TW567300B - Material feeding apparatus for rotary hearth furnace - Google Patents

Material feeding apparatus for rotary hearth furnace Download PDF

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Publication number
TW567300B
TW567300B TW91121979A TW91121979A TW567300B TW 567300 B TW567300 B TW 567300B TW 91121979 A TW91121979 A TW 91121979A TW 91121979 A TW91121979 A TW 91121979A TW 567300 B TW567300 B TW 567300B
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TW
Taiwan
Prior art keywords
raw material
loading device
furnace
rotary hearth
bottom plate
Prior art date
Application number
TW91121979A
Other languages
Chinese (zh)
Inventor
Hiroshi Ichikawa
Original Assignee
Nippon Steel Corp
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Publication of TW567300B publication Critical patent/TW567300B/en

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/14Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/16Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27BFURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B9/00Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
    • F27B9/30Details, accessories, or equipment peculiar to furnaces of these types
    • F27B9/38Arrangements of devices for charging
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D2003/0001Positioning the charge
    • F27D2003/0006Particulate materials
    • F27D2003/0008Longitudinal distribution
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27FURNACES; KILNS; OVENS; RETORTS
    • F27DDETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00Charging; Discharging; Manipulation of charge
    • F27D3/0033Charging; Discharging; Manipulation of charge charging of particulate material

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacture Of Iron (AREA)
  • Tunnel Furnaces (AREA)
  • Furnace Charging Or Discharging (AREA)

Abstract

The present invention provides a material feeding apparatus for a rotary hearth furnace for easily making one layer on a furnace hearth, uniformly feeding a material in the furnace width direction, making a small temperature difference in the fed material location, providing a uniformly constant reduction rate, and improving productivity. This material feeding apparatus comprises one side of a bottom plate of apparatus fixed to a frame, and the other side of the bottom plate forming an opening portion having a configuration in which a plurality of straight lines are connected in order to a curved line which comprises an imaging line dividing the surface of the furnace hearth in the width direction and a plurality of curved lines connected in order to a straight line parallel to a material transfer direction under specific conditions. This apparatus preferably provides levelling equipment for making the thickness of the fed material between the frame and the bottom plate even. This apparatus is included at an angle greater or less than the rest angle of material feeding. A material transfer device is preferably provided in this apparatus.

Description

567300 五、發明説明(i ) [技術領域] 本發明係有關於一種旋轉爐床爐之原料裝入妒置,其係 於用以加熱還原包含有在製鐵所等產生之積垢、於:尸、太、 塵等之氧化鐵錠以製造還原鐵錠之旋轉爐床爐内裝入原 料之氧化鐵錠者。 [習知背景] 關於旋轉爐床爐内之原料裝入裝置有許多提案。其一為 使用震動運送機者。㉟震動運送機之前端係跨越旋轉爐床 爐之爐寬而設有開口部,且使搬送於運送機 震動從開口部向爐床面落下後裝入者。雖然可藉震動=寬 度方向落下均一之量,但如旋轉爐床爐,在每單位爐寬之 爐床面積於内周與外周不同之情形下,一旦於寬度方向落 下均一之量,於爐床之外周側之量將比於内周側少。若配 合外周裝入,則於内周側會過量。 於美國專利公開公報第5895215號係揭示有安裝於旋 轉爐床爐上之原料裝人用平台^該平台係如同㈣旋轉爐 床般延伸,且具有設有分配構件之第丨端及設有多數排出 槽之第2端,而原料則自由落下至分配構件上並分配於平 σ王面,且自排出槽成為簾幕狀,並跨越通過平台下方之 旋轉爐床之全寬後裝 入。 於平台之第1端與第2端中間,具有將原料調整為一樣 厚度(一層為基本)之整平器。又,於以長度方向間隔板(隔 板)所間隔出之數條溝中各設一個排出槽,且於爐床之内徑 側與外徑側藉著改變槽之傾斜角以調整爐床寬度方向之原567300 V. Description of the Invention (i) [Technical Field] The present invention relates to a raw material for a rotary hearth furnace, which is used for heating and reducing the scale that is contained in iron making, etc. Iron oxide ingots from corpses, dust, dust, etc. are used to make reduced iron ingots. Rotary hearth furnaces are filled with raw iron oxide ingots. [Conventional background] There are many proposals for a raw material charging device in a rotary hearth furnace. One is the use of vibration conveyors.之前 The front end of the vibration conveyor is provided with an opening across the width of the hearth of the rotary hearth furnace, and the conveyer is placed on the conveyor after the vibration falls from the opening to the hearth surface. Although it is possible to drop the uniform amount by vibration = width direction, but if the hearth area per unit of furnace width is different from the inner and outer perimeters of the rotary hearth furnace, once the uniform amount is dropped in the width direction, The amount on the outer peripheral side will be smaller than on the inner peripheral side. If it is fitted into the outer periphery, it will be excessive on the inner periphery. U.S. Patent Publication No. 5895215 discloses a raw material loading platform mounted on a rotary hearth furnace. The platform extends like a rotary hearth and has a first end with a distribution member and a majority. The second end of the discharge trough, and the raw material is freely dropped onto the distribution member and distributed on the flat sigma king surface. The discharge trough becomes curtain-shaped and is loaded across the full width of the rotary hearth under the platform. Between the first end and the second end of the platform, there is a leveler that adjusts the raw materials to the same thickness (one layer is basic). In addition, one discharge groove is provided in each of the grooves separated by the lengthwise partition plate (partition), and the width of the hearth is adjusted by changing the inclination angle of the groove on the inner diameter side and the outer diameter side of the hearth. Orientation

