DE60221844D1 - Verfahren zur herstellung von körnigem metall - Google Patents
Verfahren zur herstellung von körnigem metallInfo
- Publication number
- DE60221844D1 DE60221844D1 DE60221844T DE60221844T DE60221844D1 DE 60221844 D1 DE60221844 D1 DE 60221844D1 DE 60221844 T DE60221844 T DE 60221844T DE 60221844 T DE60221844 T DE 60221844T DE 60221844 D1 DE60221844 D1 DE 60221844D1
- Authority
- DE
- Germany
- Prior art keywords
- metal
- raw material
- production
- produced
- metal oxide
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
- C21B13/105—Rotary hearth-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/10—Making spongy iron or liquid steel, by direct processes in hearth-type furnaces
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/0046—Making spongy iron or liquid steel, by direct processes making metallised agglomerates or iron oxide
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B13/00—Making spongy iron or liquid steel, by direct processes
- C21B13/008—Use of special additives or fluxing agents
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/242—Binding; Briquetting ; Granulating with binders
- C22B1/244—Binding; Briquetting ; Granulating with binders organic
- C22B1/245—Binding; Briquetting ; Granulating with binders organic with carbonaceous material for the production of coked agglomerates
-
- 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
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
-
- 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
- C22B23/00—Obtaining nickel or cobalt
-
- 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
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001183932 | 2001-06-18 | ||
JP2001183932 | 2001-06-18 | ||
JP2002007854A JP4669189B2 (ja) | 2001-06-18 | 2002-01-16 | 粒状金属鉄の製法 |
JP2002007854 | 2002-01-16 | ||
PCT/JP2002/005872 WO2002103064A1 (fr) | 2001-06-18 | 2002-06-13 | Procede de fabrication de grenaille |
Publications (2)
Publication Number | Publication Date |
---|---|
DE60221844D1 true DE60221844D1 (de) | 2007-09-27 |
DE60221844T2 DE60221844T2 (de) | 2008-05-08 |
Family
ID=26617135
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002621844 Expired - Lifetime DE60221844T2 (de) | 2001-06-18 | 2002-06-13 | Verfahren zur herstellung von körnigem metall |
Country Status (17)
Country | Link |
---|---|
US (1) | US20040154436A1 (de) |
EP (1) | EP1405924B1 (de) |
JP (1) | JP4669189B2 (de) |
KR (1) | KR100576397B1 (de) |
CN (1) | CN1516744B (de) |
AT (1) | ATE370253T1 (de) |
AU (1) | AU2002311197B2 (de) |
BR (1) | BR0205667B1 (de) |
CA (1) | CA2448381C (de) |
DE (1) | DE60221844T2 (de) |
ES (1) | ES2291473T3 (de) |
MX (1) | MXPA03011868A (de) |
PL (1) | PL199092B1 (de) |
RU (1) | RU2271395C2 (de) |
TW (1) | TW533237B (de) |
UA (1) | UA74905C2 (de) |
WO (1) | WO2002103064A1 (de) |
Families Citing this family (44)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ZA200300865B (en) * | 2001-06-18 | 2004-02-26 | Kobe Steel Ltd | Method for manufacturing metal nuggets. |
JP2003034813A (ja) * | 2001-07-24 | 2003-02-07 | Kobe Steel Ltd | 粒状金属鉄とスラグの分離促進方法 |
