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1. 发明申请

WO1998028449A1 3-STAGE FLUIDIZED BED TYPE FINE IRON ORE REDUCING APPARATUS HAVING X-SHAPED CIRCULATING TUBES 审中-公开
标题翻译：三级流化床类型精细铁矿石减少装置X型圆形管
公开(公告)号：WO1998028449A1
公开(公告)日：1998-07-02
申请号：PCT/KR1997000275
申请日：1997-12-22
申请人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH , JUNG, Uoo, Chang , CHOI, Nag, Joon , KANG, Heung, Won , KIM, Hang, Goo
发明人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH
IPC分类号： C21B13/14
CPC分类号： C21B13/002 , C21B13/14 , C21B2100/44 , C21B2100/66 , Y02P10/136 , Y02P10/216
摘要： Disclosed is a 3-stage fluidized bed type iron ore reducing apparatus with X-shaped circulating tubes for improvement of gas utilization rate and reducing rate and decreasing of gas consumption rate. The apparatus comprises a first (10) and a second (20) fluidized bed furnace for drying and preheating raw fine ore, a first (60) and a second (70) cyclone for collection of the fines of the exhaust gases of said fluidized bed furnaces (10, 20) and recirculate them, a twin type third fluidized bed furnace (340) consisting of a first (30) and a second (40) reaction furnace for separating the ore in a coarse and a fine ore fraction so that these fractions are finally reduced in separate reactors and a third cyclone (80) for separation of the fine ore from the exhaust gas of said second reactor (40) of said third furnace (340) and recirculate it to the first reactor (30) of said third furnace (340).
摘要翻译：公开了一种具有X形循环管的三级流化床式铁矿石还原装置，用于提高气体利用率和降低率，降低气体消耗率。该设备包括用于干燥和预热原始细矿石的第一（10）和第二（20）流化床炉，第一（60）和第二（70）旋风分离器，用于收集所述流化床的废气的细粉炉子（10,20）并再循环它们，由第一（30）和第二（40）反应炉组成的双型第三流化床炉（340），用于分离粗矿和细矿石部分中的矿石，使得这些最后在分离的反应器和第三旋风器（80）中还原级分，用于将细矿石与所述第三炉（340）的所述第二反应器（40）的废气分离并将其再循环到所述第三炉（340）的第一反应器（30）第三炉（340）。

2. 发明申请

WO1996021045A1 FLUIDIZED BED TYPE REDUCTION APPARATUS FOR IRON ORE PARTICLES AND METHOD FOR REDUCING IRON ORE PARTICLES USING THE APPARATUS 审中-公开
标题翻译：用于铁矿石颗粒的流化床减少装置和使用装置减少铁矿石颗粒的方法
公开(公告)号：WO1996021045A1
公开(公告)日：1996-07-11
申请号：PCT/KR1995000182
申请日：1995-12-28
申请人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH , LEE, Il, Ock , KIM, Yong, Ha , JUNG, Bong, Jin , KIM, Hang, Goo , HAUZENBERGER, Franz
发明人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH
IPC分类号： C21B13/14
CPC分类号： C21B13/002 , C21B13/0033 , C21B13/14 , C21B2100/44 , Y02P10/136 , Y02P10/216
摘要： A reduction apparatus and a method for efficient reduction of fine iron ores of wide grain range comprising serially arranged a drying/preheating furnace, a first reducing furnace for prereduction and a second reduction furnace for final reduction, each working with bubbling fluidized bed and being connected each to a cyclon for capturing iron ore dust contained in the exhaust gases, having each a tapered shape smoothly expanded outwards and thus considerably decreasing elutriation of fine particles, increasing the reduction efficiency and enhancing the utilization of the reducing gas.
摘要翻译：一种用于有效还原宽晶粒范围的细铁矿石的还原装置和方法，包括串联设置的干燥/预热炉，用于预还原的第一还原炉和用于最终还原的第二还原炉，每个用于鼓泡流化床并连接分别用于捕获废气中含有的铁矿粉的旋风分离器，其各自的锥形形状向外平滑地膨胀，从而显着地减少细颗粒的淘析，提高还原效率并增强还原气体的利用。

