JP2018146191A - Sinter ore cooling machine and recovery method for granular sinter ore - Google Patents

Sinter ore cooling machine and recovery method for granular sinter ore Download PDF

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JP2018146191A
JP2018146191A JP2017042987A JP2017042987A JP2018146191A JP 2018146191 A JP2018146191 A JP 2018146191A JP 2017042987 A JP2017042987 A JP 2017042987A JP 2017042987 A JP2017042987 A JP 2017042987A JP 2018146191 A JP2018146191 A JP 2018146191A
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ore
trough
chamber
rail
sintered ore
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JP6862936B2 (en
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雄一郎 山本
Yuichiro Yamamoto
雄一郎 山本
陽平 安達
Yohei Adachi
陽平 安達
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Nippon Steel Corp
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Nippon Steel and Sumitomo Metal Corp
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Abstract

PROBLEM TO BE SOLVED: To perform a recovery of a granular sinter ore blown out and dispersed out of a trough bogie without expending much cost and labor.SOLUTION: A sinter ore cooling machine comprising trough bogies moved on rails under their connected state, chambers arranged below the rails and connected by blower pipes to blow-in cooling air to the sinter ores on the bogies, sealing means fixed at upper end parts of the chambers in such a way that they can be replaced to seal the trough bogies and the sliding part of each of the chambers, and transfer means fixed at lower end parts of the chambers to transfer the granular sinter ores dropped from the trough bogies into the chambers and collected there is constituted in such a way that slant plates are arranged between end parts of the rail floor and the transfer means, dispersion restricting plates for restricting dispersion of granular sinter ores blown out of the sliding part while being placed on cooling air leaked from the sliding part are vertically installed near the trough bogie and the rail floor is provided with recovery holes where the granular sinter ores struck to the dispersion restricting plates and accumulated there and the granular sinter ores struck against the rails and collected there are dropped.SELECTED DRAWING: Figure 3

Description

本発明は、焼結鉱を冷却する冷却機と、該冷却機から吹き出る粉粒焼結鉱を回収する方法に関する。   The present invention relates to a cooler that cools a sintered ore and a method for recovering the granular sintered ore that blows out from the cooler.

従来から、高炉操業においては、鉄鉱石粉、石灰石、粉コークス等の焼結原料を焼結機(例えば、DL式焼結機)で焼結した焼結鉱を、主な高炉原料として用いているが、焼結機から排鉱される焼結鉱は500〜600℃の高温状態にあるので、焼結機に隣接した冷却機で、ベルトコンベア等で輸送可能な温度、例えば、約100℃まで冷却する。   Conventionally, in blast furnace operation, sintered ore obtained by sintering sintered raw materials such as iron ore powder, limestone, and powder coke with a sintering machine (for example, DL type sintering machine) is used as the main blast furnace raw material. However, since the sintered ore discharged from the sintering machine is in a high temperature state of 500 to 600 ° C., the cooling machine adjacent to the sintering machine can be transported by a belt conveyor or the like, for example, up to about 100 ° C. Cooling.

冷却方法としては、上部よりブロワ―で冷却風を、焼結鉱を通して吸い込んで冷却する上部吸込み方式と、下部よりブロワ―で冷却風を焼結鉱に吹き込んで冷却する下部吹込み方式があり、冷却機の型式では、大きく分けて、円環型と直線型がある。   As cooling methods, there are an upper suction method in which cooling air is sucked from the upper part by a blower and sucked through the sintered ore, and a lower blowing method in which cooling air is blown into the sintered ore by a blower from the lower part and cooled. The types of the cooler are roughly classified into an annular type and a linear type.

図1に、円環型で、下部吹込み方式の冷却機の一態様を示す。   FIG. 1 shows an embodiment of an annular, lower blowing type cooler.

図1に示す冷却機においては、格子状の底板の上に焼結鉱を載置するトラフ台車1が複数台連結されて、チャンバー3の垂直壁3aに取り付けたレール床14に配置した円環状のレール2上に、車輪1aで移動可能(図中「時計回りの点線」参照)に配置され、円環状のレール2の下部には、トラフ台車1の下から焼結鉱に冷却風を吹き込むチャンバー3が、送風管4で連結されて配置されている。   In the cooler shown in FIG. 1, a plurality of trough carts 1 on which sintered ore is placed on a grid-like bottom plate are connected and arranged on a rail floor 14 attached to a vertical wall 3 a of a chamber 3. It is arranged on the rail 2 so as to be movable by wheels 1a (see “clockwise dotted line” in the figure), and cooling air is blown into the sintered ore from the bottom of the trough carriage 1 to the lower part of the annular rail 2 The chamber 3 is connected and arranged by the blower pipe 4.

トラフ台車1の上部には、焼結鉱を通過した冷却排風を排気(図中「二点鎖線」参照)する排気筒5を備え、トラフ台車1を覆うフードカバー6が配置され、チャンバー3の下部には、チャンバー3内に落下した粉粒焼結鉱を搬送するダストコンベア(図示なし)が、ダストコンベアケーシング7に囲われて配置されている。   The trough carriage 1 is provided with an exhaust cylinder 5 for exhausting the cooling exhaust air that has passed through the sintered ore (see “two-dot chain line” in the figure), and a hood cover 6 that covers the trough carriage 1 is disposed in the chamber 3. A dust conveyor (not shown) that conveys the powdered ore that has fallen into the chamber 3 is disposed in a lower part of the chamber surrounded by a dust conveyor casing 7.

焼結機10から排鉱された焼結鉱は、冷却機の焼結鉱投入口8から、トラフ台車1に順次投入され、トラフ台車1が、排鉱部9まで一周(図中「時計回りの点線」参照)する間に、チャンバー3からトラフ台車1の底板を通して吹き込む冷却風で100℃程度まで冷却され、排鉱部9で、焼結鉱を次工程へ搬送するベルトコンベア(図示なし)上に排鉱される。   The sinter discharged from the sinter 10 is sequentially introduced into the trough cart 1 from the sinter inlet 8 of the cooler, and the trough cart 1 makes one round to the discharge section 9 (“clockwise” in the figure). The belt conveyor is cooled to about 100 ° C. with cooling air blown from the chamber 3 through the bottom plate of the trough carriage 1 and transports the sintered ore to the next process in the discharge section 9 (not shown). Exhausted on top.

