BR9006396A - Processo para a producao de acido cromico - Google Patents

Processo para a producao de acido cromico

Info

Publication number
BR9006396A
BR9006396A BR909006396A BR9006396A BR9006396A BR 9006396 A BR9006396 A BR 9006396A BR 909006396 A BR909006396 A BR 909006396A BR 9006396 A BR9006396 A BR 9006396A BR 9006396 A BR9006396 A BR 9006396A
Authority
BR
Brazil
Prior art keywords
production
chromic acid
chromic
acid
Prior art date
Application number
BR909006396A
Other languages
English (en)
Inventor
Norbert Loenhoff
Ludwig Schmidt
Hans-Dieter Block
Rainer Weber
Original Assignee
Bayer Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bayer Ag filed Critical Bayer Ag
Publication of BR9006396A publication Critical patent/BR9006396A/pt

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
    • C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
    • C25C1/06—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese
    • C25C1/10—Electrolytic production, recovery or refining of metals by electrolysis of solutions or iron group metals, refractory metals or manganese of chromium or manganese
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/02—Oxides or hydrates thereof
    • C01G37/033—Chromium trioxide; Chromic acid
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
    • C25B1/00—Electrolytic production of inorganic compounds or non-metals
    • C25B1/01—Products
    • C25B1/22—Inorganic acids

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
  • Removal Of Specific Substances (AREA)
BR909006396A 1989-12-16 1990-12-14 Processo para a producao de acido cromico BR9006396A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3941570 1989-12-16

Publications (1)

Publication Number Publication Date
BR9006396A true BR9006396A (pt) 1991-09-24

Family

ID=6395582

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909006396A BR9006396A (pt) 1989-12-16 1990-12-14 Processo para a producao de acido cromico

Country Status (8)

Country Link
US (1) US5181994A (pt)
EP (1) EP0433748B1 (pt)
JP (1) JP3043438B2 (pt)
BR (1) BR9006396A (pt)
CA (1) CA2032369A1 (pt)
DE (1) DE59003697D1 (pt)
ES (1) ES2046655T3 (pt)
ZA (1) ZA9010064B (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0879300B1 (de) * 1996-02-02 2002-12-18 Max-Planck-Gesellschaft Zur Förderung Der Wissenschaften E.V. Verwendung von primern für universelle fingerprint-analysen
US6294329B1 (en) 1996-02-02 2001-09-25 Max-Planck-Gesellschaft Zur Forderung Der Wissenschaften E.V. Use of primers for universal fingerprint analysis
US6063252A (en) * 1997-08-08 2000-05-16 Raymond; John L. Method and apparatus for enriching the chromium in a chromium plating bath
KR100401987B1 (ko) * 1998-12-16 2003-12-18 주식회사 포스코 6가 크롬함유 폐액을 이용한 크롬산 제조방법
GB2399349A (en) * 2003-03-13 2004-09-15 Kurion Technologies Ltd Regeneration of chromic acid etching and pickling baths
CN100528759C (zh) * 2007-01-26 2009-08-19 湖南佳飞新材料有限公司 一种从碳素铬铁中生产三氧化二铬和草酸亚铁的方法
CN105648224B (zh) * 2016-03-25 2017-08-01 大连理工大学 一种铬提取和有害废物治理回收并制备铬化合物的方法
CN107587156B (zh) * 2017-09-07 2019-06-14 中国科学院青海盐湖研究所 利用铬铁制备铬酸酐的方法
CN107585788B (zh) * 2017-09-07 2019-06-14 中国科学院青海盐湖研究所 利用铬铁制备氧化铬绿的方法
CN107587154B (zh) * 2017-09-07 2019-06-14 中国科学院青海盐湖研究所 利用铬铁制备氧化铁红的方法
CN114921655B (zh) * 2022-05-30 2023-12-01 厦门钨业股份有限公司 一种钨钴废渣的回收方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA739447A (en) * 1966-07-26 W. Carlin William Electrolytic production of chromic acid
DE371222C (de) * 1921-02-19 1923-03-13 Otto Nydegger Dr Verfahren zur Darstellung von festem Chromsaeureanhydrid
US3790456A (en) * 1972-02-16 1974-02-05 Allied Chem Method of extracting and recovering chromium values from chromite ore
DE2310622A1 (de) * 1973-03-02 1974-09-12 Basf Ag Diaphragmenzelle fuer die herstellung von schwefelsauren chromsaeureloesungen
US4273628A (en) * 1979-05-29 1981-06-16 Diamond Shamrock Corp. Production of chromic acid using two-compartment and three-compartment cells
FI61855C (fi) * 1980-08-05 1982-10-11 Outokumpu Oy Foerfarande foer framstaellning av en jaernfri krom(iii)foerening
JPS6247436A (ja) * 1985-08-26 1987-03-02 Toyo Soda Mfg Co Ltd 高純度金属クロムの製造法

Also Published As

Publication number Publication date
EP0433748A1 (de) 1991-06-26
JPH06173052A (ja) 1994-06-21
ZA9010064B (en) 1991-10-30
ES2046655T3 (es) 1994-02-01
DE59003697D1 (de) 1994-01-13
CA2032369A1 (en) 1991-06-17
JP3043438B2 (ja) 2000-05-22
EP0433748B1 (de) 1993-12-01
US5181994A (en) 1993-01-26

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Legal Events

Date Code Title Description
FB36 Technical and formal requirements: requirement - article 36 of industrial property law
FF Decision: intention to grant
FG Letter patent granted
B21A Patent or certificate of addition expired [chapter 21.1 patent gazette]

Free format text: PATENTE EXTINTA EM 14/12/2010