JPH11351756A - Sintering material loader - Google Patents
Sintering material loaderInfo
- Publication number
- JPH11351756A JPH11351756A JP17818198A JP17818198A JPH11351756A JP H11351756 A JPH11351756 A JP H11351756A JP 17818198 A JP17818198 A JP 17818198A JP 17818198 A JP17818198 A JP 17818198A JP H11351756 A JPH11351756 A JP H11351756A
- Authority
- JP
- Japan
- Prior art keywords
- sintering
- raw material
- fine
- sintering raw
- opening
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は焼結パレット上へ焼
結原料を偏析装入するための装入装置に関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charging apparatus for segregating and charging a sintering raw material onto a sintering pallet.
【０００２】[0002]
【従来の技術】ＤＬ型焼結機においては、無端鎖状の焼
結パレットに原料装入装置によって焼結原料を装入し、
この装入原料層の表面に点火炉で着火すると共にウイン
ドボックスを介して排風機によって焼結原料層の上方部
の空気を下方に吸引することにより、焼結パレットの移
動に伴い焼結原料中に配合されたコークスが燃焼し、順
次、焼結原料の焼結がおこなわれ、排鉱部で焼結パレッ
トより排出される。この装入装置にて焼結パレット上に
装入された焼結原料の上層部は、保熱効果が少なく、急
冷等により脆弱な焼結鉱となるため、下層部に比し燃料
分（カーボン）を多く、かつ粒度が小さくなるように偏
析装入することが焼結鉱の品質及び生産性を向上させる
のに効果的であることは周知である。従来より、図３に
示すように、焼結原料の装入装置６は、装入シュート４
を設け、この装入シュート４の下端より落下する焼結原
料１１に向かって気体を吹き付けて粗粒と微・細粒に分
離するノズル１０を装入シュート４の下方に設けて構成
し、これにより装入シュート４より落下する焼結原料１
１に気体を吹き付けて焼結原料１１を粒度偏析させてい
る。また、焼結パレット５の上層に装入する微・細粒焼
結原料の量を増加するためには、気体の吹き付け量を増
加すればよいが、装入シュート４下端より落下する焼結
原料１１全体に一様に気体を吹き付けており、上層の細
粒化が進むと同時に下層の粗粒化も進み、下層から上層
に向かって直線的に層全体が偏析する。このため、図
４、図５に示すように、気体の吹き付け量を増加（０、
１２０、２４０ｍ3 ／分）すると、上層への熱源偏析は
促進される反面、下層の熱源（カーボン）が不足する。
この下層の熱源が不足すると焼結鉱の焼成不足が生じ、
歩留、強度を低下させてしまうため、下層においても燃
焼に必要な一定量以上のカーボンを確保する必要があ
る。よって、気体の吹き付け量は、ある程度までしか増
加させられない。気体の吹き付け量増加は一定の効果は
あるものの、その吹き付け量の増加には限界があるた
め、上層原料の微・細粒量及びカーボン量の増加は一定
量までに制限されてしまい、充分に微・細粒量及びカー
ボン量を増加するまでには至らずに、焼結後の焼結鉱の
歩留、強度向上を十分に図っているとは言い難いもので
あった。2. Description of the Related Art In a DL type sintering machine, a sintering raw material is charged into an endless chain-shaped sintering pallet by a raw material charging device.
The surface of the charged raw material layer is ignited by an ignition furnace, and the air above the sintering raw material layer is sucked downward by a blower through a wind box. The sintering raw material is sequentially fired, and is discharged from a sintering pallet in an ore mining section. The upper portion of the sintering raw material charged on the sintering pallet by this charging device has little heat retention effect and becomes brittle sinter due to rapid cooling or the like. ) Is well known to be effective in improving the quality and productivity of the sinter ore by adding segregation so as to reduce the particle size. Conventionally, as shown in FIG.
A nozzle 10 for blowing gas toward the sintering raw material 11 falling from the lower end of the charging chute 4 to separate coarse particles into fine particles and fine particles is provided below the charging chute 4. Sintering raw material 1 falling from charging chute 4
1 is blown with a gas to segregate the sintering raw material 11 in particle size. Further, in order to increase the amount of the fine / fine-grained sintering raw material to be charged into the upper layer of the sintering pallet 5, the amount of gas blown may be increased. The gas is sprayed uniformly on the entire surface of the layer 11, so that the upper layer becomes finer and the lower layer becomes coarser at the same time, and the entire layer is segregated linearly from the lower layer toward the upper layer. Therefore, as shown in FIGS. 4 and 5, the amount of gas blown is increased (0,
(120, 240 m 3 / min), heat source segregation into the upper layer is promoted, but the heat source (carbon) in the lower layer is insufficient.
