KR100793591B1 - 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법 - Google Patents
산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법 Download PDFInfo
- Publication number
- KR100793591B1 KR100793591B1 KR20060136918A KR20060136918A KR100793591B1 KR 100793591 B1 KR100793591 B1 KR 100793591B1 KR 20060136918 A KR20060136918 A KR 20060136918A KR 20060136918 A KR20060136918 A KR 20060136918A KR 100793591 B1 KR100793591 B1 KR 100793591B1
- Authority
- KR
- South Korea
- Prior art keywords
- slag
- chromium
- reducing
- aluminum dross
- chromium oxide
- Prior art date
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- 239000002893 slag Substances 0.000 title claims abstract description 103
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 239000011651 chromium Substances 0.000 title claims abstract description 52
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 47
- 238000000034 method Methods 0.000 title claims abstract description 36
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 title claims abstract description 31
- 229910000423 chromium oxide Inorganic materials 0.000 title claims abstract description 31
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 55
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 55
- 239000010935 stainless steel Substances 0.000 claims abstract description 20
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims description 25
- 238000007664 blowing Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 18
- 239000001301 oxygen Substances 0.000 claims description 18
- 229910052760 oxygen Inorganic materials 0.000 claims description 18
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 14
- 238000002347 injection Methods 0.000 claims description 11
- 239000007924 injection Substances 0.000 claims description 11
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 10
- 238000009628 steelmaking Methods 0.000 claims description 9
- 229910001209 Low-carbon steel Inorganic materials 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 229910052786 argon Inorganic materials 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims description 4
- 239000007791 liquid phase Substances 0.000 claims description 2
- 238000011084 recovery Methods 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 3
- 229910000831 Steel Inorganic materials 0.000 description 28
- 239000010959 steel Substances 0.000 description 28
- 238000006722 reduction reaction Methods 0.000 description 26
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 22
- 229910052751 metal Inorganic materials 0.000 description 18
- 239000002184 metal Substances 0.000 description 18
- 239000003638 chemical reducing agent Substances 0.000 description 15
- 229910001021 Ferroalloy Inorganic materials 0.000 description 10
- 238000006243 chemical reaction Methods 0.000 description 9
- 229910052742 iron Inorganic materials 0.000 description 9
- 150000002739 metals Chemical class 0.000 description 9
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 8
- XWHPIFXRKKHEKR-UHFFFAOYSA-N iron silicon Chemical compound [Si].[Fe] XWHPIFXRKKHEKR-UHFFFAOYSA-N 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 8
- 229910052710 silicon Inorganic materials 0.000 description 8
- 239000010703 silicon Substances 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 238000010079 rubber tapping Methods 0.000 description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 5
- 230000003647 oxidation Effects 0.000 description 5
- 238000007254 oxidation reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 238000013019 agitation Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910017082 Fe-Si Inorganic materials 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 229910017133 Fe—Si Inorganic materials 0.000 description 2
- 239000006227 byproduct Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- -1 expensive chromium Chemical class 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910005347 FeSi Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- NJFMNPFATSYWHB-UHFFFAOYSA-N ac1l9hgr Chemical compound [Fe].[Fe] NJFMNPFATSYWHB-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000029142 excretion Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000010406 interfacial reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000003923 scrap metal Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
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- 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
- 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
- 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
- C21C5/54—Processes yielding slags of special composition
-
- 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
- C21C7/0037—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00 by injecting powdered material
-
- 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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/04—Dry methods smelting of sulfides or formation of mattes by aluminium, other metals or silicon
-
- 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
- C22B21/00—Obtaining aluminium
- C22B21/0038—Obtaining aluminium by other processes
- C22B21/0069—Obtaining aluminium by other processes from scrap, skimmings or any secondary source aluminium, e.g. recovery of alloy constituents
-
- 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
- C22B34/00—Obtaining refractory metals
- C22B34/30—Obtaining chromium, molybdenum or tungsten
- C22B34/32—Obtaining chromium
-
- 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)
- Engineering & Computer Science (AREA)
- Metallurgy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
구분 | 테스트번호 | 슬래그 중 Cr2O3 함량(%) |
환원제 투입 전 | 1 | 17.45 |
2 | 31.70 | |
본 발명의 예 | 1 | 1.91 |
2 | 3.69 | |
3 | 3.69 | |
4 | 4.98 | |
5 | 2.55 | |
비교예 | 6 | 6.83 |
7 | 7.75 | |
8 | 8.78 | |
9 | 8.63 | |
10 | 11.45 |
Claims (4)
- 제1항에 있어서,상기 분체 알루미늄 드로스의 취입은 입도가 1㎜ 내지 5㎜이며, 질소(N) 또는 알곤(Ar) 가스 중 적어도 하나의 불활성 가스와 함께 연강관을 통하여 슬래그 내의 크롬을 환원하는 화학 당량 이상의 양을 취입하는 것을 특징으로 하는 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법.
