WO2013169673A1 - Reclaiming and inhibiting activation of dri fines - Google Patents

Reclaiming and inhibiting activation of dri fines Download PDF

Info

Publication number
WO2013169673A1
WO2013169673A1 PCT/US2013/039767 US2013039767W WO2013169673A1 WO 2013169673 A1 WO2013169673 A1 WO 2013169673A1 US 2013039767 W US2013039767 W US 2013039767W WO 2013169673 A1 WO2013169673 A1 WO 2013169673A1
Authority
WO
WIPO (PCT)
Prior art keywords
dri
coating material
fines
reclaiming
pellets
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.)
Ceased
Application number
PCT/US2013/039767
Other languages
English (en)
French (fr)
Inventor
David Hendrickson
John Brandon
Les HART
John Anderson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nu Iron Technology LLC
Original Assignee
Nu Iron Technology LLC
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 Nu Iron Technology LLC filed Critical Nu Iron Technology LLC
Priority to MX2014013418A priority Critical patent/MX377851B/es
Priority to IN10313DEN2014 priority patent/IN2014DN10313A/en
Priority to US13/889,684 priority patent/US9045809B2/en
Publication of WO2013169673A1 publication Critical patent/WO2013169673A1/en
Priority to US14/202,412 priority patent/US9464338B2/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • 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
    • C21B13/0093—Protecting against oxidation
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/16—Sintering; Agglomerating
    • C22B1/216—Sintering; Agglomerating in rotary furnaces
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/2406—Binding; Briquetting ; Granulating pelletizing
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B1/00—Preliminary treatment of ores or scrap
    • C22B1/14—Agglomerating; Briquetting; Binding; Granulating
    • C22B1/24—Binding; Briquetting ; Granulating
    • C22B1/242—Binding; Briquetting ; Granulating with binders
    • C22B1/244—Binding; Briquetting ; Granulating with binders organic
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F11/00—Inhibiting corrosion of metallic material by applying inhibitors to the surface in danger of corrosion or adding them to the corrosive agent
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F14/00—Inhibiting incrustation in apparatus for heating liquids for physical or chemical purposes
    • 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
    • C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
    • C23F15/00—Other methods of preventing corrosion or incrustation
    • 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
    • Y02P10/10—Reduction of greenhouse gas [GHG] emissions
    • Y02P10/134—Reduction of greenhouse gas [GHG] emissions by avoiding CO2, e.g. using hydrogen

Definitions

  • the antioxidant in the coating material may also be selected from the group consisting of at least one of butllated hydroxytoluene, carotenoid, phytosterol, squalene, vitamin E, tocopherols, tocotrienols, and mixtures thereof.
  • the coating material may be applied at a rate between 0.2 and 2.0 gallons per ton of coated DRl, or between 0.4 and 1.0 gallon per ton of DRl coated.
  • FIG. 1 is a top view and FIG. 2 is a side view illustrating an embodiment of a method for reclaiming DRI fines where the coating material is applied as a liquid.
  • FIG. 8 is a view of yet another embodiment of a method for reclaiming DRI fines.
  • the method of reclaiming DRI fines may comprise the steps of forming a moving stream containing DRI pellets and DRI fines coating the moving stream of DRI pellets and DRI fines with a coating material having a melting point between 70 and 200 °F, including at least one antioxidant and at least one carboxylic material comprising at least one selected from the group consisting of coatable fatty acid and an esterified derivative thereof to form a coating on the DRI pellets and DRI fines, and, thereafter, moving the DRI agglomerates to a facility for present or later use in making steel.
  • the coating material 18 adheres to the DRI pellets and DRI fines to form a plurality of DRI agglomerates reclaiming the DRI fines for use in steelmaking and at the same time inhibiting activation of the DRI.
  • the flow rate of coating material 18 and speed of the first conveyor 10 can be regulated during operation to provide effective formation of the plurality of DRI agglomerates.
  • the antioxidant in the coating material also inhibits breakdown of the carboxylic material having at least one selected from the group consisting of coatable fatty acid and/ or an esterified derivative thereof in the coating material, and inhibits creation of CO undesirable in transportation and handling of DRI.
  • This antioxidant may be selected from the group consisting of at least one of butlylated
  • the agglomerated DRl pellets and DRl fines may be additionally coated with coating material 55 by liquid coating material sprayed through nozzles 59 or by spreading (not shown) solid coating material 18 as the moving stream of DRl pellets, and are transported to an EAF for steelmaking with reduced DRl fines emissions and reduced loss of iron units.
  • the first test was with 200 grams of DRI pellets and DRI fines, coated with palm oil containing a mixture of antioxidant of butylated hydroxytoluene, carotenoid, phytosterol, squalene, vitamin E, tocopherols, tocotrienols.
  • the coating was done by heating the coating material 18 to 145°F. before application to DRI pellets and DRI fines.
  • the results of the tests are shown in FIG. 12. As shown by FIG. 12, the reactivity to oxygen of the coated DRI with coating material 18 (palm oil including antioxidant) reduced from 20.7 to 0.2 in twenty minutes.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Manufacturing & Machinery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Laminated Bodies (AREA)
  • Fats And Perfumes (AREA)
  • Glanulating (AREA)
PCT/US2013/039767 2012-05-05 2013-05-06 Reclaiming and inhibiting activation of dri fines Ceased WO2013169673A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
MX2014013418A MX377851B (es) 2012-05-05 2013-05-06 Recuperación e inhibición de la activación de finos de dri.
IN10313DEN2014 IN2014DN10313A (enExample) 2012-05-05 2013-05-06
US13/889,684 US9045809B2 (en) 2012-05-05 2013-05-08 Reclaiming and inhibiting activation of DRI fines
US14/202,412 US9464338B2 (en) 2012-05-05 2014-03-10 Reclaiming and inhibiting activation of DRI dust and fines