If the heat source of this lower layer is insufficient, insufficient sintering of the sinter occurs,
Since the yield and strength decrease, it is necessary to secure a certain amount or more of carbon necessary for combustion even in the lower layer. Therefore, the blowing amount of the gas can be increased only to a certain extent. Although the increase in the amount of gas spray has a certain effect, the increase in the amount of spray is limited, so the increase in the amount of fine and fine particles in the upper layer material and the amount of carbon is limited to a certain amount. It was hard to say that the yield and strength of the sintered ore after sintering were sufficiently improved without increasing the amount of fine and fine particles and the amount of carbon.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、簡単な設備
構成により焼結パレット上に装入した焼結原料の上層部
の微・細粒量及びカーボン量をさらに増加させることに
より焼結鉱の歩留、強度を向上させる焼結原料の装入装
置を提供することを課題とするものである。SUMMARY OF THE INVENTION The present invention provides a sinter ore by further increasing the amount of fine and fine particles and the amount of carbon in the upper layer of a sintering raw material charged on a sintering pallet with a simple equipment configuration. It is an object of the present invention to provide an apparatus for charging a sintering raw material which improves the yield and strength of the sintering.
【０００４】[0004]
【課題を解決するための手段】本発明は、上記課題を解
決するためになされたものであり、その手段１の焼結原
料の装入装置は、下端に切り出しフィーダーを設けると
共に焼結原料を貯槽したホッパーと、前記切り出しフィ
ーダーから供給される焼結原料の供給位置下流側に開口
部を設けた装入シュートと、該装入シュートの開口部よ
り落下せずに、該装入シュート上を滑降した粗粒焼結原
料を焼結パレット上に装入し、前記開口部を通過して落
下した微・細粒焼結原料を前記焼結パレット上の粗粒焼
結原料の表層上に装入する焼結原料の装入装置におい
て、前記開口部の上方に、該開口部上を滑降する焼結原
料に向かって気体を吹き付け、微・細粒焼結原料を開口
部より下方に落下させる第１の気体吹き付けノズルを設
け、前記開口部より前記焼結パレット上の粗粒焼結原料
の表層上に落下中の微・細粒焼結原料に気体を吹き付け
て微粒と細粒に分離する第２の気体吹き付けノズルを前
記下流側の装入シュートの下部に設け、その分離した細
粒焼結原料を前記焼結パレット上の粗粒焼結原料表層上
に装入し、その上層に前記分離した微粒焼結原料を装入
するものである。また、上記手段において更に、手段２
の焼結原料の装入装置は、前記開口部の上方に設けた前
記第１の気体吹き付けノズルを、垂直下向きに設け、該
開口部上を滑降する焼結原料に向かって垂直下向きに気
体を吹き付けるものである。Means for Solving the Problems The present invention has been made to solve the above problems, and the sintering raw material charging device of the means 1 is provided with a cutout feeder at the lower end and a sintering raw material. The storage hopper, a charging chute provided with an opening on the downstream side of the supply position of the sintering raw material supplied from the cutting feeder, and the charging chute without falling from the opening of the charging chute. The sintered coarse-grained sintering raw material is charged on a sintering pallet, and the fine and fine-grained sintering material dropped through the opening is loaded on the surface layer of the coarse-grained sintering raw material on the sintering pallet. In the charging apparatus for the sintering raw material to be charged, gas is blown above the opening toward the sintering raw material sliding down on the opening, and the fine and fine sintering raw material is dropped below the opening. A first gas blowing nozzle is provided, and from the opening A second gas spray nozzle for blowing the gas to the fine and fine sintering raw material falling on the surface layer of the coarse sintering raw material on the sintering pallet to separate the fine and fine sintering raw material into the fine and fine particles is charged on the downstream side. Provided below the chute, the separated fine-grained sintering material is charged on the surface layer of the coarse-grained sintering material on the sintering pallet, and the separated fine-grained sintering material is charged on the upper layer. . Further, in the above means, furthermore, means 2
The sintering raw material charging device is provided with the first gas blowing nozzle provided above the opening vertically downward, and feeds gas vertically downward toward the sintering raw material sliding down on the opening. It sprays.