- 제1항에 있어서,상기 분체 알루미늄 드로스의 취입은 전기로 조업 중 산소 취입이 완료된 시점 또는 전기로 적산전력 300~400㎾/ton 시점에서 이루어지는 것을 특징으로 하는 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법.
- 제1항에 있어서,상기 전기로 슬래그의 염기도를 1.1 내지 1.7로 조정하며, 슬래그 중 알루미나 함량을 10% 이상으로 유지하는 것을 특징으로 하는 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20060136918A KR100793591B1 (ko) | 2006-12-28 | 2006-12-28 | 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법 |
JP2007327035A JP4778501B2 (ja) | 2006-12-28 | 2007-12-19 | 含酸化クロムスラグからのクロム金属還元方法 |
US11/964,130 US20080156144A1 (en) | 2006-12-28 | 2007-12-26 | Method for reducing to metallic chromium the chromium oxide in slag from stainless steel processing |
CNA200710301178XA CN101210288A (zh) | 2006-12-28 | 2007-12-26 | 从含氧化铬的炉渣中还原金属铬的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR20060136918A KR100793591B1 (ko) | 2006-12-28 | 2006-12-28 | 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법 |
Publications (1)
Publication Number | Publication Date |
---|---|
KR100793591B1 true KR100793591B1 (ko) | 2008-01-14 |
Family
ID=39217448
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR20060136918A KR100793591B1 (ko) | 2006-12-28 | 2006-12-28 | 산화크롬 함유 슬래그로부터의 크롬 금속 환원 방법 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080156144A1 (ko) |
JP (1) | JP4778501B2 (ko) |
KR (1) | KR100793591B1 (ko) |
CN (1) | CN101210288A (ko) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN105907991A (zh) * | 2016-06-30 | 2016-08-31 | 华南理工大学 | 一种含六价铬废渣提取回收铬的脱毒处理方法 |
CN106011482A (zh) * | 2016-06-30 | 2016-10-12 | 华南理工大学 | 一种铬渣的铬资源回收和脱毒处理方法 |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2011045755A1 (en) * | 2009-10-13 | 2011-04-21 | Petrus Hendrik Ferreira Bouwer | Ferrochrome alloy production |
JP5436302B2 (ja) * | 2010-03-29 | 2014-03-05 | 日新製鋼株式会社 | 含クロム溶銑およびスラグの処理方法 |
KR101435282B1 (ko) | 2012-01-31 | 2014-09-01 | 현대제철 주식회사 | 슬래그 환원 방법 |
CN103602781B (zh) * | 2013-11-17 | 2015-03-25 | 山西太钢不锈钢股份有限公司 | 一种降低不锈钢冶炼过程电弧炉渣中氧化铬的方法 |
CN104561602B (zh) * | 2015-01-28 | 2017-09-19 | 牛强 | 硅铁浴梯级还原硅热法炼镁联产含铬铁合金液的方法 |
JP6451462B2 (ja) * | 2015-04-01 | 2019-01-16 | 新日鐵住金株式会社 | クロム含有スラグからのクロム回収方法 |
CN104789736B (zh) * | 2015-05-18 | 2017-01-11 | 安徽富凯特材有限公司 | 一种降低电弧炉渣中铬元素的方法 |
CN108384961B (zh) * | 2018-04-11 | 2019-12-24 | 武汉科技大学 | 一种铝铬渣无害化处理的方法 |
CN109628688A (zh) * | 2018-12-29 | 2019-04-16 | 钢铁研究总院 | 一种不锈钢渣中铬的在线解毒处理方法 |
FI20195153A1 (en) * | 2019-03-01 | 2020-09-02 | Outokumpu Oy | Utilization of metal and metal oxide-containing sidestreams using arc furnace technology |