図1に示すような、トラフ台車上の焼結鉱に冷却風を下部から吹き込んで冷却する冷却機において、焼結鉱の冷却を効率的に行うためには、移動するトラフ台車と固定配置のチャンバーの摺動部から冷却風が漏洩しないよう、シール手段を用いて、摺動部の気密性を十分に確保する必要がある。   As shown in FIG. 1, in a cooler that cools a sintered ore on a trough cart by blowing cooling air from below, in order to cool the sintered ore efficiently, a moving trough cart and a fixed arrangement are arranged. In order to prevent cooling air from leaking from the sliding portion of the chamber, it is necessary to sufficiently secure the airtightness of the sliding portion using a sealing means.

図2に、図1に示す冷却機のA−B断面構造を示す。トラフ台車1は、支持部材11に取り付けた車輪1aが、チャンバー3の垂直壁3aに取り付けたレール床14に配置したレール2上を転動して、排鉱部(図1中「9」参照)に向かって移動する。   FIG. 2 shows an A-B cross-sectional structure of the cooler shown in FIG. In the trough carriage 1, the wheel 1 a attached to the support member 11 rolls on the rail 2 arranged on the rail floor 14 attached to the vertical wall 3 a of the chamber 3, and the ore excavation part (see “9” in FIG. 1). )

トラフ台車1の移動の間、送風管4からチャンバー内に吹き込む冷却風が、トラフ台車1の格子状の底板に載置されている焼結鉱1aを通過して(図中「上方に向かう2点鎖線」参照)、焼結鉱10aが冷却される。   During the movement of the trough carriage 1, the cooling air blown into the chamber from the blower pipe 4 passes through the sintered ore 1 a placed on the lattice-like bottom plate of the trough carriage 1 (“upward 2” in the figure). The sinter 10a is cooled.

この冷却の際、移動する支持部材11と固定配置のチャンバー3の摺動部Aは取替可能なシール材12で封止されているが、冷却風の一部は、摺動部Aから漏洩し(図中「両側の摺動部Aに向かう2点鎖線」参照)、また、シール材12が摩耗すると、外部に漏洩する冷却風の風量は増大する。   During this cooling, the moving support member 11 and the sliding portion A of the fixedly arranged chamber 3 are sealed with a replaceable sealing material 12, but a part of the cooling air leaks from the sliding portion A. However, when the seal member 12 is worn, the amount of cooling air leaking to the outside increases.

トラフ台車1の移動中、トラフ台車1の格子状の底部から粉粒焼結鉱(以下「落鉱」ということがある。)10bが落下するが、比較的重量のある落鉱10dは、チャンバー3内を降下し、チャンバー3の傾斜壁3bに沿って落鉱落下管13に達し、ダストコンベアケーシング7内のダストコンベア(図示なし)で回収される。   While the trough bogie 1 is moving, a granular sintered ore (hereinafter sometimes referred to as “falling”) 10b falls from the bottom of the trough bogie 1 in a lattice shape. 3, descends along the inclined wall 3 b of the chamber 3, reaches the falling dropping tube 13, and is collected by a dust conveyor (not shown) in the dust conveyor casing 7.

一方、軽量の落鉱10cは、支持部材11と固定配置のチャンバー3の摺動部Aから漏洩する冷却風に乗って、該摺動部Aの外側に吹き出し、チャンバー3の垂直壁3aとレール2の間に堆積し、また、車輪1aの間からレール2の外側に吹き出して飛散する。そして、堆積した落鉱の回収、及び、飛散した落鉱の回収には、多大な費用と労力が必要である。   On the other hand, the lightweight falling ore 10c rides on the cooling air leaking from the support member 11 and the sliding portion A of the chamber 3 fixedly arranged, and blows out to the outside of the sliding portion A, and the vertical wall 3a of the chamber 3 and the rail 2 accumulates between the wheels 1a and blows to the outside of the rail 2 and scatters. And collection | recovery of the fallen ore and the collection | recovery of the fallen fallen ore require great expense and labor.

そして、このことは、冷却機の断面構造が、図2に示すA−B断面構造と同様の、直線型で、下部吹込み方式の冷却機においても同じである。   This also applies to the cooler of the lower blow type, in which the cross-sectional structure of the cooler is the same as that of the cross-sectional structure AB shown in FIG.

それ故、トラフ台車とチャンバーの摺動部において気密性を確保することは重要であり、これまで、上記摺動部の気密性を確保する技術が、数多く提案されている(例えば、特許文献1〜6、参照)。   Therefore, it is important to ensure airtightness in the sliding portion between the trough carriage and the chamber, and many techniques for ensuring the airtightness of the sliding portion have been proposed so far (for example, Patent Document 1). ~ 6).

例えば、特許文献6には、移動する冷却トラフ内の焼結鉱を、冷却トラフ下部に設置したエアチャンバより冷却トラフ内に冷却ガスを吹き込むことで冷却する焼結鉱冷却機のシール装置であって、冷却トラフの下端縁に設置されたシールプレート下面と、エアチャンバの上端縁との間隙に、該間隙より丈高で冷却トラフの移動方向に長い可撓性弾性板状体を介装し、可撓性弾性板状体の下端をエアチャンバ側に固着し、かつ、可撓性弾性板状体の横断面を湾曲させて、可撓性弾性板状体の板面をシールプレート下面に当接させる際に、可撓性弾性板状体として磁石粉を含有する板状ゴム材料を用いることを特徴とする焼結鉱冷却機のシール装置が提案されている。   For example, Patent Document 6 discloses a sealing device for a sintered ore cooler that cools a sintered ore in a moving cooling trough by blowing a cooling gas into the cooling trough from an air chamber installed below the cooling trough. In addition, a flexible elastic plate-like body that is taller than the gap and long in the moving direction of the cooling trough is interposed in the gap between the lower surface of the seal plate installed at the lower edge of the cooling trough and the upper edge of the air chamber. The lower end of the flexible elastic plate is fixed to the air chamber side, and the cross section of the flexible elastic plate is curved so that the plate surface of the flexible elastic plate is on the lower surface of the seal plate. A sealing apparatus for a sinter ore cooler has been proposed in which a plate-like rubber material containing magnet powder is used as the flexible elastic plate-like body when contacting.