JP4137551B2 (ja) * | 2002-08-09 | 2008-08-20 | 日東電工株式会社 | 透明導電性基板用表面保護フィルム及び表面保護フィルム付き透明導電性基板 |
JP4167101B2 (ja) * | 2003-03-20 | 2008-10-15 | 株式会社神戸製鋼所 | 粒状金属鉄の製法 |
JP4295544B2 (ja) | 2003-04-09 | 2009-07-15 | 株式会社神戸製鋼所 | 冶金用改質炭の製造方法、ならびに冶金用改質炭を用いた還元金属および酸化非鉄金属含有スラグの製造方法 |
MX2007006786A (es) | 2004-12-07 | 2008-02-11 | Nu Iron Technology Llc | Metodo y sistema para producir trozos de hierro metalicos. |
US8470068B2 (en) * | 2004-12-07 | 2013-06-25 | Nu-Iron Technology, Llc | Method and system for producing metallic iron nuggets |
KR100628467B1 (ko) * | 2004-12-17 | 2006-09-26 | 주식회사 천지테크 | 철광석류의 강도 개선을 위한 표면 처리방법 |
US7632330B2 (en) * | 2006-03-13 | 2009-12-15 | Michigan Technological University | Production of iron using environmentally-benign renewable or recycled reducing agents |
EP2690181A1 (de) * | 2006-07-26 | 2014-01-29 | Nu-Iron Technology, Inc | Verfahren und System zur Herstellung von Eisenklumpen |
US8021460B2 (en) | 2006-07-26 | 2011-09-20 | Nu-Iron Technology, Llc | System and method for producing metallic iron nodules |
JP5194111B2 (ja) * | 2007-05-11 | 2013-05-08 | ポスコ | ニッケル含有溶鉄の製造方法 |
AU2008268694B2 (en) * | 2007-06-27 | 2011-06-23 | Kabushiki Kaisha Kobe Seiko Sho | Method for manufacturing granular metallic iron |
AU2011211415B2 (en) * | 2007-06-27 | 2012-04-12 | Kabushiki Kaisha Kobe Seiko Sho | Method for manufacturing granular metallic iron |
JP5096811B2 (ja) * | 2007-06-27 | 2012-12-12 | 株式会社神戸製鋼所 | 粒状金属鉄の製造方法 |
JP5210555B2 (ja) * | 2007-06-27 | 2013-06-12 | 株式会社神戸製鋼所 | 粒状金属鉄の製造方法 |
JP5096810B2 (ja) * | 2007-06-27 | 2012-12-12 | 株式会社神戸製鋼所 | 粒状金属鉄の製造方法 |
AU2009232786B2 (en) * | 2008-03-31 | 2013-02-21 | Nippon Steel Corporation | Producing Method of Reduced Iron |
CA2661419A1 (en) | 2008-04-03 | 2009-10-03 | Nu-Iron Technology, Llc | System and method for producing metallic iron |
JP5420935B2 (ja) * | 2008-04-09 | 2014-02-19 | 株式会社神戸製鋼所 | 粒状金属鉄の製造方法 |
JP2010111941A (ja) * | 2008-10-07 | 2010-05-20 | Kobe Steel Ltd | フェロバナジウムの製造方法 |
JP2010090431A (ja) * | 2008-10-07 | 2010-04-22 | Kobe Steel Ltd | ニッケルおよびバナジウムを含む合金鉄の製造方法 |
JP2010229525A (ja) * | 2009-03-27 | 2010-10-14 | Kobe Steel Ltd | フェロニッケルおよびフェロバナジウムの製造方法 |
JP2011252226A (ja) * | 2010-05-06 | 2011-12-15 | Kobe Steel Ltd | 金属鉄の製造方法 |
US8287621B2 (en) | 2010-12-22 | 2012-10-16 | Nu-Iron Technology, Llc | Use of bimodal carbon distribution in compacts for producing metallic iron nodules |
US20140060251A1 (en) * | 2011-05-04 | 2014-03-06 | Wei-Kao Lu | Process of the production and refining of low-carbon dri (direct reduced iron) |
JP5671426B2 (ja) * | 2011-08-03 | 2015-02-18 | 株式会社神戸製鋼所 | 粒状金属鉄の製造方法 |
RU2497953C2 (ru) * | 2011-12-07 | 2013-11-10 | Владимир Евгеньевич Черных | Способ получения гранулированного металлического железа |
WO2013129604A1 (ja) | 2012-02-28 | 2013-09-06 | 株式会社神戸製鋼所 | 還元鉄塊成物の製造方法 |
FR2995910A1 (fr) * | 2012-09-24 | 2014-03-28 | Mine & Ore | Procede de traitement pyrometallurgique des poussieres d'acierie issues de la fusion de ferrailles de recuperation |
JP2014167164A (ja) | 2013-02-01 | 2014-09-11 | Kobe Steel Ltd | 還元鉄の製造方法 |
JP2014167150A (ja) * | 2013-02-28 | 2014-09-11 | Kobe Steel Ltd | 還元鉄塊成物の製造方法 |
