TW499485B - Method for dechroming and or denickelifying liquid slags - Google Patents
Method for dechroming and or denickelifying liquid slags Download PDFInfo
- Publication number
- TW499485B TW499485B TW90101718A TW90101718A TW499485B TW 499485 B TW499485 B TW 499485B TW 90101718 A TW90101718 A TW 90101718A TW 90101718 A TW90101718 A TW 90101718A TW 499485 B TW499485 B TW 499485B
- Authority
- TW
- Taiwan
- Prior art keywords
- slag
- reduction
- oxide
- carbon
- denickelifying
- Prior art date
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
- 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
- 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
- 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
- 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
- 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
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Processing Of Solid Wastes (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Removal Of Specific Substances (AREA)
Description
499485 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明(1 [發明領域] 本發明係有關一種使液態礦渣或礦渣混合物及粉塵除 鉻及/或除鎳之方法,其中將液態礦渣裝填於金屬浴(特別 是鐵浴)中,並利用饋入碳或碳載體予以還原。 [先前技藝說明] 特殊鋼鐵或鉻鐵製造中得到的煉鋼廠液態礦渣,視其 來源及,特別是’鋼鐵製造中所用的廢料摻合物部份及組 成而定’最重要的為含有相當高量的氧化鉻,也發現相當 高量之氧化錳類。在一些鋼鐵礦渣中,甚至觀察到相當高 含量的鎳及相當高含量的飢。於具有相當高釩含量的鋼鐵 礦渣之情形下,EP 770 149已建議在使用碳載體之第一還 原程序後,於各別連續排列之還原轉化器中,使用具有較 高還原電位的還原劑回收釩。欲達此目的,首先,將所有 鉻及錳利用碳熱還原(reduced carbothermally),於金屬浴 上長時間處理礦渣,並於該金屬浴中注入碳載體,舉例而 言,如,甲烷氣體。由於所建議的處理時間相當長,因此, 為了維持需要的溫度,必須消耗相當量引入之碳。 使用各別還原反應器(通常也各別加熱)分離飢時,其 經濟源來自所回收釩之價值,因此自然只有在釩存在相當 尚量時’方經濟有效。如果,首先,設想儘可能大量地使 鋼鐵礦渣除鉻,則將包括相當長的處理時間,因此於已知 之操作模式中將包括相當高之熱損失。 [發明概述] 本發明之目的在於增進先前已界定之方法至即使無法 尽紙m尺度適用中國國豕標準(CNS)A4規格(21〇 x 297公釐) 91720 --------*-----裝--------訂------------r (請先閱讀背面之注咅?事項再填寫本頁)
J J 經濟部智慧財產局員工消費合作社印製 Α7 ^ 五、發明說明(2 ) 確保回收印貴金屬原料之經濟信譽,仍得以於整個處理時 間同時還原下實現安全除鉻之程度。為了達成此目的,根 據本發明之方法主要包括於金屬浴中饋入碳,直到礦渣之 ^及/或Nl氧化物含量降低至介於〇 8重量%及〇 2重量% 間之值方告完成;在礦渣達到前述以氧化物含量範圍時, 即添加具有較高還原電位之還原劑,舉例而言,如,A卜 ca、Si、Fe-Si或Ca-Si,使Cr及/或Ni氧化物含量降低至 0.15重量%以下,較佳為〇 〇8重量%以下。 [發明詳細說明] 因此,根據本發明之方法係僅使用單一轉化器予以進 行,其中,由於使用礙載體(舉例而言,如,烴類)之碳熱 還原在礦渣仍具有相當高鉻或氧化物含量之時間點已 口 #止(通常’由於此等礦渣不能直接作為水泥研磨添加劑 之用而不被接受),因此實際上縮短處理時間,及由於在達 到此等前述且相當高鉻及/或Ni氧化物含量時,即立刻於 相同轉化器中添加具有較高還原電位之還原劑,因此得以 於相當短的時間内完成本方法,並將鉻及/或Ni氧化物含 It全地帶至前述界限值以下。利用此等逐步還原法當然 也得以將礦渣中其他特殊鋼鐵附隨元素,舉例而言,如, 鉬或飢,降低至非臨界值。 在這方面,根據本發明之方法,係有利地進行以達成 Fe-Si之添加量於範圍在3至15公斤/噸礦渣,較佳為6至 1 〇公斤/噸礦渣。若礦渣中含有可被此還原劑還原的其他 物質,舉例而言,如,氧化釩、氧化錳、氧化鎳或氧化鉬, r Ϊ;---Μ--------^---------^^1 (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 2 91720 A7 A7 經濟部智慧財產局員工消費合作社印製 r ------— B7 _ L、發明說明(3 ) " - ㈣於此方法步驟中#制時被還原入浴令。 碳熱還原結果產生的還原礦渣與接著以入之還原劑反 古、目:緩慢’根據本發明較佳之進一步開發,若在添加具 有較高還原電位之還原劑後,使浴中湧入惰性氣體,則其 反應速度及’特別是,還原動力學可實質上有所增進。由 於庄入的惰性氣體(可由如氮氣或氬氣組成)發揮攪拌作 用’實際上加速該反應而可於極短的處理時間獲得所需之 氧化絡最終含量。 一般而言’根據本發明之方法係以第一碳熱還原期間 為15至30分鐘,第二還原期間為3至分鐘之方式有利 地進行。 下文將藉由具體實施例更詳細說明本發明。 [具體實施例] 於轉化器中,將具有下文所示管理分析值之3噸液態 礦渣裝填於10噸生鐵上: 鋼鐵礦渣 重量% CaO 47.8 Si〇,_ 26.3 Al,〇3 5.9 MgO 8.9 TiO, 1.3 FeO 1.7 MnO 1.4 Cr,0, 6.7 利用同時裝填碳及氧隨後可將該等金屬氧化物含量降 _r I----裝--------訂------------Γ (請先閱讀背面之注意事項再填寫本頁) 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 3 91720 499485 Α7 Β7 經濟部智慧財產局員工消費合作社印製 五、發明說明(4 低至下述含量