【０００５】[0005]
【表１】 [Table 1]
【０００６】装入シュート４上を滑降する焼結原料１１
に気体を吹き付けて粗粒と微・細粒に分離する場合（図
１参照）、焼結原料１１とこの中のコークス（カーボン
源）は表１に示すような粒度分布を有していることから
質量の軽い微粒の焼結原料及び微粒のコークス（以下、
この両者を単に微粒焼結原料１３と称す）ほど気体によ
る分級作用を受け易く、容易に焼結原料１１より分離さ
れる。よって、気体吹き付けによる分級方法では、常
に、分級対象原料の中で最も質量の軽い微粒焼結原料１
３が優先的に分級されることになる。よって、一旦、気
体吹き付けにより分級した微・細粒焼結原料１２に再
度、気体を吹き付ければ、微・細粒焼結原料１２の中で
さらに質量の軽い微粒焼結原料１３を分級することが出
来る。[0006] Sintering raw material 11 sliding down on charging chute 4
When sintering is performed to separate coarse particles into fine particles and fine particles (see FIG. 1), the sintering raw material 11 and the coke (carbon source) therein must have a particle size distribution as shown in Table 1. From fine sintering raw material and fine coke with light mass
These two are simply referred to as fine-grained sintering raw materials 13), so that they are more likely to be classified by the gas and are easily separated from the sintering raw materials 11. Therefore, in the classification method by gas blowing, the fine-grain sintered raw material 1 having the lightest mass among the raw materials to be classified is always used.
3 will be classified with priority. Therefore, once gas is sprayed again on the fine / fine-grained sintering raw material 12 classified by gas blowing, the fine-grained sintering raw material 13 having a lighter mass can be classified in the fine / fine-grained sintering raw material 12. Can be done.
【０００７】本発明者はこの点に着目し、先ず焼結原料
１１から微・細粒焼結原料１２（コークスを含む）のみ
を分級し、この分級した微・細粒焼結原料１２からさら
に微粒焼結原料１３を分級するために、図１に示すよう
に装入シュート４に開口部３を設け、開口部３の上を滑
降する焼結原料１１に向かって気体を吹き付ける第１の
気体吹き付けノズル１０を開口部３の上方に設けて、粗
粒焼結原料１６が開口部３より落下しない程度の風量を
吹き付けて上記滑降する焼結原料１１から微・細粒焼結
原料１２を分離し、さらに装入シュート４の下部に前記
開口部３より落下中の微・細粒焼結原料１２に向かって
横方向から気体を吹き付ける第２の気体吹き付けノズル
１０L を設けて微粒焼結原料１３を分離することによ
り、粗粒焼結原料１６の偏析にほとんど影響を与えずに
微粒焼結原料１３を焼結ベッドの最表層に確実に偏析さ
せることが可能となった。The present inventor pays attention to this point, and first classifies only the fine / fine-grained sintering material 12 (including coke) from the sintering raw material 11, and further classifies the fine / fine-grained sintering material 12 from the classified fine / fine-grained sintering material 12. In order to classify the fine-grained sintering raw material 13, an opening 3 is provided in the charging chute 4 as shown in FIG. 1, and a first gas is blown toward the sintering raw material 11 sliding down on the opening 3. A spray nozzle 10 is provided above the opening 3 to separate the fine and fine-grained sintering raw material 12 from the sintering raw material 11 sliding down by blowing an amount of air such that the coarse-grained sintering raw material 16 does not drop from the opening 3. and further second gas blowing fine sintered material provided with a nozzle 10 L for blowing gas from the transverse direction towards the fine-fine sintered material 12 in dropping from the opening 3 at the bottom of the charging chute 4 13 is separated into coarse-grained sintering raw material 1 A fine sintered material 13 without giving little effect on segregation has become possible to reliably segregate in the outermost layer of the sintering bed.
