TW201009089A - Method for producing a foamed slag on austenitic stainless melts in an electric arc furnace - Google Patents
Method for producing a foamed slag on austenitic stainless melts in an electric arc furnace Download PDFInfo
- Publication number
- TW201009089A TW201009089A TW098112652A TW98112652A TW201009089A TW 201009089 A TW201009089 A TW 201009089A TW 098112652 A TW098112652 A TW 098112652A TW 98112652 A TW98112652 A TW 98112652A TW 201009089 A TW201009089 A TW 201009089A
- Authority
- TW
- Taiwan
- Prior art keywords
- slag
- carbon
- oxide
- electric arc
- metal
- Prior art date
Links
- 239000002893 slag Substances 0.000 title claims abstract description 24
- 238000010891 electric arc Methods 0.000 title claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 4
- 239000000155 melt Substances 0.000 title abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 229910052751 metal Inorganic materials 0.000 claims abstract description 7
- 239000002184 metal Substances 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- 238000005187 foaming Methods 0.000 claims abstract description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 6
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 229910000480 nickel oxide Inorganic materials 0.000 claims abstract description 5
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000011230 binding agent Substances 0.000 claims abstract description 3
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 239000008188 pellet Substances 0.000 claims abstract description 3
- 239000006260 foam Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 abstract description 2
- 239000000969 carrier Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 description 4
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910000423 chromium oxide Inorganic materials 0.000 description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 229910000464 lead oxide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003541 multi-stage reaction Methods 0.000 description 1
- YEXPOXQUZXUXJW-UHFFFAOYSA-N oxolead Chemical compound [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000009993 protective function Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011343 solid material Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- 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
- C21C5/527—Charging of the electric furnace
-
- 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
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
-
- 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)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Analytical Chemistry (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)
Description
201009089 六、發明說明： 【發明所屬之技術領域】 本發明關於一種在電弧爐中於沃斯田不銹鋼熔體上產 生泡沫熔渣的方法，其中將金屬氧化物與碳之混合物加入 熔爐中，金屬氧化物係在金屬/熔渣界面上以在熔渣下的 碳還原，且所得氣體係藉由氣泡形成而引起熔渣起泡。 # 【先前技術】 在電弧爐的操作中，將進料（亦即主要爲廢料）及合 金以向下伸出至熔爐容器中的電極之電弧熔融。具泡沫狀 態的溶渣實現除了從熔體移除不想要的組份之其主要功能 以外並實現保護功能。在該狀態下，熔渣包圍在電極末端 與金屬表面之間的空間且保護熔爐的耐火襯裹免於電弧的 輻射能。因爲泡沫熔渣爲差的熱導體，所以沿著電熔爐壁 之電弧的輻射急劇下降，且據此改進引入金屬熔體的能量 在非不銹鋼或低鉻含量之鋼的例子中，泡沫熔渣係藉 由同時注入碳及氧而達成。 注入之碳在具有高鉻含量之熔體中主要作爲氧化鉻的 還原劑反應。由於熔渣中非常低的氧化鐵含量，故不可以 達成所欲之起泡程度。 根據EP 0 829 54 5 B1，將包含金屬氧化物（氧化鋅 或氧化鉛）之粉末及碳加入熔渣中，藉此達成改進。在粉 末中所含之氧化物係藉由與碳反應而還原，且藉由出現用 -5- 201009089 於起泡之一氧化碳而形成氣泡。然而，粉末的大表面積引 起非常強有力的局部受限反應。 從DE 1 03 23 5 05已知裝塡預製物（諸如小粒或煤磚 )取代粉末來達成非常受控制、均勻且逐步的反應。 然而，總是在電弧爐中熔融固體材料期間形成具有氧 化鉻濃度大於10%之熔渣時出現問題。因此極不可能使此 類型之熔渣液化及起泡至所欲之程度，因爲彼之組成物。 - 【發明內容及實施方式】 本發明的目的係提供一種允許發生熔渣起泡的方法， 甚至具有如上述之高比例的氧化鉻- 根據本發明，此目的係以預製物形式（諸如煤磚或小 粒）加入的欲裝塡之混合物含有除了氧化鎳以外並含有氧 化鐵、鐵載子、碳及必需的黏合劑來滿足。 材料之比密度及溶解時間係以達成關於大小及持久性 (duration )而言最佳泡沫形成的方式選擇。比密度較佳 @ 爲約 6.7 t/m3 » 在極活性混合物中所含之氧化鎳比例與碳產生強有力 的反應，但是因爲其形狀，亦即如小粒或煤磚，所以此反 應以受控制的方式進行，亦即不受局部限制，且以平面分 布於金屬/熔渣界面上，因爲預製物係漂浮在熔渣下。 -6-
