JP3889142B2 - Raw material breathability homogenizer in the width direction of a sintering machine and method for producing a sintered ore - Google Patents

Raw material breathability homogenizer in the width direction of a sintering machine and method for producing a sintered ore Download PDF

Info

Publication number
JP3889142B2
JP3889142B2 JP912898A JP912898A JP3889142B2 JP 3889142 B2 JP3889142 B2 JP 3889142B2 JP 912898 A JP912898 A JP 912898A JP 912898 A JP912898 A JP 912898A JP 3889142 B2 JP3889142 B2 JP 3889142B2
Authority
JP
Japan
Prior art keywords
raw material
width direction
screw
type
groove
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 - Fee Related
Application number
JP912898A
Other languages
Japanese (ja)
Other versions
JPH11211355A (en
Inventor
隆志 渡辺
秀明 佐藤
公徳 坂井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JFE Steel Corp
Original Assignee
JFE Steel Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by JFE Steel Corp filed Critical JFE Steel Corp
Priority to JP912898A priority Critical patent/JP3889142B2/en
Publication of JPH11211355A publication Critical patent/JPH11211355A/en
Application granted granted Critical
Publication of JP3889142B2 publication Critical patent/JP3889142B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Landscapes

  • Manufacture And Refinement Of Metals (AREA)