しかし、トラフ台車とチャンバーの摺動部をシール材で封止しても、シール材は徐々に摩耗していくので、上記摺動部からの冷却風の漏洩を阻止することはできず、漏洩する冷却風に乗る落鉱の吹出しを長期間にわたり抑止することは困難である。   However, even if the sliding part of the trough carriage and the chamber is sealed with a sealing material, the sealing material gradually wears out, so it is not possible to prevent leakage of cooling air from the sliding part. It is difficult to prevent blowout of falling ore falling on cooling air.

結局、下部吹込み方式の冷却機においては、型式を問わず、トラフ台車とチャンバーの摺動部から漏洩する冷却風に乗って吹き出る落鉱の吹出し量を低減しようとすれば、該摺動部をシールするシール材を頻繁に交換せざるを得ず、また、上記摺動部の外側に、冷却風に乗って吹き出て堆積・飛散した落鉱を回収するのに、多大な費用と労力を要しているのが現状である。   After all, in the cooler of the lower blowing type, regardless of the type, if the amount of falling ore blown out on the cooling air leaking from the sliding part of the trough cart and the chamber is reduced, the sliding part It is necessary to frequently replace the sealing material that seals, and it takes a great deal of cost and labor to collect the falling ore that has been blown out by cooling air on the outside of the sliding part. What is needed is the current situation.

特開昭58−077537号公報JP 58-077753 A 実開昭61−044199号公報Japanese Utility Model Publication No. 61-044199 特開昭62−242785号公報Japanese Patent Laid-Open No. 62-242785 実開平02−048796号公報Japanese Utility Model Publication No. 02-048796 特開平08−247660号公報Japanese Patent Laid-Open No. 08-247660 特開2009−068721号公報JP 2009-066871 A

そこで、本発明は、下部吹込み式の焼結鉱の冷却機に係る上記現状に鑑み、トラフ台車から吹き出し、飛散する粉粒焼結鉱(落鉱)を、冷却機の系外に飛散させずに集積し、多大な費用と労力をかけずにまとめて回収し、かつ、回収した落鉱を成品焼結鉱として再利用することを課題とし、該課題を解決する焼結鉱の冷却機と粉粒焼結鉱の回収方法を提供することを目的とする。   Therefore, in view of the above-mentioned present situation related to the lower blow type sintered ore cooler, the present invention allows the powder sintered ore (falling ore) blown out and scattered from the trough cart to be scattered outside the cooler system. The sinter ore cooler solves the problem by collecting the collected ore without collecting a large amount of money and labor, and reusing the recovered fallen ore as a product sintered ore. It aims at providing the recovery method of a grain sintered ore.

上記課題を解決するためには、トラフ台車とチャンバーの摺動部から漏洩する冷却風に乗って冷却機の系外に吹き出る落鉱に対する対策を検討する必要があるところ、本発明者らは、トラフ台車とチャンバーの摺動部を封止する封止材は徐々に摩耗するから、落鉱が、該摺動部から漏洩する冷却風に乗って、上記摺動部の外側に吹き出るのを長期間にわたり抑止することは困難であるとの前提に立ち、上記課題を解決する手法について鋭意検討した。   In order to solve the above-mentioned problems, it is necessary to examine measures against falling ore falling out of the system of the cooler on the cooling air leaking from the sliding part of the trough carriage and the chamber, the present inventors, Since the sealing material that seals the sliding parts of the trough carriage and the chamber gradually wears, it is difficult for the falling ore to ride on the cooling air leaking from the sliding parts and blow out to the outside of the sliding parts. Based on the premise that it is difficult to suppress over a period of time, we have intensively studied methods for solving the above problems.

その結果、トラフ台車が移動するレールのレール床の端部に、トラフ台車とチャンバーの摺動部から漏洩する冷却風を遮断する板状部材を立設し、かつ、レール床の端部とチャンバーの下端部の搬送手段を金属板で連結すれば、上記摺動部から冷却風に乗って吹き出る落鉱の飛散を抑止できるとともに、上記板状部材の内側のレール床に堆積した落鉱を、チャンバー内を降下して上記搬送手段に集積する落鉱とともに、多大な費用と労力をかけずに、効率的に容易に回収できることを見いだした。   As a result, a plate-like member that blocks cooling air leaking from the trough carriage and the sliding portion of the chamber is erected at the end of the rail floor of the rail on which the trough carriage moves, and the end of the rail floor and the chamber If the conveying means at the lower end of the plate is connected with a metal plate, it is possible to suppress the scattering of falling ore falling on the cooling air from the sliding part, and the falling ore deposited on the rail floor inside the plate-like member, Along with falling ore falling down in the chamber and accumulating on the conveying means, it has been found that it can be efficiently and easily recovered without much cost and labor.

本発明は、上記知見に基づいてなされたもので、その要旨は以下のとおりである。   This invention was made | formed based on the said knowledge, and the summary is as follows.

(1)レール上を、連結状態で、焼結鉱投入口から排鉱部に移動する複数台のトラフ台車、レールの下部に配置され、移動するトラフ台車上の焼結鉱に冷却風を吹き込む、送風管で連結されたチャンバー、チャンバーの上端部に交換可能に取り付けられ、トラフ台車とチャンバーの摺動部を封止する封止手段、及び、チャンバーの下端部に取り付けられ、トラフ台車からチャンバー内に落下して集積する粉粒焼結鉱を搬送する搬送手段を備える焼結鉱の冷却機において、
レールのレール床の端部と上記搬送手段の間に、チャンバーの傾斜壁に沿って傾斜板が設けられ、
上記レール床の端部又は該端部の近傍に、上記摺動部から漏洩する冷却風に乗って吹き出る粉粒焼結鉱の飛散を抑止する飛散抑止板が、トラフ台車に近接して立設され、
上記レール床に、上記飛散抑止板に衝突してレール床に集積する粉粒焼結鉱と、上記レールに衝突してレール床に集積する粉粒焼結鉱が落下する回収孔が設けられている
ことを特徴とする焼結鉱の冷却機。
(1) A plurality of trough trolleys moving on the rail from the sinter inlet to the discharge section in a connected state, cooling air is blown into the sinter on the moving trough trolley disposed at the lower part of the rail. A chamber connected by a blower tube, a replaceable attachment to the upper end of the chamber, a sealing means for sealing the trough carriage and the sliding portion of the chamber, and a lower end of the chamber, and the chamber from the trough carriage to the chamber In a sinter ore cooler equipped with a conveying means for conveying a granular sintered ore that falls and accumulates therein,
Between the end of the rail floor of the rail and the transfer means, an inclined plate is provided along the inclined wall of the chamber,
At the end of the rail floor or in the vicinity of the end, a scattering suppression plate that suppresses the scattering of the powdered sintered ore that is blown out by the cooling air leaking from the sliding portion is installed in the vicinity of the trough carriage. And
The rail floor is provided with a powder sintered ore that collides with the scattering prevention plate and accumulates on the rail floor, and a recovery hole through which the powder sintered ore that collides with the rail and accumulates on the rail floor falls. A sinter cooler characterized by comprising:

(2)前記飛散抑止板が、粉粒焼結鉱が吹き出る摺動部毎に分割して立設されていることを特徴とする前記(1)に記載の焼結鉱の冷却機。   (2) The sinter ore cooler according to (1), wherein the scattering suppression plate is divided and provided for each sliding portion from which the powdered sintered ore blows.