Claims (1)
- 201009089 七、申請專利範圍： 1· 一種在電弧爐中於沃斯田不銹鋼熔體上產生泡沫 熔渣的方法，其中將金屬氧化物與碳之混合物加入熔爐中 ，金屬氧化物係在金屬/熔渣界面上以在熔渣下的碳還原 ，且所得氣體係藉由氣泡形成而引起熔渣起泡，其特徵在 於以預製物形式（諸如煤磚或小粒）加入的欲裝塡之混合 ' 物含有除了氧化鎳以外並含有氧化鐵、鐵載子、碳及必需 0 的黏合劑。 2.根據申請專利範圍第1項之方法，其中該預製物 之比密度及溶解時間係以達成關於大小及持久性（ duration)而言最佳泡沫形成的方式選擇<» 3 .根據申請專利範圍第2項之方法，其中該比密度 爲約 6.7 t/m3。201009089 四、指定代表圖： (一） 、本案指定代表圖為：無 (二） 、本代表圖之元件代表符號簡單說明：無-3- 201009089 五 本案若有化學式時，請揭示最能顯示發明特徵的化學-4-
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008028011A DE102008028011A1 (de) | 2008-06-09 | 2008-06-09 | Verfahren zur Erzeugung einer Schaumschlacke auf austenitischen Rostfreischmelzen in einem Elektrolichtbogenofen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201009089A true TW201009089A (en) | 2010-03-01 |
| TWI410500B TWI410500B (zh) | 2013-10-01 |
Family
ID=41055170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW098112652A TWI410500B (zh) | 2008-06-09 | 2009-04-16 | 在電弧爐中，於沃斯田不銹鋼熔體上產生泡沫熔渣的方法 |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US8409320B2 (zh) |
| EP (1) | EP2307580B1 (zh) |
| JP (2) | JP5509202B2 (zh) |
| KR (1) | KR20110004478A (zh) |
| CN (1) | CN102046818A (zh) |
| AU (1) | AU2009257044B2 (zh) |
| BR (1) | BRPI0912091A2 (zh) |
| CA (1) | CA2727187C (zh) |
| DE (1) | DE102008028011A1 (zh) |
| MX (1) | MX2010012709A (zh) |
| TW (1) | TWI410500B (zh) |
| UA (1) | UA97327C2 (zh) |
| WO (1) | WO2009149679A1 (zh) |
| ZA (1) | ZA201007182B (zh) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11314344B2 (en) * | 2010-12-03 | 2022-04-26 | Razer (Asia-Pacific) Pte. Ltd. | Haptic ecosystem |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3525604A (en) * | 1966-10-21 | 1970-08-25 | Edward M Van Dornick | Process for refining pelletized metalliferous materials |
| US3723098A (en) * | 1970-06-15 | 1973-03-27 | Airco Inc | Method of manufacturing iron base alloys |
| FR2753205B1 (fr) | 1996-09-12 | 1998-12-04 | Usinor Sacilor | Procede pour realiser un laitier moussant au-dessus d'un acier inoxydable en fusion dans un four electrique |
| LU90409B1 (fr) * | 1999-06-25 | 2001-01-02 | Wurth Paul Sa | Proc-d- d'optimisation du fonctionnement d'un four -lectrique du type - arc submerg- |
| US6709510B1 (en) * | 2002-11-19 | 2004-03-23 | Texas Industries, Inc. | Process for using mill scale in cement clinker production |
| DE10323505A1 (de) * | 2003-05-24 | 2004-12-09 | Sms Demag Ag | Verfahren zur Erzeugung einer Schaumschlacke auf hochchromhaltigen Schmelzen in einem Elektroofen |
| AT412349B (de) * | 2003-06-25 | 2005-01-25 | Voest Alpine Ind Anlagen | Verfahren zur herstellung einer legierten metallschmelze und erzeugungsanlage hierzu |
| DE102006004532B4 (de) | 2006-02-01 | 2014-10-09 | Sms Siemag Aktiengesellschaft | Verfahren zur Erzeugung einer Schaumschlacke in einer metallischen Schmelze |