Description

【0001】
【発明の属する技術分野】
本発明は、焼結機のスクリ−ン式シュ−トによって生じる焼結原料層の上部の溝を埋めパレット幅方向の通気性のバラツキをなくすための焼結原料表層部の均し装置および焼結鉱の製造方法に関するものである。
【0002】
【従来の技術】
焼結機パレット上に焼結原料(以下、単に原料という)を装入する際、パレット下部に粗粒原料、上部に細粒原料を堆積させることにより原料層全体の通気性を改善する目的で開発された原料装入装置が特開平5−1335号公報に開示されている。この装置はワイヤ−等の線状部材とそれを支持するガイド部材から構成されたスクリ−ン式シュ−トである。このガイド部材はパレット幅方向に数箇所設けられるが、原料の流れを阻害するため、ガイド部材の直下では原料の堆積量が他の部分に比べて少なくなり、原料層に層厚の薄い溝ができる。この溝はその周辺の原料の流れ込みにより形成されるので原料密度も小さくなる。このようにして形成された原料層ではパレット幅方向において、溝の部分の通気性が他の部分に比べて高くなりその方向の通気性にバラツキが生じる。それが大きくなるとコ−クスの未燃焼部が発生し、そのため焼結歩留りの低下、品質の低下およびコ−クス原単位の上昇等の問題が生じる。
【0003】
従来この問題を解決するために本発明者等は、スクリ−ン式シュ−トとカットオフプレ−トとの間に複数のV字形状の掻き寄せ体を有するスクレ−パ−を提案している(特願平8−93944号)。
【0004】
また、パレット幅方向において、装入原料の表層部の密度を高めることなく、原料厚さを調整できる装置としてパレット上方に高さと傾斜角が調整可能な一対のスクリュ−羽根をパレットの幅方向に亙って設けた装置が開示されている(特開平8−136152号)。
【0005】
【発明が解決しようとする課題】
特願平8−93944号のV字形状の掻き寄せ体を有するスクレ−パ−では、掻き寄せ体が固定式のため掻き寄せ体の前面には大なり小なり常に原料の盛り上がりが形成される。このため、パレットの幅方向で平滑な表面を形成できるが、掻き寄せ体の前面の原料盛り上がり部分の直下部では、上方から押圧が懸かることになり、幅方向において密度のバラツキが生じる。これにより、未焼部分(未焼結の部分の略)の生成、歩留りの低下、品質の低下およびコ−クス原単位の上昇の問題は依然として残る。
【0006】
また、特開平8−136152号のスクリュ−羽根を掻き寄せ体として利用すると、パレット中心部から両端部へ原料を掻き寄せるから、原料表層に押圧を懸けることなく溝を埋め、平滑な表面を形成できるが、この場合も溝近傍の低密度領域は依然として残るため、幅方向における密度のバラツキは小さくなるものの消えることがない。
【0007】
本発明は、スクリ−ン式シュ−トによって生じる溝を埋め平滑な表面を形成するとともに、溝近傍に生じる低密度領域をなくすことにより幅方向の装入密度も均一にする焼結機幅方向の原料層の通気性を均一にする装置および焼結鉱の製造方法を提供することを目的とする。
【0008】
【課題を解決するための手段】
本発明は上記の目的を、次の装置によって達成する。
【0009】
第1の装置は、焼結機のスクリ−ン式シュ−トと点火炉との間でかつ焼結原料層上に設けられ、パレットの幅方向に延設された回転軸を有するスクリュ−式原料掻き寄せ羽根を備えた焼結機幅方向の原料通気性均一化装置であって、前記スクリュ−式原料掻き寄せ羽根の上下動装置と、前記スクリュ−式原料掻き寄せ羽根の回転数変更装置とを備え、前記スクリュ−式原料掻き寄せ羽根は、前記スクリ−ン式シュ−トを支持しガイドするガイド部材によって焼結原料層上に生じた溝の直上を境にして左右に逆向きに巻かれ溝を埋め、さらに、溝位置に原料を盛り上げた凸部を形成せしめる螺旋羽根が対向して前記回転軸に取付けられていることを特徴とする焼結機幅方向の原料通気性均一化装置である。
【0010】
第2の装置は、第1の装置にスクリュ−式原料掻き寄せ羽根の上下動装置と、前記掻き寄せ羽根の回転数変更装置とを備えた焼結機幅方向の原料通気性均一化装置である。
【0011】
第3の装置は、第1の装置または、第2の装置にスクリュ−式原料掻き寄せ羽根の下流にカットオフプレ−トを設けた焼結機幅方向の原料通気性均一化装置である。
【0012】
「作用」
第1の発明:原料をスクリ−ン式シュ−トを通してパレット上に装入する過程でガイド部材直下のパレット幅方向の定位置に形成される溝に対して、スクリュ−式原料掻き寄せ羽根は、軸を回転することにより原料を溝位置へ運搬するよう螺旋の巻き方にしており、溝の大きさおよびパレット速度に応じて、掻き寄せ羽根の原料層への食い込み深さとその回転数を決め、本装置を運転すれば、原料表層に押圧を懸けることなく溝を埋めることができる。
【0013】
第2の発明:溝部に凸部が形成される。単に平らに均したのでは溝部の通気性が他の部分より若干高くなるが、上記凸部により幅方向の通気性の不均一はより改善される。
【0014】
第3の発明:この凸部を下流のカットオフプレ−トで、他の原料層表面を僅かに押圧を懸ける程度に均せば、原料表面の平滑化と同時に溝および近傍の低密度領域もなくすことができ、幅方向の通気性の不均一はさらに改善できる。
【0015】
従って、前記V字形状の掻き寄せ体および前記一対のスクリュ−羽根を掻き寄せ体として利用する方法の問題を解消することができる。
【0016】
【発明の実施の形態】
本発明の実施の形態を図面に基づいて以下に説明する。
【0017】
図1は、本発明装置の正面図(図3のB−B矢視図)図2は、図1のE−E矢視図,図3は本発明装置に係るスクリュ−式原料掻き寄せ羽根の下流にカットオフプレ−トを設けたものの斜視図である。
【0018】
図3において、原料2はスクリ−ン式シュ−ト4により、パレット1に装入される。スクリ−ン式シュ−ト4は多数の線状部材4aとこれらを支持しガイドするガイド部材4bより構成されている。5はガイド部材4bによって生じた溝である。スクリュ−式原料掻き寄せ羽根6aはスクリ−ン式シュ−ト4と点火炉3の間に設置され、回転軸を回転させることにより原料層の表層の原料を掻き寄せ溝を埋め、他の部分より凸にする。この原料表層の凸部7はスクリュ−式原料掻き寄せ羽根6の下流に設けたカットオフプレ−ト8の前面に原料堆積部9を形成させる。カットオフプレ−ト8で溝5の存在していた部位に押圧を懸け、原料層の表面を平滑にする。これによりパレット幅方向に均一な密度を有する原料層が得られる。
【0019】
図1に示すように本発明装置は、回転軸6bに羽根板を一定のピッチで螺旋状に巻いて取りつけたスクリュ−式掻き寄せ羽根6a、回転軸6bを回転させ、かつ回転数を変更することができる回転変更装置15およびこれらを上下動する上下動装置17の主要部から構成されている。スクリュ−式掻き寄せ体6の回転軸6bは支持フレ−ム19の両端部の下面に取付けられた軸受け12に軸支されている。回転軸6bの一方端部は軸受け12から突出している。その突出部に従動スプロケット13が取付けられており、一方支持フレ−ム19の側部に設けられた取付け台20に取付けられた電動機を含む回転数変更装置15の出力軸に駆動スプロケット14が取付けられている。そして、この駆動スプロケット14と従動スプロケット13との間にチェ−ン16が巻き掛けされて、スクリュ−式原料掻き寄せ体6が回転数変更装置15によって回転せられるようになっている。一対の上下動装置17が梁21に取付けられており、上下動装置のスクリュ−ロッド18が支持フレ−ム19を吊持している。また、スクリュ−式原料掻き寄せ体6はパレット1の幅方向に沿って設置されている。原料層2中の11は溝近傍に形成される低密度領域である。
【0020】
溝5(この例では4条ある。)に向かって原料を掻き寄せるために、回転軸6bには溝5の直上を境にして左右に逆向きに巻かれた螺旋羽根が対向して取付けられている(溝上の螺旋羽根の終端6cおよび隣りあう溝と溝の中央で螺旋羽根の終端6dが軸心を中心として180°ずらしている)。即ち、溝が4条のこの例では、左右に逆向きに巻かれた螺旋羽根ブロックが回転軸6bに沿って4ブロック取付けられている。なお、左右の螺旋羽根の終端6cと6cを接続してもよいし、溝幅等に応じて間隔を空けてもよい。左右の螺旋羽根の終端6dと6dについても状況に応じて接続してもよいし、間隔を空けてもよい。
【0021】
図2において、矢印10はパレット1の進行方向を示す。原料表層部に生じた4条の溝5の大きさに応じて上下動装置17を操作して、原料掻き寄せ羽根6aを原料層2への食い込み深さを設定する。回転軸6bを溝の大きさに応じた回転数をもって破線矢印22の向きに回すと、溝以外の表層の原料が矢印23の向きに掻き寄せられて各溝を埋め、さらに、スクリュ−式掻き寄せ体6の通過後に所定量盛り上げた凸部7を形成せしめる。なお、原料掻き寄せ羽根6aの原料層2への食い込み深さhは、原料掻き寄せ羽根6aによる掻き寄せ量(溝5の埋め込み量と盛り上げ量の合計)qおよびスクリュ−の軸方向送り速度とパレットの合成速度vの函数であるから、qおよびvにより食い込み深さhを決めればよい。
【0022】
図4は、スクリュ−式掻き寄せ羽根の上流におけるパレット幅方向の原料層の断面図である。ガイド部材によって生じた溝5の下方近傍に低密度領域11が形成されている。
【0023】
図5は、カットオフプレ−ト8の前面(上流側)に塞き止められてできた原料堆積部位置のパレット幅方向の原料層の断面図である。この原料堆積部9はカットオフプレ−ト8により押圧が懸けられ平面に均されるから、溝近傍の低密度領域11は解消される。
【0024】
図6は、カットオフプレ−トを通過した後の原料層のパレット幅方向断面図である。原料層はパレット幅方向において、平滑な原料表面で、かつ均一な密度となる。
【0025】
【実施例】