【０００８】また、開口部３の上方に設けた第１の気体
吹き付けノズル１０は、焼結原料１１から微・細粒焼結
原料１２（コークスを含む）を分級するためのノズルで
あり、第２の気体吹き付けノズル１０L は、微・細粒焼
結原料１２から微粒焼結原料１３を分級するためのノズ
ルであり、第１の気体吹き付けノズル１０により分級さ
れた微・細粒焼結原料１２は、気体の進行方向へ吹き飛
ばされるため、図６に示すように、第１の気体吹き付け
ノズル１０の垂直方向に対する設置角度（即ち気体吹き
付け角度）θがθ0 、θ1 、θ2 、θ3 と大きくなるほ
ど、微・細粒焼結原料１２が水平方向へ移動する速度が
大きくなる。一方、第２の気体吹き付けノズル１０L よ
り吹き付けた気体の水平方向の速度は、該ノズル１０L
より遠ざかるほど低下する。よって、前記設置角度θが
大きいほど微・細粒焼結原料１２が水平方向へ移動する
速度と第２の気体吹き付けノズル１０L の吹き付けた気
体の速度との速度差がＳ０、Ｓ１、Ｓ２、Ｓ３と小さく
なり、微粒焼結原料１３を分級し難くなる。即ち第２の
気体吹き付けノズル１０L による分級力は低減する。こ
のため、前記設置角度θを０度、すなわち第１の気体吹
き付けノズル１０を垂直下向きに設置し、微・細粒焼結
原料１２が水平方向へ移動する速度を０にすれば、微粒
焼結原料１３を最も効率良く分級することが可能であ
る。このように、第１及び第２の気体吹き付けノズル１
０、１０L を用いれば、焼結パレット５上の焼結原料１
１の下層、中層に装入される中粒焼結原料１５、粗粒焼
結原料１６、粗粒コークスの偏析へ殆ど影響を与えず
に、上層の細粒及び微粒の焼結原料を極端に増加できる
ため結果として、図７、図８に示すように焼結パレット
５上の焼結原料上層８U の細粒化及びカーボン（熱源）
の増加を図る事ができると共に焼結原料下層８L の微・
細粒焼結原料量、カーボン量の低減を緩和出来る。Further, a first gas blowing nozzle 10 provided above the opening 3 is a nozzle for classifying a fine / fine-grained sintering material 12 (including coke) from a sintering material 11. The second gas blowing nozzle 10 L is a nozzle for classifying the fine sintering raw material 13 from the fine / fine sintering raw material 12, and the fine / fine sintering raw material classified by the first gas blowing nozzle 10. 12 is blown off in the gas traveling direction, and as shown in FIG. 6, as the installation angle θ of the first gas blowing nozzle 10 with respect to the vertical direction (that is, the gas blowing angle) becomes θ0, θ1, θ2, θ3, the larger. In addition, the speed at which the fine and fine sintering raw material 12 moves in the horizontal direction increases. On the other hand, the velocity in the horizontal direction of the gas blown from the second gas blowing nozzle 10 L is 10 L
It decreases as the distance increases. Therefore, the speed difference between the speed and the rate of blowing gas in the second gas blowing nozzle 10 L of the installation angle θ the larger the fine-fine sintered material 12 is moved in the horizontal direction is S0, S1, S2, S3 becomes small, and it becomes difficult to classify the fine-grained sintering raw material 13. That classification force of the second gas blowing nozzle 10 L is reduced. Therefore, if the installation angle θ is 0 degree, that is, the first gas blowing nozzle 10 is installed vertically downward, and the speed at which the fine / fine-grained sintering raw material 12 moves in the horizontal direction is set to 0, It is possible to classify the raw material 13 most efficiently. Thus, the first and second gas blowing nozzles 1
If 0, 10 L is used, the sintering raw material 1 on the sintering pallet 5
1, the fine and fine sintering raw materials in the upper layer are extremely reduced without substantially affecting the segregation of the medium sintering raw material 15, coarse sintering raw material 16, and coarse coke charged in the lower and middle layers. as a result because it increases, 7, grain refining and carbon sintering material layer 8 U on sintering pallet 5 as shown in FIG. 8 (a heat source)
Of the sintering raw material lower layer 8 L
Reduction in the amount of fine-grain sintering raw material and carbon can be moderated.
