ES2179595T3 - Procedimiento de carburacion en fase gaseosa para la fabricacion de polvo de wc puro. - Google Patents
Procedimiento de carburacion en fase gaseosa para la fabricacion de polvo de wc puro.Info
- Publication number
- ES2179595T3 ES2179595T3 ES99204377T ES99204377T ES2179595T3 ES 2179595 T3 ES2179595 T3 ES 2179595T3 ES 99204377 T ES99204377 T ES 99204377T ES 99204377 T ES99204377 T ES 99204377T ES 2179595 T3 ES2179595 T3 ES 2179595T3
- Authority
- ES
- Spain
- Prior art keywords
- gaseous
- carbureted
- carburation
- installation
- process temperature
- 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
- 238000000034 method Methods 0.000 title abstract 9
- 239000007792 gaseous phase Substances 0.000 title abstract 2
- 238000004519 manufacturing process Methods 0.000 title abstract 2
- 239000007789 gas Substances 0.000 abstract 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 3
- 229910052799 carbon Inorganic materials 0.000 abstract 3
- 238000009434 installation Methods 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 3
- 239000004215 Carbon black (E152) Substances 0.000 abstract 2
- 229930195733 hydrocarbon Natural products 0.000 abstract 2
- 150000002430 hydrocarbons Chemical class 0.000 abstract 2
- 230000001681 protective effect Effects 0.000 abstract 2
- 238000002441 X-ray diffraction Methods 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000000428 dust Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 239000008246 gaseous mixture Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 abstract 1
- 239000012071 phase Substances 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 abstract 1
- 229910052721 tungsten Inorganic materials 0.000 abstract 1
- 239000010937 tungsten Substances 0.000 abstract 1
- 229910001930 tungsten oxide Inorganic materials 0.000 abstract 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/90—Carbides
- C01B32/914—Carbides of single elements
- C01B32/949—Tungsten or molybdenum carbides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2004/00—Particle morphology
- C01P2004/60—Particles characterised by their size
- C01P2004/62—Submicrometer sized, i.e. from 0.1-1 micrometer
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Powder Metallurgy (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
Procedimiento de carburación en fase gaseosa para la fabricación de un polvo de WC de grano fino que no presenta fases extrañas detectables en un análisis por difracción de rayos X, con un tamaño medio de grano primario > 0,2 m y < 5 m, un grado de carburación > 96 % y un contenido en carbono libre < 0,1 % en peso, en instalaciones para reacciones en capa turbulenta, preferentemente en una instalación de lecho fluidizado, partiendo de polvo no granulado fluido que contiene wolframio u óxido de wolframio y presenta un tamaño medio de grano d50 > 10 m como material a carburar y de gas de proceso con contenido en carbono en forma de una mezcla gaseosa de COx/H2, siendo X = 1 y/o 2, o una mezcla de hidrocarburo gaseoso y H2, eventualmente con pequeñas proporciones de vapor de H2O, caracterizado porque el material a carburar se lleva de forma continua, en un único paso, a una temperatura de proceso de > 900ºC a 1200ºC a una velocidad de calentamiento habitual de 1ºC a 50ºC por minuto bajo gas protector, porque cuando se alcanza la temperatura de proceso se cambia la atmósfera gaseosa en la instalación de gas protector por gas de proceso, porque el gas de proceso alimentado consta de 10 a 100 % en vol. de COx, siendo el resto H2, o también de 0,1 a 5 % en vol. de hidrocarburo gaseoso, siendo el resto H2, y posee al mismo tiempo, durante todo el proceso y a la temperatura de proceso, una actividad de carbono ac < 1 y lo más próxima posible a 1 en la zona del material a carburar en la instalación.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT0086398U AT3064U1 (de) | 1998-12-28 | 1998-12-28 | Gaskarburierungsverfahren zur herstellung von reinem wc-pulver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES2179595T3 true ES2179595T3 (es) | 2003-01-16 |
Family
ID=3501552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES99204377T Expired - Lifetime ES2179595T3 (es) | 1998-12-28 | 1999-12-17 | Procedimiento de carburacion en fase gaseosa para la fabricacion de polvo de wc puro. |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6447742B1 (es) |
