JPH0343599Y2 - - Google Patents
Info
- Publication number
- JPH0343599Y2 JPH0343599Y2 JP1986041610U JP4161086U JPH0343599Y2 JP H0343599 Y2 JPH0343599 Y2 JP H0343599Y2 JP 1986041610 U JP1986041610 U JP 1986041610U JP 4161086 U JP4161086 U JP 4161086U JP H0343599 Y2 JPH0343599 Y2 JP H0343599Y2
- Authority
- JP
- Japan
- Prior art keywords
- raw material
- pallet
- chute
- charging device
- sintering
- 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 37
- 238000005245 sintering Methods 0.000 claims description 25
- 239000010410 layer Substances 0.000 description 20
- 239000002344 surface layer Substances 0.000 description 13
- 239000002245 particle Substances 0.000 description 7
- 239000011295 pitch Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 239000010419 fine particle Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
（産業上の利用分野）
本考案は、焼結原料の装入装置に関するもので
ある。
（従来の技術）
一般に、焼結鉱はDL式焼結機により製造され
る。詳しくは焼結配合原料がDL式焼結機の原料
装入装置より、エンドレスのパレツト上に装入さ
れ、装入装置の下流のパレツト上に配置された点
火炉で、パレツト内の装入原料層の表層部に着
火、点火されて焼結機排鉱部に至るまでに焼結さ
れ、焼結鉱となつて焼結機排鉱部より排出され
る。そして良好なる品質の焼結鉱を高生産性で製
造するためには、焼結配合原料のパレツト内への
装入段階において、パレツト内装入原料層に適当
な粒度偏析が得られるようにすること、即ち原料
の粗粒は下層に、細粒は上層になるようにするこ
とが要求される。
このような要求に対して、従来、例えば実開昭
60−77999号及び実開昭60−155894号公報には、
第１、２図に示す如く、ホツパー１からドラムフ
イーダー２を介して焼結原料を焼結機パレツト３
上に供給する焼結原料の装入装置において、上記
フイーダー２から落下する焼結原料を受けて傾斜
滑降せしめるシユート４の下端と上記パレツト３
との間で上記シユート４面の略延長線上に、第３
図に示す如く等間隔（等ピツチ）で複数本のロー
プ又はロツド５をパレツト３巾方向に配設して、
スリツト巾ａを一定の複数のスリツト状開口６に
形成させると共に第１，２図に示す如く上記ロー
プ又はロツド５に付着する原料を掻き落し除去す
るスクレーパー７を配設してなる焼結原料の装入
装置が提案されている。
このような装入装置によれば、ホツパー１から
ドラムフイーダー２を経て供給される焼結配合原
料は、シユート４上に落下しシユート４の傾斜面
に沿つてロープ又はロツド５群を通過する。その
とき原料の細粒はロープ又はロツド５群のスリツ
ト状開口６を通つて、パレツト３内へ落下し、粗
粒はロープ又はロツド５群上を移動してロープ又
はロツド５群下端よりパレツト３内へ落下するの
で、第４図に実線で示す如くパレツト内焼結原料
層の上下方向の平均粒度及びフリーカーボン濃度
分布が、上層が細粒及び高濃度で、下層が粗粒及
び低濃度となり、良好なる品質の焼結鉱を高生産
性で製造することができる。
尚、第４図の破線は、同一の原料供給速度、焼
結原料条件で、上記装置のロープ又はロツド群部
を盲板シユートとした従来の装入装置を使用して
装入した時のパレツト内焼結原料層の上下方向の
平均粒度及びフリーカーボン濃度分布を示したも
のである。
（考案が解決しようとする問題点）
しかしながら、上記等ピツチで複数のロープ又
はロツドを配設し、スリツト巾を一定とした複数
のスリツト状開口を形成した焼結原料の装入装置
によつて、パレツト内に装入された装入原料層の
表層部（表面下10mm程度の層部分）は、粗粒比率
が高くて細粒比率が低くなつていることがわかつ
た。
また、このように表層部の粗粒比率が高くて細
粒比率が低いと、コークス炉ガス（以下COGと
いう）を燃料とするバーナーを有する点火炉によ
る表層部着火性が悪く、表層部着火に要する
COG量が増加し点火炉COG原単位（Ｎm3／Ｔ−
Ｓ）が高くなつていることもわかつた。
本考案は、装入原料層の表層部の粗粒比率を低
下させると共に細粒比率を増加せしめて、点火炉
による表層部着火性を向上させ、もつて点火炉の
COG原単位を低下させることができる焼結原料
の装入装置を提供するものである。
（問題点を解決するための手段）
本考案の要旨は、次の通りである。
ホツパーのフイーダーから落下する焼結原料を
受けて傾斜滑降せしめるシユートの下端と焼結機
パレツトとの間で上記シユート面の略延長線上に
所定のピツチで複数本のロープ又はロツドをパレ
ツト巾方向に配設して複数のスリツト状開口を形
成してなる焼結機の原料装入装置において、上記
ロープ又はロツドの配設ピツチを上記パレツト側
よりも上記シユート側を密ピツチとして上記スリ
ツト状開口群のスリツト巾を上記パレツト側より
も上記シユート側を狭巾としたことを特徴とする
焼結原料の装入装置。
（作用）
第５図は、本考案の一実施例装置を示し、第１
図の装入装置のロープ又はロツド群部の拡大図を
示したものであり、ロープ又はロツド５の配設ピ
ツチを、パレツト３側よりもシユート４側を密ピ
ツチとして、スリツト状開口６群のスリツト巾ａ
を、パレツト３側よりもシユート４側を狭巾とし
たものである。
第１図に示す如く焼結原料の装入装置は、シユ
ート４側のスリツト状開口６を通過し落下した焼
結配合原料がパレツト３内焼結原料層８の最上部
（表層部）を形成するものであるから、前記の如
く（第５図の如く）シユート４側のロープ又はロ
ツド５の配設ピツチをパレツト３側よりも密ピツ
チとして、スリツト状開口６をパレツト３側より
も狭巾とすることにより、原料装入過程におい
て、粗粒のシユート４側のスリツト状開口６群通
過が阻止されるので、相対的に上記原料層８の最
上部（表層部）の細粒比率が増大すると共に粗粒
比率が低下する。
この結果焼結原料層の点火炉による表層部の着
火性が向上して、点火炉COG原単位を有効に低
下させることができる。
（実施例）
シユート４側の８本のワイヤーロープ５を25mm
ピツチで配設して、シユート４側のスリツト状開
口巾ａを17mmとすると共にパレツト３側の19本の
ワイヤーロープ５を35mmピツチで配設して、パレ
ツト３側のスリツト状開口巾ａを27mmとした装入
装置（本考案装置）を使用して、第１表に粒度分
布を示す粉コークスを3.4％配合した、同表に示
す粒度分布の焼結配合原料を、原料供給速度
280T／Ｈで、600mm層厚に装入した。
(Field of Industrial Application) The present invention relates to a charging device for sintering raw materials. (Prior Art) Generally, sintered ore is manufactured using a DL type sintering machine. Specifically, the sintering compound raw materials are charged onto an endless pallet from the raw material charging device of the DL type sintering machine, and the charged raw materials in the pallet are charged in the ignition furnace placed on the pallet downstream of the charging device. The surface layer of the layer is ignited and sintered before reaching the sintering machine discharge section, and is discharged from the sintering machine discharge section as sintered ore. In order to manufacture sintered ore of good quality with high productivity, it is necessary to obtain appropriate particle size segregation in the raw material layer inside the pallet at the stage of charging the sintered mixed raw materials into the pallet. That is, it is required that the coarse grains of the raw material be in the lower layer and the fine grains in the upper layer. In response to such demands, conventional methods such as Jitsukaisho
