JPS6310358B2 - - Google Patents
Info
- Publication number
- JPS6310358B2 JPS6310358B2 JP58247355A JP24735583A JPS6310358B2 JP S6310358 B2 JPS6310358 B2 JP S6310358B2 JP 58247355 A JP58247355 A JP 58247355A JP 24735583 A JP24735583 A JP 24735583A JP S6310358 B2 JPS6310358 B2 JP S6310358B2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- layer
- fuel
- surface layer
- raw materials
- 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
- 239000002994 raw material Substances 0.000 claims description 40
- 239000000446 fuel Substances 0.000 claims description 28
- 238000005245 sintering Methods 0.000 claims description 23
- 238000003756 stirring Methods 0.000 claims description 15
- 238000002156 mixing Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000002344 surface layer Substances 0.000 description 27
- 239000010410 layer Substances 0.000 description 19
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 239000003610 charcoal Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 239000000571 coke Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000004449 solid propellant Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
- Manufacturing Cores, Coils, And Magnets (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は焼結機に関するものである。[Detailed description of the invention] (Industrial application field) The present invention relates to a sintering machine.
（従来技術）
ドワイトロイド式焼結機において、点火炉の前
段に予熱炉を設け、配合原料表層を予熱した後点
火して焼結を行うタイプの焼結機は特公昭54−
24682号公報に開示されている。更には焼結ベツ
ドの高さ方向でコークス含有率を異にして、即ち
上層の配合原料のコークス配合割合を下層よりも
大として２段装入を行い表層を予熱して点火する
タイプの焼結機は特開昭55−107741号公報に開示
されている。(Prior art) In the Dwight Lloyd type sintering machine, a preheating furnace is installed before the ignition furnace, and after preheating the surface layer of the blended raw materials, the sintering machine is ignited and sintered.
It is disclosed in Publication No. 24682. Furthermore, there is a type of sintering in which the coke content is varied in the height direction of the sintering bed, that is, the coke content of the raw materials in the upper layer is higher than that in the lower layer, charging is carried out in two stages, and the surface layer is preheated and ignited. The machine is disclosed in Japanese Patent Application Laid-Open No. 55-107741.
これらの技術は焼結ベツド上層部の入熱を大な
らしめて上層部の焼結鉱品質を改善できるという
効果がある。 These techniques have the effect of increasing the heat input into the upper layer of the sintered bed and improving the quality of the sintered ore in the upper layer.
前記特開昭55−107741号公報に開示された２段
装入の技術は当然のことながら２系列の配合原料
製造設備を必要とするので設備費及び運転に要す
る費用が大であるという難点がある。 The two-stage charging technology disclosed in JP-A No. 55-107741 naturally requires two lines of mixed raw material manufacturing equipment, which has the disadvantage of high equipment and operating costs. be.
更に、カツトオフプレートと点火炉との間で、
粒径３mm以下の木炭粉よりなる着火層を、焼結原
料層上に散布し、この着火層への点火を介して焼
結原料中に配合したコークス粉の燃焼を導くとい
う焼結方法が特開昭58−120750号公報に開示され
ている。 Furthermore, between the cut-off plate and the ignition furnace,
A special sintering method is that an ignition layer made of charcoal powder with a particle size of 3 mm or less is spread on the sintering raw material layer, and the ignition layer is ignited to lead to the combustion of coke powder mixed in the sintering raw material. It is disclosed in 1982-120750.
この技術は木炭の着火温度がコークスの着火温
度より低いという点に着目したものであるが、木
炭を表面に均一に散布した配合原料層が、点火炉
へ入つた際、バーナーのフレームにより木炭粉が
舞い上がり、炉内の気流によつて再びベツド表面
に落下しても点火炉内平面でみた場合に燃料が均
一に分散せずに特定のパターンに基くムラが生じ
て、パレツトの長さ方向及び幅方向における熱量
にバラツキが生じ、このため得られる焼結鉱の品
質に悪影響を及ぼすという問題がある。 This technology focuses on the fact that the ignition temperature of charcoal is lower than the ignition temperature of coke, but when the blended raw material layer with charcoal evenly spread on its surface enters the ignition furnace, the flame of the burner turns it into charcoal powder. Even if the fuel flies up and falls back onto the bed surface due to the airflow inside the furnace, the fuel will not be dispersed uniformly when viewed from the plane inside the ignition furnace, and unevenness will occur based on a specific pattern, causing unevenness in the length direction of the pallet and There is a problem that variations occur in the amount of heat in the width direction, which adversely affects the quality of the sintered ore obtained.