図7は、V字形状の掻き寄せ体を有するスクレ−パを用いる方法(特願平8−93944号);従来技術1、パレットの中心部を境に一対のスクリュ−羽根を用いる方法(特開平8−136152号);従来技術2、本願発明の請求項1の方法;本発明1、請求項2の方法;本発明2および請求項3の方法;本発明3について、パレット幅方向の通気性バラツキ度と焼結歩留り(%)を調査した結果を棒グラフに表わした図である。これより以下のことが分かる。
【0026】
(1)従来技術1および2に比較して、パレット幅方向の通気性バラツキ度は本発明1〜3の方がより小さい。本発明においてはそのバラツキ度が、本発明1>本発明2>本発明3の順序で小さくなる。
(2)従来技術1および2に比較して、歩留りは本発明1〜3方がより向上している。本発明においてはその歩留りが、本発明1<本発明2<本発明3の順序で向上する。
【0027】
【発明の効果】
本発明の第1または第2の装置および本発明方法によれば、原料表面全体に亙り押圧を懸けることなく溝周辺の原料を掻き寄せて溝を埋め、さらに溝位置に原料を盛り上げた凸部を形成させることができ、パレット幅方向において略均一な通気性を得ることができる。
【0028】
さらに、第3の装置のようにカットオフプレ−トを追加すれば、カットオフプレ−ト前面に原料堆積層を形成させつつ均すので、溝近傍の低密度領域を解消することができ、パレット幅方向において均一な通気性を確保できる。これより未燃焼部分の発生、歩留りの低下、品質の低下およびコ−クス原単位の上昇を防止することができる。
【図面の簡単な説明】
【図1】本発明装置の正面図である。
【図2】図1のE−E矢視図である。
【図3】本発明装置のカットオフプレ−トを設けたものの矢視図である。
【図4】スクリュ−式掻き寄せ羽根の上流における幅方向の原料層の断面図である。
【図5】カットオフプレ−トの前面(上流側)に塞き止められてできた原料堆積部位置のパレット幅方向の原料層の断面図である。
【図6】カットオフプレ−トを通過した後の原料層の幅方向断面図である。
【図7】従来技術と本発明方法のパレットの幅方向のバラツキ度および焼結歩留りを棒グラフに表わした図である。
【符号の説明】
1 パレット
2 焼結原料
3 点火炉
4 スクリ−ン式シュ−ト
5 溝
6 スクリュ−式原料掻き寄せ体
7 原料表層の凸部
8 カットオフプレ−ト
9 原料堆積部
11 低密度領域
12 軸受け
13 従動スプロケット
14 駆動スプロケット
15 回転数変更装置
16 チェ−ン
17 上下動装置
18 スクリュ−ロッド
19 支持フレ−ム
20 取付け台
21 梁
[0001]
BACKGROUND OF THE INVENTION
The present invention, subscription of the sintering machine - down type shoe - leveling device and sintering of the sintered material surface portion to eliminate the groove filling pallet width direction of breathable variation in the upper portion of the sintering material layer caused by Doo The present invention relates to a method for producing the ore .
[0002]
[Prior art]
For the purpose of improving the air permeability of the entire raw material layer by depositing coarse raw material at the bottom of the pallet and fine raw material at the top when charging the sintering raw material (hereinafter simply referred to as raw material) onto the sintering machine pallet A developed raw material charging apparatus is disclosed in Japanese Patent Laid-Open No. 5-1335. This apparatus is a screen type shunt composed of a linear member such as a wire and a guide member for supporting the linear member. This guide member is provided at several locations in the pallet width direction. However, since the flow of the raw material is obstructed, the amount of raw material deposited immediately below the guide member is smaller than other parts, and a thin groove is formed in the raw material layer. it can. Since this groove is formed by the flow of the surrounding raw material, the raw material density is also reduced. In the raw material layer thus formed, the air permeability of the groove portion is higher than that of other portions in the pallet width direction, and the air permeability in that direction varies. When it becomes larger, an unburned portion of the coke is generated, which causes problems such as a decrease in sintering yield, a decrease in quality, and an increase in the basic unit of coke.
[0003]
In order to solve this problem, the present inventors have proposed a scraper having a plurality of V-shaped scrapers between a screen-type shunt and a cut-off plate. (Japanese Patent Application No. 8-93944).
[0004]
Moreover, in the pallet width direction, as a device that can adjust the raw material thickness without increasing the density of the surface layer portion of the charged raw material, a pair of screw blades whose height and inclination angle can be adjusted above the pallet in the pallet width direction. An apparatus provided on the other hand is disclosed (Japanese Patent Laid-Open No. 8-136152).
[0005]
[Problems to be solved by the invention]
In the scraper having a V-shaped scraping body of Japanese Patent Application No. Hei 8-93944, the scraping body is fixed, so that the bulge of the raw material is always formed on the front surface of the scraping body. . For this reason, a smooth surface can be formed in the width direction of the pallet. However, a pressure is applied from above directly below the raw material bulge portion on the front surface of the scraping body, resulting in density variations in the width direction. As a result, the problems of generation of an unfired portion (short for an unsintered portion), a decrease in yield, a decrease in quality, and an increase in the basic unit of coke remain.
[0006]