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261643259P 2012-05-05 2012-05-05
US61/643,259 2012-05-05

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/889,684 Continuation US9045809B2 (en) 2012-05-05 2013-05-08 Reclaiming and inhibiting activation of DRI fines

Publications (1)

Publication Number Publication Date
WO2013169673A1 true WO2013169673A1 (en) 2013-11-14

Family

ID=49551194

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2013/039767 Ceased WO2013169673A1 (en) 2012-05-05 2013-05-06 Reclaiming and inhibiting activation of dri fines

Country Status (4)

Country Link
US (1) US9045809B2 (enExample)
IN (1) IN2014DN10313A (enExample)
MX (1) MX377851B (enExample)
WO (1) WO2013169673A1 (enExample)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9657993B2 (en) * 2015-02-20 2017-05-23 Gestion Mcmarland Inc. Solid agglomerate of fine metal particles comprising a liquid oily lubricant and method for making same
US10704119B2 (en) 2017-05-04 2020-07-07 Nu-Iron Technology, Llc. Cokeless sinter blend compositions
CN107557510A (zh) * 2017-08-22 2018-01-09 北京首钢国际工程技术有限公司 石灰浆等厚均化喷涂及浆液回收方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5751210A (en) * 1980-09-12 1982-03-26 Sumitomo Heavy Ind Ltd Method for preventing spontaneous combustion of reduced iron
US4692353A (en) * 1982-11-05 1987-09-08 Ministry Of Industry & Minerals Specialized Institute For Engineering Industries Method of inhibiting degeneration of direct reduced iron
JPH08260172A (ja) * 1995-03-23 1996-10-08 Kobe Steel Ltd 表面被覆還元鉄および還元鉄の酸化防止法
JP2002363625A (ja) * 2001-06-05 2002-12-18 Kobe Steel Ltd 表面被覆還元鉄、その製造方法および溶解方法
WO2012034015A1 (en) * 2010-09-10 2012-03-15 Nu-Iron Technology, Llc Processed dri material

Family Cites Families (16)

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Publication number Priority date Publication date Assignee Title
US2833642A (en) 1954-11-10 1958-05-06 Gen Mills Inc Binder additive for making ore pellets
US2874037A (en) 1957-12-18 1959-02-17 Gulf Oil Corp Process for stabilizing pyrophoric iron
US3407089A (en) 1965-07-08 1968-10-22 Sun Oil Co Coating composition for pyrophoric metal powders and shavings
US3556838A (en) 1966-11-01 1971-01-19 Exxon Research Engineering Co Process for coating active iron and the coated iron
US3520676A (en) 1968-05-28 1970-07-14 Eastman Kodak Co Stabilization of pyrophoric metal powder
DE2524517B2 (de) 1975-06-03 1979-01-18 Philips Patentverwaltung Gmbh, 2000 Hamburg Verfahren zur Stabilisierung pyrophorer Eisenpulver
US4069015A (en) 1975-09-19 1978-01-17 Midrex Corporation Method of inhibiting rusting of sponge iron
US4329168A (en) 1980-07-01 1982-05-11 Rubio Charles A Amine treatment for passivating sponge iron
AT367804B (de) * 1980-10-01 1982-08-10 Voest Alpine Ag Verfahren zur behandlung von eisenschwamm
US4417992A (en) 1981-07-30 1983-11-29 Nalco Chemical Company Dust control
DE4138231C1 (enExample) 1991-11-21 1992-10-22 Skw Trostberg Ag, 8223 Trostberg, De
CA2315955A1 (en) 2000-08-08 2002-02-08 Q-X Enviro Products Ltd. Dust control composition
BR0106149A (pt) 2001-12-17 2003-09-23 Samarco Mineracao Sa Pelotas de minério de ferro com redução da abrasão, colagem, degradação e emissão de poeira, e processo de sua fabricação
GB0416700D0 (en) 2004-07-27 2004-09-01 Ciba Spec Chem Water Treat Ltd Dust suppresson and reduction of surface oxidation for mineral agglomerates
US8163059B2 (en) 2007-02-12 2012-04-24 Nalco Company Coating oil comprising by-products from the manufacture of fatty acid alkyl esters and/or biodiesel
JP5464317B2 (ja) * 2007-11-22 2014-04-09 Ｊｆｅスチール株式会社 焼結鉱製造用成形原料の製造方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5751210A (en) * 1980-09-12 1982-03-26 Sumitomo Heavy Ind Ltd Method for preventing spontaneous combustion of reduced iron
US4692353A (en) * 1982-11-05 1987-09-08 Ministry Of Industry & Minerals Specialized Institute For Engineering Industries Method of inhibiting degeneration of direct reduced iron
JPH08260172A (ja) * 1995-03-23 1996-10-08 Kobe Steel Ltd 表面被覆還元鉄および還元鉄の酸化防止法
JP2002363625A (ja) * 2001-06-05 2002-12-18 Kobe Steel Ltd 表面被覆還元鉄、その製造方法および溶解方法
WO2012034015A1 (en) * 2010-09-10 2012-03-15 Nu-Iron Technology, Llc Processed dri material

Also Published As

Publication number Publication date
US20130291682A1 (en) 2013-11-07
MX377851B (es) 2025-03-11
IN2014DN10313A (enExample) 2015-08-07
US9045809B2 (en) 2015-06-02
MX2014013418A (es) 2015-06-23

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