然後,以5分鐘的時間,添加3〇公斤矽鐵並於浴中注 入55 Nm3氮氣。溶於鐵浴中的矽之還原效應產生下述最終 礦潰組成: 強列:番EE; 4么#成冰 --------- —— slor—- 重量% μ ΪΊΤό 一 35.1 ~ 12.8 MgcT^- 7.5 tT〇^^^— 1.1 ^-- 0 8 Un〇^-- \J m CJ 0.4 -1_0,07 根據本發明之方法得以於一個轉化器中進行整個二階 段還原程序’其中經2〇分鐘處理時間後,碳熱反應終了 時’氧化鉻含量脫離原來的6.7重量%而成為〇·3重量%。 於接著5分鐘之石夕熱還原(siiicothermal reduction)後’氧 化鉻含量可從0.3重量%降至〇·〇7重量0/〇。由於處理時間 相當短,因而可實質降低熱損失,且饋入之碳載體可於還 原反應中高度運用。 I 11. ^^壯衣--------訂------------^ ί請先閱讀背面之注音?事項再填寫本頁} 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 4 91720
Claims (1)
- 5 8949 年 經濟部中央標準局員工福利委員會印製本紙張尺度適用中國國家標準(CNS) Α4規格(21()Χ297公釐) 1 91720
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT632000 | 2000-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
TW499485B true TW499485B (en) | 2002-08-21 |
Family
ID=3480533
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW90101718A TW499485B (en) | 2000-01-28 | 2001-01-20 | Method for dechroming and or denickelifying liquid slags |
Country Status (24)
Country | Link |
---|---|
US (1) | US6855189B2 (zh) |
EP (1) | EP1252347B1 (zh) |
JP (1) | JP3869270B2 (zh) |
KR (1) | KR100603165B1 (zh) |
CN (1) | CN1195881C (zh) |
AR (1) | AR027283A1 (zh) |
AT (1) | ATE248236T1 (zh) |
AU (1) | AU772799B2 (zh) |
BR (1) | BR0107890B1 (zh) |
CA (1) | CA2398352A1 (zh) |
CZ (1) | CZ298077B6 (zh) |
DE (1) | DE50100554D1 (zh) |
ES (1) | ES2206396T3 (zh) |
HU (1) | HUP0203824A2 (zh) |
MX (1) | MXPA02007084A (zh) |
NZ (1) | NZ519831A (zh) |
PL (1) | PL194792B1 (zh) |
PT (1) | PT1252347E (zh) |
RU (1) | RU2237732C2 (zh) |
SK (1) | SK286014B6 (zh) |
TW (1) | TW499485B (zh) |
UA (1) | UA72297C2 (zh) |
WO (1) | WO2001055461A1 (zh) |
ZA (1) | ZA200205170B (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2864074B1 (fr) * | 2003-12-18 | 2006-05-19 | Lafarge Sa | Composition minerale hydraulique et son procede de fabrication, produits cimentaires et liants hydrauliques contenant une telle composition |
MXPA06012456A (es) * | 2004-05-18 | 2007-03-30 | Holcim Ltd | Metodo para reducir cr de escorias metalurgicas que contienen cr. |
AU2006292224B2 (en) | 2005-09-19 | 2013-08-01 | Histogenics Corporation | Cell-support matrix and a method for preparation thereof |
CN100587086C (zh) * | 2007-09-06 | 2010-02-03 | 昆明理工大学 | 利用可燃物对有色金属铜渣/镍渣进行改性和制备优质燃料的方法 |
JP5191861B2 (ja) * | 2008-10-28 | 2013-05-08 | Jfeミネラル株式会社 | セメント原料用スラグの製造方法 |
US10077420B2 (en) | 2014-12-02 | 2018-09-18 | Histogenics Corporation | Cell and tissue culture container |