3. 发明申请

WO2008018774A1 APPARATUS FOR MANUFACTURING MOLTEN IRONS AND METHOD FOR MANUFACTURING MOLTEN IRONS USING THE SAME 审中-公开
标题翻译：用于制造轧制钢的装置和使用其制造轧制铁的方法
公开(公告)号：WO2008018774A1
公开(公告)日：2008-02-14
申请号：PCT/KR2007/003852
申请日：2007-08-10
申请人： POSCO , HUR, Nam-Suk , LEE, Hoo-Geun , KIM, Hak-Dong , BAE, Jin-Chan , KIM, Hang-Goo , SHIN, Myoung-Kyun
发明人： HUR, Nam-Suk , LEE, Hoo-Geun , KIM, Hak-Dong , BAE, Jin-Chan , KIM, Hang-Goo , SHIN, Myoung-Kyun
IPC分类号： C21B13/00
CPC分类号： C21B13/143 , C21B13/0013 , C21B13/002 , C21B13/0086 , C21B2100/282 , C21B2100/64 , F27B1/20 , Y02P10/136
摘要： The present invention relates to an apparatus for manufacturing molten irons and a method for manufacturing molten iron using the same. The method for manufacturing molten irons according to the present invention includes reducing first iron ores by charging the first iron ores into a fluidized-bed reduction reactor; manufacturing compacted irons by compacting the reduced first iron ores; reducing second iron ores together with the compacted irons by charging the second iron ores and the compacted irons into a packed-bed reduction reactor, a size of the second iron ores is greater than a size of the first iron ores; charging the reduced compacted irons and the second iron ores into a melter-gasifier connected to the packed-bed reduction reactor; preparing lumped carbonaceous materials as a heating source for melting the reduced compacted irons and the second iron ores; charging the lumped carbonaceous materials into the melter- gasifier and then forming a coal packed-bed; and injecting oxygen through a tuyere installed in the melter-gasifier and then manufacturing molten iron from the compacted irons and the second iron ores.
摘要翻译：本发明涉及一种用于制造铁水的设备以及使用该设备的铁水的制造方法。根据本发明的制造铁水的方法包括通过将第一铁矿石装入流化床还原反应器中来还原第一铁矿石; 通过压实减少的第一铁矿石来制造压实的熨斗; 通过将第二铁矿石和压实的熨斗装入填充床还原反应器中，将第二铁矿石与压实的熨斗一起减少，第二铁矿石的尺寸大于第一铁矿石的尺寸; 将还原的压实铁和第二铁矿石装入连接到填充床还原反应器的熔炉 - 气化器中; 制备集中的碳质材料作为用于熔化还原压实铁和第二铁矿石的加热源; 将集中的碳质材料装入熔炉 - 气化器中，然后形成煤填充床; 并且通过安装在熔炉 - 气化器中的风口喷射氧气，然后从压实的熨斗和第二铁矿石制造铁水。