(3)前記飛散抑止板の先端部の形状が、トラフ台車に向かって湾曲又は折曲する形状であることを特徴とする前記(1)又は(2)に記載の焼結鉱の冷却機。   (3) The sintered ore cooler according to (1) or (2), wherein a shape of a front end portion of the scattering prevention plate is curved or bent toward a trough carriage.

(4)前記トラフ台車の上部が、焼結鉱を通過した冷却排風を排気する排気筒を備えるフードカバーで覆われていることを特徴とする前記(1)〜(3)のいずれかに記載の焼結鉱の冷却機。   (4) The upper part of the trough bogie is covered with a hood cover including an exhaust pipe for exhausting the cooling exhaust air that has passed through the sintered ore. A sinter ore cooler as described.

(5)レール上を、連結状態で、焼結鉱投入口から排鉱部に移動する複数台のトラフ台車に、順次、焼結鉱投入口から焼結鉱を投入し、上記レールの下部に送風管で連結して配置し、トラフ台車とチャンバーの摺動部を封止する封止手段を上端部に有するチャンバーから、移動するトラフ台車上の焼結鉱に冷却風を吹き込んで、焼結鉱を冷却する際、トラフ台車からチャンバー内に落下する粉粒焼結鉱と、上記摺動部から漏洩する冷却風に乗って吹き出る粉状焼結鉱を回収する回収方法であって、
レールのレール床の端部と、チャンバーの下端部に取り付けた、トラフ台車からチャンバー内に落下する粉粒焼結鉱を集積して搬送する搬送手段の間に、チャンバーの傾斜壁に沿って傾斜板を設け、
上記レール床の端部又は該端部の近傍に、上記摺動部から漏洩する冷却風に乗って吹き出る粉粒焼結鉱の飛散を抑止する飛散抑止板を、トラフ台車に近接して立設し、
上記レール床に、上記飛散抑止板に衝突してレール床に集積する粉粒状焼結鉱と、上記レールに衝突してレール床に集積する粉粒焼結鉱が落下する回収孔を設け、
上記落下孔から落下する粉粒焼結鉱を、上記傾斜板で、上記チャンバーの下端部に取り付けた搬送手段に集積し、トラフ台車からチャンバー内に落下して、該搬送手段に集積する粉粒焼結鉱とともに回収する
ことを特徴とする粉粒焼結鉱の回収方法。
(5) On the rails, in a connected state, sinter ore is sequentially introduced from the sinter ore into multiple trough trolleys that move from the sinter ore entrance to the discharge part. Cooling air is blown into the sintered ore on the moving trough carriage from the chamber that has a sealing means for sealing the sliding part of the trough carriage and the chamber at the upper end, and connected by a blower tube, and sintered. When cooling the ore, it is a recovery method for recovering the powdered sintered ore falling into the chamber from the trough carriage, and the powdered sintered ore that blows out on the cooling air leaking from the sliding part,
Inclined along the inclined wall of the chamber between the end of the rail floor of the rail and the conveying means that collects and conveys the sintered powder ore falling from the trough carriage into the chamber, attached to the lower end of the chamber A board,
At the end of the rail floor or in the vicinity of the end, a scattering suppression plate for suppressing the scattering of the powdered sintered ore that is blown out by the cooling air leaking from the sliding portion is provided in the vicinity of the trough carriage. And
The rail floor is provided with a powdered sintered ore that collides with the scattering prevention plate and accumulates on the rail floor, and a recovery hole from which the powder sintered ore that collides with the rail and accumulates on the rail floor falls,
Powder sintered ore falling from the dropping hole is accumulated on the conveying means attached to the lower end portion of the chamber with the inclined plate, dropped into the chamber from the trough carriage, and accumulated on the conveying means. A method for recovering powdered sintered ore, comprising collecting together with sintered ore.

(6)前記搬送手段がベルトコンベアを備えることを特徴とする前記(5)に記載の粉粒焼結鉱の回収方法。   (6) The method for recovering powdered sintered ore according to (5), wherein the conveying means includes a belt conveyor.

本発明によれば、トラフ台車とチャンバーの摺動部から漏洩する冷却風に乗って、該摺動部の外側に吹き出る粉粒焼結鉱(落鉱)を、飛散させずに集積し、多大な費用と労力をかけずに、効率的に容易に回収することができるので、粉粒焼結鉱(落鉱)の利用率を高めることができるともに、冷却機周辺の作業環境を大きく改善することができる。   According to the present invention, the powdered sintered ore (falling ore) that blows on the cooling air leaking from the sliding portion of the trough carriage and the chamber and blows out to the outside of the sliding portion is accumulated without being scattered. Can be efficiently and easily recovered without incurring significant costs and labor, and can increase the utilization rate of powdered sintered ore (falling ore) and greatly improve the working environment around the cooler be able to.

円環型で、下部吹込み式の冷却機の一態様を示す図である。It is a figure which shows the one aspect | mode of the cooler of an annular type and a lower blowing type. 図1に示す冷却機のA−B断面構造を示す図である。It is a figure which shows the AB sectional structure of the cooler shown in FIG. 本発明の焼結鉱の冷却機の断面構造を示す図である。It is a figure which shows the cross-section of the cooler of the sintered ore of this invention.

