JPS62247035A - Blast furnace for sintered ore - Google Patents
Blast furnace for sintered oreInfo
- Publication number
- JPS62247035A JPS62247035A JP9003186A JP9003186A JPS62247035A JP S62247035 A JPS62247035 A JP S62247035A JP 9003186 A JP9003186 A JP 9003186A JP 9003186 A JP9003186 A JP 9003186A JP S62247035 A JPS62247035 A JP S62247035A
- Authority
- JP
- Japan
- Prior art keywords
- sintered ore
- blast furnace
- furnace
- sintering
- hot
- 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.)
- Pending
Links
- 238000005245 sintering Methods 0.000 claims abstract description 29
- 238000011084 recovery Methods 0.000 claims description 4
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000007858 starting material Substances 0.000 abstract 2
- 239000002994 raw material Substances 0.000 description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910000805 Pig iron Inorganic materials 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 239000000571 coke Substances 0.000 description 5
- 235000019738 Limestone Nutrition 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000006028 limestone Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000009770 conventional sintering Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Landscapes
- Blast Furnaces (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、鉄鉱石を還元し銑鉄を得ろために用いられる
焼結炉と高炉とを複合した銑鉄用焼結高炉に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a sintering blast furnace for pig iron, which is a combination of a sintering furnace and a blast furnace, which are used to reduce iron ore and obtain pig iron.
一般に、鉄鉱石から銑鉄をうろに当っては、鉄鉱石を直
線型焼結機にて焼結し、得られた焼結鉱をシングルロー
ルクラッシャー等で粉砕し、次いで篩分けし、空気にて
冷却後、整粒された焼結鉱を高炉に送鉱し、媒溶剤及び
コークスと一緒に高炉に挿入し、高炉において、還元溶
融し銑鉄を製造している。Generally, when making pig iron from iron ore, the iron ore is sintered in a linear sintering machine, the obtained sintered ore is crushed in a single roll crusher, etc., then it is sieved, and then air sintered. After cooling, the sized sintered ore is sent to a blast furnace, inserted into the blast furnace together with a solvent and coke, and reduced and melted in the blast furnace to produce pig iron.
従来の焼結機においては、第２図の焼結における二ネギ
バランスシートに示す如く、焼結鉱のもつ顕然の大半が
、放散されている。In the conventional sintering machine, as shown in the balance sheet for sintering in FIG. 2, most of the sintered ore is dissipated.
近年、焼結機の焼結鉱冷却ガスの熱回収のために゛、ボ
イラーを設け、廃熱ボイラーにて焼結鉱の顕熱を回収し
ているが、その回収率は、第２図に示す如く３０〜４０
％程度でそれ程高くなく、依然として放斂熱も可成りの
量を占めている。In recent years, in order to recover heat from the sintered ore cooling gas in the sintering machine, a boiler has been installed and the sensible heat of the sintered ore is recovered using the waste heat boiler, but the recovery rate is shown in Figure 2. 30-40 as shown
%, which is not that high, and still radiates a considerable amount of heat.
本発明は、前述の製銑の焼結工程におけろ、焼結鉱の顕
熱を放散することなく、有効に活用し、エネルギー効率
の向上を図るための装置を開発することを目的とするも
のである。The purpose of the present invention is to develop an apparatus for effectively utilizing the sensible heat of sintered ore without dissipating it in the above-mentioned ironmaking sintering process, thereby improving energy efficiency. It is something.
本発明は、前述の問題点を解決するために為されたもの
であり、
高炉炉頂上に、上向き通風式堅型焼結炉を設け、該焼結
炉からの熱焼結鉱を粉砕機により粉砕し、次いでホット
スクリーンにより＋５−熱焼結鉱を高炉に直接装入し熱
を回収することを特徴とする焼結−炉である。The present invention was made in order to solve the above-mentioned problems. An upwardly ventilated vertical sintering furnace is installed on the top of the blast furnace, and the hot sintered ore from the sintering furnace is passed through a crusher. This is a sintering furnace characterized by pulverizing and then directly charging +5-heat sintered ore into a blast furnace through a hot screen and recovering the heat.