Moreover, when the screw blades of JP-A-8-136152 are used as a scraping body, the raw material is scraped from the center of the pallet to both ends, so that the groove is filled without applying pressure to the raw material surface layer to form a smooth surface. However, in this case as well, the low-density region in the vicinity of the groove remains, and thus the density variation in the width direction becomes small but does not disappear.
[0007]
The present invention fills the grooves generated by the screen type shout to form a smooth surface and eliminates the low density region generated in the vicinity of the grooves, thereby making the charging density in the width direction uniform. An object of the present invention is to provide a device for making the air permeability of the raw material layer uniform and a method for producing a sintered ore .
[0008]
[Means for Solving the Problems]
The present invention achieves the above object by the following apparatus or the like .
[0009]
The first apparatus is a screw type having a rotating shaft provided between the screen type shunt of the sintering machine and the ignition furnace and on the sintering raw material layer and extending in the width direction of the pallet. A raw material permeability uniformizing device in the width direction of a sintering machine equipped with a raw material scraping blade, wherein the screw type raw material scraping blade moves up and down, and the screw type raw material scraping blade rotation speed changing device. The screw-type raw material scraping blade is opposite to the left and right with the guide member that supports and guides the screen-type shunt directly above the groove formed on the sintered raw material layer. Uniform air permeability in the width direction of the sintering machine, characterized in that spiral blades that fill the wound groove and further form a raised portion with raised raw material at the groove position are attached to the rotating shaft facing each other. Device.
[0010]
The second device is a material permeability uniformizing device in the width direction of the sintering machine, which includes a vertical movement device for a screw-type raw material scraping blade and a rotation speed changing device for the scraping blade in the first device. is there.
[0011]
The third device is a material permeability uniformizing device in the width direction of the sintering machine in which the first device or the second device is provided with a cut-off plate downstream of the screw-type material scraping blade.
[0012]
"Action"
First invention: A screw-type raw material scraping blade is formed in a groove formed at a fixed position in the pallet width direction immediately below the guide member in the process of charging the raw material onto the pallet through the screen type shunt. The spiral is wound so that the raw material is conveyed to the groove position by rotating the shaft, and the biting depth of the scraping blade into the raw material layer and the number of rotations are determined according to the size of the groove and the pallet speed. If this apparatus is operated, the groove can be filled without applying pressure to the raw material surface layer.
[0013]
2nd invention: A convex part is formed in a groove part. Simply flattening makes the air permeability of the groove part slightly higher than other parts, but the unevenness of the air permeability in the width direction is further improved by the convex part.
[0014]
Third invention: If this convex part is leveled to the extent that the other raw material layer surface can be slightly pressed by a downstream cut-off plate, the groove and the low-density region in the vicinity thereof are simultaneously smoothed. It is possible to eliminate the non-uniformity of the air permeability in the width direction.
[0015]
Therefore, the problem of the method of using the V-shaped scraping body and the pair of screw blades as the scraping body can be solved.
[0016]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0017]
FIG. 1 is a front view of the apparatus of the present invention (viewed along arrow BB in FIG. 3). FIG. 2 is a view taken along arrow EE of FIG. It is a perspective view of what provided the cut-off plate in the downstream.