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567300 五、發明説明(2 ) 料裝入量’而使原料均勻地分配於爐床全面。 於曰本特許公開公報第1 1 — 293317號係揭示有使藉上 述隔板而間隔之通路的前方寬度,自用以引導原料投入旋 轉爐床之外周部之通路的前方寬度至用以引導原料投入旋 轉爐床之内周部之通路的前方寬度逐漸變窄之裝入裝置。 又’於日本特許公開公報第2000 — 3 10488號則揭示有 藉著使上述整平器之下邊傾斜而調整其與平台面之間隙, 將原料之供給量設定成依寬度方向而異之裝入裝置。 上述美國專利公開公報第5895215號之技術係因設有 多數排出槽,故用以間隔各個排出槽之隔板是必要的,且 一旦處理規模變小,則隔板之間隔將隨之變窄,若接近裝 入原料(成形體)之大小,則有容易產生堵塞或卡住之問題。 於上述日本特許公開公報第u — 293317號之技術中, 由於用以引導原料朝外周部投入之通路的前方寬度隨著前 進而逐漸變窄,故易產生堵塞或卡住之問題。又,於上述 日本特許公開公報第2000 — 310488號之技術中,由於是以 平台上之原料(成形體)的層數來調整供給量,故即使爐床 上亦難以形成一層。因此,朝原料層下部之傳熱緩慢,於 層下部之還原速度下降,而生產性亦降低。 如此一來,在設置隔板方面,原料會堵塞在隔板間内, 而無法順利地將原料裝入旋轉爐床爐面。又,在使整平器 之下邊於寬度方向傾斜以調整朝旋轉爐床爐之寬度方向裝 入量方面,則因裝入旋轉爐床爐内之原料層變化而無法均 勻裝入。 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁)567300 V. Description of the invention (2) Loading amount of raw materials', so that the raw materials are evenly distributed on the whole surface of the hearth. The Japanese Patent Laid-Open Publication No. 11-293317 discloses the width of the front of the passage spaced by the above-mentioned partition, from the width of the front of the passage to guide the input of raw materials into the outer periphery of the rotary hearth to the introduction of raw materials. A loading device in which the width of the front of the passage of the inner peripheral portion of the rotary hearth is gradually narrowed. Also, in Japanese Patent Laid-Open Publication No. 2000-3 10488, it is disclosed that the gap between the flattener and the platform surface is adjusted by tilting the lower side of the flattener, and the supply amount of raw materials is set to vary depending on the width direction. Device. The technology of the above-mentioned U.S. Patent Publication No. 5895215 is provided with a plurality of discharge grooves, so a partition plate for separating each discharge groove is necessary, and once the processing scale becomes smaller, the interval between the partition plates will be narrowed accordingly. When it is close to the size of the raw material (molded article), there is a problem that clogging or jamming is likely to occur. In the above-mentioned Japanese Patent Laid-Open Publication No. u-293317, since the front width of the path for guiding the raw material to be introduced toward the outer peripheral portion becomes narrower as it goes forward, problems such as clogging or jamming tend to occur. Furthermore, in the above-mentioned Japanese Patent Laid-Open Publication No. 2000-310488, since the supply amount is adjusted by the number of layers of raw materials (molded bodies) on the platform, it is difficult to form a layer even on the hearth. Therefore, the heat transfer to the lower part of the raw material layer is slow, the reduction speed at the lower part of the layer is reduced, and the productivity is also reduced. In this way, in the installation of the partition plate, the raw materials are blocked in the partition room, and the raw materials cannot be smoothly charged into the rotary hearth surface. In addition, in order to adjust the loading amount in the width direction of the rotary hearth furnace by tilting the lower side of the leveler in the width direction, it is impossible to uniformly load the raw material layer in the rotary hearth furnace due to changes. This paper size applies to China National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before filling this page)