この発明においては、上向き通風式堅型焼結炉を高炉炉
頂上に設けたので、焼結機から排出された熱焼結鉱を粉
砕、篩分は後、直接高炉に石灰石、コークスと共に装入
し、高炉にて銑鉄を得るに当って、焼結鉱の顕熱が有効
に利用できる。In this invention, an upward draft type vertical sintering furnace is installed at the top of the blast furnace, so the hot sintered ore discharged from the sintering machine is crushed, sieved, and then directly charged into the blast furnace together with limestone and coke. However, the sensible heat of sintered ore can be effectively used to produce pig iron in a blast furnace.
次に実施例について述べる。Next, examples will be described.
第１図は、この発明の実施例を示す模式図である。 FIG. 1 is a schematic diagram showing an embodiment of the invention.
図において上向通風竪型焼結炉１を図示する如く高炉２
の炉頂上に設ける。In the figure, an upward draft vertical sintering furnace 1 is shown, and a blast furnace 2 is shown.
installed on top of the furnace.
竪型焼結炉１に焼結配合原料を原料配合槽１１から竪型
焼結炉１に一定量連続的に装入し、バーナー１３にて着
火し、押し込みブロー９１４より空気を送風し焼結する
。安定着火、燃焼が確認されたら、バーナー１３は機外
に引き抜く。ここで、原料は上部かられ連続的に供給さ
れ、また焼結された焼結鉱は、引き出しローラ１６を介
して連続的に引き出されるため、一旦着火・燃焼すれば
、点火装置なしに、一定厚の燃焼層が存在し、該焼結機
の連続操業が可能である。焼結排ガスは排風ブローワ１
５にて排気され、次の排気ガス熱回収設備に送られる。A certain amount of raw material for sintering is continuously charged into the vertical sintering furnace 1 from the raw material mixing tank 11, ignited by the burner 13, and sintered by blowing air from the forced blower 914. do. Once stable ignition and combustion are confirmed, burner 13 is pulled out of the machine. Here, the raw material is continuously supplied from the top, and the sintered ore is continuously pulled out via the pull-out roller 16, so once it is ignited and burned, it can be burned at a constant rate without the need for an igniter. A thick combustion layer is present, allowing continuous operation of the sintering machine. Sintering exhaust gas is handled by exhaust blower 1
5, and sent to the next exhaust gas heat recovery facility.
焼結された焼結鉱は、下部からの押込みブロワ−１４か
らの空気と一部熱交換しながら該焼結機下部に移行して
行き引き出しローラー１６を介して熱焼結鉱を引き出し
クラッシャー１７により粉砕し次いでホットスクリーン
１８にて篩分けし、粒度を調整し＋５鴫粒度の熱焼結鉱
は熱焼結鉱ホッパー２１に貯留され、−５−粒度のもの
は返鉱として原料配合槽に繰返される。The sintered ore moves to the lower part of the sintering machine while partially exchanging heat with the air from the push-in blower 14 from the lower part, and the hot sintered ore is pulled out via the pull-out roller 16 and is passed to the crusher 17. The hot sintered ore with a grain size of +5 is stored in the hot sintered ore hopper 21, and the one with a grain size of -5 is sent to the raw material mixing tank as return ore. repeated.
＋ ５ Ｍ粒度の熱焼結鉱（温度５００〜６００℃）は
、石灰石、コークスコンベヤーよる石灰石とコークスと
共に高炉２に装入される。高炉２内にて、焼結鉱、石灰
、コークスは、反応還元溶融し、銑鉄、スラグに分けら
れ、高温の高炉廃ガスは先ず乾式ダストキャツチャ−２
３にて除塵後冷却することな（炉頂圧発電機２４に送ら
れ、該発電機２４により発電する。Hot sintered ore (temperature 500-600°C) with a particle size of +5 M is charged into the blast furnace 2 together with limestone, limestone and coke from a coke conveyor. In the blast furnace 2, sintered ore, lime, and coke undergo reaction reduction and melting, and are separated into pig iron and slag.The high-temperature blast furnace waste gas is first transferred to the dry dust catcher 2.