60-77999 and Utility Model Application Publication No. 60-155894,
As shown in Figures 1 and 2, sintering raw materials are fed from a hopper 1 via a drum feeder 2 to a sintering machine pallet 3.
In the charging device for the sintering raw material to be supplied above, the lower end of the chute 4 that receives the sintering raw material falling from the feeder 2 and makes it slide down the slope and the pallet 3
On the approximate extension line of the four sides of the chute, there is
As shown in the figure, a plurality of ropes or rods 5 are arranged at equal intervals across the width of the pallet,
The sintered raw material is formed by forming a plurality of slit-like openings 6 having a constant slit width a, and by disposing a scraper 7 for scraping off the raw material adhering to the rope or rod 5 as shown in FIGS. 1 and 2. A charging device has been proposed. According to such a charging device, the sintered compound raw material supplied from the hopper 1 via the drum feeder 2 falls onto the chute 4 and passes through 5 groups of ropes or rods along the inclined surface of the chute 4. . At that time, the fine grains of the raw material fall into the pallet 3 through the slit-like openings 6 of the ropes or rods 5, and the coarse grains move on the ropes or rods 5 and fall into the pallet 3 from the lower end of the ropes or rods 5. As a result, as shown by the solid line in Figure 4, the average particle size and free carbon concentration distribution in the vertical direction of the sintered raw material layer within the pallet are fine particles and high concentration in the upper layer, and coarse particles and low concentration in the lower layer. , it is possible to produce sintered ore of good quality with high productivity. The broken line in Fig. 4 shows the pallet when charged using a conventional charging device in which the rope or rod group section of the above device is a blind plate chute at the same material supply rate and sintering material conditions. This figure shows the average particle size and free carbon concentration distribution in the vertical direction of the inner sintering raw material layer. (Problem to be solved by the invention) However, the sintering raw material charging device has a plurality of ropes or rods arranged at the same pitch as described above, and a plurality of slit-like openings with a constant slit width. It was found that the surface layer of the raw material layer charged into the pallet (the layer approximately 10 mm below the surface) had a high proportion of coarse particles and a low proportion of fine particles. In addition, if the coarse grain ratio in the surface layer is high and the fine grain ratio is low, the surface layer ignition performance in an ignition furnace equipped with a burner that uses coke oven gas (hereinafter referred to as COG) as fuel is poor, and the surface layer ignition is difficult. It takes
COG amount increases and ignition furnace COG basic unit (Nm 3 /T-
It was also found that S) was increasing. The present invention reduces the coarse grain ratio in the surface layer of the charging material layer and increases the fine grain ratio, thereby improving the ignition performance of the surface layer in the ignition furnace.