RU2532713C1 (ru) * | 2013-03-26 | 2014-11-10 | Общество с ограниченной ответственностью "ХМК-Инжиниринг" | Способ получения металлического железа |
CZ304951B6 (cs) | 2013-07-08 | 2015-02-04 | Ecofer, S.R.O. | Tavidlo pro aglomeraci, způsob výroby tavidla, aglomerační směs pro výrobu aglomerátu a použití strusek sekundární metalurgie jako tavidel pro přípravu aglomerační směsi |
EP2848299B1 (de) * | 2013-09-11 | 2019-08-14 | Primetals Technologies Austria GmbH | Verfahren und vorrichtung zur herstellung von granulaten |
JP6314781B2 (ja) * | 2014-10-06 | 2018-04-25 | 住友金属鉱山株式会社 | ニッケル酸化鉱の製錬方法 |
JP6409811B2 (ja) * | 2016-03-31 | 2018-10-24 | Jfeスチール株式会社 | クロム含有ダストのリサイクル方法 |
JP6900696B2 (ja) * | 2017-02-09 | 2021-07-07 | 住友金属鉱山株式会社 | 金属酸化物の製錬方法 |
JP6900695B2 (ja) * | 2017-02-09 | 2021-07-07 | 住友金属鉱山株式会社 | 金属酸化物の製錬方法 |
KR102020453B1 (ko) * | 2017-12-26 | 2019-09-10 | 주식회사 포스코 | 제강부산물로부터 유가금속 회수방법 |
RU2717758C1 (ru) * | 2019-09-23 | 2020-03-25 | Владимир Владимирович Вершаль | Способ получения гранулированного металлического железа |
JP2023050952A (ja) * | 2021-09-30 | 2023-04-11 | 株式会社クボタ | 溶融炉の運転方法及び溶融炉 |
KR102617450B1 (ko) * | 2022-08-31 | 2023-12-27 | (주)세중정밀 | 폐자재의 재활용 방법 |
CN116516180B (zh) * | 2023-07-04 | 2023-09-22 | 北京科技大学 | 石煤高效直接浸出提钒的方法 |
Family Cites Families (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3649249A (en) * | 1970-07-06 | 1972-03-14 | Inland Steel Co | Continuous casting slag and method of making |
US3799762A (en) * | 1971-05-17 | 1974-03-26 | Carad | Slag conditioner for iron and steel processes |
US3721547A (en) * | 1971-09-15 | 1973-03-20 | Cleveland Flux Co | Method of fluxing and fluidizing slag in a cupola |
US3704744A (en) * | 1971-10-22 | 1972-12-05 | Inland Steel Co | Slag use in continuous casting of steel |
US3926246A (en) * | 1972-09-18 | 1975-12-16 | Scm Corp | Flux for continuous casting of steel |
US3899324A (en) * | 1973-03-16 | 1975-08-12 | Scm Corp | Flux for continuous casting of steel |
CA1011955A (en) * | 1973-11-05 | 1977-06-14 | Inco Limited | Process for treatment of lateritic ores |
US4137071A (en) * | 1974-12-23 | 1979-01-30 | Ford Motor Company | Low cost method of fluidizing cupola slag (A) |
US4092159A (en) * | 1977-06-17 | 1978-05-30 | Scm Corporation | Flux for metal casting |
US4133967A (en) * | 1977-06-24 | 1979-01-09 | The United States Of America As Represented By The Secretary Of The Interior | Two-stage electric arc - electroslag process and apparatus for continuous steelmaking |
US4204864A (en) * | 1978-04-19 | 1980-05-27 | Scm Corporation | Particulate slagging composition for the continuous casting of steel |
US4290809A (en) * | 1980-08-06 | 1981-09-22 | Mobay Chemical Corporation | Raw mix flux for continuous casting of steel |
US5021086A (en) * | 1990-07-05 | 1991-06-04 | Reactive Metals And Alloys Corporation | Iron desulfurization additive and method for introduction into hot metal |
US5364447A (en) * | 1990-12-21 | 1994-11-15 | Enviroscience, Inc. | Method of recycling hazardous waste |
US5186741A (en) * | 1991-04-12 | 1993-02-16 | Zia Patent Company | Direct reduction process in a rotary hearth furnace |