After dust removal in step 3, the reactor is cooled (sent to the furnace top pressure generator 24, and generated by the generator 24).
この発明の焼結高炉の特徴は、
■ 燃焼用の空気は押し込みブロワ−１４により、バー
ナー１３の下部から押し込まれ、焼結鉱と一部熱交換し
、焼結配合原料中の粉コークスを燃焼させ、焼結反応を
起した後、配合原料層と熱交換し、排風ブロワ−１５に
て系外に排出する。The characteristics of the sintered blast furnace of this invention are as follows: - Combustion air is forced into the bottom of the burner 13 by the forced blower 14, exchanges heat with the sintered ore, and burns the coke powder in the sintered raw materials. After causing a sintering reaction, it exchanges heat with the mixed raw material layer and is discharged from the system by an exhaust blower 15.
■ また高炉２において、炉上部の装入原料の温度が前
述の如く、常温より５００〜６００℃に上昇するので炉
頂高炉ガス温度も１５０℃より２５０〜３００℃に上昇
する。(2) Furthermore, in the blast furnace 2, as the temperature of the charged raw material in the upper part of the furnace rises from room temperature to 500 to 600°C, the temperature of the blast furnace gas at the top of the furnace also rises from 150°C to 250 to 300°C.
■ 炉頂高炉ガス温度が上昇するので、炉頂圧発電機に
よる電気エネルギーの回収が増加する。■ As the top blast furnace gas temperature increases, the recovery of electrical energy by the top pressure generator increases.
■ 更に装入原料の温度が平均的に上昇するため、高炉
の炉高を低くすることが可能となり、高炉付帯設備の簡
略化が計れる。■ Furthermore, since the temperature of the charged raw material increases on average, it becomes possible to lower the height of the blast furnace, and the auxiliary equipment of the blast furnace can be simplified.
等が挙げられろ。etc. can be mentioned.
この発明の焼結高炉によれば、 ■ 焼結鉱の頭熱が有効に利用できる。 According to the sintered blast furnace of this invention, ■ Head heat of sintered ore can be used effectively.
■ 従来の焼結工程のメイン排ガスも配合原料層と完全
熱交換が可能となるため、常温まで有効利用が可能であ
る。■ The main exhaust gas from the conventional sintering process can completely exchange heat with the blended raw material layer, so it can be used effectively up to room temperature.
■ 乾式炉頂圧発電設備と本発明とを組み合せることに
より、高温炉頂ガスのエネルギーも有効に回収できる。(2) By combining the dry furnace top pressure power generation equipment with the present invention, energy from high temperature furnace top gas can also be effectively recovered.
■ 高炉装入原料が熱焼結鉱のため平均的に上昇するた
め、高炉の炉高を低くすることが可能となり、高炉設備
の簡略化が計れる。■ Since the raw material charged into the blast furnace rises on average because it is a hot sintered ore, it is possible to lower the height of the blast furnace and simplify the blast furnace equipment.
■ 焼結〜高炉を含めた熱エネルギーの有効利用が計れ
る。■ Effective use of thermal energy including sintering and blast furnaces.
等の効果を奏するものである。It has the following effects.