[0018]
In FIG. 3, the raw material 2 is charged into the pallet 1 by a screen type shunt 4. The screen type shunt 4 is composed of a large number of linear members 4a and guide members 4b for supporting and guiding them. Reference numeral 5 denotes a groove formed by the guide member 4b. The screw type raw material scraping blade 6a is installed between the screen type shunt 4 and the ignition furnace 3, and the rotary shaft is rotated to scrape the raw material on the surface layer of the raw material layer to fill the groove. Make it more convex. The raw material surface projection 7 forms a raw material deposit 9 on the front surface of a cut-off plate 8 provided downstream of the screw-type raw material scraping blade 6. The surface of the raw material layer is smoothed by applying pressure to the portion where the groove 5 was present with the cut-off plate 8. Thereby, a raw material layer having a uniform density in the pallet width direction is obtained.
[0019]
As shown in FIG. 1, the device of the present invention rotates a screw-type scraping blade 6a, which is attached by rotating a blade plate around a rotating shaft 6b in a spiral shape, and rotates the rotating shaft 6b, and changes the rotational speed. It is comprised from the principal part of the rotation change apparatus 15 which can be moved, and the vertical movement apparatus 17 which moves these up and down. The rotating shaft 6 b of the screw type scraper 6 is supported by bearings 12 attached to the lower surfaces of both end portions of the support frame 19. One end of the rotating shaft 6 b protrudes from the bearing 12. A driven sprocket 13 is mounted on the output shaft of a rotation speed changing device 15 including an electric motor mounted on a mounting base 20 provided on the side of the support frame 19. It has been. A chain 16 is wound between the drive sprocket 14 and the driven sprocket 13 so that the screw-type raw material scraping body 6 is rotated by the rotation speed changing device 15. A pair of vertical movement devices 17 are attached to the beam 21, and a screw rod 18 of the vertical movement device holds a support frame 19. The screw-type raw material scraping body 6 is installed along the width direction of the pallet 1. 11 in the raw material layer 2 is a low density region formed in the vicinity of the groove.
[0020]
In order to scrape the raw material toward the groove 5 (in this example, there are four strips), the rotating shaft 6b is attached with spiral blades wound in opposite directions on the right and left sides of the rotating shaft 6b. (The end 6c of the spiral blade on the groove and the end 6d of the spiral blade at the center of the adjacent groove and the groove are shifted by 180 ° about the axis). That is, in this example having four grooves, four blocks of spiral blades wound in opposite directions on the left and right are attached along the rotation shaft 6b. In addition, the terminal ends 6c and 6c of the left and right spiral blades may be connected, or an interval may be provided according to the groove width or the like. The ends 6d and 6d of the left and right spiral blades may also be connected depending on the situation or may be spaced apart.
[0021]
In FIG. 2, an arrow 10 indicates the traveling direction of the pallet 1. The vertical movement device 17 is operated according to the size of the four grooves 5 generated in the raw material surface layer portion, and the biting depth of the raw material scraping blade 6a into the raw material layer 2 is set. When the rotation shaft 6b is rotated in the direction of the broken line arrow 22 with the number of rotations corresponding to the size of the groove, the raw material of the surface layer other than the groove is scraped in the direction of the arrow 23 to fill each groove, and further, the screw type scraping A convex portion 7 that is raised by a predetermined amount after passing through the gathering body 6 is formed. The biting depth h of the raw material scraping blade 6a into the raw material layer 2 is determined by the amount of scraping by the raw material scraping blade 6a (the sum of the embedding amount and the rising amount of the groove 5) q and the axial feed speed of the screw. Since it is a function of the composite speed v of the pallet, the biting depth h can be determined by q and v.
