2 (en) | 1987-09-29 | 1987-09-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0424392Y2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4875289B2 (en) * | 2004-02-20 | 2012-02-15 | 武春 齊藤 | Processing equipment |
| SI1896253T1 (en) * | 2005-06-06 | 2014-08-29 | Tioxide Group Services Limited | Methods for forming pigment pseudoparticles |
| JP2014196493A (en) * | 2014-04-11 | 2014-10-16 | マニユフアクチヤリング・アンド・プロセス・テクノロジーズ・エルエルシー（デイー／ビー／エイ エムピー テクノロジーズ） | Method of forming pigment pseudo-particle |
| JP6972859B2 (en) * | 2017-09-29 | 2021-11-24 | 住友金属鉱山株式会社 | Rotary kiln end structure |
-
1987
- 1987-09-29 JP JP1987148547U patent/JPH0424392Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6453895U (en) | 1989-04-03 |
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