CA2248273C (en) * | 1996-03-15 | 2010-05-18 | Kabushiki Kaisha Kobe Seiko Sho | Method and apparatus for making metallic iron |
US5695543A (en) * | 1996-05-10 | 1997-12-09 | D & S Technologies, Inc. | Method for metal reduction of steel waste products |
ID22491A (id) * | 1997-09-30 | 1999-10-21 | Kawasaki Steel Co | Tungku perapian putar untuk oksida peleburan dan metode pengoperasian daripadanya |
JP4159634B2 (ja) * | 1997-10-23 | 2008-10-01 | 株式会社神戸製鋼所 | 金属鉄の製法および装置 |
WO2000026420A1 (en) * | 1998-10-30 | 2000-05-11 | Midrex Technologies, Inc. | Method of producing molten iron in duplex furnaces |
JP3009661B1 (ja) * | 1999-01-20 | 2000-02-14 | 株式会社神戸製鋼所 | 還元鉄ペレットの製造方法 |
US6126718A (en) * | 1999-02-03 | 2000-10-03 | Kawasaki Steel Corporation | Method of producing a reduced metal, and traveling hearth furnace for producing same |
EP1764420B1 (de) * | 2000-03-30 | 2011-02-16 | Kabushiki Kaisha Kobe Seiko Sho | Verfahren zur Herstellung von metallischem Eisen in einem Schmelzreduktionsofen mit bewegender Sohle |
JP4757982B2 (ja) * | 2000-06-28 | 2011-08-24 | 株式会社神戸製鋼所 | 粒状金属鉄の歩留まり向上方法 |
JP4330257B2 (ja) * | 2000-08-09 | 2009-09-16 | 株式会社神戸製鋼所 | 金属鉄の製法 |
CN1288962A (zh) * | 2000-10-18 | 2001-03-28 | 具龙善 | 炼钢熔渣的凝结粉化防止剂及其制造方法和应用 |
US6648942B2 (en) * | 2001-01-26 | 2003-11-18 | Midrex International B.V. Rotterdam, Zurich Branch | Method of direct iron-making / steel-making via gas or coal-based direct reduction and apparatus |
JP4266284B2 (ja) * | 2001-07-12 | 2009-05-20 | 株式会社神戸製鋼所 | 金属鉄の製法 |
-
2002
- 2002-01-16 JP JP2002007854A patent/JP4669189B2/ja not_active Expired - Fee Related
- 2002-05-17 TW TW91110408A patent/TW533237B/zh active
- 2002-06-13 AU AU2002311197A patent/AU2002311197B2/en not_active Ceased
- 2002-06-13 MX MXPA03011868A patent/MXPA03011868A/es active IP Right Grant
- 2002-06-13 WO PCT/JP2002/005872 patent/WO2002103064A1/ja active IP Right Grant
- 2002-06-13 CN CN028121929A patent/CN1516744B/zh not_active Expired - Fee Related
- 2002-06-13 ES ES02736081T patent/ES2291473T3/es not_active Expired - Lifetime
- 2002-06-13 PL PL373812A patent/PL199092B1/pl unknown
- 2002-06-13 EP EP02736081A patent/EP1405924B1/de not_active Revoked
- 2002-06-13 AT AT02736081T patent/ATE370253T1/de not_active IP Right Cessation
- 2002-06-13 DE DE2002621844 patent/DE60221844T2/de not_active Expired - Lifetime
- 2002-06-13 RU RU2004101052A patent/RU2271395C2/ru not_active IP Right Cessation
- 2002-06-13 CA CA 2448381 patent/CA2448381C/en not_active Expired - Fee Related
- 2002-06-13 US US10/480,256 patent/US20040154436A1/en not_active Abandoned
- 2002-06-13 KR KR20037002358A patent/KR100576397B1/ko not_active IP Right Cessation
- 2002-06-13 BR BRPI0205667-4A patent/BR0205667B1/pt not_active IP Right Cessation
- 2002-06-13 UA UA2004010349A patent/UA74905C2/uk unknown
Also Published As
Publication number | Publication date |
---|---|
WO2002103064A1 (fr) | 2002-12-27 |
EP1405924A4 (de) | 2005-03-23 |
CN1516744B (zh) | 2010-04-28 |
JP2003073722A (ja) | 2003-03-12 |
TW533237B (en) | 2003-05-21 |
RU2004101052A (ru) | 2005-05-20 |
