FI20217132A1 - Combined smelting of molten slags and residualsfrom stainless steel and ferrochromium works - Google Patents

Combined smelting of molten slags and residualsfrom stainless steel and ferrochromium works

Info

Publication number
FI20217132A1
FI20217132A1 FI20217132A FI20217132A FI20217132A1 FI 20217132 A1 FI20217132 A1 FI 20217132A1 FI 20217132 A FI20217132 A FI 20217132A FI 20217132 A FI20217132 A FI 20217132A FI 20217132 A1 FI20217132 A1 FI 20217132A1
Authority
FI
Finland
Prior art keywords
ferrochromium
works
stainless steel
residualsfrom
smelting
Prior art date
Application number
FI20217132A
Other languages
Finnish (fi)
Swedish (sv)
Inventor
Kimmo Vallo
Timo Parviainen
Original Assignee
Outokumpu Oy
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 Outokumpu Oy filed Critical Outokumpu Oy
Publication of FI20217132A1 publication Critical patent/FI20217132A1/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B3/00—General features in the manufacture of pig-iron
    • C21B3/04—Recovery of by-products, e.g. slag
    • C21B3/06—Treatment of liquid slag
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/02—Working-up flue dust
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B5/00—Treatment of  metallurgical  slag ; Artificial stone from molten  metallurgical  slag 
    • C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/005—Manufacture of stainless steel
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
    • C21C5/52—Manufacture of steel in electric furnaces
    • C21C5/5264—Manufacture of alloyed steels including ferro-alloys
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
    • C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
    • 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
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/20—Arc remelting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C33/00—Making ferrous alloys
    • C22C33/04—Making ferrous alloys by melting
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B2400/00—Treatment of slags originating from iron or steel processes
    • C21B2400/02—Physical or chemical treatment of slags
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
    • C21C2200/00—Recycling of waste material
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Plasma & Fusion (AREA)
  • Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Analytical Chemistry (AREA)
  • Structural Engineering (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The present invention relates to a method for smelting metal- and metal oxide- containing side streams, such as slags and wastes generated at stainless steel and ferrochromium works. The invented processing method is a smelting process for all side streams and residuals from the mentioned fields of industry. The streams are treated mainly in liquid phase for energy saving.
FI20217132A 2019-03-01 2020-02-28 Combined smelting of molten slags and residualsfrom stainless steel and ferrochromium works FI20217132A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI20195153A FI20195153A1 (en) 2019-03-01 2019-03-01 Combined smelting of molten slags and residuals from stainless steel and ferrochromium works
PCT/FI2020/050129 WO2020178480A1 (en) 2019-03-01 2020-02-28 Combined smelting of molten slags and residuals from stainless steel and ferrochromium works

Publications (1)

Publication Number Publication Date
FI20217132A1 true FI20217132A1 (en) 2021-08-26

Family

ID=72337367

Family Applications (2)

Application Number Title Priority Date Filing Date
FI20195153A FI20195153A1 (en) 2019-03-01 2019-03-01 Combined smelting of molten slags and residuals from stainless steel and ferrochromium works
FI20217132A FI20217132A1 (en) 2019-03-01 2020-02-28 Combined smelting of molten slags and residualsfrom stainless steel and ferrochromium works

Family Applications Before (1)

Application Number Title Priority Date Filing Date
FI20195153A FI20195153A1 (en) 2019-03-01 2019-03-01 Combined smelting of molten slags and residuals from stainless steel and ferrochromium works

Country Status (8)

Country Link
JP (1) JP2022523397A (en)
KR (1) KR20210134310A (en)
CN (1) CN113366129A (en)
CA (1) CA3129671A1 (en)
FI (2) FI20195153A1 (en)
SE (1) SE2150998A1 (en)
TW (1) TW202033771A (en)
WO (1) WO2020178480A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113265534B (en) * 2021-04-14 2023-03-31 嘉峪关宏电铁合金有限责任公司 Low-grade ferrochromium slag recycling production process

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ZA963234B (en) * 1995-05-02 1996-07-29 Holderbank Financ Glarus Process for the production of hydraulic binders and/or alloys such as e g ferrochromium of ferrovanadium
AT405839B (en) * 1996-01-17 1999-11-25 Holderbank Financ Glarus METHOD FOR PRODUCING RAW IRON, COLORED METAL ALLOYS, FECR AND SYNTHETIC BLAST FURNACE SLAGS USING METAL OXIDE CONTAINING WASTE COMBUSTION RESIDUES OR SLAGS
AT407263B (en) * 1999-04-22 2001-02-26 Holderbank Financ Glarus METHOD FOR REPRODUCING STEEL SLAG
JP2001316712A (en) * 2000-05-02 2001-11-16 Nippon Steel Corp Method for recovering chromium from chromium containing slag
AT412349B (en) * 2003-06-25 2005-01-25 Voest Alpine Ind Anlagen METHOD FOR PRODUCING AN ALLOYED METAL MELT AND PRODUCTION PLANT THEREFOR
KR20050109763A (en) * 2004-05-17 2005-11-22 주식회사 포스코 Method for recovery valuable metals from steel-making slag of stainless steel
KR100793591B1 (en) * 2006-12-28 2008-01-14 주식회사 포스코 Method for reduction of metallic chromium from slag containing chromium oxide
CN107058677A (en) * 2017-05-22 2017-08-18 山西太钢不锈钢股份有限公司 A kind of smelting process of utilization stainless steel electroslag
CN108676942A (en) * 2018-05-18 2018-10-19 廖辉明 The materials such as a kind of iron content and/or zinc lead bronze tin cooperate with processing recovery method with molten steel slag

Also Published As

Publication number Publication date
WO2020178480A1 (en) 2020-09-10
CN113366129A (en) 2021-09-07
TW202033771A (en) 2020-09-16
KR20210134310A (en) 2021-11-09
SE2150998A1 (en) 2021-08-12
FI20195153A1 (en) 2020-09-02
CA3129671A1 (en) 2020-09-10
JP2022523397A (en) 2022-04-22

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