GB882324A - Method for reducing iron ore in rotary kiln - Google Patents
Method for reducing iron ore in rotary kilnInfo
- Publication number
- GB882324A GB882324A GB398758A GB398758A GB882324A GB 882324 A GB882324 A GB 882324A GB 398758 A GB398758 A GB 398758A GB 398758 A GB398758 A GB 398758A GB 882324 A GB882324 A GB 882324A
- Authority
- GB
- United Kingdom
- Prior art keywords
- kiln
- gas
- reduced
- combustible gas
- reducing agent
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Iron oxide is reduced by means of a large excess of solid carbonaceous reducing agent in a rotary kiln operating at sub-atmospheric pressure and heated by the introduction of preheated combustible gas at one end of the kiln in amount sufficient to avoid, as far as possible, the direct combustion of solid carbonaceous material, and oxygen containing gas introduced through side tubes distributed along the kiln, in an amount sufficient to give the desired temperature distribution in the kiln and to burn completely the combustible gas, the feed material occupying 25-45% of the kiln volume. As combustible gas, petroleum gas, coal gas or water gas may be used, which may be indirectly preheated and may be completely burned before reaching the preheating zone at the charging end of the kiln. Ilmenite, magnetite, or taconite ore may be reduced by this process, and they may be pelletised using 5% Na Cl as binder. Five times the amount of reducing agent theoretically required may be used, the excess being separated from the reduced material and recycled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB398758A GB882324A (en) | 1958-02-06 | 1958-02-06 | Method for reducing iron ore in rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB398758A GB882324A (en) | 1958-02-06 | 1958-02-06 | Method for reducing iron ore in rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB882324A true GB882324A (en) | 1961-11-15 |
Family
ID=9768658
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB398758A Expired GB882324A (en) | 1958-02-06 | 1958-02-06 | Method for reducing iron ore in rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB882324A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3170786A (en) * | 1962-02-02 | 1965-02-23 | R N Corp | Rotary kiln processing of chemically reactive materials |
| US3228670A (en) * | 1963-01-23 | 1966-01-11 | R N Corp | Methods and apparatus for ore reduction and processing of other chemically reactive aggregates |
-
1958
- 1958-02-06 GB GB398758A patent/GB882324A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3170786A (en) * | 1962-02-02 | 1965-02-23 | R N Corp | Rotary kiln processing of chemically reactive materials |
| US3228670A (en) * | 1963-01-23 | 1966-01-11 | R N Corp | Methods and apparatus for ore reduction and processing of other chemically reactive aggregates |
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