本発明の焼結鉱の冷却機(以下「本発明冷却機」ということがある。)は、
レール上を、連結状態で、焼結鉱投入口から排鉱部に移動する複数台のトラフ台車、レールの下部に配置され、移動するトラフ台車上の焼結鉱に冷却風を吹き込む、送風管で連結されたチャンバー、チャンバーの上端部に交換可能に取り付けられ、トラフ台車とチャンバーの摺動部を封止する封止手段、及び、チャンバーの下端部に取り付けられ、トラフ台車からチャンバー内に落下して集積する粉粒焼結鉱を搬送する搬送手段を備える焼結鉱の冷却機において、
レールのレール床の端部と上記搬送手段の間に、チャンバーの傾斜壁に沿って傾斜板が設けられ、
上記レール床の端部又は該端部の近傍に、上記摺動部から漏洩する冷却風に乗って吹き出る粉粒焼結鉱の飛散を抑止する飛散抑止板が、トラフ台車に近接して立設され、
上記レール床に、上記飛散抑止板に衝突してレール床に集積する粉粒焼結鉱と、上記レールに衝突してレール床に集積する粉粒焼結鉱が落下する回収孔が設けられている
ことを特徴とする。
The sinter ore cooler of the present invention (hereinafter sometimes referred to as “the present invention cooler”)
A plurality of trough trolleys that move from the sinter ore entrance to the discharge section in a connected state on the rail, a blow pipe that is arranged at the bottom of the rail and blows cooling air into the sinter on the moving trough trolley The chamber connected in the above, attached to the upper end of the chamber in a replaceable manner, sealing means for sealing the trough carriage and the sliding part of the chamber, and attached to the lower end of the chamber and dropped from the trough carriage into the chamber In the sinter ore cooler equipped with a conveying means for conveying the granular sintered ore to be accumulated,
Between the end of the rail floor of the rail and the transfer means, an inclined plate is provided along the inclined wall of the chamber,
At the end of the rail floor or in the vicinity of the end, a scattering suppression plate that suppresses the scattering of the powdered sintered ore that is blown out by the cooling air leaking from the sliding portion is installed in the vicinity of the trough carriage. And
The rail floor is provided with a powder sintered ore that collides with the scattering prevention plate and accumulates on the rail floor, and a recovery hole through which the powder sintered ore that collides with the rail and accumulates on the rail floor falls. It is characterized by being.

本発明の粉粒焼結鉱の回収方法(以下「本発明回収方法」ということがある。)は、
レール上を、連結状態で、焼結鉱投入口から排鉱部に移動する複数台のトラフ台車に、順次、焼結鉱投入口から焼結鉱を投入し、上記レールの下部に送風管で連結して配置し、トラフ台車とチャンバーの摺動部を封止する封止手段を上端部に有するチャンバーから、移動するトラフ台車上の焼結鉱に冷却風を吹き込んで、焼結鉱を冷却する際、トラフ台車からチャンバー内に落下する粉粒焼結鉱と、上記摺動部から漏洩する冷却風に乗って吹き出る粉状焼結鉱を回収する回収方法であって、
レールのレール床の端部と、チャンバーの下端部に取り付けた、トラフ台車からチャンバー内に落下する粉粒焼結鉱を集積して搬送する搬送手段の間に、チャンバーの傾斜壁に沿って傾斜板を設け、
上記レール床の端部又は該端部の近傍に、上記摺動部から漏洩する冷却風に乗って吹き出る粉粒焼結鉱の飛散を抑止する飛散抑止板を、トラフ台車に近接して立設し、
上記レール床に、上記飛散抑止板に衝突してレール床に集積する粉粒状焼結鉱と、上記レールに衝突してレール床に集積する粉粒焼結鉱が落下する回収孔を設け、
上記落下孔から落下する粉粒焼結鉱を、上記傾斜板で、上記チャンバーの下端部に取り付けた搬送手段に集積し、トラフ台車からチャンバー内に落下して、該搬送手段に集積する粉粒焼結鉱とともに回収する
ことを特徴とする。
The method for recovering the granular sintered ore of the present invention (hereinafter sometimes referred to as “the recovery method of the present invention”)
On the rails, in a connected state, sinter ore is sequentially introduced from the sinter ore into a plurality of trough carts that move from the sinter ore entrance to the discharge section, Cooling is blown into the sintered ore on the moving trough carriage from the chamber that has the sealing means for sealing the sliding part of the trough carriage and the chamber at the upper end. When collecting the powdered sintered ore falling into the chamber from the trough cart, and a recovery method of collecting the powdered sintered ore that blows off the cooling air leaking from the sliding portion,
Inclined along the inclined wall of the chamber between the end of the rail floor of the rail and the conveying means that collects and conveys the sintered powder ore falling from the trough carriage into the chamber, attached to the lower end of the chamber A board,
At the end of the rail floor or in the vicinity of the end, a scattering suppression plate for suppressing the scattering of the powdered sintered ore that is blown out by the cooling air leaking from the sliding portion is provided in the vicinity of the trough carriage. And
The rail floor is provided with a powdered sintered ore that collides with the scattering prevention plate and accumulates on the rail floor, and a recovery hole from which the powder sintered ore that collides with the rail and accumulates on the rail floor falls,
Powder sintered ore falling from the dropping hole is accumulated on the conveying means attached to the lower end portion of the chamber with the inclined plate, dropped into the chamber from the trough carriage, and accumulated on the conveying means. It is characterized by being collected together with the sintered ore.

以下、本発明冷却機と本発明回収方法について、図面に基づいて説明する。   Hereinafter, the cooler of the present invention and the recovery method of the present invention will be described with reference to the drawings.

図3に、本発明の焼結鉱の冷却機の断面構造を示す。本発明冷却機と本発明回収方法は、主として、DL式焼結機で焼結した焼結鉱の冷却に好適であるが、焼結鉱は、DL式焼結機で焼結した焼結鉱に限定されず、他の焼結機で焼結した焼結鉱の冷却にも適用可能である。   FIG. 3 shows a cross-sectional structure of the sintered ore cooler of the present invention. The cooling device of the present invention and the recovery method of the present invention are mainly suitable for cooling the sintered ore sintered by the DL type sintering machine, but the sintered ore is sintered ore sintered by the DL type sintering machine. However, the present invention can be applied to cooling of sintered ore sintered with another sintering machine.

