SU262127A1 - Method of producing carbon-free spongy iron - Google Patents
Method of producing carbon-free spongy ironInfo
- Publication number
- SU262127A1 SU262127A1 SU6601118964A SU1118964A SU262127A1 SU 262127 A1 SU262127 A1 SU 262127A1 SU 6601118964 A SU6601118964 A SU 6601118964A SU 1118964 A SU1118964 A SU 1118964A SU 262127 A1 SU262127 A1 SU 262127A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- free
- reduction
- hydrogen
- carbon
- iron
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title description 18
- 229910052742 iron Inorganic materials 0.000 title description 9
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 239000007789 gas Substances 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 5
- 238000001465 metallisation Methods 0.000 claims description 3
- 238000003763 carbonization Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000003647 oxidation Effects 0.000 claims description 2
- 238000007254 oxidation reaction Methods 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 150000002431 hydrogen Chemical class 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000005255 carburizing Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
Известным способом Цугами-Тайсуке безугперодистое губчатое железо получают восстановлением руды водородом. Однако конечный продукт, получаемый этим способом , имеет высокую стоимость вследствие использовани дорогого восстановигеп - водорода . Предлагаемый способ отличаетс тем, что предварительно нагретый окислительными газами железорудный материал обрабатывают нагретым углеродсодержащим вос становительным газом до степени металлизации 60-80% с последующим довосстановлением водородом. Это обеспечивает сокращение общего времени обработки и снижени себестоимости продукта, При этом полученное безуглеродистое губчатое железо охлаж дают водородом, что исключает вторичное окисление и науглероживание. Получение безуглеродистого губчатого железа производитс в реторте, где железорудный материал (руца, окагыши, концентрат и т,д,) нагревают окислите.чьными газа ми, например продуктами горени топлива, до 900-1ООО°С . Восстановление преп;варительно нагретого железорудного материала производ т в аве стадии. На первой стадии восстановление ведут нагретым конвертированным природным газом или другим восстановительным газом, обладающим углеродным потенциалом (синтез-газ, энцогаз и т.п.), до степени металлизации 6О-80%, На второй стадии окончательное восстановление производ т холодным или нагретым водородом, TeNmepaTypa восстановлени составл ет 900-1000°С и не превышает температуры разм гчени железорудного материала, Дл предохранени полученного безуглеродистого губчатого железа от вторичного окислени и науглероживани охлаждение его провод т хододным водородом. Стадийное восстановление обеспечивает высокую интенсивность процесса восстановлени , котора не может быть достигнута путем применени в качестве восстановител одного водорода, При этом сокращаетс общее врем обработки , по сравнению с восстановлением одним водородом, приблизительно с 5 поIn a known manner, Tsugami-Taisuke, ferric-free spongy iron is obtained by reducing the ore with hydrogen. However, the final product obtained by this method has a high cost due to the use of expensive reducing-hydrogen. The proposed method is characterized in that the iron ore material that is preheated by the oxidizing gases is treated with a heated carbon-containing reducing gas to a degree of metallization of 60-80%, followed by hydrogen reduction. This ensures a reduction in the total processing time and a reduction in the cost of the product. At the same time, the obtained carbon-free sponge iron is cooled with hydrogen, which eliminates secondary oxidation and carbonization. The production of carbon-free sponge iron is produced in a retort, where iron ore material (ruts, oxides, concentrate, etc, e) is heated by oxidizing gases, such as combustion products, to 900-1 ° C. Recovery of preparatively heated iron ore material is carried out in the ave stage. In the first stage, the reduction is carried out with heated converted natural gas or other reducing gas with carbon potential (syngas, entsogas, etc.), to a degree of metallization of 6O-80%. In the second stage, the final reduction is performed with cold or heated hydrogen, The TeNmepaTypa reduction is 900-1000 ° C and does not exceed the softening temperature of the iron ore material. To protect the obtained carbon-free sponge iron from redoxing and carburizing, it is cooled hydrogeneous hydrogen. Staged reduction provides a high intensity of the reduction process, which cannot be achieved by using one hydrogen as a reducing agent. This reduces the overall processing time, compared to the reduction by one hydrogen, from about 5 to
4 час., что соотвеадтвувт увеличению пройг водительности иа 25-ЗО%.4 hours, which corresponds to an increase in water progression of 25% -30%.