【０００９】[0009]
【発明の実施の形態】次に本発明の各請求項に対応した
実施の形態について説明する。 ＜実施の形態１＞請求項１に対応した実施の形態１を、
図１にて説明する。図１は、切り出しフィーダー２の下
方に装入シュート４（巾：５０００ｍｍ）を設け、切り
出しフィーダー２から落下供給される上流側シュート４
U 上の焼結原料１１の落下位置９の下方に開口部３（開
口サイズ＝巾：５０００ｍｍ、長：５０〜３００ｍｍ）
を設け、上流側シュート４U 上を滑降して開口部３上に
達した焼結原料１１に向かって、吹き付け角度（設置角
度θ）４５度にて気体を吹き付ける第１の気体吹き付け
ノズルの一例であるノズル１０（風量：５０〜３００ｍ
3 ／分）を該開口部３の上方に設け、更に、開口部３を
通過して落下する微・細粒焼結原料１２に横方向から水
平に気体を吹き付ける第２の気体吹き付けノズルの一例
である下部ノズル１０L （風量：２０〜２００ｍ3 ／
分）を設置角度αを９０度として下流側シュート４L 下
部裏側に設けた焼結原料の装入装置６である。表１に示
す粒度分布を有する焼結原料１１をホッパーの一例であ
る給鉱ホッパー１内より切り出しフィーダー２で切り出
し、上流側シュート４U へ供給する。焼結原料１１は、
開口部３上に達した際にノズル１０によって気体を吹き
付けられ、中粒焼結原料（５〜１超ｍｍ）１５、及び粗
粒焼結原料（＋５超ｍｍ）１６は、開口部３より落下せ
ずに下流側シュート４L の上部に乗り、下流側シュート
４L 上を滑降して焼結パレット５へ層厚４５０〜６００
ｍｍ程度に装入される。一方、微・細粒焼結原料１２
（−１ｍｍ）は、開口部３上で気体の進行方向に沿って
飛ばされるため、開口部３を通過して落下し、落下中に
下部ノズル１０Lにより気体を吹き付けられ、微粒焼結
原料１３と細粒焼結原料１４に分離されて焼結パレット
５上の中粒焼結原料１５、粗粒焼結原料１６の表層上へ
層厚１０〜５０ｍｍ程度に装入される。その結果、焼結
パレット５上の装入原料層８の全層厚は４６０〜６５０
ｍｍ程度となる。DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments corresponding to the claims of the present invention will be described. <Embodiment 1> Embodiment 1 corresponding to claim 1 is replaced by
This will be described with reference to FIG. FIG. 1 shows a charging chute 4 (width: 5000 mm) provided below the cut-out feeder 2, and an upstream chute 4 supplied from the cut-out feeder 2.
The opening 3 (opening size = width: 5000 mm, length: 50 to 300 mm) below the drop position 9 of the sintering raw material 11 on the U
And an example of a first gas blowing nozzle that blows gas at a blowing angle (installation angle θ) of 45 degrees toward the sintering raw material 11 that has slid down on the upstream chute 4 U and has reached the opening 3. Nozzle 10 (air volume: 50 to 300 m
3 / min) is provided above the opening 3, and further, an example of a second gas blowing nozzle that blows gas horizontally and horizontally to the fine / fine-grained sintering raw material 12 falling through the opening 3. 10 L of lower nozzle (air volume: 20 to 200 m 3 /
Is the charging device 6 for the sintering raw material provided on the lower back side of the downstream chute 4 L with the setting angle α being 90 degrees. The sintered material 11 having a particle size distribution shown in Table 1 was excised with cut feeder 2 from Kyuko hopper within 1 as an example of the hopper, supplied to the upstream side chute 4 U. The sintering raw material 11
When the gas reaches the opening 3, a gas is blown by the nozzle 10, and the medium-grain sintering raw material (5 to more than 1 mm) 15 and the coarse-grained sintering material (+5 mm or more) 16 fall from the opening 3. take the top of the downstream chute 4 L without, thickness and downhill downstream chute 4 above L to sintering pallet 5 450-600
mm. On the other hand, fine and fine-grained sintering raw material 12
(-1 mm) is blown along the traveling direction of the gas on the opening 3, falls through the opening 3, is sprayed with the gas by the lower nozzle 10 L during the fall, and the fine sintering material 13 And the fine-grained sintering raw material 14 is charged into the surface layer of the medium-grained sintering raw material 15 and the coarse-grained sintering raw material 16 on the sintering pallet 5 in a layer thickness of about 10 to 50 mm. As a result, the total thickness of the charged raw material layer 8 on the sintered pallet 5 is 460 to 650.
mm.