| EP (1) | EP1016624B1 (es) |
| JP (1) | JP2000203825A (es) |
| AT (2) | AT3064U1 (es) |
| DE (1) | DE59902109D1 (es) |
| ES (1) | ES2179595T3 (es) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT410939B (de) * | 2000-12-20 | 2003-08-25 | Treibacher Ind Ag | Verfahren zur herstellung von wolframcarbid |
| CN1289392C (zh) * | 2001-07-30 | 2006-12-13 | 三菱麻铁里亚尔株式会社 | 微粒碳化钨粉末的制造方法及粉末 |
| KR100494976B1 (ko) * | 2002-08-29 | 2005-06-13 | 한국기계연구원 | 상압 기상반응법에 의한 나노 ｗｃ계 분말의 제조방법 |
| KR100586852B1 (ko) * | 2002-11-12 | 2006-06-07 | 학교법인 영남학원 | 산화텡스텐의 환원-탄화공정의 효율개선방법 |
| DE10354543B3 (de) * | 2003-11-21 | 2005-08-04 | H.C. Starck Gmbh | Dualphasenhartstoff, Verfahren zu seiner Herstellung und dessen Verwendung |
| CN103738963B (zh) * | 2009-11-16 | 2015-07-22 | 江西稀有稀土金属钨业集团有限公司 | 一种超细碳化钨粉末的制备方法 |
| KR101688524B1 (ko) | 2010-07-30 | 2016-12-22 | 삼성전자주식회사 | 연료전지용 전극촉매, 이 전극촉매를 포함하는 막 전극 접합체와 연료전지, 및 연료전지용 전극촉매의 제조방법 |
| JP5979664B2 (ja) * | 2012-07-30 | 2016-08-24 | 国立研究開発法人物質・材料研究機構 | シリコン結晶鋳造炉 |
| CN103818906B (zh) * | 2014-01-29 | 2016-08-17 | 浙江工业大学 | 碳阻超细纳米碳化钨材料及其制备方法和应用 |
| US9992917B2 (en) | 2014-03-10 | 2018-06-05 | Vulcan GMS | 3-D printing method for producing tungsten-based shielding parts |
| CN104181180B (zh) * | 2014-09-09 | 2016-06-15 | 株洲硬质合金集团有限公司 | 一种超粗颗粒wc粉末内在质量缺陷的检验方法 |
| JP2016194152A (ja) * | 2015-03-31 | 2016-11-17 | Ｊｘ金属株式会社 | タングステン酸溶液の製造方法 |
Family Cites Families (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1237494A (fr) * | 1959-01-06 | 1960-07-29 | Gen Electric | Perfectionnements apportés aux procédés pour la production de carbures de molybdène et de tungstène |
| JPS5466400A (en) * | 1977-11-05 | 1979-05-28 | Nippon Shinkinzoku Kk | Manufacture of fine tungsten carbide powder |
| JPS57191216A (en) * | 1981-05-22 | 1982-11-25 | Hitachi Metals Ltd | Preparation of nonoxide powder |
| JPS59184719A (ja) * | 1983-04-04 | 1984-10-20 | Hitachi Metals Ltd | Ｗｃ粉末の製造方法 |
| GB8708604D0 (en) * | 1987-04-10 | 1987-05-13 | Grieveson P | Making carbides of high-melting metals |
| JPH0643243B2 (ja) * | 1988-03-10 | 1994-06-08 | セントラル硝子株式会社 | タングステンカーバイトの製造方法 |
| DD290859A5 (de) * | 1988-11-11 | 1991-06-13 | Tu Dresden,De | Verfahren zur herstellung von elektrokatalytisch aktiven wolframcarbid |
| JPH0723208B2 (ja) * | 1990-01-12 | 1995-03-15 | 東京タングステン株式会社 | 回転炉を用いたｗｃ粉の製造方法 |
| JPH07500804A (ja) | 1991-08-07 | 1995-01-26 | ラットジャーズ，ザ ステート ユニバーシティ オブ ニュージャージー | ナノフェイズＷＣ−Ｃｏ粉末製造用炭素熱反応プロセス |
| JP3390834B2 (ja) * | 1991-11-20 | 2003-03-31 | オーエムジー・アメリカズ・インコーポレーテツド | 微粒状炭化タングステンの低温合成方法 |
| JP3063340B2 (ja) * | 1991-12-02 | 2000-07-12 | 三菱マテリアル株式会社 | 微細なタングステン系炭化物粉末の製造法 |
| JP3102167B2 (ja) * | 1992-05-27 | 2000-10-23 | 三菱マテリアル株式会社 | 炭化タングステン基超硬合金製造用微細複合炭化物粉末の製造法 |
| FR2718727B1 (fr) * | 1994-04-18 | 1996-07-12 | Rhone Poulenc Chimie | Carbure de tungstène non steochiométrique. |
| AT403775B (de) | 1995-10-31 | 1998-05-25 | Plansee Ag | Verfahren zur reduktion von metallverbindungen |
| JP2990655B2 (ja) * | 1996-05-21 | 1999-12-13 | 東京タングステン株式会社 | 複合炭化物粉末及びその製造方法 |
| US5919428A (en) * | 1996-12-05 | 1999-07-06 | Nanodyne Incorporated | Method of forming tungsten carbide particles |
| CA2221432A1 (en) * | 1996-12-05 | 1998-06-05 | Li Wu | Method of forming metal carbides and metal carbide composites |
| DE19852459A1 (de) * | 1998-11-13 | 2000-05-18 | Starck H C Gmbh Co Kg | Verfahren zur Herstellung von Wolframkarbiden durch Gasphasenkarburierung |
-
1998
- 1998-12-28 AT AT0086398U patent/AT3064U1/de not_active IP Right Cessation
-
1999
- 1999-12-14 US US09/461,493 patent/US6447742B1/en not_active Expired - Fee Related
- 1999-12-17 ES ES99204377T patent/ES2179595T3/es not_active Expired - Lifetime
- 1999-12-17 DE DE59902109T patent/DE59902109D1/de not_active Expired - Fee Related
- 1999-12-17 AT AT99204377T patent/ATE221026T1/de not_active IP Right Cessation
- 1999-12-17 EP EP99204377A patent/EP1016624B1/de not_active Expired - Lifetime
- 1999-12-24 JP JP11367949A patent/JP2000203825A/ja active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| DE59902109D1 (de) | 2002-08-29 |
| EP1016624A1 (de) | 2000-07-05 |
| EP1016624B1 (de) | 2002-07-24 |
| JP2000203825A (ja) | 2000-07-25 |
| US6447742B1 (en) | 2002-09-10 |
| ATE221026T1 (de) | 2002-08-15 |
| AT3064U1 (de) | 1999-09-27 |
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