この問題は、点火炉の前に予熱炉を設けてこの
予熱炉内に大量の熱風を吹き込んで配合原料表層
を乾燥、予熱する前述の予熱焼結法や、点火炉の
前段に熱風を導入するようにした炉を使用する焼
結法の場合には特に顕著に現われる問題であり改
善が望まれていた。 This problem can be solved by using the previously mentioned preheating sintering method, which installs a preheating furnace in front of the ignition furnace and blows a large amount of hot air into the preheating furnace to dry and preheat the surface layer of the blended raw materials, or by introducing hot air before the ignition furnace. This problem is especially noticeable in sintering methods that use such furnaces, and improvements have been desired.
（発明の目的）
本発明はこのような従来技術の問題点を有利に
解決するためになされたものである。(Object of the Invention) The present invention has been made to advantageously solve the problems of the prior art.
（発明の構成・作用）
本発明は、
(1) 配合原料供給装置と点火炉との間に、上流側
から表層撹拌装置、燃料添加装置、表層成形装
置を順に設けたことを特徴とする焼結機、およ
び
(2) 配合原料供給装置と点火炉との間に、上流側
から表層撹拌装置、燃料添加装置、表層混合装
置、表層成形装置を順に設けたことを特徴とす
る焼結機、である。(Structure and operation of the invention) The present invention provides: (1) A sintering device characterized in that a surface stirring device, a fuel addition device, and a surface forming device are provided in order from the upstream side between the mixed raw material supply device and the ignition furnace. and (2) a sintering machine, characterized in that a surface stirring device, a fuel addition device, a surface mixing device, and a surface forming device are provided in order from the upstream side between the mixed raw material supply device and the ignition furnace, It is.
以下図面に基いて本発明を説明する。 The present invention will be explained below based on the drawings.
第１図は本発明の実施例を示す焼結機の部分断
面図である。本発明は第１図に示すように、ホツ
パー１から切り出された配合原料２を、ドラムフ
イーダー３、スローピングプレート４を介してパ
レツト５内へ充填し、点火炉６で配合原料表層へ
点火し、下方に複数個設けたウインドボツクス７
を介して吸気することにより連続的に焼結鉱を製
造するドワイトロイド式焼結機において、ホツパ
ー１、ドラムフイダー、スローピングプレート４
等からなる配合原料供給装置２０と点火炉６との
間に、上流側から表層撹拌装置８、燃料添加装置
９及び表層成形装置１０を順に設けた構成とした
ものである。 FIG. 1 is a partial sectional view of a sintering machine showing an embodiment of the present invention. As shown in FIG. 1, in the present invention, mixed raw material 2 cut out from a hopper 1 is filled into a pallet 5 via a drum feeder 3 and a sloping plate 4, and the surface layer of the mixed raw material is ignited in an ignition furnace 6. , multiple wind boxes 7 provided below.
In a Dwight Lloyd type sintering machine that continuously produces sintered ore by sucking air through a hopper 1, a drum feeder, and a sloping plate 4,
A surface stirring device 8, a fuel addition device 9, and a surface forming device 10 are provided in this order from the upstream side between the mixed raw material supply device 20 and the ignition furnace 6.
前記表層撹拌装置８はパレツト幅方向に設けた
ローラの外周面に多数の突起を設けて、これらの
突起が配合原料表層に埋まるようにして、そのロ
ーラーを回転させ多数の突起により配合原料表層
を撹拌するタイプのものであつてもよい。 The surface layer stirring device 8 has a large number of protrusions on the outer peripheral surface of a roller provided in the width direction of the pallet, and rotates the roller so that the protrusions are buried in the surface layer of the mixed raw materials. It may be of a stirring type.
又、前記燃料添加装置９はホツパー９Ａ、ドラ
ムフイーダー９Ｂ、スローピングプレート９Ｃの
ように前記配合原料供給装置２０と同等の構造の
ものとしてもよいが、添加する燃料の層厚は配合
原料の層厚に比較して十分小さいので大掛りな装
置は必要とせず、又構造も上記の構造に限るもの
ではない。 Further, the fuel addition device 9 may have the same structure as the blended raw material supply device 20, such as a hopper 9A, a drum feeder 9B, and a sloping plate 9C, but the layer thickness of the added fuel depends on the layer thickness of the blended raw materials. Since it is sufficiently small compared to the thickness, a large-scale device is not required, and the structure is not limited to the above structure.
前記表層成形装置１０はローラーであつてよ
く、このローラーによつて配合原料表層のコーク
ス粉等の燃料を配合原料表層に密に圧着せしめ
る。 The surface forming device 10 may be a roller, and the roller tightly presses the fuel such as coke powder on the surface layer of the blended raw material onto the surface layer of the blended raw material.
