IT1216507B - 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
- IT1216507B IT1216507B IT8819916A IT1991688A IT1216507B IT 1216507 B IT1216507 B IT 1216507B IT 8819916 A IT8819916 A IT 8819916A IT 1991688 A IT1991688 A IT 1991688A IT 1216507 B IT1216507 B IT 1216507B
- Authority
- IT
- Italy
- Prior art keywords
- pct
- chrome
- chromium
- exhausted
- recovered
- Prior art date
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)
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. |
DE8888904607T DE3876999T2 (de) | 1988-03-23 | 1988-05-24 | Verfahren zur wiedergewinnung von chromanhydrid aus erschoepften waessrigen chromplattierungsbaedern unter verwendung des gewonnenen chroms. |
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 |
AT88904607T ATE83754T1 (de) | 1988-03-23 | 1988-05-24 | Verfahren zur wiedergewinnung von chromanhydrid aus erschoepften waessrigen chromplattierungsbaedern unter verwendung des gewonnenen chroms. |
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 |
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 |
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 IT8819916A0 (it) | 1988-03-23 |
IT1216507B true 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)
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)
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 |
-
1988
- 1988-03-23 IT IT8819916A patent/IT1216507B/it active
- 1988-05-24 DE DE8888904607T patent/DE3876999T2/de not_active Expired - Fee Related
- 1988-05-24 EP EP88904607A patent/EP0406234B1/en not_active Expired - Lifetime
- 1988-05-24 WO PCT/IT1988/000038 patent/WO1989009188A1/en active IP Right Grant
- 1988-05-24 US US07/573,019 patent/US5112583A/en not_active Expired - Fee Related
- 1988-05-24 AT AT88904607T patent/ATE83754T1/de not_active IP Right Cessation
- 1988-05-24 AU AU17923/88A patent/AU1792388A/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
AU1792388A (en) | 1989-10-16 |
WO1989009188A1 (en) | 1989-10-05 |
DE3876999D1 (de) | 1993-02-04 |
US5112583A (en) | 1992-05-12 |
EP0406234B1 (en) | 1992-12-23 |
ATE83754T1 (de) | 1993-01-15 |
EP0406234A1 (en) | 1991-01-09 |
DE3876999T2 (de) | 1993-06-03 |
IT8819916A0 (it) | 1988-03-23 |
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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 |