NL7416614A - Werkwijze voor het continu passiveren van sponsijzerdeeltjes. - Google Patents

Werkwijze voor het continu passiveren van sponsijzerdeeltjes.

Info

Publication number
NL7416614A
NL7416614A NL7416614A NL7416614A NL7416614A NL 7416614 A NL7416614 A NL 7416614A NL 7416614 A NL7416614 A NL 7416614A NL 7416614 A NL7416614 A NL 7416614A NL 7416614 A NL7416614 A NL 7416614A
Authority
NL
Netherlands
Prior art keywords
iron particles
sponge iron
continuous passivation
passivation
continuous
Prior art date
Application number
NL7416614A
Other languages
English (en)
Original Assignee
Midrex Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Midrex Corp filed Critical Midrex Corp
Publication of NL7416614A publication Critical patent/NL7416614A/nl

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)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Thermotherapy And Cooling Therapy Devices (AREA)
  • Compounds Of Iron (AREA)
  • Coating With Molten Metal (AREA)
NL7416614A 1973-12-26 1974-12-19 Werkwijze voor het continu passiveren van sponsijzerdeeltjes. NL7416614A (nl)

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
NL7416614A true NL7416614A (nl) 1975-06-30

Family

ID=23697735

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7416614A NL7416614A (nl) 1973-12-26 1974-12-19 Werkwijze voor het continu passiveren van sponsijzerdeeltjes.

Country Status (19)

Country Link
US (1) US3844764A (nl)
JP (1) JPS50116343A (nl)
AR (1) AR201803A1 (nl)
AT (1) AT337225B (nl)
BE (1) BE823549A (nl)
BR (1) BR7410603D0 (nl)
CA (1) CA1028602A (nl)
ES (1) ES433141A1 (nl)
FR (1) FR2256261B1 (nl)
GB (1) GB1445650A (nl)
IT (1) IT1027824B (nl)
KE (1) KE2998A (nl)
LU (1) LU71527A1 (nl)
MY (1) MY8000219A (nl)
NL (1) NL7416614A (nl)
NO (1) NO137450C (nl)
SE (1) SE7416089L (nl)
SU (1) SU563923A3 (nl)
ZA (1) ZA748089B (nl)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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
DE3419638A1 (de) * 1984-05-25 1985-11-28 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zur erzeugung von oxidischen schutzschichten auf der oberflaeche von metallen bzw. metallegierungen
GB2288411B (en) * 1994-03-24 1998-04-15 Silberline Ltd Metal pigments
US5849817A (en) * 1994-03-24 1998-12-15 Silberline Limited 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
KE2998A (en) 1979-12-14
FR2256261B1 (nl) 1979-07-27
JPS50116343A (nl) 1975-09-11
BE823549A (fr) 1975-04-16
AT337225B (de) 1977-06-27
ES433141A1 (es) 1976-11-16
MY8000219A (en) 1980-12-31
NO137450C (no) 1978-03-01
SE7416089L (nl) 1975-06-27
AU7652174A (en) 1976-06-17
LU71527A1 (nl) 1975-06-17
ZA748089B (en) 1976-01-28
GB1445650A (en) 1976-08-11
CA1028602A (en) 1978-03-28
DE2461152B2 (de) 1976-10-28
US3844764A (en) 1974-10-29
NO137450B (no) 1977-11-21
NO744604L (nl) 1975-07-21
DE2461152A1 (de) 1975-07-03
ATA1013474A (de) 1976-10-15
FR2256261A1 (nl) 1975-07-25
AR201803A1 (es) 1975-04-15
IT1027824B (it) 1978-12-20
BR7410603D0 (pt) 1975-09-02
SU563923A3 (ru) 1977-06-30

Similar Documents

Publication Publication Date Title
NL7309978A (nl) Werkwijze voor het continu oxyderen van water.
NL7412184A (nl) Werkwijze voor het bereiden van bekledings- poeders.
NL7506688A (nl) Werkwijze voor het continu veresteren van chloor- silanen.
NL7415645A (nl) Werkwijze voor het bereiden van kooks.
NL7415875A (nl) Inrichting voor het continu reinigen van zeef- ones tijdens het drukken.
NL7415736A (nl) Werkwijze voor de bereiding van slijpmiddelen.
NL7505901A (nl) Werkwijze voor het reinigen van het oppervlak van continu gegoten banden.
NL7411533A (nl) Werkwijze voor de continue bereiding van polyurethandispersies.
NL7416142A (nl) Werkwijze voor het bereiden van kooks.
NL7416198A (nl) Werkwijze voor het trekken van stafmateriaal.
NL7416041A (nl) Werkwijze voor de behandeling van grondopper- vlakken.
NL158153B (nl) Werkwijze voor het continu bereiden van ethylbenzeen.
NL165914B (nl) Werkwijze voor het continu bereiden van gewassen caseinekorrels.
NL7514592A (nl) Galvaniseerinrichting voor het gedeeltelijk me- talliseren van continu doorlopende voorwerpen.
NL7416614A (nl) Werkwijze voor het continu passiveren van sponsijzerdeeltjes.
NL181411C (nl) Verbetering van de werkwijze voor het malen van vaste deeltjes in een vloeistof.
NL7409978A (nl) Werkwijze voor het vervaardigen van mikrobolletjes.
NL183928C (nl) Werkwijze voor het continu vervaardigen van wandpanelen.
NL159086B (nl) Werkwijze voor het anti-statisch maken van materiaal.
NL7414620A (nl) Werkwijze voor het isomeriseren van alkenen.
NL161695C (nl) Inrichting voor het continu koud verstevigen van staaf- vormige metalen gewalste draad.
NL7315642A (nl) Werkwijze en inrichting voor het verpsroeien van gesmolten materiaal.
NL151410B (nl) Werkwijze voor het vormen van polytetrafluoretheenagglomeraten.
NL7408953A (nl) Werkwijze voor het continu bereiden van ftaal-
NL7607913A (nl) Werkwijze en systeem voor het continu vervaar- digen van ijzer.

Legal Events

Date Code Title Description
BV The patent application has lapsed