図3に示す断面構造は、基本的には、図2に示す断面構造(図1に示す冷却機のA−B断面構造)を基礎とするものであり、図2に示す構成部材・部位と同じ構成部材・部位には、図2の符号又は番号と同じ符号又は番号が付されているが、図3に示す断面構造は、下部吹込み方式の冷却機に共通する断面構造でもあるので、以下の説明は、型式を問わず、下部吹込み方式の冷却機の断面構造に係る説明である。   The cross-sectional structure shown in FIG. 3 is basically based on the cross-sectional structure shown in FIG. 2 (A-B cross-sectional structure of the cooler shown in FIG. 1). The same reference numerals or numbers as those in FIG. 2 are attached to the same constituent members / parts, but the cross-sectional structure shown in FIG. 3 is also a cross-sectional structure common to the lower blow type cooler, The following description relates to a cross-sectional structure of a lower blowing type cooler regardless of the type.

図3に示す断面構造においては、トラフ台車1が移動するレール2の外側のレール床14に、トラフ台車1とチャンバー3の摺動部Aから漏洩する冷却風(図中「両側の摺動部Aに向かう2点鎖線」参照)を遮断し、該摺動部から冷却風に乗って吹き出る落鉱の飛散を抑止する飛散抑止板15が、トラフ台車1に近接して立設されている。   In the cross-sectional structure shown in FIG. 3, cooling air leaked from the sliding portion A of the trough carriage 1 and the chamber 3 on the rail floor 14 outside the rail 2 on which the trough carriage 1 moves (“sliding portions on both sides in the figure”). A scattering suppression plate 15 that blocks the falling of the falling ore that is blown by cooling air from the sliding portion is provided in the vicinity of the trough carriage 1.

飛散抑止板15を、トラフ台車1に近接して立設した点が、従来の冷却機(図2、参照)と実質的に異なる点であり、本発明冷却機及び本発明回収方法の特徴の一つである。   The point that the scattering prevention plate 15 is erected in the vicinity of the trough carriage 1 is substantially different from the conventional cooler (see FIG. 2), and the features of the cooler of the present invention and the recovery method of the present invention are characteristic. One.

飛散抑止板15は、トラフ台車1とチャンバー3の摺動部Aの全周にわたって立設してもよいし、落鉱が吹き出る摺動部毎に分割して立設してもよい。   The scattering prevention plate 15 may be erected over the entire circumference of the sliding part A of the trough carriage 1 and the chamber 3, or may be erected separately for each sliding part from which falling ore blows off.

トラフ台車1の支持部材11とチャンバー3の摺動部Aから漏洩する冷却風に乗って、該摺動部Aの外側に吹き出る落鉱10cの一部は、レール2に衝突して、チャンバー3の垂直壁3aとレール2の間に集積し、また、車輪1aの間からレール2の外側に吹き出る落鉱10cは、飛散抑止板15に衝突して、レール2と飛散抑止板14の間に集積する。   Part of the falling ore 10c that blows off the cooling air leaked from the support member 11 of the trough carriage 1 and the sliding portion A of the chamber 3 and blows to the outside of the sliding portion A collides with the rail 2, and the chamber 3 The falling ore 10c that is accumulated between the vertical wall 3a and the rail 2 and blows to the outside of the rail 2 from between the wheels 1a collides with the scattering suppression plate 15 and is between the rail 2 and the scattering suppression plate 14. Accumulate.

レール床14には、堆積する落鉱10cを回収する回収孔14aを設けているので、レール床14上に集積した落鉱10cは、回収孔14aから落下する。   Since the rail floor 14 is provided with a recovery hole 14a for recovering the deposited falling ore 10c, the falling ore 10c accumulated on the rail floor 14 falls from the recovery hole 14a.

チャンバー3の下端部には、ダストコンベア(図示なし)を備えるダストコンベアケーシング7(搬送手段)が取り付けられていて、レール床14の端部とダストコンベアケーシング7の間には、チャンバー3の傾斜壁3aに沿って、金属製の傾斜板16が取り付けられているので、レール床14の回収孔14aから落下した落鉱10cは、傾斜板16に沿って降下し、ダストコンベアケーシング7内のダストコンベア上に堆積する。   A dust conveyor casing 7 (conveying means) including a dust conveyor (not shown) is attached to the lower end of the chamber 3, and the chamber 3 is inclined between the end of the rail floor 14 and the dust conveyor casing 7. Since the metal inclined plate 16 is attached along the wall 3a, the falling ore 10c dropped from the recovery hole 14a of the rail floor 14 descends along the inclined plate 16, and the dust in the dust conveyor casing 7 is removed. Deposit on the conveyor.

トラフ台車1の移動中、トラフ台車1の格子状の底部から落下する落鉱10bの中で比較的重量があり、トラフ台車1とチャンバー3の摺動部Aから漏洩する冷却風に乗って冷却機の系外に吹き出ない落鉱10dは、チャンバー3内を降下し、チャンバー3の傾斜壁3bに沿って落鉱落下管13に達し、落鉱落下管13を通ってダストコンベアケーシング7内のダストコンベア上に堆積する。   While the trough carriage 1 is moving, it is relatively heavy among the falling ore 10b falling from the bottom of the trough carriage 1 and cooled by cooling air leaked from the sliding portion A of the trough carriage 1 and the chamber 3. The falling ore 10d not blown out of the machine descends in the chamber 3, reaches the falling ore fall pipe 13 along the inclined wall 3b of the chamber 3 and passes through the falling ore fall pipe 13 in the dust conveyor casing 7. Deposit on the dust conveyor.

このように、本発明冷却機及び本発明回収方法においては、トラフ台車1の移動中、トラフ台車1の格子状の底部から落下する落鉱10b(チャンバー外に吹き出る落鉱10cとチャンバー3内を降下する落鉱10d)を、チャンバー3の下端部に配置したコンベアベルトで集積し、落鉱10dを冷却機の系外に飛散させずに、かつ、まとめて回収することができる。この点も、本発明冷却機及び本発明回収方法の特徴である。   As described above, in the cooler of the present invention and the recovery method of the present invention, during the movement of the trough carriage 1, falling ore falling from the lattice-shaped bottom of the trough carriage 1 (the falling ore falling out of the chamber and the inside of the chamber 3). The falling ore falling 10d) can be collected by a conveyor belt arranged at the lower end of the chamber 3, and the falling ore 10d can be collected together without being scattered outside the system of the cooler. This point is also a feature of the cooler of the present invention and the recovery method of the present invention.

