ES363307A1 - Process for directly reducing materials containing iron oxide in a rotary kiln - Google Patents
Process for directly reducing materials containing iron oxide in a rotary kilnInfo
- Publication number
- ES363307A1 ES363307A1 ES363307A ES363307A ES363307A1 ES 363307 A1 ES363307 A1 ES 363307A1 ES 363307 A ES363307 A ES 363307A ES 363307 A ES363307 A ES 363307A ES 363307 A1 ES363307 A1 ES 363307A1
- Authority
- ES
- Spain
- Prior art keywords
- heat
- kiln
- gases
- charge
- iron oxide
- 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.)
- Expired
Links
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
- C21B13/08—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
- C21B13/0086—Conditioning, transformation of reduced iron ores
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)
- Manufacture And Refinement Of Metals (AREA)
- Muffle Furnaces And Rotary Kilns (AREA)
- Manufacture Of Iron (AREA)
- Pyrane Compounds (AREA)
Abstract
Iron oxide is reduced by means of a solid carbonaceous reducing agent in a rotary kiln in which the flows of charge and gas are co-current, the heat of the exhaust gases being used at least in part to heat and/or dry the sponge iron which is separated from the kiln discharge after the latter has been cooled, preferably by immersion in or spraying with water. The reducing agent may be coal of high volatile content and a particle size of less than 4 mm., and may be blown into the charging end of the kiln in a stream of oxygen-containing gases. After use for heating and/or drying the sponge the gases may be used, possibly after combustion at the point of use, to pre-heat or dry the kiln charge. In other applications the gases may be used to harden pellets formed from the iron fines produced, or for steam raising. In a preferred embodiment of the invention, two kilns are used having their flow directions in opposition so that a part of the hot exhaust gases from each may be conveniently used to heat the charge and/or combustion air of the other.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19681583954 DE1583954B2 (en) | 1968-02-08 | 1968-02-08 | PROCESS FOR THE DIRECT REDUCTION OF FERROUS OXYDE-CONTAINING MATERIALS IN THE ROTATING TUBE FURNACE IN THE DC PROCESS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES363307A1 true ES363307A1 (en) | 1970-12-16 |
Family
ID=5679588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES363307A Expired ES363307A1 (en) | 1968-02-08 | 1970-02-05 | Process for directly reducing materials containing iron oxide in a rotary kiln |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS514929B1 (en) |
| AT (1) | AT291319B (en) |
| BE (1) | BE728153A (en) |
| ES (1) | ES363307A1 (en) |
| FR (1) | FR2001568A1 (en) |
| GB (1) | GB1203532A (en) |
| NO (1) | NO124268B (en) |
| PL (1) | PL76027B1 (en) |
| SE (1) | SE356313B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7167534B2 (en) * | 2018-08-06 | 2022-11-09 | 住友金属鉱山株式会社 | Method for smelting oxide ore |
| JP7196461B2 (en) * | 2018-08-21 | 2022-12-27 | 住友金属鉱山株式会社 | Method for smelting oxide ore |
-
1969
- 1969-01-27 JP JP627269A patent/JPS514929B1/ja active Pending
- 1969-01-28 AT AT85169A patent/AT291319B/en not_active IP Right Cessation
- 1969-01-30 NO NO36469A patent/NO124268B/no unknown
- 1969-01-30 GB GB525469A patent/GB1203532A/en not_active Expired
- 1969-02-04 PL PL13153769A patent/PL76027B1/pl unknown
- 1969-02-07 FR FR6902891A patent/FR2001568A1/fr not_active Withdrawn
- 1969-02-07 SE SE168669A patent/SE356313B/xx unknown
- 1969-02-07 BE BE728153D patent/BE728153A/xx unknown
-
1970
- 1970-02-05 ES ES363307A patent/ES363307A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT291319B (en) | 1971-07-12 |
| FR2001568A1 (en) | 1969-09-26 |
| GB1203532A (en) | 1970-08-26 |
| BE728153A (en) | 1969-07-16 |
| JPS514929B1 (en) | 1976-02-16 |
| PL76027B1 (en) | 1975-02-28 |
| NO124268B (en) | 1972-03-27 |
| SE356313B (en) | 1973-05-21 |
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