| JP2007247033A (ja) * | 2006-03-17 | 2007-09-27 | Tohoku Univ | 酸化物の還元反応を利用した発泡金属製造方法 |
| DE102007006529A1 (de) * | 2007-02-09 | 2008-08-14 | Sms Demag Ag | Verfahren und Reduktion einer hochchromhaltigen Schlacke in einem Elektrolichtbogenofen |
-
2008
- 2008-06-09 DE DE102008028011A patent/DE102008028011A1/de not_active Withdrawn
-
2009
- 2009-04-08 JP JP2011512824A patent/JP5509202B2/ja not_active Expired - Fee Related
- 2009-04-08 KR KR1020107027472A patent/KR20110004478A/ko not_active Ceased
- 2009-04-08 BR BRPI0912091A patent/BRPI0912091A2/pt not_active Application Discontinuation
- 2009-04-08 CN CN200980116629XA patent/CN102046818A/zh active Pending
- 2009-04-08 US US12/996,930 patent/US8409320B2/en not_active Expired - Fee Related
- 2009-04-08 CA CA2727187A patent/CA2727187C/en not_active Expired - Fee Related
- 2009-04-08 EP EP09761301.2A patent/EP2307580B1/de not_active Not-in-force
- 2009-04-08 WO PCT/DE2009/000497 patent/WO2009149679A1/de not_active Ceased
- 2009-04-08 UA UAA201100236A patent/UA97327C2/ru unknown
- 2009-04-08 MX MX2010012709A patent/MX2010012709A/es active IP Right Grant
- 2009-04-08 AU AU2009257044A patent/AU2009257044B2/en not_active Ceased
- 2009-04-16 TW TW098112652A patent/TWI410500B/zh not_active IP Right Cessation
-
2010
- 2010-10-07 ZA ZA2010/07182A patent/ZA201007182B/en unknown
-
2013
- 2013-12-20 JP JP2013264632A patent/JP2014055360A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| ZA201007182B (en) | 2011-10-26 |
| US8409320B2 (en) | 2013-04-02 |
| EP2307580A1 (de) | 2011-04-13 |
| AU2009257044A1 (en) | 2009-12-17 |
| AU2009257044B2 (en) | 2013-07-11 |
| KR20110004478A (ko) | 2011-01-13 |
| CA2727187C (en) | 2012-12-11 |
| UA97327C2 (ru) | 2012-01-25 |
| WO2009149679A1 (de) | 2009-12-17 |
| MX2010012709A (es) | 2011-02-15 |
| JP5509202B2 (ja) | 2014-06-04 |
| CN102046818A (zh) | 2011-05-04 |
| JP2014055360A (ja) | 2014-03-27 |
| EP2307580B1 (de) | 2018-01-31 |
| US20110088514A1 (en) | 2011-04-21 |
| DE102008028011A1 (de) | 2009-12-10 |
| BRPI0912091A2 (pt) | 2015-10-06 |
| CA2727187A1 (en) | 2009-12-17 |
| JP2011522966A (ja) | 2011-08-04 |
| TWI410500B (zh) | 2013-10-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5094879B2 (ja) | 電気アーク炉中でのクロム含有量の多いスラグの還元方法 | |
| AU2007211649B2 (en) | Method for the production of a foamed slag in a metal bath | |
| US20130000446A1 (en) | Method for producing foamed slag on high-chromium melts in an electric furnace | |
| WO2001073136A2 (en) | Process for manufacturing molten metal iron | |
| CN105658828A (zh) | 直接从铬铁矿生产铬铁合金 | |
| Hara et al. | Continuous pig iron making by microwave heating with 12.5 kW at 2.45 GHz | |
| CN102791888B (zh) | 转炉中产生不锈钢熔体的泡沫熔渣的方法 | |
| CN117500945A (zh) | 铁团块 | |
| TW201009089A (en) | Method for producing a foamed slag on austenitic stainless melts in an electric arc furnace | |
| CN102414330A (zh) | 电弧炉中非不锈钢熔体的熔渣起泡方法 | |
| EP3601625B1 (en) | Process for preparing iron- and chrome-containing particles | |
| CN119630814A (zh) | 用于在电熔炼单元中生产熔融生铁的方法 | |
| EA016426B1 (ru) | Способ выплавки высокоуглеродистого феррохрома | |
| KR20120137414A (ko) | 스테인리스 강 제조의 ｅａｆ 기술에서 거품 슬래그 효과를 생성하기 위한 브리케트 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MM4A | Annulment or lapse of patent due to non-payment of fees |