The present invention provides a sintering raw material charging device that can reduce COG consumption. (Means for solving the problems) The gist of the present invention is as follows. Between the lower end of the chute, which receives the sintered raw material falling from the feeder of the hopper and slides it down the slope, and the sintering machine pallet, a plurality of ropes or rods are run at a predetermined pitch in the width direction of the pallet approximately on the extension line of the chute surface. In a raw material charging device for a sintering machine, the group of slit-shaped openings is arranged such that the rope or rod is arranged in a denser pitch on the chute side than on the pallet side. A sintering raw material charging device characterized in that the slit width is narrower on the chute side than on the pallet side. (Function) FIG. 5 shows an embodiment of the device of the present invention.
This is an enlarged view of the group of ropes or rods in the charging device shown in the figure. Slit width a
The chute 4 side is narrower than the pallet 3 side. As shown in FIG. 1, the sintering raw material charging device is configured so that the sintering mixture raw material that passes through the slit-shaped opening 6 on the chute 4 side and falls forms the top (surface layer) of the sintered raw material layer 8 in the pallet 3. Therefore, as mentioned above (as shown in Fig. 5), the pitch of the ropes or rods 5 on the chute 4 side is set closer than that on the pallet 3 side, and the slit-like openings 6 are made narrower than on the pallet 3 side. By doing this, during the raw material charging process, coarse grains are prevented from passing through the slit-like openings 6 on the chute 4 side, so the proportion of fine grains at the top (surface layer) of the raw material layer 8 is relatively increased. At the same time, the coarse grain ratio decreases. As a result, the ignitability of the surface layer portion of the sintered raw material layer by the ignition furnace is improved, and the ignition furnace COG basic unit can be effectively reduced. (Example) The 8 wire ropes 5 on the chute 4 side are 25mm
The slit-like opening width a on the chute 4 side is 17 mm, and the 19 wire ropes 5 on the pallet 3 side are arranged at a pitch of 35 mm, so that the slit-like opening width a on the pallet 3 side is 17 mm. Using a charging device with a diameter of 27 mm (device of the present invention), a sintered blended raw material with a particle size distribution shown in Table 1 containing 3.4% of coke powder with a particle size distribution shown in Table 1 was fed at a feed rate of 27 mm.
It was charged at 280T/H to a layer thickness of 600mm.
【表】
この装入原料層の上下方向の粒度分布を第６図
に白丸で示した。
尚、第６図には、比較のため24本のワイヤーロ
ープを35mmピツチの等ピツチで配設して、スリツ
ト状開口巾ａを27mm一定とした装入装置（従来装
置）を使用して、第１表の焼結配合原料を同一供
給速度で、同一層厚に装入した時の粒度分布を黒
丸で併記した。
この第６図から明らかなように、本考案の装入
装置は従来の装入装置に比べて、装入原料層の表
層部において、着火性の優れた−１mm及び１〜２
mmの細粒比率が増大していると共に着火性の悪い
３〜４mmの粗粒比率が低下している。
第７図は、点火炉のCOG原単位の推移を示し
たものであり、Ａ期間は従来装置使用時、Ｂ期間
は本考案装置使用時を示す。
この第７図より明らかなように、本考案装置
は、点火炉のCOG原単位を従来装置に対して0.21
（Ｎm3／Ｔ−Ｓ）低下することができている。
（考案の効果）
以上詳述したように、本考案の焼結原料の装入
装置によれば、装入原料層の表層部の細粒比率が
増大できると共に粗粒比率を低下させることがで
きて、上記表層部の着火性が改善でき、点火炉の
COG原単位を有効に低減できるものである。[Table] The particle size distribution in the vertical direction of this charging raw material layer is shown in FIG. 6 by white circles. For comparison, Fig. 6 shows a charging device (conventional device) in which 24 wire ropes were arranged at equal pitches of 35 mm and the slit opening width a was constant at 27 mm. The particle size distribution when the sintering compound raw materials in Table 1 were charged at the same feeding speed and the same layer thickness is also shown in black circles. As is clear from FIG. 6, the charging device of the present invention has excellent ignitability at -1 mm and 1 to 2 mm in the surface layer of the charging material layer compared to the conventional charging device.