Предлагаемый способ может быть осу ществлен также и в других агрегатах (кое вейерва обжигова машина, вращающа с печь, шахтна печь, реакт«ф с кип щим слоем и йр,).The proposed method can also be implemented in other units (a veyerva roasting machine, a rotary kiln, a shaft kiln, a fluidized bed reactor and a jar).
4 р р м у л а изобретение4 p r um a invention
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU6601118964A SU262127A1 (en) | 1966-12-12 | 1966-12-12 | Method of producing carbon-free spongy iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU6601118964A SU262127A1 (en) | 1966-12-12 | 1966-12-12 | Method of producing carbon-free spongy iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU262127A1 true SU262127A1 (en) | 1977-12-05 |
Family
ID=20439961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU6601118964A SU262127A1 (en) | 1966-12-12 | 1966-12-12 | Method of producing carbon-free spongy iron |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU262127A1 (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE2250421A1 (en) * | 2022-04-01 | 2023-10-02 | Luossavaara Kiirunavaara Ab | Method for producing steel and sponge iron manufacturing process |
| SE2250422A1 (en) * | 2022-04-01 | 2023-10-02 | Luossavaara Kiirunavaara Ab | Method and configuration for producing reduced metal material |
| SE2250976A1 (en) * | 2022-08-18 | 2024-02-19 | Luossavaara Kiirunavaara Ab | A direct reduction facility and a method of direct reduction of metal oxide |
| US12209852B2 (en) | 2020-10-22 | 2025-01-28 | Luossavaara-Kiirunavaara Ab | Blasting system and a method of explosive material charging |
| US12416480B2 (en) | 2020-10-22 | 2025-09-16 | Luossavaara-Kiirunavaara Ab | Detonator support device for charging a blasthole, blasting system, method of preparing a detonator support device, explosive material charging vehicle and data medium |
| US12448889B2 (en) | 2020-05-20 | 2025-10-21 | Luossavaara-Kiirunavaara Ab | Raise caving method for mining deposits, and a mining infrastructure, monitoring system, machinery, control system and data medium therefor |
-
1966
- 1966-12-12 SU SU6601118964A patent/SU262127A1/en active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12448889B2 (en) | 2020-05-20 | 2025-10-21 | Luossavaara-Kiirunavaara Ab | Raise caving method for mining deposits, and a mining infrastructure, monitoring system, machinery, control system and data medium therefor |
| US12209852B2 (en) | 2020-10-22 | 2025-01-28 | Luossavaara-Kiirunavaara Ab | Blasting system and a method of explosive material charging |
| US12416480B2 (en) | 2020-10-22 | 2025-09-16 | Luossavaara-Kiirunavaara Ab | Detonator support device for charging a blasthole, blasting system, method of preparing a detonator support device, explosive material charging vehicle and data medium |
| SE2250421A1 (en) * | 2022-04-01 | 2023-10-02 | Luossavaara Kiirunavaara Ab | Method for producing steel and sponge iron manufacturing process |
| SE2250422A1 (en) * | 2022-04-01 | 2023-10-02 | Luossavaara Kiirunavaara Ab | Method and configuration for producing reduced metal material |
| SE547277C2 (en) * | 2022-04-01 | 2025-06-17 | Luossavaara Kiirunavaara Ab | Method and configuration for producing reduced iron ore material |
| SE2250976A1 (en) * | 2022-08-18 | 2024-02-19 | Luossavaara Kiirunavaara Ab | A direct reduction facility and a method of direct reduction of metal oxide |
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