4. 发明申请

WO1998029574A1 FLUIDIZED BED TYPE REDUCING SYSTEM FOR REDUCING FINE IRON ORE 审中-公开
标题翻译：用于减少铁矿石的流化床减少系统
公开(公告)号：WO1998029574A1
公开(公告)日：1998-07-09
申请号：PCT/KR1996000259
申请日：1996-12-28
申请人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH , KIM, Yong, Ha , LEE, Il, Ock , KIM, Hang, Goo
发明人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH
IPC分类号： C21B13/00
CPC分类号： C21B13/0033 , Y02P10/136 , Y02P10/216
摘要： A fluidized bed type reducing system (20) for reducing fine iron ore consisting of a lower upper-wide-narrow-lower shape tapered portion (212) and an upper cylindrical portion (211). The extremely fine iron ore discharged together with the reducing gas is recycled by a duct (115) connected to the upper part of the cylindrical portion (211), a capturing device (12) for separation of the extremely fine iron ore from the reducing gas and further duct (121) for refeeding the separated extremely fine iron ore to the system (20). The upper iron ore outlet (113) for discharging fine iron ore particles, the iron ore inlet (112) for charging iron ore with wide particle size distribution and the lower iron ore outlet (114) for discharging coarse iron ore particles are connected to the tapered portion (212) of the system. The extremely fine iron ore supplying tube (121) is installed on another side of the said tapered portion (212).
摘要翻译：一种用于还原细小铁矿石的流化床型还原系统（20），其由下部上宽 - 窄 - 窄 - 下 - 窄形状的锥形部分（212）和上部圆柱形部分（211）组成。与还原气体一起排出的极细铁矿石通过连接到圆筒部分211的上部的管道（115）再循环，用于将极细铁矿石与还原气体分离的捕集装置（12）以及用于将分离的极细铁矿石再供给到系统（20）的另外的管道（121）。用于排出细铁矿石颗粒的上铁矿石出口（113），用于装载宽粒度分布的铁矿石的铁矿石入口（112）和用于排出粗铁矿石颗粒的下铁矿石出口（114）连接到锥形部分（212）。极细的铁矿石供给管（121）安装在所述锥形部分（212）的另一侧。

5. 发明申请

WO0146478A3 A FLUIDIZED BED REACTOR FOR PREVENTING THE FINE IRON ORE FROM STICKING THEREIN AND METHOD THEREFOR 审中-公开
标题翻译：一种流化床反应器，用于防止金属丝从其制造及其方法
公开(公告)号：WO0146478A3
公开(公告)日：2001-11-29
申请号：PCT/KR0001495
申请日：2000-12-20
申请人： PO HANG IRON & STEEL , RES INST OF IND SCIENCE & TECN , VOEST ALPINE IND ANLAGEN , CHOI NAG JOON , JEONG SUN KWANG , KIM HANG GOO , KANG HEUNG WON , HAUZENBERGER FRANZ
发明人： CHOI NAG-JOON , JEONG SUN-KWANG , KIM HANG-GOO , KANG HEUNG-WON , HAUZENBERGER FRANZ
IPC分类号： C21B13/00 , C21B13/14 , C22B5/14 , F27B15/02 , F27B15/08 , F27B15/09 , F27B15/10 , F27B15/12 , F27B15/18 , F27D17/00
CPC分类号： C21B13/002 , C21B13/0033 , C21B13/14 , C21B2100/44 , C22B5/14 , Y02P10/136 , Y02P10/216
摘要： A smelting reduction apparatus which separates exhaust gas, which is exhausted from a melter-gasifier (40) or a fluidized bed reactor (10, 20, 30), into dusts and reducing gas to supply them to each fluidized bed reactor (10, 20, 30) respectively is disclosed, in which the smelting reduction apparatus includes a three-stage type fluidized bed reactor, a melter-gasifier (40) for manufacturing molten pig iron and a dust separating device (45, 50, 60), which performs separation of exhausted gas from the melter-gasifier (40) into dusts and reducing gas, so as to supply the separated reducing gas to a lower part of the final fluidized bed reactor (30), dusts having a larger particle size back to the melter-gasifier (40) again and fine dusts having a smaller particle size to an upper part of the gas distributor of the final fluidized bed reactor (30).
摘要翻译：一种熔化还原装置，其将从熔炉 - 气化器（40）或流化床反应器（10,20,30）排出的废气分离成灰尘和还原气体，以将其供应到每个流化床反应器（10,20），30），其中熔融还原装置包括三级流化床反应器，用于制造熔炼生铁的熔炉 - 气化器（40）和灰尘分离装置（45,50,60），其执行将排气从熔炉 - 气化器（40）分离成灰尘和还原气体，以便将分离的还原气体供应到最终流化床反应器（30）的下部，具有较大颗粒尺寸的灰尘返回到熔化器再次将最终流化床反应器（30）的气体分配器的上部部分的颗粒尺寸较小的细粉尘。