The ratio of fine grains of 3 mm to 4 mm, which have poor ignitability, is decreasing, while the ratio of coarse grains of 3 to 4 mm, which have poor ignitability, is increasing. Figure 7 shows the change in the COG consumption rate of the ignition furnace, with period A showing when the conventional device was used, and period B showing when the device of the present invention was used. As is clear from Fig. 7, the device of the present invention has a COG consumption rate of 0.21 compared to the conventional device.
(Nm 3 /T-S). (Effects of the invention) As detailed above, according to the sintering raw material charging device of the present invention, the fine grain ratio in the surface layer of the charging raw material layer can be increased and the coarse grain ratio can be reduced. This improves the ignitability of the surface layer and improves the ignition furnace.
This can effectively reduce COG basic unit.
第１，２図は、従来及び本考案の装入装置の共
通部分の説明図、第３図は従来の装入装置の説明
図、第４図ａ，ｂは従来装置の効果の説明図、第
５図は本考案の装入装置の説明図、第６図ａ，
ｂ，ｃ，ｄ、第７図は本考案の装入装置の効果の
説明図である。
１……ホツパー、２……ドラムフイーダー、３
……パレツト、４……シユート、５……ロープ又
はロツド、６……スリツト状開口、７……スクレ
ーパー、８……焼結原料層。
1 and 2 are explanatory diagrams of the common parts of the conventional charging device and the present invention, FIG. 3 is an explanatory diagram of the conventional charging device, and FIGS. 4 a and b are explanatory diagrams of the effects of the conventional device, Figure 5 is an explanatory diagram of the charging device of the present invention, Figure 6a,
Figures b, c, d and 7 are explanatory diagrams of the effects of the charging device of the present invention. 1...Hopper, 2...Drum feeder, 3
...Pallet, 4...Chute, 5...Rope or rod, 6...Slit-shaped opening, 7...Scraper, 8...Sintering raw material layer.
Claims (1)
受けて傾斜滑降せしめるシユートの下端と焼結機
パレツトとの間で上記シユート面の略延長線上に
所定のピツチで複数本のロープ又はロツドをパレ
ツト巾方向に配設して複数のスリツト状開口を形
成してなる焼結機の原料装入装置において、上記
ロープ又はロツドの配設ピツチを上記パレツト側
よりも上記シユート側を密ピツチとして上記スリ
ツト状開口群のスリツト巾を上記パレツト側より
も上記シユート側を狭巾としたことを特徴とする
焼結原料の装入装置。 Between the lower end of the chute, which receives the sintered raw material falling from the feeder of the hopper and slides it down the slope, and the sintering machine pallet, a plurality of ropes or rods are run at a predetermined pitch in the width direction of the pallet approximately on the extension line of the chute surface. In a raw material charging device for a sintering machine, the group of slit-shaped openings is arranged such that the rope or rod is arranged in a denser pitch on the chute side than on the pallet side. A sintering raw material charging device characterized in that the slit width is narrower on the chute side than on the pallet side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986041610U JPH0343599Y2 (en) | 1986-03-20 | 1986-03-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986041610U JPH0343599Y2 (en) | 1986-03-20 | 1986-03-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62154399U JPS62154399U (en) | 1987-09-30 |
| JPH0343599Y2 true JPH0343599Y2 (en) | 1991-09-12 |
Family
ID=30856768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986041610U Expired JPH0343599Y2 (en) | 1986-03-20 | 1986-03-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0343599Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2608425B2 (en) * | 1987-10-14 | 1997-05-07 | 新日本製鐵株式会社 | Loading method of sintering raw material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6160834A (en) * | 1984-08-31 | 1986-03-28 | Sumitomo Metal Ind Ltd | Method and equipment for charging raw material of dl type sinter machine |
-
1986
- 1986-03-20 JP JP1986041610U patent/JPH0343599Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6160834A (en) * | 1984-08-31 | 1986-03-28 | Sumitomo Metal Ind Ltd | Method and equipment for charging raw material of dl type sinter machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62154399U (en) | 1987-09-30 |
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