[0022]
FIG. 4 is a cross-sectional view of the raw material layer in the pallet width direction upstream of the screw-type scraping blade. A low density region 11 is formed near the lower portion of the groove 5 generated by the guide member.
[0023]
FIG. 5 is a cross-sectional view of the raw material layer in the pallet width direction at the position of the raw material deposition portion that is blocked by the front surface (upstream side) of the cut-off plate 8. Since this raw material deposition portion 9 is pressed by the cut-off plate 8 and leveled to a flat surface, the low density region 11 in the vicinity of the groove is eliminated.
[0024]
FIG. 6 is a cross-sectional view in the pallet width direction of the raw material layer after passing through the cut-off plate. The raw material layer has a smooth raw material surface and a uniform density in the pallet width direction.
[0025]
【Example】
FIG. 7 shows a method using a scraper having a V-shaped scraper (Japanese Patent Application No. 8-93944); Prior Art 1, a method using a pair of screw blades at the center of the pallet (special Kaihei 8-136152); Prior art 2, the method of claim 1 of the present invention; the methods of inventions 1 and 2; the methods of invention 2 and claim 3; It is the figure which represented the result of having investigated property variation degree and sintering yield (%) in the bar graph. This shows the following.
[0026]
(1) Compared with the prior arts 1 and 2, the present invention 1-3 is smaller in the air permeability variation degree of the pallet width direction. In the present invention, the degree of variation decreases in the order of the present invention 1> the present invention 2> the present invention 3.
(2) Compared with the prior arts 1 and 2, the yields of the present inventions 1 to 3 are further improved. In the present invention, the yield is improved in the order of the present invention 1 <the present invention 2 <the present invention 3.
[0027]
【The invention's effect】
According to the first or second device of the present invention and the method of the present invention , the convex portion that squeezes the raw material around the groove to fill the groove without applying pressure over the entire raw material surface, and further swells the raw material at the groove position Thus, substantially uniform air permeability can be obtained in the pallet width direction.
[0028]
Furthermore, if a cut-off plate is added as in the third device, the material deposition layer is formed on the front surface of the cut-off plate, so that the low-density region near the groove can be eliminated. Uniform air permeability can be secured in the pallet width direction. As a result, it is possible to prevent the occurrence of an unburned portion, a decrease in yield, a decrease in quality, and an increase in the basic unit of coke.
[Brief description of the drawings]
FIG. 1 is a front view of a device of the present invention.
FIG. 2 is a view taken in the direction of arrows EE in FIG.
FIG. 3 is an arrow view of the apparatus of the present invention provided with a cut-off plate.
FIG. 4 is a cross-sectional view of a raw material layer in the width direction upstream of a screw-type scraping blade.
FIG. 5 is a cross-sectional view of the raw material layer in the pallet width direction at the position of the raw material deposition portion that is blocked by the front surface (upstream side) of the cut-off plate.
FIG. 6 is a cross-sectional view in the width direction of the raw material layer after passing through the cut-off plate.
FIG. 7 is a bar graph showing the variation in the width direction of a pallet and the sintering yield of the prior art and the method of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Pallet 2 Sintering raw material 3 Ignition furnace 4 Screen type | mold shout 5 Groove 6 Screw type raw material scraper 7 Raw material surface convex part 8 Cut-off plate 9 Raw material deposition part 11 Low density area | region 12 Bearing 13 Drive sprocket 14 Drive sprocket 15 Speed change device 16 Chain 17 Vertical motion device 18 Screw rod 19 Support frame 20 Mounting base 21 Beam

