RO117687B1 - Procedeu şi instalaţie de recuperare a metalelor din soluţiile de cromare, uzate - Google Patents

Procedeu şi instalaţie de recuperare a metalelor din soluţiile de cromare, uzate

Info

Publication number
RO117687B1
RO117687B1 ROA200001056A RO200001056A RO117687B1 RO 117687 B1 RO117687 B1 RO 117687B1 RO A200001056 A ROA200001056 A RO A200001056A RO 200001056 A RO200001056 A RO 200001056A RO 117687 B1 RO117687 B1 RO 117687B1
Authority
RO
Romania
Prior art keywords
chromium plating
installation
plating solutions
waste chromium
recovering metal
Prior art date
Application number
ROA200001056A
Other languages
English (en)
Inventor
I. Petrişor Paul Lungulescu
P. Benedict Pisicescu
Original Assignee
I. Petrişor Paul Lungulescu
P. Benedict Pisicescu
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 I. Petrişor Paul Lungulescu, P. Benedict Pisicescu filed Critical I. Petrişor Paul Lungulescu
Priority to ROA200001056A priority Critical patent/RO117687B1/ro
Priority to PCT/RO2001/000017 priority patent/WO2002036839A1/en
Priority to AU2001290393A priority patent/AU2001290393A1/en
Publication of RO117687B1 publication Critical patent/RO117687B1/ro

Links

Classifications

    • 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
    • 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
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/20—Treatment or purification of solutions, e.g. obtained by leaching
    • C22B3/44—Treatment or purification of solutions, e.g. obtained by leaching by chemical processes
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/16—Regeneration of process solutions
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Metallurgy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Electrochemistry (AREA)
  • Removal Of Specific Substances (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

Invenţia se referă la un procedeu şi la o instalaţie de recuperare a metalelor din soluţiile de cromare, uzate. Procedeul constă în tratarea soluţiilor de cromare, uzate, cu amoniac gazos, timp de 1...1,5 h, într-o cuvă metalică (1). Dicromatul de amoniu, rezultat, este filtrat pe un filtru - presă (13), uscat, după care este calcinat într-un cuptor de calcinare (17). Trioxidul de crom, rezultat în urma calcinării, este măcinat într-o moară cu bile (18).
ROA200001056A 2000-10-30 2000-10-30 Procedeu şi instalaţie de recuperare a metalelor din soluţiile de cromare, uzate RO117687B1 (ro)

Priority Applications (3)

Application Number Priority Date Filing Date Title
ROA200001056A RO117687B1 (ro) 2000-10-30 2000-10-30 Procedeu şi instalaţie de recuperare a metalelor din soluţiile de cromare, uzate
PCT/RO2001/000017 WO2002036839A1 (en) 2000-10-30 2001-09-25 Method and installation of metal retrieving from used chroming solutions
AU2001290393A AU2001290393A1 (en) 2000-10-30 2001-09-25 Method and installation of metal retrieving from used chroming solutions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ROA200001056A RO117687B1 (ro) 2000-10-30 2000-10-30 Procedeu şi instalaţie de recuperare a metalelor din soluţiile de cromare, uzate

Publications (1)

Publication Number Publication Date
RO117687B1 true RO117687B1 (ro) 2002-06-28

Family

ID=20129388

Family Applications (1)

Application Number Title Priority Date Filing Date
ROA200001056A RO117687B1 (ro) 2000-10-30 2000-10-30 Procedeu şi instalaţie de recuperare a metalelor din soluţiile de cromare, uzate

Country Status (3)

Country Link
AU (1) AU2001290393A1 (ro)
RO (1) RO117687B1 (ro)
WO (1) WO2002036839A1 (ro)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7203993A (en) * 1972-03-24 1973-09-26 Treating chromium contg ind effluents - by neutralising with ammonia, heating and drying
JPS5935842B2 (ja) * 1978-06-30 1984-08-31 日本電工株式会社 クロム酸老化液中の有用物質の回収法
JPS5521508A (en) * 1978-07-31 1980-02-15 Nippon Denko Kk Recovering method for useful substance from aged solution of chromic acid
JPS5757900A (en) * 1980-09-22 1982-04-07 Kitaoosaka Seisou Kk Method for recycling waste chromium plating solution
US4680126A (en) * 1986-02-18 1987-07-14 Frankard James M Separation and recovery of reusable heavy metal hydroxides from metal finishing wastewaters
FR2669323B1 (fr) * 1990-11-16 1993-06-18 Isochrome Procede pour epurer les solutions usagees aqueuses d'acide chromique, et solutions ainsi epurees.

Also Published As

Publication number Publication date
AU2001290393A1 (en) 2002-05-15
WO2002036839A1 (en) 2002-05-10

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