JP6403268B2 - 還元鉄の製造方法及び装置 - Google Patents
還元鉄の製造方法及び装置 Download PDFInfo
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- JP6403268B2 JP6403268B2 JP2015019066A JP2015019066A JP6403268B2 JP 6403268 B2 JP6403268 B2 JP 6403268B2 JP 2015019066 A JP2015019066 A JP 2015019066A JP 2015019066 A JP2015019066 A JP 2015019066A JP 6403268 B2 JP6403268 B2 JP 6403268B2
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- Prior art keywords
- reduced iron
- raw material
- inclined surface
- ceiling
- hearth
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces 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
- F27B9/16—Furnaces 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
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/08—Making spongy iron or liquid steel, by direct processes in rotary furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces 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
- F27B9/147—Furnaces 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 on an inclined floor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/14—Furnaces 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
- F27B9/20—Furnaces 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 substantially straight path tunnel furnace
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories, or equipment peculiar to furnaces of these types
- F27B9/38—Arrangements of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/0033—Charging; Discharging; Manipulation of charge charging of particulate material
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
- F27D3/10—Charging directly from hoppers or shoots
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Manufacture Of Iron (AREA)
- Furnace Charging Or Discharging (AREA)
- Vertical, Hearth, Or Arc Furnaces (AREA)
Description
(1)還元鉄原料
任意の断面の真円度:0.8以上(共通)
直径:15mm,18mm及び23mmの3種類(実施例)
直径:15mm及び23mmの2種類(比較例)
(2)床敷材
材質:無煙炭(共通)
粒径:3.35mm以下 100Wt%(共通)
層厚:15mm(共通)
(3)鉛直方向の落下距離
比較例の場合:900mm
実施例の場合:1400mm
(4)炉床移動速度
原料直径23mmの場合:7.6m/min(共通)
原料直径19mmの場合:9.2m/min(実施例のみ)
原料直径15mmの場合:11.6m/min(共通)
(5)傾斜面(実施例のみ)
傾斜角度:45°
材質:耐火物(天井と同じ)
長さ:1000mm
10 還元溶融炉
12 原料装入部
14 排出部
16 炉床
18 床敷材
24 天井
40 天井内に設けられた傾斜面
42 延長部材
44 原料供給部
48 延長傾斜面
Claims (9)
- 還元鉄を製造するための方法であって、
炭素質還元剤と酸化鉄とを含有する複数の球状の還元鉄原料を、特定方向に移動する炉床、前記炉床の上方に位置する天井、及び前記炉床上に敷設された粉体からなる床敷材、を有する還元溶融炉内に順次装入して前記床敷材上にセットする工程と、
前記炉床の移動に伴って当該床敷材上で前記各還元鉄原料を順次還元処理することにより還元鉄を生成し、前記還元溶融炉の外部に排出する工程と、を含み、
前記還元鉄原料を前記床敷材上にセットする工程は、前記還元鉄原料に前記炉床の移動方向と同じ方向の水平方向の速度であって当該炉床の移動速度よりも大きな水平方向の速度を与えながら当該還元鉄原料を前記天井の下面から下方に放出して前記床敷材上に落下させることによりその水平方向の速度の向きに当該床敷材上で当該還元鉄原料を転動させることを、含む、還元鉄の製造方法。 - 請求項1記載の還元鉄の製造方法であって、前記還元鉄原料を前記床敷材上にセットする工程では、前記床敷材上への前記還元鉄原料の入射角度を60°以下とする大きさの水平方向の速度を前記還元鉄原料に与える、還元鉄の製造方法。
- 請求項1または2記載の還元鉄の製造方法であって、前記水平方向の速度の付与は、前記天井の内部に前記炉床の移動方向に下って傾斜するとともに前記天井の下面またはそれよりも上側に位置する下端を有する傾斜面を設けてこの傾斜面上で前記還元鉄原料を転動させて当該傾斜面に沿って降下させてから当該傾斜面の下端から放出することにより、行われる、還元鉄の製造方法。
- 請求項3記載の還元鉄の製造方法であって、前記天井の上に前記天井の内部の傾斜面と連続する延長傾斜面をもった延長部材を設け、当該延長傾斜面及び前記天井の内部の傾斜面に順次沿わせて還元鉄原料を降下させてから当該還元鉄原料を放出する、還元鉄の製造方法。
- 炭素質還元剤と酸化鉄とを含有する複数の球状の還元鉄原料を加熱処理して還元鉄を製造するための装置であって、
特定方向に移動可能な炉床、前記炉床の上方に位置する天井、及び、前記炉床上に敷設された粉体からなる床敷材を有し、この床敷材上にセットされた還元鉄原料を前記炉床の移動に伴って順次加熱処理することにより還元鉄を生成する還元溶融炉と、
この還元溶融炉内に前記複数の還元鉄原料を順次装入して前記床敷材上にセットする原料装入部と、
前記還元溶融炉内で生成された還元鉄を排出する排出部と、を備え、
前記原料装入部は、前記還元鉄原料に前記炉床の移動方向と同じ方向の水平方向の速度であって当該炉床の移動速度よりも大きな水平方向の速度を与えながら当該還元鉄原料を前記天井の下面から下方に放出して前記床敷材上に落下させることによりその水平方向の速度の向きに当該床敷材上で当該還元鉄原料を転動させる、還元鉄の製造装置。 - 請求項5記載の還元鉄の製造装置であって、前記原料装入部は、前記天井の内部に設けられ、前記炉床の移動方向に下って傾斜するとともに、天井の下面またはそれよりも上側に位置する下端を有する傾斜面と、この傾斜面に前記複数の還元鉄原料を順次供給して当該還元鉄原料を当該傾斜面に沿って降下させ、当該傾斜面の下端から放出させる原料供給部と、を含む、還元鉄の製造装置。