CN110029220B (zh) * | 2019-04-25 | 2020-02-04 | 北京科技大学 | 一种两步法还原氧化铬制备金属铬粉的方法 |
FI20195830A1 (en) * | 2019-09-30 | 2021-03-31 | Outokumpu Oy | REDUCTION OVEN PARTITION SOLUTION |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
LU62386A1 (zh) * | 1971-01-08 | 1972-08-23 | ||
AT327569B (de) * | 1972-02-15 | 1976-02-10 | Graenges | Verfahren zur vollstandigen, okonomischen und umweltschutzenden behandlung von metallurgischen schlacken |
US4001012A (en) * | 1973-11-28 | 1977-01-04 | United States Steel Corporation | Method of producing stainless steel |
JPS53117601A (en) * | 1977-03-23 | 1978-10-14 | Sumitomo Metal Ind Ltd | Recovering method for valuable metals in stainless steel slag |
JPS54158313A (en) | 1978-06-03 | 1979-12-14 | Nippon Steel Corp | Chromium removing method for chromium-containing slag |
ATE108835T1 (de) * | 1989-06-02 | 1994-08-15 | Cra Services | Herstellung von ferrolegierung in einem schmelzbadreaktor. |
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 |
HRP970303B1 (en) * | 1996-06-05 | 2002-06-30 | Holderbank Financ Glarus | Method for making pozzolans, synthetic blast-furnance slag, belite or alite clinkers, and pig-iron alloys, from oxidic slag and a device for implementing this method |
AT407263B (de) * | 1999-04-22 | 2001-02-26 | Holderbank Financ Glarus | Verfahren zum aufarbeiten von stahlschlacken |
JP2003502504A (ja) * | 1999-06-23 | 2003-01-21 | エスエムエス・デマーク・アクチエンゲゼルシャフト | 酸化クロム含有スラグから金属クロムを回収するための方法 |
-
2001
- 2001-01-18 KR KR20027009669A patent/KR100603165B1/ko not_active IP Right Cessation
- 2001-01-18 HU HU0203824A patent/HUP0203824A2/hu unknown
- 2001-01-18 SK SK965-2002A patent/SK286014B6/sk not_active IP Right Cessation
- 2001-01-18 WO PCT/AT2001/000012 patent/WO2001055461A1/de active IP Right Grant
- 2001-01-18 EP EP20010901012 patent/EP1252347B1/de not_active Expired - Lifetime
- 2001-01-18 NZ NZ51983101A patent/NZ519831A/xx unknown
- 2001-01-18 DE DE50100554T patent/DE50100554D1/de not_active Expired - Lifetime
- 2001-01-18 RU RU2002123055A patent/RU2237732C2/ru not_active IP Right Cessation
- 2001-01-18 PL PL356341A patent/PL194792B1/pl not_active IP Right Cessation
- 2001-01-18 MX MXPA02007084A patent/MXPA02007084A/es active IP Right Grant
- 2001-01-18 CZ CZ20022814A patent/CZ298077B6/cs not_active IP Right Cessation
- 2001-01-18 ES ES01901012T patent/ES2206396T3/es not_active Expired - Lifetime
- 2001-01-18 CA CA 2398352 patent/CA2398352A1/en not_active Abandoned
- 2001-01-18 BR BR0107890A patent/BR0107890B1/pt not_active IP Right Cessation
- 2001-01-18 UA UA2002075483A patent/UA72297C2/uk unknown
- 2001-01-18 US US10/182,028 patent/US6855189B2/en not_active Expired - Lifetime
- 2001-01-18 AU AU26524/01A patent/AU772799B2/en not_active Ceased
- 2001-01-18 PT PT01901012T patent/PT1252347E/pt unknown
