BR112023019680A2 - Método operacional para forno de redução - Google Patents
Método operacional para forno de reduçãoInfo
- Publication number
- BR112023019680A2 BR112023019680A2 BR112023019680A BR112023019680A BR112023019680A2 BR 112023019680 A2 BR112023019680 A2 BR 112023019680A2 BR 112023019680 A BR112023019680 A BR 112023019680A BR 112023019680 A BR112023019680 A BR 112023019680A BR 112023019680 A2 BR112023019680 A2 BR 112023019680A2
- Authority
- BR
- Brazil
- Prior art keywords
- reduction furnace
- granularity
- reduced iron
- raw material
- range
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 4
- 239000002994 raw material Substances 0.000 abstract 4
- 238000007796 conventional method Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 238000011017 operating method Methods 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0086—Conditioning, transformation of reduced iron ores
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0073—Selection or treatment of the reducing gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/02—Making spongy iron or liquid steel, by direct processes in shaft 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
- C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
- C21B13/146—Multi-step reduction without melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2100/00—Handling of exhaust gases produced during the manufacture of iron or steel
- C21B2100/40—Gas purification of exhaust gases to be recirculated or used in other metallurgical processes
- C21B2100/44—Removing particles, e.g. by scrubbing, dedusting
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Gasification And Melting Of Waste (AREA)
Abstract
método operacional para forno de redução. é proposto um método operacional para um forno de redução que pode reduzir óxido de ferro incluído em uma matéria-prima de forma mais eficiente do que métodos convencionais. este método de operação para um forno de redução, compreendendo carregar uma matéria-prima que inclui óxido de ferro no forno de redução, introduzir, no forno de redução, um gás redutor associado com uma reação endotérmica no momento da redução, e reduzir o óxido de ferro para obter ferro reduzido, em que o método é caracterizado pelo fato de que: a matéria-prima compreende um primeiro produto graúdo que possui granularidade em uma primeira faixa de granularidade e um segundo produto graúdo que possui granularidade em uma segunda faixa de granularidade, cujo valor limite inferior é igual a ou maior que o valor limite superior superior da primeira faixa de granularidade; a matéria-prima é préaquecida antes de ser carregada no forno de redução ou é aquecida dentro do forno de redução; ferro reduzido descarregado do forno de redução é peneirado em ferro reduzido com granularidade em uma faixa de granularidade mais fina e ferro reduzido com granularidade em uma faixa de granularidade mais grossa; e o ferro reduzido na faixa de granularidade mais fina é coletado.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2021062160A JP7040659B1 (ja) | 2021-03-31 | 2021-03-31 | 還元炉の操業方法 |
| PCT/JP2021/044585 WO2022209015A1 (ja) | 2021-03-31 | 2021-12-03 | 還元炉の操業方法 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BR112023019680A2 true BR112023019680A2 (pt) | 2023-10-31 |
Family
ID=81214340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BR112023019680A BR112023019680A2 (pt) | 2021-03-31 | 2021-12-03 | Método operacional para forno de redução |
Country Status (7)
| Country | Link |
|---|---|
| EP (1) | EP4317465A1 (pt) |
| JP (1) | JP7040659B1 (pt) |
| KR (1) | KR20230159536A (pt) |
| CN (1) | CN117083395A (pt) |
| BR (1) | BR112023019680A2 (pt) |
| TW (1) | TWI802162B (pt) |
| WO (1) | WO2022209015A1 (pt) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU741669B2 (en) * | 1997-08-04 | 2001-12-06 | Bechtel Corporation | Method for direct reduction and upgrading of fine-grained refractory and earthy iron ores and slags |
| US6224649B1 (en) * | 1998-07-06 | 2001-05-01 | Hylsa, S.A. De C.V. | Method and apparatus for reducing iron-oxides-particles having a broad range of sizes |
| CN1399688A (zh) * | 1999-09-06 | 2003-02-26 | 日本钢管株式会社 | 金属冶炼方法和金属冶炼设备 |
| JP5594013B2 (ja) * | 2010-09-21 | 2014-09-24 | Ｊｆｅスチール株式会社 | 還元鉄製造方法 |
| JP5630222B2 (ja) | 2010-11-10 | 2014-11-26 | 新日鐵住金株式会社 | 予熱原料を使用した直接還元炉の操業方法 |
| JP2014037575A (ja) * | 2012-08-15 | 2014-02-27 | Nippon Steel & Sumitomo Metal | 還元鉄の製造方法 |
| CN107299175A (zh) * | 2017-07-24 | 2017-10-27 | 江苏省冶金设计院有限公司 | 一种流化床制气、气基还原和电炉炼钢耦合的系统和方法 |
| CN111979371B (zh) * | 2020-07-31 | 2022-05-24 | 太原理工大成工程有限公司 | 一种干熄焦耦合竖炉生产直接还原铁的工艺中热量分布式利用的方法 |
| CN113699370A (zh) * | 2021-07-21 | 2021-11-26 | 酒泉钢铁(集团)有限责任公司 | 一种铁精矿回转窑煤基氢冶金-热造块-电炉生产半钢工艺 |
-
2021
- 2021-03-31 JP JP2021062160A patent/JP7040659B1/ja active Active
- 2021-12-03 WO PCT/JP2021/044585 patent/WO2022209015A1/ja active Application Filing
- 2021-12-03 CN CN202180096333.7A patent/CN117083395A/zh active Pending
- 2021-12-03 BR BR112023019680A patent/BR112023019680A2/pt unknown
- 2021-12-03 KR KR1020237035851A patent/KR20230159536A/ko unknown
- 2021-12-03 EP EP21935168.1A patent/EP4317465A1/en active Pending
- 2021-12-22 TW TW110148076A patent/TWI802162B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| TW202239974A (zh) | 2022-10-16 |
| CN117083395A (zh) | 2023-11-17 |
| EP4317465A1 (en) | 2024-02-07 |
| WO2022209015A1 (ja) | 2022-10-06 |
| JP7040659B1 (ja) | 2022-03-23 |
| KR20230159536A (ko) | 2023-11-21 |
| TWI802162B (zh) | 2023-05-11 |
| JP2022157749A (ja) | 2022-10-14 |
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