- 請求項6記載の還元鉄の製造装置であって、前記原料装入部は、前記天井の内部に設けられる傾斜面に加えて天井の上側に延長された傾斜面をさらに含む、還元鉄の製造装置。
- 請求項7記載の還元鉄の製造装置であって、前記天井の上に設けられ、前記天井の内部の傾斜面と連続する延長傾斜面を有する延長部材をさらに含み、前記原料供給部は当該延長傾斜面に前記還元鉄原料を供給して当該還元鉄原料を前記延長傾斜面及び前記天井の内部の傾斜面に順次沿わせて降下させる、還元鉄の製造装置。
- 請求項6〜8のいずれかに記載の還元鉄の製造装置であって、前記傾斜面の角度は、36°以上60°以下である、還元鉄の製造装置。
Priority Applications (6)
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JP2015019066A JP6403268B2 (ja) | 2015-02-03 | 2015-02-03 | 還元鉄の製造方法及び装置 |
UAA201708757A UA118241C2 (uk) | 2015-02-03 | 2016-01-21 | Спосіб і пристрій для одержання відновленого заліза |
PCT/JP2016/051756 WO2016125598A1 (ja) | 2015-02-03 | 2016-01-21 | 還元鉄の製造方法及び装置 |
US15/547,864 US10571193B2 (en) | 2015-02-03 | 2016-01-21 | Reduced iron production method and device |
RU2017130286A RU2669493C1 (ru) | 2015-02-03 | 2016-01-21 | Способ и устройство для получения восстановленного железа |
CN201680007878.5A CN107208168B (zh) | 2015-02-03 | 2016-01-21 | 还原铁的制造方法及装置 |
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US (1) | US10571193B2 (ja) |
JP (1) | JP6403268B2 (ja) |
CN (1) | CN107208168B (ja) |
RU (1) | RU2669493C1 (ja) |
UA (1) | UA118241C2 (ja) |
WO (1) | WO2016125598A1 (ja) |
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JP6623118B2 (ja) * | 2016-05-20 | 2019-12-18 | 株式会社神戸製鋼所 | 還元鉄の製造方法 |
JP6818710B2 (ja) * | 2018-03-19 | 2021-01-20 | 株式会社東芝 | 定電圧回路 |
CN110108122A (zh) * | 2019-05-24 | 2019-08-09 | 重庆赛迪热工环保工程技术有限公司 | 一种适用于垃圾衍生燃料的转底炉及其布料工艺 |
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JPS537505A (en) * | 1976-07-09 | 1978-01-24 | Nippon Steel Corp | Operating process of blast furnace |
IT1304366B1 (it) * | 1998-04-29 | 2001-03-15 | Demag Italimpianti S P A Ora S | Dispositivo alimentatore distributore per piattaforme rotanti, inparticolare per forni a suola rotante. |
TW461920B (en) * | 1998-09-25 | 2001-11-01 | Mitsubishi Heavy Ind Ltd | Method of producing reduced iron and production facilities therefor |
JP2000109914A (ja) * | 1998-10-06 | 2000-04-18 | Daido Steel Co Ltd | 回転炉床炉 |
JP4110664B2 (ja) * | 1999-04-26 | 2008-07-02 | 大同特殊鋼株式会社 | 回転炉床形炉の材料投入装置 |
JP4307686B2 (ja) * | 2000-04-18 | 2009-08-05 | 株式会社神戸製鋼所 | 原料供給装置および還元鉄製造方法 |
JP4267843B2 (ja) * | 2001-08-31 | 2009-05-27 | 株式会社神戸製鋼所 | 金属鉄の製法 |
US20040119210A1 (en) * | 2002-12-18 | 2004-06-24 | Kabushiki Kaisha Kobe Seiko Sho(Kobe Steel, Ltd.) | Sealing mechanism of feeding device |
TWI282818B (en) * | 2003-01-16 | 2007-06-21 | Kobe Steel Ltd | A rotary hearth furnace and iron production method thereby |
JP5342098B2 (ja) * | 2005-11-29 | 2013-11-13 | 株式会社神戸製鋼所 | 回転炉床炉による酸化鉄の還元処理方法 |
CN201321481Y (zh) * | 2008-12-22 | 2009-10-07 | 莱芜钢铁集团有限公司 | 一种新型球团冷却装置 |
CN101706202B (zh) * | 2009-11-24 | 2011-06-15 | 马鞍山钢铁股份有限公司 | 用于转底炉的球团布料装置及其布料方法 |
JP5483589B2 (ja) | 2010-09-01 | 2014-05-07 | 株式会社神戸製鋼所 | 還元鉄原料供給システム |
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- 2016-01-21 RU RU2017130286A patent/RU2669493C1/ru active
- 2016-01-21 US US15/547,864 patent/US10571193B2/en active Active
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Publication number | Publication date |
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CN107208168B (zh) | 2019-05-21 |
JP2016141849A (ja) | 2016-08-08 |
WO2016125598A1 (ja) | 2016-08-11 |
UA118241C2 (uk) | 2018-12-10 |
US20180017326A1 (en) | 2018-01-18 |
RU2669493C1 (ru) | 2018-10-11 |
CN107208168A (zh) | 2017-09-26 |
US10571193B2 (en) | 2020-02-25 |
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