6. 发明申请

WO2007079939A8 DISTRIBUTOR BOTTOM 审中-公开
标题翻译：分销商GROUND
公开(公告)号：WO2007079939A8
公开(公告)日：2008-07-31
申请号：PCT/EP2006012292
申请日：2006-12-20
申请人： SIEMENS VAI METALS TECH GMBH , POSCO , HAUZENBERGER FRANZ , ZEHETBAUER KARL , LEE JUN HYUK , SHIN MYOUNG KYUN , NAMKUNG WON , CHO MINYOUNG , JEONG SUN-KWANG , CHOI NAG JOON , KIM HANG GOO
发明人： HAUZENBERGER FRANZ , ZEHETBAUER KARL , LEE JUN HYUK , SHIN MYOUNG KYUN , NAMKUNG WON , CHO MINYOUNG , JEONG SUN-KWANG , CHOI NAG JOON , KIM HANG GOO
IPC分类号： B01J8/44
CPC分类号： B01J8/44 , B01J2219/00247 , C21B13/0033 , F27B15/10
摘要： The invention relates to a distributor bottom (1), particularly a nozzle-type distributor bottom, for steadily introducing process gas, especially process gas loaded with solid particles, into a process chamber (3), optionally to create a fluidized bed, said process chamber (3) being disposed above the distributor bottom and being formed by walls (4) of a reactor used for metallurgically, particularly thermally, treating feedstock. The inventive distributor bottom is provided with a plurality of holes. Holes are arranged near the walls to prevent substances from attaching to the reactor walls. Special arrangements relate to nozzles and ducts.
摘要翻译：本发明涉及一种歧管基座（1），尤其是喷嘴分配器基础上，为均匀的引入，特别是与固体颗粒充满气体，处理气体，任选地形成一个流化床，在一个设置在分布器板处理室（3）的上方，由一个反应器的反应器壁（4）形成到冶金，特别是热的，处理原料，所述具有多个开口的分配器板。通过在分配器底座沉积物开口的近壁布置，可避免反应器壁上。特别安排涉及喷嘴和导管。

7. 发明申请

WO2008078938A1 APPARATUS FOR MANUFACTURING MOLTEN IRON AND METHOD FOR MANUFACTURING MOLTEN IRON 审中-公开
标题翻译：制造铁丝的装置及其制造方法
公开(公告)号：WO2008078938A1
公开(公告)日：2008-07-03
申请号：PCT/KR2007/006775
申请日：2007-12-24
申请人： POSCO , LEE, Jun-Hyuk , KIM, Hang-Goo , SHIN, Myoung-Kyun , CHO, Min-Young
发明人： LEE, Jun-Hyuk , KIM, Hang-Goo , SHIN, Myoung-Kyun , CHO, Min-Young
IPC分类号： C21B13/06
CPC分类号： C21B13/14 , C21B13/002 , C21B13/0033 , C21B13/0073 , C21B13/0086 , C21B13/02 , C21B2100/44 , C21B2100/60 , C21B2100/66 , C21B2300/02
摘要： An apparatus for manufacturing molten iron according to an embodiment of the present invention includes i) at least one fluidized-bed reduction reactor that reduces and plasticizes fine iron; ii) an apparatus for manufacturing compacted iron that molds the fine iron and manufactures compacted iron; iii) a melter-gasifier into which the compacted iron is charged and oxygen is injected; iv) a reducing gas supply line that supplies reducing gas discharged from the melter-gasifier to the fluidized-bed reduction reactor; and v) a fine particle injecting device that injects viscosity reducing materials into the reducing gas such that viscosity of dust contained in the reducing gas is reduced. The melter-gasifier manufactures molten iron.
摘要翻译：根据本发明的实施方案的用于制造铁水的设备包括：i）至少一种减少和增塑细铁的流化床还原反应器; ii）一种用于制造压制铁的装置，其将细铁制成并制造压实的铁; iii）熔化器 - 气化器，其中压实的铁被加入并注入氧气; iv）还原气体供应管线，其将从熔炉 - 气化器排出的还原气体供应到流化床还原反应器; 和v）将减粘材料注入到还原气体中以使还原气体中所含的粉尘的粘度降低的细粒子注入装置。熔炉 - 气化炉生产铁水。