567300 A7 _____________B7^_ 五、發明説明(4 ) " 一~" :~ 裝入襞置之平面圖。 第2圖係顯示本發明之裝入裝置之例之透視圖。 (請先閲讀背面之注意事項再填寫本頁) 第3圖係顯示本發明之裝入裝置之例,係第2圖a — A箭頭所見之截面圖。 [發明之實施形態] 藉第1圖至第3圖之例說明本發明裝置。第丨圖係於 旋轉爐床爐之爐床上設有裝入裝置丨之狀態的平面圖。第 2圖係裝入裝置1之透視圖。第3圖係裝入裝置〗之截面 圖。 裝入裝置1之底板2之一端係固定於該裝置1之框體 12,而另一端則如第丨圖所示以連接多數(本例為四條)連 續直線3、4、5、6之形狀形成一開口端部。該多數連續直 線3、4、5、6係如第1圖所示依序連接以於寬度方向分割 爐床面之點線表示之假想線與平行於前述裝入裝置丨之原 料移動方向之直線的交點,且滿足上述(1)式之條件。 第一圖中,7為爐外壁,8為爐内壁,兩者之間則為爐 床。於本例中,將爐床面於寬度方向分割為四,表面積自 外周側起為A、B、C、D。又,令使用以形成前述底板2 之開口端部之連續直線3至6朝與原料移動方向垂直之方 向投影時之長度(投影長度)自外周側起為a、b、c、d。多 數連續直線亦可為連續曲線。 由於係如上述般形成前述底板2之開口端部,非以隔 板等分隔該底板2,故可由爐床之内周側至外周側均勻地 供給原料。 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) 567300567300 A7 _____________ B7 ^ _ V. Description of the invention (4) " 一 ~ " : ~ The plan view of the installation. Fig. 2 is a perspective view showing an example of the loading device of the present invention. (Please read the precautions on the back before filling out this page.) Figure 3 shows an example of the loading device of the present invention, and it is a cross-sectional view seen from the arrow a-A in Figure 2. [Embodiment of the Invention] The device of the present invention will be described with reference to the examples of FIGS. 1 to 3. Figure 丨 is a plan view of a state where a loading device is installed on the hearth of the rotary hearth furnace. FIG. 2 is a perspective view of the loading device 1. FIG. Figure 3 is a sectional view of the loading device. One end of the bottom plate 2 installed in the device 1 is fixed to the frame 12 of the device 1, and the other end is connected to a plurality of (four in this example) continuous straight 3, 4, 5, and 6 shapes as shown in the figure An open end is formed. The plurality of continuous straight lines 3, 4, 5, and 6 are sequentially connected as shown in FIG. 1 by an imaginary line indicated by a dotted line that divides the hearth surface in the width direction and a straight line parallel to the moving direction of the raw material. And the condition of (1) above. In the first figure, 7 is the outer wall of the furnace, 8 is the inner wall of the furnace, and the hearth is in between. In this example, the hearth surface is divided into four in the width direction, and the surface area is A, B, C, D from the outer peripheral side. The length (projection length) when the continuous straight lines 3 to 6 used to form the open end of the bottom plate 2 are projected in a direction perpendicular to the direction of movement of the raw materials (projection length) are a, b, c, and d from the outer peripheral side. Most continuous straight lines can also be continuous curves. Since the open end portion of the bottom plate 2 is formed as described above, and the bottom plate 2 is not separated by a partition plate or the like, the raw material can be uniformly supplied from the inner peripheral side to the outer peripheral side of the hearth. This paper size applies to China National Standard (CNS) A4 (210X297 mm) 567300

