KE2998A - Passivating process for sponge iron - Google Patents
Passivating process for sponge ironInfo
- Publication number
- KE2998A KE2998A KE2998A KE299879A KE2998A KE 2998 A KE2998 A KE 2998A KE 2998 A KE2998 A KE 2998A KE 299879 A KE299879 A KE 299879A KE 2998 A KE2998 A KE 2998A
- Authority
- KE
- Kenya
- Prior art keywords
- sponge iron
- passivating process
- passivating
- sponge
- iron
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
- C23C8/08—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases only one element being applied
- C23C8/10—Oxidising
- C23C8/12—Oxidising using elemental oxygen or ozone
- C23C8/14—Oxidising of ferrous surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
- B01J19/002—Avoiding undesirable reactions or side-effects, e.g. avoiding explosions, or improving the yield by suppressing side-reactions
-
- 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
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/06—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using gases
-
- 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
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Geology (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture Of Iron (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Thermotherapy And Cooling Therapy Devices (AREA)
- Compounds Of Iron (AREA)
- Coating With Molten Metal (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00428147A US3844764A (en) | 1973-12-26 | 1973-12-26 | Process for the continuous passivation of sponge iron particles |
Publications (1)
Publication Number | Publication Date |
---|---|
KE2998A true KE2998A (en) | 1979-12-14 |
Family
ID=23697735
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KE2998A KE2998A (en) | 1973-12-26 | 1979-10-24 | Passivating process for sponge iron |
Country Status (19)
Country | Link |
---|---|
US (1) | US3844764A (de) |
JP (1) | JPS50116343A (de) |
AR (1) | AR201803A1 (de) |
AT (1) | AT337225B (de) |
BE (1) | BE823549A (de) |
BR (1) | BR7410603D0 (de) |
CA (1) | CA1028602A (de) |
ES (1) | ES433141A1 (de) |
FR (1) | FR2256261B1 (de) |
GB (1) | GB1445650A (de) |
IT (1) | IT1027824B (de) |
KE (1) | KE2998A (de) |
LU (1) | LU71527A1 (de) |
MY (1) | MY8000219A (de) |
NL (1) | NL7416614A (de) |
NO (1) | NO137450C (de) |
SE (1) | SE7416089L (de) |
SU (1) | SU563923A3 (de) |
ZA (1) | ZA748089B (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4070180A (en) * | 1976-08-23 | 1978-01-24 | United States Steel Corporation | Process for the passivation of sponge iron utilizing reducing gases containing free oxygen |
DE3419638C2 (de) * | 1984-05-25 | 1987-02-26 | MAN Technologie GmbH, 8000 München | Verfahren zur oxidativen Erzeugung von Schutzschichten auf einer Legierung |
US5849817A (en) * | 1994-03-24 | 1998-12-15 | Silberline Limited | Metal pigments |
GB2288411B (en) * | 1994-03-24 | 1998-04-15 | Silberline Ltd | Metal pigments |
JP2001278420A (ja) * | 2000-03-30 | 2001-10-10 | Nippon Steel Corp | 還元鉄の屋外貯蔵方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2677669A (en) * | 1945-01-11 | 1954-05-04 | Atomic Energy Commission | Stepwise stabilization of reduced metal catalysts |
US2766108A (en) * | 1955-06-30 | 1956-10-09 | Bethlehem Steel Corp | Method of deactivating sponge iron |
US3147106A (en) * | 1961-04-06 | 1964-09-01 | Hydrocarbon Research Inc | Use of lined passivation chamber in an iron powder passivating process |
US3615340A (en) * | 1968-11-18 | 1971-10-26 | Exxon Research Engineering Co | Quenching and passivation of particulate metals |
US3617394A (en) * | 1968-11-22 | 1971-11-02 | Exxon Research Engineering Co | Kiln passivation of reduced ores |
-
1973
- 1973-12-26 US US00428147A patent/US3844764A/en not_active Expired - Lifetime
-
1974
- 1974-12-18 GB GB5470074A patent/GB1445650A/en not_active Expired
- 1974-12-19 AT AT1013474A patent/AT337225B/de not_active IP Right Cessation
- 1974-12-19 NO NO744604A patent/NO137450C/no unknown
- 1974-12-19 AR AR256990A patent/AR201803A1/es active
- 1974-12-19 NL NL7416614A patent/NL7416614A/xx not_active Application Discontinuation
- 1974-12-19 ZA ZA00748089A patent/ZA748089B/xx unknown
- 1974-12-19 BE BE2054040A patent/BE823549A/xx not_active IP Right Cessation
- 1974-12-19 FR FR7442046A patent/FR2256261B1/fr not_active Expired
- 1974-12-19 JP JP49146267A patent/JPS50116343A/ja active Pending
- 1974-12-19 LU LU71527A patent/LU71527A1/xx unknown
- 1974-12-19 BR BR10603/74A patent/BR7410603D0/pt unknown
- 1974-12-19 ES ES433141A patent/ES433141A1/es not_active Expired
- 1974-12-19 SE SE7416089A patent/SE7416089L/xx unknown
- 1974-12-19 IT IT30749/74A patent/IT1027824B/it active
- 1974-12-24 CA CA216,773A patent/CA1028602A/en not_active Expired
- 1974-12-26 SU SU7402096391A patent/SU563923A3/ru active
-
1979
- 1979-10-24 KE KE2998A patent/KE2998A/xx unknown
-
1980
- 1980-12-30 MY MY219/80A patent/MY8000219A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
NL7416614A (nl) | 1975-06-30 |
JPS50116343A (de) | 1975-09-11 |
CA1028602A (en) | 1978-03-28 |
NO137450C (no) | 1978-03-01 |
LU71527A1 (de) | 1975-06-17 |
SE7416089L (de) | 1975-06-27 |
FR2256261A1 (de) | 1975-07-25 |
MY8000219A (en) | 1980-12-31 |
AR201803A1 (es) | 1975-04-15 |
IT1027824B (it) | 1978-12-20 |
ATA1013474A (de) | 1976-10-15 |
DE2461152A1 (de) | 1975-07-03 |
AT337225B (de) | 1977-06-27 |
AU7652174A (en) | 1976-06-17 |
ES433141A1 (es) | 1976-11-16 |
FR2256261B1 (de) | 1979-07-27 |
GB1445650A (en) | 1976-08-11 |
BR7410603D0 (pt) | 1975-09-02 |
ZA748089B (en) | 1976-01-28 |
BE823549A (fr) | 1975-04-16 |
US3844764A (en) | 1974-10-29 |
DE2461152B2 (de) | 1976-10-28 |
NO744604L (de) | 1975-07-21 |
NO137450B (no) | 1977-11-21 |
SU563923A3 (ru) | 1977-06-30 |
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