配合原料表層に燃料を添加し焼結を行う技術は
前述のとおり公知の技術であるが、本発明は添加
する燃料が配合原料とよく馴み、剥離して飛散す
るような問題を無くするために、スローピングプ
レート４の下端で均された配合原料の表層を撹拌
装置８によつて撹拌し表層に多数の凹凸を形成さ
せた後に燃料を均一に添加するものであり、更に
燃料を添加した後は表層成形装置１０によつて押
圧する如く成形するものであるから、添加した燃
料は配合原料表層と密着しかつ圧着されるので、
点火炉６の前に予熱炉１１を設けた焼結機の場合
であつても予熱炉１１内で多量の高熱ガスにより
配合原料の表層が乾燥、予熱されても本発明装置
により添加した燃料は剥離したり飛散したりする
ことは少ない。 The technique of adding fuel to the surface layer of the blended raw materials and sintering is a well-known technology as described above, but the present invention is designed to ensure that the added fuel blends well with the blended raw materials and eliminates problems such as peeling and scattering. In this method, the surface layer of the blended raw materials that has been leveled at the lower end of the sloping plate 4 is stirred by the stirring device 8 to form many irregularities on the surface layer, and then fuel is added uniformly. Since the molding is performed by pressing with the surface molding device 10, the added fuel comes into close contact with the surface layer of the blended raw materials and is compressed.
Even in the case of a sintering machine in which a preheating furnace 11 is installed in front of the ignition furnace 6, even if the surface layer of the blended raw materials is dried and preheated by a large amount of high-temperature gas in the preheating furnace 11, the fuel added by the device of the present invention is Peeling or scattering is rare.
表層撹拌装置８によりパレツト上の配合原料２
Ａの表層を撹拌する深さは配合原料層厚の３〜30
％の範囲内とするのがよい。撹拌する深さが３％
未満の場合には撹拌の効果が十分でなく、又30％
を超えると表層部の撹拌の範囲を越え、ベツドの
中層を撹拌することになるのでベツドの通気性を
大巾に変えることになるので好ましくない。 The mixed raw materials 2 on the pallet are mixed by the surface stirring device 8.
The depth to which the surface layer of A is stirred is 3 to 30 mm of the layer thickness of the blended raw materials.
It is best to keep it within the range of %. Stirring depth is 3%
If it is less than 30%, the stirring effect is not sufficient, and if it is less than 30%
Exceeding this is not preferable, as it exceeds the range of agitation in the surface layer and agitates the middle layer of the bed, which greatly changes the air permeability of the bed.
又、表層成形装置１０による配合原料表層の成
形は表層撹拌装置８で撹拌される前の配合原料層
高と同程度の層高を保つような圧縮成形にとどめ
るのが望ましい。しかし燃料添加量や操業条件に
伴い圧縮量を変更する場合に好都合なように、本
発明に係る表層成形装置１０は上下動可能に設置
するのが望ましい。 Further, it is preferable that the surface layer of the compounded raw materials be formed by compression molding using the surface layer forming device 10 to maintain the same layer height as the layer height of the compounded raw materials before being stirred by the surface layer stirring device 8. However, it is preferable that the surface forming apparatus 10 according to the present invention be installed so as to be movable up and down, which is convenient when changing the compression amount depending on the amount of fuel added or operating conditions.
第２図は本発明の他の実施例を示す部分断面図
であり、第１図に示した本発明装置に加えて、燃
料添加装置９と表層成形装置１０との間に表層混
合装置１２を設けたものである。この表層混合装
置１２は表層撹拌装置８と同等の構造としてもよ
く、ローラーの外周に多数設ける突起の長さを表
層撹拌装置８のものより添加する燃料層厚分を考
慮し長目とするのが望ましい。 FIG. 2 is a partial sectional view showing another embodiment of the present invention, in which, in addition to the device of the present invention shown in FIG. It was established. This surface layer mixing device 12 may have the same structure as the surface layer stirring device 8, and the length of the protrusions provided on the outer periphery of the roller may be longer than that of the surface layer stirring device 8 in consideration of the thickness of the fuel layer to be added. is desirable.
本発明に係る表層混合装置１２は、燃料添加装
置９により配合原料表層へ添加したコークス粉等
の燃料をその下方の配合原料と混合するものであ
るから、表層成形装置１０で圧縮成形した後の配
合原料表層には燃料含有量の大な層が形成され、
２段装入を行つた場合と同等の配合原料層を形成
することができる。 The surface mixing device 12 according to the present invention mixes the fuel such as coke powder added to the surface layer of the blended raw material by the fuel addition device 9 with the blended raw material below, so that the surface layer mixing device 12 mixes the fuel such as coke powder added to the surface layer of the blended raw material by the fuel addition device 9 with the blended raw material below. A layer with a large fuel content is formed on the surface layer of the blended raw material,
It is possible to form a blended raw material layer equivalent to that in the case of two-stage charging.