Claims (3)

焼結機のスクリ−ン式シュ−トと点火炉との間でかつ焼結原料層上に設けられ、パレットの幅方向に延設された回転軸を有するスクリュ−式原料掻き寄せ羽根を備えた焼結機幅方向の原料通気性均一化装置であって、前記スクリュ−式原料掻き寄せ羽根の上下動装置と、前記スクリュ−式原料掻き寄せ羽根の回転数変更装置とを備え、前記スクリュ−式原料掻き寄せ羽根は、前記スクリ−ン式シュ−トを支持しガイドするガイド部材によって焼結原料層上に生じた溝の直上を境にして左右に逆向きに巻かれ溝を埋め、さらに、溝位置に原料を盛り上げた凸部を形成せしめる螺旋羽根が対向して前記回転軸に取付けられていることを特徴とする焼結機幅方向の原料通気性均一化装置。A screw-type raw material scraping blade having a rotating shaft provided between the screen type shunt of the sintering machine and the ignition furnace and on the sintered raw material layer and extending in the width direction of the pallet is provided. A raw material permeability uniformizing device in the width direction of the sintering machine, comprising: a vertical movement device for the screw-type raw material scraping blade; and a rotation speed changing device for the screw-type raw material scraping blade. -The raw material scraping blade is wound in the opposite direction right and left with the guide member that supports and guides the screen type shunt on the sintered raw material layer as a boundary to fill the groove, Further, the raw material permeability uniformizing device in the width direction of the sintering machine, characterized in that spiral blades for forming a raised portion of the raw material at the groove position are attached to the rotary shaft so as to face each other. 前記スクリュ−式原料掻き寄せ羽根の下流にカットオフプレ−トを備えたことを特徴とする請求項1に記載の焼結機幅方向の原料通気性均一化装置。The raw material air permeability uniformizing device in the width direction of the sintering machine according to claim 1, further comprising a cut-off plate downstream of the screw-type raw material scraping blade. 線状部材と該線状部材を支持するガイド部材とから構成されたスクリーン式シュートを用いて焼結原料をパレットに供給し、スクリュ−式原料掻き寄せ羽根を有する焼結機を用いた焼結鉱の製造方法において、前記スクリュ−式原料掻き寄せ羽根を用いて焼結原料を掻き寄せることによって前記ガイド部材直下に形成され溝を埋め、さらに、溝位置に原料を盛り上げた凸部を形成せしめ焼結することを特徴とする焼結鉱の製造方法。By using a screen-type chute made up of a guide member for supporting the linear member and the linear member to supply sintering material to the pallet, screw - with sintering machine to have a formula feed scraper blade baked in the manufacturing method of ore, the screw - a buried groove formed directly below the guide member by scrape a sintering material using equation material scraper blade, further convex portion raised raw material into the groove position method for producing sintered ore according to claim formation allowed sintering to Rukoto.
JP912898A 1998-01-20 1998-01-20 Raw material breathability homogenizer in the width direction of a sintering machine and method for producing a sintered ore Expired - Fee Related JP3889142B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP912898A JP3889142B2 (en) 1998-01-20 1998-01-20 Raw material breathability homogenizer in the width direction of a sintering machine and method for producing a sintered ore

