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)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Manufacture And Refinement Of Metals (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 |
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 |
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 |
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)
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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 |
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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 |
TW202039868A (zh) * | 2019-04-19 | 2020-11-01 | 日商日本製鐵股份有限公司 | 含鉻熔鐵之製造方法 |
TW202039867A (zh) * | 2019-04-22 | 2020-11-01 | 日商日本製鐵股份有限公司 | 含鉻熔鐵之製造方法 |
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)
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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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US3893846A (en) * | 1972-07-05 | 1975-07-08 | Aikoh Co | Slag forming agent for steel making |
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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 CN CNA200710301178XA patent/CN101210288A/zh active Pending
- 2007-12-26 US US11/964,130 patent/US20080156144A1/en not_active Abandoned
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 |
JP4778501B2 (ja) | 2011-09-21 |
CN101210288A (zh) | 2008-07-02 |
JP2008163463A (ja) | 2008-07-17 |
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