本発明に係る燃料添加装置から供給する燃料は
コークス粉に限らず石炭粉、木炭粉等の固体燃料
はもとより重油等の液体燃料も使用可能である。 The fuel supplied from the fuel addition device according to the present invention is not limited to coke powder, but also solid fuels such as coal powder and charcoal powder, as well as liquid fuels such as heavy oil can be used.
（発明の効果）
以上述べたように、本発明の第１の発明によれ
ば、配合原料表層に燃料を密に圧着させ成形する
ものであるから、点火炉や予熱炉内で飛散するよ
うな問題が生じ難く、ベツド上層部に均等に熱を
与えつつ焼結することができるから、２段装入を
行う焼結機のように２系列の配合原料製造設備を
必要とせず、従つて経済的に良品質の焼結鉱を製
造できるという効果を奏する。(Effects of the Invention) As described above, according to the first aspect of the present invention, since the fuel is tightly pressed onto the surface layer of the blended raw materials and formed, there is no possibility that it will be scattered in the ignition furnace or preheating furnace. Problems are unlikely to occur and sintering can be performed while applying heat evenly to the upper layer of the bed, so there is no need for two lines of mixed raw material manufacturing equipment as in a sintering machine that charges in two stages, making it more economical. This has the effect of producing high-quality sintered ore.
又、本発明の第２の発明によれば、前記第１の
発明の効果に加えて配合原料表層に燃料含有量の
大な混合原料層を形成させることができ、経済的
でしかも２段装入焼結法に比較して勝るとも劣ら
ない良品質の焼結鉱が得られるという効果を奏す
る。 Further, according to the second invention of the present invention, in addition to the effects of the first invention, it is possible to form a mixed raw material layer with a large fuel content on the surface layer of the blended raw materials, which is economical and can be carried out in two stages. This method has the effect of producing sintered ore of comparable quality compared to the sintering method.
第１図は本発明の実施例を示す焼結機の部分断
面図、第２図は本発明の他の実施例を示す焼結機
の部分断面図。
１……ホツパー、２，２Ａ……配合原料、３…
…ドラムフイーダー、４……スローピングプレー
ト、６……点火炉、７……ウインドボツクス、８
……表層撹拌装置、９……燃料添加装置、１０…
…表層成形装置、１１……予熱炉、１２……表層
混合装置、２０……配合原料供給装置。
FIG. 1 is a partial sectional view of a sintering machine showing an embodiment of the present invention, and FIG. 2 is a partial sectional view of a sintering machine showing another embodiment of the invention. 1...Hopper, 2,2A...Blended raw materials, 3...
...Drum feeder, 4...Sloping plate, 6...Ignition furnace, 7...Wind box, 8
...Surface stirring device, 9...Fuel addition device, 10...
...Surface forming device, 11... Preheating furnace, 12... Surface mixing device, 20... Mixed raw material supply device.
Claims (1)
から表層撹拌装置、燃料添加装置、表層成形装置
を順に設けたことを特徴とする焼結機。 ２ 配合原料供給装置と点火炉との間に、上流側
から表層撹拌装置、燃料添加装置、表層混合装
置、表層成形装置を順に設けたことを特徴とする
焼結機。[Scope of Claims] 1. A sintering machine characterized in that a surface stirring device, a fuel addition device, and a surface forming device are provided in order from the upstream side between a mixed raw material supply device and an ignition furnace. 2. A sintering machine characterized in that a surface stirring device, a fuel addition device, a surface mixing device, and a surface forming device are provided in order from the upstream side between the mixed raw material supply device and the ignition furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24735583A JPS60140087A (en) | 1983-12-28 | 1983-12-28 | Sintering machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24735583A JPS60140087A (en) | 1983-12-28 | 1983-12-28 | Sintering machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60140087A JPS60140087A (en) | 1985-07-24 |
| JPS6310358B2 true JPS6310358B2 (en) | 1988-03-05 |
Family
ID=17162179
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24735583A Granted JPS60140087A (en) | 1983-12-28 | 1983-12-28 | Sintering machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60140087A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100402027B1 (en) * | 2000-12-21 | 2003-10-17 | 주식회사 포스코 | apparatus for pressing the upper material layer of sinter machine |
-
1983
- 1983-12-28 JP JP24735583A patent/JPS60140087A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60140087A (en) | 1985-07-24 |
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