於本發明裝置中,由 时於在月丨J述裝入裝置1之框體12 與以連續直線3至6矣+ — — 1 '、之底板開口端部之間,配設有 以使原料11平均而具有— ^ 樣;度之整平器9,故可更均勺 地將原料供給至爐床。 又,當使前述裝入萝罟 &置1傾斜至大於原料11之安息角 時,則前述底板2上之;5 n μ 、丄ώ θ 之原枓11將非特別地使裝置震動,而 以本身之重篁向開口端部 鳊邛移動且供給至爐床。當傾斜至 於安息角時,則因具有笫?同〜一 圖所不之移動裝置10等原料移 動裝置,故原料11將命門n m Α ^ 、部移動而供給至爐床。 [產業可利用性] 如上所述,本發明裝置,當㈣轉爐床爐裝人氧化鐵疑 等原料時,不會使裝置複雜化,且可使原料供給量自爐床 之内周侧至外周侧維持均句。因此,即使處理規模小亦 無原料之堵塞或卡住之盧而 卜壮 < 厲,而可順利地進行原料裝入,且 於爐床面之寬度方向’處理溫度為均一。&,因具有整平 器,故可將裝入裂置上之原料控制於大略一層之狀態,且 即使爐床上亦容易形成-層原料。因&,原料層之上部與 下部的溫度差小,還原速度大略為ϋ生產性亦提高: 本紙張尺度適用中國國家標準(CNS) Α4規格(210X297公楚) (請先閲讀背面之注意事項再填寫本頁)In the device of the present invention, between the frame 12 of the device 1 and the open end of the bottom plate in a continuous straight line 3 to 6 矣 +-1 ', it is arranged to make raw materials 11 is even and has-^ sample; leveler 9 degree, so the raw materials can be more evenly supplied to the hearth. In addition, when the above-mentioned loading lozenge & set 1 is inclined to a rest angle greater than the raw material 11, the original plate 11 on the bottom plate 2; 5 n μ, 丄 θ will not cause the device to vibrate, and It moves to the open end part 鳊 邛 with its own weight and supplies it to the hearth. When tilted to the angle of repose, because of Same as in the first figure, the raw material moving device such as the moving device 10 is not shown. Therefore, the raw material 11 moves the gate n m Α ^ and supplies it to the hearth. [Industrial Applicability] As mentioned above, when the apparatus of the present invention is loaded with raw materials such as iron oxide, the apparatus of the present invention does not complicate the apparatus, and can supply the amount of raw materials from the inner periphery to the outer periphery of the furnace Maintain a uniform sentence on the side. Therefore, even if the processing scale is small, there is no clogging or jamming of the raw materials, and the raw materials can be loaded smoothly, and the processing temperature is uniform in the width direction of the hearth surface. & Since it has a leveler, it is possible to control the raw material loaded on the cracks to a state of approximately one layer, and it is easy to form a one-layer raw material even on the hearth. Due to & the temperature difference between the upper part and the lower part of the raw material layer is small, and the reduction speed is slightly higher. Productivity is also improved: This paper size applies the Chinese National Standard (CNS) Α4 specification (210X297). (Please read the precautions on the back first (Fill in this page again)

567300 A7 B7 五、發明説明(& ) 〇 [圖中標號說明] 1。..裝入裝置 2…底板 3〜6...連續直線 7.. .爐外壁 8。..爐内壁 9…整平器 10.. .移動裝置 11…原料 12.. .框體 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公釐) (請先閲讀背面之注意事項再填寫本頁)567300 A7 B7 5. & Description of the invention .. Loading device 2 ... bottom plate 3 ~ 6 ... continuous straight line 7..furnace outer wall 8. .. Inner wall of the furnace 9 ... Leveler 10. Mobile device 11 ... Raw material 12 ... Frame The size of this paper applies to China National Standard (CNS) A4 (210X297 mm) (Please read the precautions on the back before (Fill in this page)