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP912898A JP3889142B2 (en) 1998-01-20 1998-01-20 Raw material breathability homogenizer in the width direction of a sintering machine and method for producing a sintered ore

Publications (2)

Publication Number Publication Date
JPH11211355A JPH11211355A (en) 1999-08-06
JP3889142B2 true JP3889142B2 (en) 2007-03-07

Family

ID=11712003

Family Applications (1)

Application Number Title Priority Date Filing Date
JP912898A Expired - Fee Related JP3889142B2 (en) 1998-01-20 1998-01-20 Raw material breathability homogenizer in the width direction of a sintering machine and method for producing a sintered ore

Country Status (1)

Country Link
JP (1) JP3889142B2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100979008B1 (en) * 2003-04-08 2010-08-30 주식회사 포스코 A wave apparatus for a surface of raw materials charged in a sintering trailer
DE102005027275B3 (en) * 2005-06-08 2006-10-05 Salzgitter Mannesmann Gmbh Method for loading of sintering material onto sintering band entails equalizing of layer height by horizontal transverse transporting onto sintering band which avoids compacting of sintering material
JP2010043328A (en) 2008-08-13 2010-02-25 Jp Steel Plantech Co Method for charging raw material to be sintered and apparatus therefor
DE102008051063B4 (en) * 2008-10-09 2014-08-21 Outotec Oyj Device for smoothing the surface of a sintered mixture

Also Published As

Publication number Publication date
JPH11211355A (en) 1999-08-06

Similar Documents

Publication Publication Date Title
US6136257A (en) Apparatus and method for producing a three-dimensional object and for applying a layer of a powder material to a surface
JP6518344B2 (en) Powder recoater for 3D printer
JP6577062B2 (en) 3D printer having coating apparatus and coating apparatus cleaning apparatus
JP2018521875A5 (en)
JP3889142B2 (en) Raw material breathability homogenizer in the width direction of a sintering machine and method for producing a sintered ore
CA2107255C (en) Pipe wrapping apparatus and method
CN102188044A (en) Method of separating tobacco from cigarette waste, apparatus for separating tobacco from cigarette waste and use of a circular revolving sieve for separating tobacco from cigarette waste
JPH11267891A (en) Powder filling method and powder supply device in powder molding press
CN1039745A (en) Twin-roll type continuous casting machine
CN211840137U (en) Powder paving device and 3D printing equipment
CN110947967A (en) Powder paving device and 3D printing equipment
KR101295564B1 (en) Method and apparatus for charging raw material to be sintered
FR2515566A1 (en) DEVICE FOR FILLING CONTINUOUSLY SHIFTING MOLDS, AND INSTALLATION COMPRISING SUCH A DEVICE
JP2520203B2 (en) Sinter production method
CN108548419B (en) Material leveling mechanism and material leveling method of sintering machine
KR100939244B1 (en) Apparatus for loading sintering material into sintering car and sintering facilities comprising the same
JP2014046506A (en) Material supply box for concrete block molding equipment
JP2010090552A (en) Screed device of road paving vehicle
CN219766795U (en) Powder discharging device of 3DP equipment
JP2003025098A (en) Feeder of powder molding machine
JP3257299B2 (en) Raw material charging device for sintering machine
JPH07268495A (en) Production of sintering ore and raw material charging device of dwight-lloyd type sintering machine
CN213612483U (en) Mechanism sand sieving mechanism
CN111107977A (en) Assembly and method for creating 3D structures
JPH09280741A (en) Raw material charging apparatus for sintering machine

Legal Events

Date Code Title Description
A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20040224

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040426

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20040608

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040809

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20040830

A911 Transfer of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A911

Effective date: 20040914

A912 Removal of reconsideration by examiner before appeal (zenchi)

Free format text: JAPANESE INTERMEDIATE CODE: A912

Effective date: 20050128

RD02 Notification of acceptance of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7422

Effective date: 20060509

RD01 Notification of change of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7421

Effective date: 20060920

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20061019

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20061129

R150 Certificate of patent or registration of utility model

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091208

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101208

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101208

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111208

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121208

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121208

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131208

Year of fee payment: 7

LAPS Cancellation because of no payment of annual fees