第１図は本発明の説明図、第２図は焼結機の熱バランス
の説明図である。
図において、１：上向通風式堅型焼結炉、２：、高炉、
１１：原料配合槽、１３：バーナ、１４：押し込みブロ
ワ−１１５：ｗＩ風ジブロワ１１６：引き出しローラー
、１７：クラッシャー、１８：ホツ１−スクリーン、２
１：熱焼結鉱ポツパー、２２：コンベヤー、２３：ダス
トキャツチャ−，２４：炉頂圧発電機である。FIG. 1 is an explanatory diagram of the present invention, and FIG. 2 is an explanatory diagram of the heat balance of the sintering machine. In the figure, 1: upward draft type vertical sintering furnace, 2: blast furnace,
11: Raw material blending tank, 13: Burner, 14: Push-in blower-115: wI style blower 116: Pull-out roller, 17: Crusher, 18: Hot 1-screen, 2
1: Hot sintered ore popper, 22: Conveyor, 23: Dust catcher, 24: Furnace top pressure generator.
Claims (1)
炉からの熱焼結鉱を粉砕機により粉砕し、次いでホット
スクリーンにより、＋５ｍｍ熱焼結鉱を高炉に直接装入
し顕熱を回収することを特徴とする焼結高炉。An upward draft type vertical sintering furnace is installed at the top of the blast furnace, and the hot sintered ore from the sintering furnace is crushed by a crusher, and then +5 mm hot sintered ore is directly charged into the blast furnace using a hot screen. A sintering blast furnace characterized by the recovery of sensible heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9003186A JPS62247035A (en) | 1986-04-21 | 1986-04-21 | Blast furnace for sintered ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9003186A JPS62247035A (en) | 1986-04-21 | 1986-04-21 | Blast furnace for sintered ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62247035A true JPS62247035A (en) | 1987-10-28 |
Family
ID=13987296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9003186A Pending JPS62247035A (en) | 1986-04-21 | 1986-04-21 | Blast furnace for sintered ore |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62247035A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011063672A1 (en) * | 2009-11-24 | 2011-06-03 | 钢铁研究总院 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| CN102191344A (en) * | 2010-03-10 | 2011-09-21 | 山东铁雄能源煤化有限公司 | Hot delivery and hot charging process of blast furnace iron making raw material and device thereof |
| EP2677043A1 (en) * | 2012-06-21 | 2013-12-25 | Siemens VAI Metals Technologies GmbH | Method and device for the manufacture of liquid pig iron and/or liquid steel inputs |
| CN106337114A (en) * | 2016-09-12 | 2017-01-18 | 鞍钢股份有限公司 | Method for using presintering super-thick material layer sintering ore |
-
1986
- 1986-04-21 JP JP9003186A patent/JPS62247035A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011063672A1 (en) * | 2009-11-24 | 2011-06-03 | 钢铁研究总院 | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| KR101324254B1 (en) * | 2009-11-24 | 2013-11-01 | 센트럴 아이언 앤 스틸 리서치 인스티튜트 | Method and apparatus for ironmaking using full-oxygen hydrogen-rich gas |
| AU2010324338B2 (en) * | 2009-11-24 | 2014-06-26 | Central Iron & Steel Research Institute | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| US8986601B2 (en) | 2009-11-24 | 2015-03-24 | Central Iron & Steel Research Institute | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| US9581387B2 (en) | 2009-11-24 | 2017-02-28 | Central Iron & Steel Research Institute | Method for iron-making with full oxygen and hydrogen-rich gas and equipment thereof |
| CN102191344A (en) * | 2010-03-10 | 2011-09-21 | 山东铁雄能源煤化有限公司 | Hot delivery and hot charging process of blast furnace iron making raw material and device thereof |
| EP2677043A1 (en) * | 2012-06-21 | 2013-12-25 | Siemens VAI Metals Technologies GmbH | Method and device for the manufacture of liquid pig iron and/or liquid steel inputs |
| CN106337114A (en) * | 2016-09-12 | 2017-01-18 | 鞍钢股份有限公司 | Method for using presintering super-thick material layer sintering ore |
| CN106337114B (en) * | 2016-09-12 | 2018-05-29 | 鞍钢股份有限公司 | Method for using presintering super-thick material layer sintering ore |
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