したがって、本発明冷却機及び本発明回収方法によれば、落鉱10bの回収を、多大な費用と労力を必要とせずに、効率的に容易に行うことができるとともに、冷却機周辺の作業環境を大きく改善することができる。   Therefore, according to the cooling machine of the present invention and the recovery method of the present invention, the falling ore 10b can be efficiently and easily recovered without requiring a great deal of cost and labor, and the working environment around the cooling machine. Can be greatly improved.

図3には、飛散抑止板15を、レール床14の端部に垂直に立設する態様を示したが、飛散抑止板15は、トラフ台車1とチャンバー3の摺動部Aから漏洩する冷却風を遮断する機能を果たすものであればよく、その限りで、特定の立設態様及び形状に限定されない。例えば、飛散抑止板15は、レール床14の端部近傍に立設してもよく、また、トラフ台車1に対して斜めに立設してもよいし、先端部がトラフ台車1に対して湾曲又は折曲する形状のものでもよい。   FIG. 3 shows a mode in which the scattering prevention plate 15 is erected vertically to the end portion of the rail floor 14. However, the scattering prevention plate 15 is cooled to leak from the sliding portion A of the trough carriage 1 and the chamber 3. What is necessary is just to perform the function which interrupts | blocks a wind, and as long as it is not limited to a specific standing aspect and shape. For example, the scattering prevention plate 15 may be erected in the vicinity of the end portion of the rail floor 14, may be erected obliquely with respect to the trough carriage 1, and the tip end portion thereof is with respect to the trough trolley 1. It may have a curved or bent shape.

さらに、飛散抑止板15は、通常、金属板であるが、一人の作業者が容易に取り外せる程度の軽量のものが好ましく、冷却機の保守・点検時に干渉しないように、立設態様及び形状を設計する。   Further, the scattering prevention plate 15 is usually a metal plate, but is preferably light enough to be easily removed by a single operator, and has a standing manner and shape so as not to interfere during maintenance and inspection of the cooling machine. design.

次に、本発明の実施例について説明するが、実施例での条件は、本発明の実施可能性及び効果を確認するために採用した一条件例であり、本発明は、この一条件例に限定されるものではない。本発明は、本発明の要旨を逸脱せず、本発明の目的を達成する限りにおいて、種々の条件を採用し得るものである。   Next, examples of the present invention will be described. The conditions in the examples are one example of conditions used for confirming the feasibility and effects of the present invention, and the present invention is based on this one example of conditions. It is not limited. The present invention can adopt various conditions as long as the object of the present invention is achieved without departing from the gist of the present invention.

(実施例1)
従来、120t/月程度の落鉱が発生し、その処理に、多大な費用と労力を必要としていたが、図3に示す断面構造の円環型の冷却機で、焼結鉱を冷却したので、120t/月発生する落鉱を、多大な費用と労力を必要とせずに容易に回収することができた。また、120t/月の内、約60t/月を篩上5mm以上の成品焼結鉱として回収できたので、落鉱の利用率が向上した。
Example 1
Conventionally, ore fall of about 120 t / month has occurred, and a large amount of cost and labor have been required for its treatment, but the sintered ore was cooled by an annular type cooling machine having a cross-sectional structure shown in FIG. It was possible to easily recover the falling ore generated at 120 t / month without requiring a large amount of cost and labor. Moreover, since about 60 t / month of 120 t / month was recovered as a product sintered ore having a size of 5 mm or more on the sieve, the utilization rate of falling ore was improved.

前述したように、本発明によれば、トラフ台車とチャンバーの摺動部から漏洩する冷却風に乗って、該摺動部の外側に吹き出る粉粒焼結鉱(落鉱)を、飛散させずに集積し、多大な費用と労力をかけずに、効率的に容易に回収することができるので、粉粒焼結鉱(落鉱)の利用率を高めるとともに、冷却機周辺の作業環境を大きく改善することができる。よって、本発明は、鉄鋼産業において利用可能性が高いものである。   As described above, according to the present invention, the powdered sintered ore (falling ore) blown to the outside of the sliding portion on the cooling air leaking from the sliding portion of the trough carriage and the chamber is not scattered. Can be efficiently and easily recovered without much cost and labor, increasing the utilization rate of powdered sintered ore (falling ore) and increasing the working environment around the cooler Can be improved. Therefore, the present invention has high applicability in the steel industry.

1 トラフ台車
1a 車輪
2 レール
3 チャンバー
3a 垂直壁
3b 傾斜壁
4 送風管
5 排気筒
6 フードカバー
7 ダストコンベアケーシング
8 焼結鉱投入口
9 排鉱部
10 焼結機
10a 焼結鉱
10b、10c、10d 落鉱(粉粒焼結鉱)
11 支持部材
12 シール材
13 落鉱落下管
14 レール床
14a 回収孔
15 飛散抑止板
16 傾斜板
A 摺動部
DESCRIPTION OF SYMBOLS 1 Trough cart 1a Wheel 2 Rail 3 Chamber 3a Vertical wall 3b Inclined wall 4 Blower pipe 5 Exhaust pipe 6 Hood cover 7 Dust conveyor casing 8 Sinter ore inlet 9 Exhaust part 10 Sintering machine 10a Sinter ore 10b, 10c, 10d falling ore (powdered ore)
DESCRIPTION OF SYMBOLS 11 Support member 12 Seal material 13 Falling-out fall pipe 14 Rail floor 14a Recovery hole 15 Spattering suppression plate 16 Inclined plate A Sliding part

Claims (6)