8. 发明申请

WO2008078891A1 APPARATUS AND METHOD FOR MANUFACTURING MOLTEN IRON 审中-公开
标题翻译：装置及其制造方法
公开(公告)号：WO2008078891A1
公开(公告)日：2008-07-03
申请号：PCT/KR2007/006546
申请日：2007-12-14
申请人： POSCO , CHO, Min-Young , SHIN, Myoung-Kyun , KIM, Hang-Goo , LEE, Hoo-Geun , JOO, Sang-Hoon
发明人： CHO, Min-Young , SHIN, Myoung-Kyun , KIM, Hang-Goo , LEE, Hoo-Geun , JOO, Sang-Hoon
IPC分类号： C21B13/06 , C21B13/00
CPC分类号： C21B13/0033 , C21B13/002 , C21B13/0086 , C21B13/02 , C21B13/14 , C21B2100/22 , C21B2100/26 , C21B2100/282 , C21B2100/60 , C21B2100/66 , C21B2300/02 , Y02P10/216
摘要： The present invention relates to an apparatus and method for manufacturing molten iron while reusing an offgas of the packed bed reduction reactor and improving energy efficiency. A method for manufacturing molten iron includes i) charging fine ore into at least one fluidized-bed reduction reactor and manufacturing reduced iron; ii) compacting the reduced iron and manufacturing compacted reduced iron; iii) charging the reduced iron into a packed bed reduction reactor and reducing the reduced iron again; iv) charging the re-reduced iron into a melter-gasifier; v) charging lumped carbonaceous materials into the melter- gasifier and forming a coal packed bed in the melter-gasifier; vi) injecting oxygen into the melter-gasifier and combusting the coal packed bed, thereby melting the re-reduced iron and manufacturing molten iron; and vii) supplying an offgas that is discharged from the packed bed reduction reactor to the fluidized-bed reduction reactor.
摘要翻译：本发明涉及一种在重新利用填充床还原反应器的废气并提高能量效率的同时制造铁水的装置和方法。一种制造铁水的方法包括：i）将细矿石装入至少一个流化床还原反应器并制造还原铁; ii）压实还原铁，并制造压实的还原铁; iii）将还原铁装入填充床还原反应器中并再次还原还原铁; iv）将再还原的铁装入熔炉 - 气化器中; v）将熔融碳质材料装入熔炉 - 气化炉中并在熔炉 - 气化器中形成煤填充床; vi）将氧气注入熔炉 - 气化器中并燃烧煤填充床，从而熔化再还原的铁并制造铁水; 和vii）将从填充床还原反应器排出的废气供应到流化床还原反应器。

9. 发明申请

WO2007075022A1 APPARATUS FOR MANUFACTURING MOLTEN IRONS 审中-公开
标题翻译：用于制造钢铁的装置
公开(公告)号：WO2007075022A1
公开(公告)日：2007-07-05
申请号：PCT/KR2006/005699
申请日：2006-12-26
申请人： POSCO , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH & CO , CHO, Min-Young , KIM, Hang-Goo , SHIN, Myoung-Kyun , CHOI, Nag-Joon , NAM, Kung-Won , JEONG, Sun-Kwang , LEE, Jun-Hyuk
发明人： CHO, Min-Young , KIM, Hang-Goo , SHIN, Myoung-Kyun , CHOI, Nag-Joon , NAM, Kung-Won , JEONG, Sun-Kwang , LEE, Jun-Hyuk
IPC分类号： C21B13/00
CPC分类号： C21B13/0033 , B01J8/0055 , B01J8/1818 , B01J8/1827 , B01J8/24 , B01J8/26 , B01J8/28 , B01J8/44 , B01J2208/00017 , B01J2208/00557 , B01J2219/0004 , C21B13/002 , C21B13/143 , F27B15/08 , F27B15/10
摘要： An apparatus for manufacturing molten iron according to an exemplary embodiment of the present invention includes i) at least one fluidized-bed reduction reactor that converts iron ore into reduced materials by reducing and plasticizing the iron ore, ii) a melter-gasifier into which the reduced materials are charged and oxygen is injected such that the melter-gasifier manufactures molten iron, and iii) a reducing gas supply line that supplies a reducing gas discharged from the melter- gasifier into the fluidized-bed reduction reactor. The fluidized-bed reduction reactor includes a gas injector that injects a gas into the fluidized-bed reduction reactor to remove stagnating layers.
摘要翻译：根据本发明的示例性实施例的用于制造铁水的设备包括：i）至少一个流化床还原反应器，其通过减少和塑化铁矿石将铁矿石转化为还原材料，ii）熔化炉 - 气化器，其中减少的材料被充电并且注入氧气，使得熔融 - 气化器制造铁水，和iii）还原气体供应管线，其将从熔融气化器排出的还原气体供应到流化床还原反应器中。流化床还原反应器包括将气体注入流化床还原反应器以除去滞留层的气体注入器。