- 2001-01-18 AT AT01901012T patent/ATE248236T1/de not_active IP Right Cessation
- 2001-01-18 JP JP2001554490A patent/JP3869270B2/ja not_active Expired - Fee Related
- 2001-01-18 CN CNB018040594A patent/CN1195881C/zh not_active Expired - Fee Related
- 2001-01-20 TW TW90101718A patent/TW499485B/zh not_active IP Right Cessation
- 2001-01-25 AR ARP010100313 patent/AR027283A1/es unknown
-
2002
- 2002-06-26 ZA ZA200205170A patent/ZA200205170B/en unknown
Also Published As
Publication number | Publication date |
---|---|
NZ519831A (en) | 2004-12-24 |
BR0107890B1 (pt) | 2010-09-08 |
AR027283A1 (es) | 2003-03-19 |
CA2398352A1 (en) | 2001-08-02 |
UA72297C2 (uk) | 2005-02-15 |
ZA200205170B (en) | 2003-09-29 |
EP1252347A1 (de) | 2002-10-30 |
PL356341A1 (en) | 2004-06-28 |
KR20020089331A (ko) | 2002-11-29 |
PT1252347E (pt) | 2004-01-30 |
WO2001055461A1 (de) | 2001-08-02 |
CN1396961A (zh) | 2003-02-12 |
DE50100554D1 (de) | 2003-10-02 |
BR0107890A (pt) | 2002-11-19 |
JP2003520900A (ja) | 2003-07-08 |
US6855189B2 (en) | 2005-02-15 |
US20030075019A1 (en) | 2003-04-24 |
ATE248236T1 (de) | 2003-09-15 |
HUP0203824A2 (en) | 2003-04-28 |
MXPA02007084A (es) | 2004-09-06 |
JP3869270B2 (ja) | 2007-01-17 |
AU2652401A (en) | 2001-08-07 |
KR100603165B1 (ko) | 2006-07-24 |
RU2237732C2 (ru) | 2004-10-10 |
RU2002123055A (ru) | 2004-02-20 |
ES2206396T3 (es) | 2004-05-16 |
EP1252347B1 (de) | 2003-08-27 |
CZ298077B6 (cs) | 2007-06-13 |
SK286014B6 (sk) | 2008-01-07 |
SK9652002A3 (en) | 2003-03-04 |
PL194792B1 (pl) | 2007-07-31 |
CN1195881C (zh) | 2005-04-06 |
AU772799B2 (en) | 2004-05-06 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
TW499485B (en) | Method for dechroming and or denickelifying liquid slags | |
JP2008223095A (ja) | 高燐スラグの製造方法 | |
TW533244B (en) | Method for processing dusts or dust mixtures | |
JP4057942B2 (ja) | 極低Ti溶鋼の溶製方法 | |
JP4654886B2 (ja) | 製鋼スラグのリサイクル方法 | |
JPS6154841B2 (zh) | ||
JP2000345224A (ja) | 溶銑の脱硫方法 | |
JP4192503B2 (ja) | 溶鋼の製造方法 | |
JP2002003929A (ja) | アルミニウム滓とSiCからなる脱酸用造滓剤 | |
JPH07173520A (ja) | 含クロム溶銑および溶鋼の脱燐方法 | |
JP3272744B2 (ja) | 溶銑脱燐方法 | |
JPH09256024A (ja) | 電気アーク炉スラグの粉化防止方法 | |
JPH0611885B2 (ja) | 溶銑の同時脱珪・脱燐方法 | |
JP6731763B2 (ja) | 含クロム溶鉄の製造方法 | |
JP2000073113A (ja) | 溶鉄の脱珪方法 | |
JP3740894B2 (ja) | 溶銑の脱りん方法 | |
JP4184855B2 (ja) | 溶鋼中のCr量調整方法 | |
JPH11100608A (ja) | 溶銑の脱珪・脱硫方法 | |
JPH1121609A (ja) | マンガン鉄合金溶湯の脱珪方法 | |
JPH05287360A (ja) | 極低炭素鋼の溶製方法 | |
JPH09104913A (ja) | 高クロム溶融鉄合金の脱マンガン方法 | |
JP2004292836A (ja) | 転炉におけるMn添加方法 | |
JPS6280214A (ja) | クロム含有溶鉄の製造方法 | |
JPH05239532A (ja) | 極低炭素鋼の溶製方法 | |
JP2004099977A (ja) | 溶銑の脱珪処理方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
GD4A | Issue of patent certificate for granted invention patent | ||
MM4A | Annulment or lapse of patent due to non-payment of fees |