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Claims (1)

κ、申請專利範圍 申請專利範圍修正本 第091121979號專利申請案 修正曰期:92年9 η 1·一種旋轉爐床爐之原料裝入裝置,其係用以將原料裝入 於爐床面上並加熱還原者,其特徵在於··前述襄 之底板之一端係固定於該裝入裝置之框體,而' Γ連接多數連續直線或曲線之形狀形成—開口端部,該 等夕數連績直線或曲線係依序連接於寬度方向分割 床面之假想線與平行於前述裝入裝置之原料移動_ 之直線的交點,且滿足以下⑴式之條件, D A/a=A/b=C/c=D/d......⑴ a,b,c,d…於寬度方向分割爐床面時之表面積 於底板另—端之多數之各直線或曲線之原料 移動方向上直角方向之投影長度。 2·如申凊專利範圍帛!項之旋轉爐床爐之原料裝入裝置, 其係於前述裝人裝置之框體與底板開口端部間,配設有 用以使原料平均而具有一樣厚度之整平器者。 3.如申請專利範圍第i丨2項之旋轉爐床爐之原料裝入裝 置,其係使前述裝入裝置傾斜至大於原料之安息角者。 4·如申請專利範圍第丨或2項之旋轉爐床爐之原料裝入裝 置,其係以小於原料之安息角之方式配設前述裝入裝 置,且具有原料移動裝置者。 本紙張尺度適用中國國家標準(CNS) A4規格(210X297公潑) -10 -κ. Application for Patent Scope Application for Patent Scope Amendment No. 091121979 Patent Application Amendment Date: 9/92 η 1 · A raw material loading device for a rotary hearth furnace, which is used to load raw materials on the hearth surface Those who are heated and reduced are characterized in that one end of the aforementioned bottom plate of the Xiang is fixed to the frame of the loading device, and the shape of most continuous straight or curved lines connected to the 'Γ-open end, the number of consecutive days Straight lines or curved lines are sequentially connected to the intersection of the imaginary line of the divided bed surface in the width direction and the line parallel to the movement of the raw material in the loading device, and satisfy the following formula: DA / a = A / b = C / c = D / d ... ⑴ a, b, c, d ... the surface area of the hearth surface when dividing the hearth surface in the width direction Projection length. 2 · If you apply for patent scope! The raw material loading device of the rotary hearth furnace of the item is located between the frame of the aforementioned loading device and the open end of the bottom plate, and is provided with a leveler for equalizing the raw materials and having the same thickness. 3. If the raw material loading device of the rotary hearth furnace of item i 丨 2 of the scope of patent application, the aforementioned loading device is inclined to a angle greater than the rest angle of the raw material. 4. If the raw material loading device of the rotary hearth furnace of the scope of application for item 丨 or 2 is applied, it is equipped with the aforementioned loading device in a manner smaller than the rest angle of the raw material and has a raw material moving device. This paper size is applicable to China National Standard (CNS) A4 (210X297). -10-
TW91121979A 2001-09-28 2002-09-25 Material feeding apparatus for rotary hearth furnace TW567300B (en)

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JP2001299951A JP2003106775A (en) 2001-09-28 2001-09-28 Raw material charging device of rotary hearth furnace

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JP5407436B2 (en) * 2008-03-05 2014-02-05 Jfeスチール株式会社 Raw material charging method and raw material charging apparatus for mobile hearth furnace
KR101072955B1 (en) 2009-08-14 2011-10-12 에스비리모티브 주식회사 Battery module
CN102080929B (en) * 2009-11-27 2012-12-19 中冶长天国际工程有限责任公司 Distributing device for rotary hearth furnace
CN103438703B (en) * 2013-06-25 2017-01-18 吉林省华兴粉末冶金科技有限公司 Raw material iron powder charging device

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US5895215A (en) * 1997-10-14 1999-04-20 Maumee Research & Engineering, Inc. Charging apparatus for a rotary hearth furnance
JP4110664B2 (en) * 1999-04-26 2008-07-02 大同特殊鋼株式会社 Material input device for rotary hearth furnace

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