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IT8819916A0 - Procedimento per il recupero di anidride cromica da soluzioni acquose esauste di bagni di cromatura con valorizzazione del cromo recuperato. - Google Patents

Procedimento per il recupero di anidride cromica da soluzioni acquose esauste di bagni di cromatura con valorizzazione del cromo recuperato.

Info

Publication number
IT8819916A0
IT8819916A0 IT8819916A IT1991688A IT8819916A0 IT 8819916 A0 IT8819916 A0 IT 8819916A0 IT 8819916 A IT8819916 A IT 8819916A IT 1991688 A IT1991688 A IT 1991688A IT 8819916 A0 IT8819916 A0 IT 8819916A0
Authority
IT
Italy
Prior art keywords
valorization
chromic
dioxide
recovery
procedure
Prior art date
Application number
IT8819916A
Other languages
English (en)
Other versions
IT1216507B (it
Inventor
Giuseppe Bruzzone
Giovanni Ghelli
Diego Perrone
Original Assignee
Stoppani Luigi Spa
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 Stoppani Luigi Spa filed Critical Stoppani Luigi Spa
Priority to IT8819916A priority Critical patent/IT1216507B/it
Publication of IT8819916A0 publication Critical patent/IT8819916A0/it
Priority to AT88904607T priority patent/ATE83754T1/de
Priority to US07/573,019 priority patent/US5112583A/en
Priority to PCT/IT1988/000038 priority patent/WO1989009188A1/en
Priority to EP88904607A priority patent/EP0406234B1/en
Priority to AU17923/88A priority patent/AU1792388A/en
Priority to DE8888904607T priority patent/DE3876999T2/de
Application granted granted Critical
Publication of IT1216507B publication Critical patent/IT1216507B/it

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/04—Mineral tanning
    • C14C3/06—Mineral tanning using chromium compounds
    • 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
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/08—Chromium sulfates
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
    • C01G37/00—Compounds of chromium
    • C01G37/14—Chromates; Bichromates

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Removal Of Specific Substances (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
IT8819916A 1988-03-23 1988-03-23 Procedimento per il recupero di anidride cromica da soluzioni acquose esauste di bagni di cromatura con valorizzazione del cromo recuperato. IT1216507B (it)

Priority Applications (7)

Application Number Priority Date Filing Date Title
IT8819916A IT1216507B (it) 1988-03-23 1988-03-23 Procedimento per il recupero di anidride cromica da soluzioni acquose esauste di bagni di cromatura con valorizzazione del cromo recuperato.
AT88904607T ATE83754T1 (de) 1988-03-23 1988-05-24 Verfahren zur wiedergewinnung von chromanhydrid aus erschoepften waessrigen chromplattierungsbaedern unter verwendung des gewonnenen chroms.
US07/573,019 US5112583A (en) 1988-03-23 1988-05-24 Process for recovering chromic anhydride from exhausted aqueous chromium plating bath solutions with exploitation of the recovered chromium
PCT/IT1988/000038 WO1989009188A1 (en) 1988-03-23 1988-05-24 Process for recovering chromic anhydride from exhausted aqueous chromium plating bath solutions with exploitation of the recovered chromium
EP88904607A EP0406234B1 (en) 1988-03-23 1988-05-24 Process for recovering chromic anhydride from exhausted aqueous chromium plating bath solutions with exploitation of the recovered chromium
AU17923/88A AU1792388A (en) 1988-03-23 1988-05-24 Process for recovering chromic anhydride from exhausted aqueous chromium plating bath solutions with exploitation of the recovered chromium
DE8888904607T DE3876999T2 (de) 1988-03-23 1988-05-24 Verfahren zur wiedergewinnung von chromanhydrid aus erschoepften waessrigen chromplattierungsbaedern unter verwendung des gewonnenen chroms.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT8819916A IT1216507B (it) 1988-03-23 1988-03-23 Procedimento per il recupero di anidride cromica da soluzioni acquose esauste di bagni di cromatura con valorizzazione del cromo recuperato.

Publications (2)

Publication Number Publication Date
IT8819916A0 true IT8819916A0 (it) 1988-03-23
IT1216507B IT1216507B (it) 1990-03-08

Family

ID=11162313

Family Applications (1)

Application Number Title Priority Date Filing Date
IT8819916A IT1216507B (it) 1988-03-23 1988-03-23 Procedimento per il recupero di anidride cromica da soluzioni acquose esauste di bagni di cromatura con valorizzazione del cromo recuperato.

Country Status (7)

Country Link
US (1) US5112583A (it)
EP (1) EP0406234B1 (it)
AT (1) ATE83754T1 (it)
AU (1) AU1792388A (it)
DE (1) DE3876999T2 (it)
IT (1) IT1216507B (it)
WO (1) WO1989009188A1 (it)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5571489A (en) * 1995-01-27 1996-11-05 Illinois Institute Of Technology Process for chromium recovery from aqueous solutions
US6063252A (en) * 1997-08-08 2000-05-16 Raymond; John L. Method and apparatus for enriching the chromium in a chromium plating bath
CN108586766A (zh) * 2018-05-09 2018-09-28 中钢集团洛阳耐火材料研究院有限公司 一种液相法合成含铬的多齿配位聚合物的方法
CN113201788A (zh) * 2020-06-24 2021-08-03 田振奎 一种镀铬老化液和镀铬废液再生的方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB148615A (en) * 1919-04-22 1920-07-22 Jules Morel Improvements in the production of basic sulphate of chrome and its application to tanning and other uses
FR551624A (fr) * 1921-09-06 1923-04-10 Procédé industriel pour la récupération du chrome des eaux résiduaires
US4108596A (en) * 1975-07-11 1978-08-22 Revere Copper And Brass, Incorporated Recovery of chromium values from waste streams by the use of alkaline magnesium compounds
IT1042133B (it) * 1975-08-28 1980-01-30 Stoppani P & Co Procedimento per il recupero e la valorizzazione degli scarti della fabbricazione dell anidri de cromica
JPS582165B2 (ja) * 1979-08-18 1983-01-14 北大阪清掃株式会社 クロム酸廃液の処理方法
US4318788A (en) * 1979-12-12 1982-03-09 Andco Environmental Processes, Inc. Chromate recovery process

Also Published As

Publication number Publication date
ATE83754T1 (de) 1993-01-15
WO1989009188A1 (en) 1989-10-05
DE3876999D1 (de) 1993-02-04
IT1216507B (it) 1990-03-08
EP0406234A1 (en) 1991-01-09
US5112583A (en) 1992-05-12
AU1792388A (en) 1989-10-16
DE3876999T2 (de) 1993-06-03
EP0406234B1 (en) 1992-12-23

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Legal Events

Date Code Title Description
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19950330