【００１０】＜実施の形態２＞請求項２に対応した実施
の形態２を、図２にて説明する。図２は、図１の装入装
置６の開口部３上方のノズル１０を垂直下向きに設置し
た装入装置である。表１に示す粒度分布を有する焼結原
料１１を給鉱ホッパー１内より切り出しフィーダー２で
切り出し、上流側シュート４U へ供給する。焼結原料１
１は、開口部３上に達した際にノズル１０によって垂直
方向下向きに気体を吹き付けられ、中粒焼結原料（５〜
１超ｍｍ）１５、及び粗粒焼結原料（＋５超ｍｍ）１６
は、開口部３より落下せずに下流側シュート４L の上部
に乗り、下流側シュート４L上を滑降して焼結パレット
５へ層厚４５０〜６００ｍｍ程度に装入される。一方、
微・細粒焼結原料１２（−１ｍｍ）は、開口部３上で気
体の進行方向に沿って飛ばされるため、開口部３を通過
して落下し、落下中に設置角度αを９０度とした下部ノ
ズル１０L により気体を吹き付けられ、微粒焼結原料１
３と細粒焼結原料１４に分離されて焼結パレット５上の
中粒焼結原料１５、粗粒焼結原料１６の表層上へ層厚１
０〜５０ｍｍ程度に装入される。その結果、焼結パレッ
ト５上の装入原料層８の全層厚は４６０〜６５０ｍｍ程
度となる。尚、上記実施の形態１、２では、下部ノズル
１０L から吹く気体を水平方向としているが、本発明
は、これに限ることなく、若干、上向きにしても差し支
えないものである。<Embodiment 2> An embodiment 2 corresponding to claim 2 will be described with reference to FIG. FIG. 2 shows a charging device in which the nozzle 10 above the opening 3 of the charging device 6 of FIG. 1 is installed vertically downward. The sintered material 11 having a particle size distribution shown in Table 1 from Kyuko hopper within 1 cut by cutting out feeder 2, and supplies to the upstream chute 4 U. Sintering raw material 1
1 is blown vertically downward by the nozzle 10 by the nozzle 10 when the gas reaches the opening 3, and the medium-grain sintering raw material (
1) and coarse-grained sintering raw material (+5 mm) 16
Rides on top of the downstream chute 4 L without falling down from the opening 3, and downhill downstream chute 4 above L to sintering pallet 5 is charged to the thickness of about 450～600Mm. on the other hand,
Since the fine / fine-grained sintering raw material 12 (-1 mm) is blown over the opening 3 along the direction of gas flow, it falls through the opening 3 and drops, and during the fall, the installation angle α is 90 degrees. blown gas by the lower nozzle 10 L, fine sintered material 1
3 and the fine-grained sintering raw material 14 on the sintering pallet 5.
It is charged to about 0 to 50 mm. As a result, the total thickness of the charged raw material layer 8 on the sintered pallet 5 is about 460 to 650 mm. In the first and second embodiments, although the gas blowing from the bottom nozzle 10 L in the horizontal direction, the present invention is not limited to this, somewhat, in which no problem even if the upward.
【００１１】[0011]
【実施例】本発明の実施例を表１、表２を参照して説明
する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described with reference to Tables 1 and 2.
【００１２】[0012]
【表２】 [Table 2]
【００１３】表２中、Ａは請求項１の実施例、Ｂは請求
項２の実施例、Ｃは従来例である。また、ＤＬ型焼結機
の焼結パレット上に焼結原料を層厚が５５０ｍｍとなる
ように、表１に示す粒度分布を有する焼結原料を装入し
たものである。更に、各例は寸法が５０００ｍｍ（幅）
×１５０ｍｍ（長さ）の開口部を有する装入シュートを
用いたものである。実施例Ａ，Ｂに於いて使用した装入
装置は図１，図２に示すものであり、これにより焼結パ
レット上の焼結原料上層部に装入される微・細粒焼結原
料及びコークスを偏析して（多量に）装入することが出
来、良好な歩留、強度の焼結鉱を得ることが出来た。ま
た、従来例Ｃは図３の装入装置を用いた例であり、本発
明の実施例Ａ、Ｂに比して焼結歩留、焼結鉱の強度のい
ずれも悪いものであった。In Table 2, A is the embodiment of claim 1, B is the embodiment of claim 2, and C is the conventional example. Further, a sintering raw material having a particle size distribution shown in Table 1 was charged on a sintering pallet of a DL type sintering machine so that the layer thickness became 550 mm. Furthermore, each example has dimensions of 5000 mm (width)
A charging chute having an opening of × 150 mm (length) was used. The charging apparatus used in Examples A and B is shown in FIGS. 1 and 2, whereby the fine and fine-grained sintering raw material charged into the upper layer of the sintering raw material on the sintering pallet and Coke could be segregated (in large amounts) and charged, and a sintered ore with good yield and strength could be obtained. Further, Conventional Example C is an example using the charging apparatus of FIG. 3, and both the sintering yield and the strength of the sintered ore are lower than those of Examples A and B of the present invention.