BR0205667A (pt) | 2003-07-15 |
KR20030020990A (ko) | 2003-03-10 |
PL199092B1 (pl) | 2008-08-29 |
EP1405924A1 (de) | 2004-04-07 |
UA74905C2 (uk) | 2006-02-15 |
AU2002311197B2 (en) | 2008-08-28 |
MXPA03011868A (es) | 2004-06-18 |
ES2291473T3 (es) | 2008-03-01 |
BR0205667B1 (pt) | 2011-09-06 |
US20040154436A1 (en) | 2004-08-12 |
DE60221844T2 (de) | 2008-05-08 |
RU2271395C2 (ru) | 2006-03-10 |
JP4669189B2 (ja) | 2011-04-13 |
CA2448381A1 (en) | 2002-12-27 |
EP1405924B1 (de) | 2007-08-15 |
CN1516744A (zh) | 2004-07-28 |
ATE370253T1 (de) | 2007-09-15 |
PL373812A1 (en) | 2005-09-19 |
CA2448381C (en) | 2013-01-15 |
KR100576397B1 (ko) | 2006-05-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE60221844D1 (de) | Verfahren zur herstellung von körnigem metall | |
PL2392424T3 (pl) | Sposób wytwarzania form odlewniczych do przetwarzania metali, formy odlewnicze wytworzone według tego sposobu i ich zastosowanie | |
DE60206124D1 (de) | Verfahren zur Herstellung metallisches Molybdäns | |
UA85763C2 (ru) | Способ получения титана | |
DE60329061D1 (de) | Verfahren zur Herstellung von Einsatzgut für die Produktion von schmelzflüssigem Metall und Verfahren zur Herstellung von schmelzflüssigem Metall | |
CA2636155A1 (en) | Use of an induction furnace for the production of iron from ore | |
MXPA05005934A (es) | Metodo para la produccion de cuerpos de molde, particularmente machos, moldes y alimentadores para la tecnica de la fundicion. | |
TW200500473A (en) | The method for producing magnesium alloy molding | |
WO2005098054A8 (en) | Method in connection with steel production | |
AU4844996A (en) | High-purity hard gold alloy and process for production thereof | |
EP1449822A4 (de) | Verfahren zur herstellung von trans-1,4-cyclohexandicarbonsäure | |
CN112375987A (zh) | 一种加氮耐腐蚀塑料模具钢及其制造方法 | |
NO20015874D0 (no) | Modifisert prosess for produksjon av alginat med höyt mannuronsyre-innhold | |
DE602005023167D1 (de) | Verfahren zur herstellung thermoplastischer polyamidzusammensetzungen mit erhöhtem schmelzfluss und damit hergestellte artikel | |
DE502004011740D1 (de) | Verfahren zur herstellung oberflächenmodifizierter werkstücke | |
DE60225486D1 (de) | Verfahren zur herstellung von 4'-brommethyl-2-cyanobiphenyl | |
DK1546185T3 (da) | Fremgangsmåde til fremstilling af væksthormon og antagonist deraf med lavere niveauer af isoform-urenheder deraf | |
CN107601900A (zh) | 一种光敏微晶玻璃壳及其制备方法 | |
AR036941A1 (es) | Un metodo para purificar la solucion en el procesamiento hidrometalurgico de cobre | |
DE60317795D1 (de) | Verfahren zur herstellung von katalysatoren | |
ATE321036T1 (de) | Verfahren zur herstellung 2,5-disubstituierter 3- alkylthiophenen | |
ATE233822T1 (de) | Verfahren zur stereoselektiven herstellung von substituierten cyclohexylcyanhydrinen | |
DE59205433D1 (de) | Verfahren zur Herstellung von Kupferlegierungen | |
HK1060879A1 (en) | Method for the production of 6-(4-chlorophenyl)-2,2-dimethyl-7-phenyl-2,3- dihydro-1h-pyrrolizin-5-ylacetic acid | |
CN103710490A (zh) | 3Cr2MnMoS模具钢精炼变性剂加入方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
8363 | Opposition against the patent |