WO2020201869A1 (en) * | 2019-04-01 | 2020-10-08 | Sabic Global Technologies B.V. | Method for recycling chromium oxide and forming chromium- alloy steel |
BR112021020782A2 (pt) * | 2019-04-19 | 2021-12-14 | Nippon Steel Corp | Método para produzir ferro fundido contendo cromo |
CN113710819B (zh) * | 2019-04-22 | 2022-08-16 | 日本制铁株式会社 | 含铬铁液的制造方法 |
CN114561540B (zh) * | 2022-04-14 | 2024-06-07 | 江苏大学 | 一种高效提取与分离回收不锈钢渣中铬的方法 |
WO2024127339A1 (en) | 2022-12-16 | 2024-06-20 | Danieli & C. Officine Meccaniche S.P.A. | Process and plant for slag treatment |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR20020014821A (ko) * | 1999-06-23 | 2002-02-25 | 추후제출 | 산화 크롬 함유 슬래그로부터의 크롬 금속 재생 방법 |
KR100382311B1 (ko) | 1998-09-28 | 2003-07-22 | 주식회사 포스코 | 분체탄소취입에의한스테인레스강슬래그중의유가금속회수방법 |
KR100408133B1 (ko) | 1996-12-24 | 2004-03-30 | 주식회사 포스코 | 스테인레스강의정련방법 |
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US2416179A (en) * | 1944-12-16 | 1947-02-18 | Reynolds Metals Co | Method of fluidizing slag |
US3893846A (en) * | 1972-07-05 | 1975-07-08 | Aikoh Co | Slag forming agent for steel making |
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JP2000144272A (ja) * | 1998-10-30 | 2000-05-26 | Sumitomo Metal Ind Ltd | 含クロム鋼の溶解、精錬時におけるクロム、鉄回収方法 |
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JP2004511659A (ja) * | 2000-10-18 | 2004-04-15 | エス・エム・エス・デマーク・アクチエンゲゼルシャフト | ステンレス鋼、特にクロムを含有する特殊鋼およびクロムニッケルを含有する特殊鋼を製造するための方法 |
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2006
- 2006-12-28 KR KR20060136918A patent/KR100793591B1/ko active IP Right Grant
-
2007
- 2007-12-19 JP JP2007327035A patent/JP4778501B2/ja not_active Expired - Fee Related
- 2007-12-26 US US11/964,130 patent/US20080156144A1/en not_active Abandoned
- 2007-12-26 CN CNA200710301178XA patent/CN101210288A/zh active Pending
Patent Citations (3)
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KR100408133B1 (ko) | 1996-12-24 | 2004-03-30 | 주식회사 포스코 | 스테인레스강의정련방법 |
KR100382311B1 (ko) | 1998-09-28 | 2003-07-22 | 주식회사 포스코 | 분체탄소취입에의한스테인레스강슬래그중의유가금속회수방법 |
KR20020014821A (ko) * | 1999-06-23 | 2002-02-25 | 추후제출 | 산화 크롬 함유 슬래그로부터의 크롬 금속 재생 방법 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105907991A (zh) * | 2016-06-30 | 2016-08-31 | 华南理工大学 | 一种含六价铬废渣提取回收铬的脱毒处理方法 |
CN106011482A (zh) * | 2016-06-30 | 2016-10-12 | 华南理工大学 | 一种铬渣的铬资源回收和脱毒处理方法 |
Also Published As
Publication number | Publication date |
---|---|
US20080156144A1 (en) | 2008-07-03 |
JP2008163463A (ja) | 2008-07-17 |
JP4778501B2 (ja) | 2011-09-21 |
CN101210288A (zh) | 2008-07-02 |
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