【００１４】[0014]
【発明の効果】以上説明したように本発明は、焼結原料
に気体を吹き付けて、微・細粒焼結原料のみを開口部よ
り落下させ、さらに開口部より落下中の微・細粒焼結原
料に気体を吹き付けて微粒と細粒を分離することによ
り、焼結パレット上の焼結原料上層部の微・細粒焼結原
料量の増加を図ることが可能となり、焼結鉱の強度、歩
留の向上が可能となり、この分野における効果は大き
い。As described above, according to the present invention, a gas is blown to the sintering raw material to drop only the fine and fine sintering raw material from the opening, and further, the fine and fine sintering material falling from the opening is dropped. By blowing gas to the raw material to separate fine particles and fine particles, it is possible to increase the amount of fine and fine-grained sintering raw material in the upper layer of the sintering raw material on the sintering pallet, and to increase the strength of the sintered ore. Thus, the yield can be improved, and the effect in this field is great.
【図面の簡単な説明】[Brief description of the drawings]
【図１】本発明の実施の形態１に係る焼結原料の装入装
置の説明図である。FIG. 1 is an explanatory diagram of an apparatus for charging a sintering raw material according to Embodiment 1 of the present invention.
【図２】本発明の実施の形態２に係る焼結原料の装入装
置の説明図である。FIG. 2 is an explanatory view of an apparatus for charging a sintering raw material according to Embodiment 2 of the present invention.
【図３】従来例に係る焼結原料の装入装置の説明図であ
る。FIG. 3 is an explanatory view of an apparatus for charging a sintering raw material according to a conventional example.
【図４】従来法における層厚方向の微・細粒焼結原料の
偏析状態の説明図である。FIG. 4 is an explanatory view of a segregation state of a fine / fine grain sintering raw material in a layer thickness direction in a conventional method.
【図５】従来法における層厚方向のカーボンの偏析状態
の説明図である。FIG. 5 is an explanatory view of a segregation state of carbon in a layer thickness direction in a conventional method.
【図６】開口部の上方の第１の気体吹き付けノズルの設
置角度の説明図である。FIG. 6 is an explanatory diagram of an installation angle of a first gas blowing nozzle above an opening.
【図７】層厚方向の微・細粒焼結原料の偏析状態の説明
図である。FIG. 7 is an explanatory diagram of a segregation state of fine and fine grain sintering raw materials in a layer thickness direction.
【図８】層厚方向のカーボンの偏析状態の説明図であ
る。FIG. 8 is an explanatory diagram of a segregation state of carbon in a layer thickness direction.