10. 发明申请

WO1997024463A1 DEVICE OF THREE-STAGE FLUIDIZED BED FURNACE TYPE FOR REDUCING FINE IRON ORE 审中-公开
标题翻译：三级流化床炉用于减少铁矿石的装置
公开(公告)号：WO1997024463A1
公开(公告)日：1997-07-10
申请号：PCT/KR1996000261
申请日：1996-12-28
申请人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH , KIM, Hang, Goo , LEE, Il, Ock , CHUNG, Uoo, Chang , KIM, Yong, Ha
发明人： POHANG IRON & STEEL CO., LTD. , RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY , VOEST-ALPINE INDUSTRIEANLAGENBAU GMBH
IPC分类号： C21B13/14
CPC分类号： C21B13/14 , C21B13/0033 , Y02P10/136
摘要： A device (1) for three-stage fluidized bed for reducing a fine iron ore in accordance with the present invention comprises: a first single-type fluidized bed furnance (10) for drying/pre-heating a fine iron ore in a bubbling fluidized state; a first cyclone for collecting fine iron ore particles entrained in an exhaust gas from the first fluidized bed furnace (10); a second single-type fluidized bed furnace (20) for pre-reducing the fine iron ore dried/pre-heated in the first fluidized bed furnace; a second cyclone (60) for collecting fine iron ore particles entrained in an exhaust gas from the second fluidized bed furnace (20); a third twin-type fluidized bed furnace (340) comprising a first cylindrical reaction furnace (30) and a second reaction furnace (40) for finally reducing coarse iron ore particles and medium/fine iron ore particles, respectively, which are pre-reduced in the second fluidized bed furnace (20); a third cyclone (70) for collecting medium/fine iron ore particles entrained in an exhaust gas from the first reaction furnace (30) of the third fluidized bed furnace (340); and a fourth cyclone (80) for collecting ultrafine iron ore particles entrained in an exhaust gas from the second furnace (40) of the third fluidized bed furnace (340).
摘要翻译：根据本发明的用于还原精细铁矿石的三级流化床的装置（1）包括：用于在鼓泡流化床中干燥/预热细铁矿石的第一单式流化床炉（10）州; 用于收集夹带在来自第一流化床炉（10）的废气中的细铁矿石颗粒的第一旋风分离器; 用于预还原在第一流化床炉中干燥/预热的细铁矿石的第二单式流化床炉（20）; 用于收集夹带在来自第二流化床炉（20）的废气中的细铁矿石颗粒的第二旋风分离器（60）。第三双流化床炉（340），其包括分别最终还原预先还原的粗铁矿石颗粒和中/细铁矿石颗粒的第一圆柱形反应炉（30）和第二反应炉（40）在第二流化床炉（20）中; 用于收集夹带在来自第三流化床炉（340）的第一反应炉（30）的废气中的中/细铁矿石颗粒的第三旋风分离器（70）。和用于收集来自第三流化床炉（340）的第二炉（40）的排气中的超细铁矿石颗粒的第四旋风分离器（80）。

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