レール上を、連結状態で、焼結鉱投入口から排鉱部に移動する複数台のトラフ台車、レールの下部に配置され、移動するトラフ台車上の焼結鉱に冷却風を吹き込む、送風管で連結されたチャンバー、チャンバーの上端部に交換可能に取り付けられ、トラフ台車とチャンバーの摺動部を封止する封止手段、及び、チャンバーの下端部に取り付けられ、トラフ台車からチャンバー内に落下して集積する粉粒焼結鉱を搬送する搬送手段を備える焼結鉱の冷却機において、
上記レールのレール床の端部と上記搬送手段の間に、チャンバーの傾斜壁に沿って傾斜板が設けられ、
上記レール床の端部又は該端部の近傍に、上記摺動部から漏洩する冷却風に乗って吹き出る粉粒焼結鉱の飛散を抑止する飛散抑止板が、トラフ台車に近接して立設され、
上記レール床に、上記飛散抑止板に衝突してレール床に集積する粉粒焼結鉱と、上記レールに衝突してレール床に集積する粉粒焼結鉱が落下する回収孔が設けられている
ことを特徴とする焼結鉱の冷却機。
A plurality of trough trolleys that move from the sinter ore entrance to the discharge section in a connected state on the rail, a blow pipe that is arranged at the bottom of the rail and blows cooling air into the sinter on the moving trough trolley The chamber connected in the above, attached to the upper end of the chamber in a replaceable manner, sealing means for sealing the trough carriage and the sliding part of the chamber, and attached to the lower end of the chamber and dropped from the trough carriage into the chamber In the sinter ore cooler equipped with a conveying means for conveying the granular sintered ore to be accumulated,
Between the end of the rail floor of the rail and the transport means, an inclined plate is provided along the inclined wall of the chamber,
At the end of the rail floor or in the vicinity of the end, a scattering suppression plate that suppresses the scattering of the powdered sintered ore that is blown out by the cooling air leaking from the sliding portion is installed in the vicinity of the trough carriage. And
The rail floor is provided with a powder sintered ore that collides with the scattering prevention plate and accumulates on the rail floor, and a recovery hole through which the powder sintered ore that collides with the rail and accumulates on the rail floor falls. A sinter cooler characterized by comprising:
前記飛散抑止板が、粉粒焼結鉱が吹き出る摺動部毎に分割して立設されていることを特徴とする請求項1に記載の焼結鉱の冷却機。   2. The sinter cooler according to claim 1, wherein the scattering suppression plate is erected separately for each sliding portion from which the granular sintered ore is blown. 前記飛散抑止板の先端部の形状が、トラフ台車に向かって湾曲又は折曲する形状であることを特徴とする請求項1又は2に記載の焼結鉱の冷却機。   The sinter ore cooler according to claim 1 or 2, wherein the shape of the front end portion of the scattering prevention plate is curved or bent toward the trough carriage. 前記トラフ台車の上部が、焼結鉱を通過した冷却排風を排気する排気筒を備えるフードカバーで覆われていることを特徴とする請求項1〜3のいずれか1項に記載の焼結鉱の冷却機。   The upper part of the said trough trolley is covered with the hood cover provided with the exhaust pipe which exhausts the cooling exhaust wind which passed the sintered ore, The sintering of any one of Claims 1-3 characterized by the above-mentioned. Ore cooling machine. レール上を、連結状態で、焼結鉱投入口から排鉱部に移動する複数台のトラフ台車に、順次、焼結鉱投入口から焼結鉱を投入し、レールの下部に送風管で連結して配置し、トラフ台車とチャンバーの摺動部を封止する封止手段を上端部に有するチャンバーから、移動するトラフ台車上の焼結鉱に冷却風を吹き込んで、焼結鉱を冷却する際、トラフ台車からチャンバー内に落下する粉粒焼結鉱と、上記摺動部から漏洩する冷却風に乗って吹き出る粉状焼結鉱を回収する回収方法であって、
レールのレール床の端部と、チャンバーの下端部に取り付けた、トラフ台車からチャンバー内に落下する粉粒焼結鉱を集積して搬送する搬送手段の間に、チャンバーの傾斜壁に沿って傾斜板を設け、
上記レール床の端部又は該端部の近傍に、上記摺動部から漏洩する冷却風に乗って吹き出る粉粒焼結鉱の飛散を抑止する飛散抑止板を、トラフ台車に近接して立設し、
上記レール床に、上記飛散抑止板に衝突してレール床に集積する粉粒状焼結鉱と、上記レールに衝突してレール床に集積する粉粒焼結鉱が落下する回収孔を設け、
上記落下孔から落下する粉粒焼結鉱を、上記傾斜板で、上記チャンバーの下端部に取り付けた搬送手段に集積し、トラフ台車からチャンバー内に落下して、該搬送手段に集積する粉粒焼結鉱とともに回収する
ことを特徴とする粉粒焼結鉱の回収方法。
On the rails, in a connected state, sinter ore is sequentially introduced from the sinter ore into multiple trough trolleys that move from the sinter ore entrance to the discharge section, and connected to the lower part of the rail with a blower pipe. Then, cooling air is blown into the sintered ore on the moving trough cart from the chamber having the sealing means for sealing the sliding portion of the trough cart and the chamber at the upper end portion to cool the sintered ore. At this time, a method for recovering the powdered sintered ore falling into the chamber from the trough carriage and the powdered sintered ore that blows out on the cooling air leaking from the sliding portion,
Inclined along the inclined wall of the chamber between the end of the rail floor of the rail and the conveying means that collects and conveys the sintered powder ore falling from the trough carriage into the chamber, attached to the lower end of the chamber A board,
At the end of the rail floor or in the vicinity of the end, a scattering suppression plate for suppressing the scattering of the powdered sintered ore that is blown out by the cooling air leaking from the sliding portion is provided in the vicinity of the trough carriage. And
The rail floor is provided with a powdered sintered ore that collides with the scattering prevention plate and accumulates on the rail floor, and a recovery hole from which the powder sintered ore that collides with the rail and accumulates on the rail floor falls,
Powder sintered ore falling from the dropping hole is accumulated on the conveying means attached to the lower end portion of the chamber with the inclined plate, dropped into the chamber from the trough carriage, and accumulated on the conveying means. A method for recovering powdered sintered ore, comprising collecting together with sintered ore.
前記搬送手段がベルトコンベアを備えることを特徴とする請求項5に記載の粉粒焼結鉱の回収方法。   6. The method for recovering sintered powder ore according to claim 5, wherein the conveying means includes a belt conveyor.
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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53153006U (en) * 1977-05-06 1978-12-01
JPS55146997U (en) * 1979-04-10 1980-10-22
JPS62102996U (en) * 1985-12-17 1987-06-30
JPH11270972A (en) * 1998-03-23 1999-10-05 Nippon Steel Corp Duct exhaust device in sintering machine cooling device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53153006U (en) * 1977-05-06 1978-12-01
JPS55146997U (en) * 1979-04-10 1980-10-22
JPS62102996U (en) * 1985-12-17 1987-06-30
JPH11270972A (en) * 1998-03-23 1999-10-05 Nippon Steel Corp Duct exhaust device in sintering machine cooling device

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