１ 給鉱ホッパー ２ 切り出しフ
ィーダー ３ 開口部 ４ 装入シュー
ト ４U 上流側シュート ４L 下流側シ
ュート ５ 焼結パレット ６ 焼結原料の
装入装置 ８ 装入原料層 ８U 焼結原料
上層 ８L 焼結原料下層 ９ 焼結原料の
落下位置 １０ ノズル（第１の気体吹き付けノズル） １０L 下部ノズル（第２の気体吹き付けノズル） １１ 焼結原料 １２ 微・細粒
焼結原料 １３ 微粒焼結原料 １４ 細粒焼結
原料 １５ 中粒焼結原料 １６ 粗粒焼結
原料DESCRIPTION OF SYMBOLS 1 Mining hopper 2 Cutting feeder 3 Opening 4 Charging chute 4 U upstream chute 4 L downstream chute 5 Sintering pallet 6 Sintering raw material charging device 8 Charging raw material layer 8 U sintering raw material upper layer 8 L firing Lower layer of binding raw material 9 Drop position of sintering raw material 10 Nozzle (first gas blowing nozzle) 10 L Lower nozzle (second gas blowing nozzle) 11 Sintering raw material 12 Fine / fine sintering raw material 13 Fine sintering raw material 14 Fine grain sintering material 15 Medium grain sintering material 16
───────────────────────────────────────────────────── フロントページの続き (72)発明者 渡邉 一臣 大分県大分市大字西ノ洲１番地 新日本製 鐵株式会社大分製鐵所内 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Kazuomi Watanabe 1 Nishinosu, Oita, Oita City, Oita Prefecture Inside Nippon Steel Corporation Oita Works
Claims (2)
に焼結原料を貯槽したホッパーと、前記切り出しフィー
ダーから供給される焼結原料の供給位置下流側に開口部
を設けた装入シュートと、該装入シュートの開口部より
落下せずに、該装入シュート上を滑降した粗粒焼結原料
を焼結パレット上に装入し、前記開口部を通過して落下
した微・細粒焼結原料を前記焼結パレット上の粗粒焼結
原料の表層上に装入する焼結原料の装入装置において、 前記開口部の上方に、該開口部上を滑降する焼結原料に
向かって気体を吹き付け、微・細粒焼結原料を開口部よ
り下方に落下させる第１の気体吹き付けノズルを設け、
前記開口部より前記焼結パレット上の粗粒焼結原料の表
層上に落下中の微・細粒焼結原料に気体を吹き付けて微
粒と細粒に分離する第２の気体吹き付けノズルを前記下
流側の装入シュートの下部に設け、その分離した細粒焼
結原料を前記焼結パレット上の粗粒焼結原料表層上に装
入し、その上層に前記分離した微粒焼結原料を装入する
ことを特徴とする焼結原料の装入装置。A feeder provided with a cutout feeder at a lower end and storing a sintering raw material; a charging chute provided with an opening downstream of a supply position of the sintering raw material supplied from the cutout feeder; Without falling from the opening of the chute, the coarse-grained sintering raw material slid down on the charging chute is loaded on a sintering pallet, and the fine and fine-grained sintering raw material dropped through the opening is removed. An apparatus for charging a sintering raw material charged on a surface layer of coarse-grained sintering raw material on the sintering pallet, wherein a gas is blown above the opening toward the sintering raw material sliding down on the opening. Providing a first gas blowing nozzle for dropping the fine and fine sintering raw material below the opening;
A second gas blowing nozzle for blowing a gas onto the fine and fine sintering raw material falling onto the surface layer of the coarse sintering raw material on the sintering pallet from the opening to separate the fine and fine sintering material into fine particles and fine particles is provided at the downstream side. The separated fine-grained sintering material is placed on the surface layer of the coarse-grained sintering material on the sintering pallet, and the separated fine-grained sintering material is charged on the upper layer. A sintering raw material charging apparatus.
体吹き付けノズルを、垂直下向きに設けたことを特徴と
する請求項１記載の焼結原料の装入装置。2. The sintering raw material charging apparatus according to claim 1, wherein the first gas blowing nozzle provided above the opening is provided vertically downward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17818198A JP3902332B2 (en) | 1998-06-09 | 1998-06-09 | Sintering raw material charging equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17818198A JP3902332B2 (en) | 1998-06-09 | 1998-06-09 | Sintering raw material charging equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH11351756A true JPH11351756A (en) | 1999-12-24 |
| JP3902332B2 JP3902332B2 (en) | 2007-04-04 |
Family
ID=16044027
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17818198A Expired - Lifetime JP3902332B2 (en) | 1998-06-09 | 1998-06-09 | Sintering raw material charging equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3902332B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006189202A (en) * | 2005-01-06 | 2006-07-20 | Nippon Steel Corp | Dust collector for sinter charging apparatus |
| JP2021042436A (en) * | 2019-09-11 | 2021-03-18 | 日本製鉄株式会社 | Method for producing sintered ore |
-
1998
- 1998-06-09 JP JP17818198A patent/JP3902332B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006189202A (en) * | 2005-01-06 | 2006-07-20 | Nippon Steel Corp | Dust collector for sinter charging apparatus |
| JP2021042436A (en) * | 2019-09-11 | 2021-03-18 | 日本製鉄株式会社 | Method for producing sintered ore |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3902332B2 (en) | 2007-04-04 |
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