BR7701105A - Processo de descontaminacao de material residual proveniente do processamento de minerais de cromo,mediante tratamento com enxofre por via umida - Google Patents

Processo de descontaminacao de material residual proveniente do processamento de minerais de cromo,mediante tratamento com enxofre por via umida

Info

Publication number
BR7701105A
BR7701105A BR7701105A BR7701105A BR7701105A BR 7701105 A BR7701105 A BR 7701105A BR 7701105 A BR7701105 A BR 7701105A BR 7701105 A BR7701105 A BR 7701105A BR 7701105 A BR7701105 A BR 7701105A
Authority
BR
Brazil
Prior art keywords
chromy
decontamination
humid
minerals
sulfur
Prior art date
Application number
BR7701105A
Other languages
English (en)
Inventor
G Ghell
Original Assignee
Stoppani & C Soc Coll
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 & C Soc Coll filed Critical Stoppani & C Soc Coll
Publication of BR7701105A publication Critical patent/BR7701105A/pt

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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • 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
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
    • C22B3/08—Sulfuric acid, other sulfurated acids or salts thereof
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/006—Wet processes
    • C22B7/007—Wet processes by acid leaching
    • 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)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
BR7701105A 1976-02-24 1977-02-18 Processo de descontaminacao de material residual proveniente do processamento de minerais de cromo,mediante tratamento com enxofre por via umida BR7701105A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2051676A IT1055953B (it) 1976-02-24 1976-02-24 Procedimento di decontaminazione di materiale di scarto proveniente dalla lavorazione di minerali di cromo mediante trattamento conzolfo per via umida

Publications (1)

Publication Number Publication Date
BR7701105A true BR7701105A (pt) 1977-12-06

Family

ID=11168102

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7701105A BR7701105A (pt) 1976-02-24 1977-02-18 Processo de descontaminacao de material residual proveniente do processamento de minerais de cromo,mediante tratamento com enxofre por via umida

Country Status (13)

Country Link
US (1) US4139460A (pt)
JP (1) JPS52131992A (pt)
BR (1) BR7701105A (pt)
DE (1) DE2704775C3 (pt)
ES (1) ES455970A1 (pt)
FR (1) FR2342347A1 (pt)
GB (1) GB1544882A (pt)
IT (1) IT1055953B (pt)
MX (1) MX146210A (pt)
PL (1) PL101477B1 (pt)
RO (1) RO75854A (pt)
SU (1) SU797553A3 (pt)
ZA (1) ZA77835B (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4207295A (en) * 1979-02-13 1980-06-10 Union Carbide Corporation Processing of chromium ore
US4259297A (en) * 1979-09-04 1981-03-31 Olin Corporation Chromate removal from concentrated chlorate solution by chemical precipitation
IT1262918B (it) * 1992-01-21 1996-07-22 Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo
US6607474B2 (en) 2000-06-30 2003-08-19 Rmt, Inc. Method for stabilizing chromium-contaminated materials
BE1015759A4 (fr) * 2003-10-31 2005-08-02 Inst Nat Interuniversitaire De Traitement d'une solution contenant du chrome hexavalent.
DE602004028034D1 (de) * 2003-10-31 2010-08-19 Ct De Rech De L Ind Belge De L Verfahren zur dekontaminierung hexavalentes chrom enthaltender feuerfestmaterialien
JP5407337B2 (ja) * 2009-01-06 2014-02-05 大同特殊鋼株式会社 還元スラグの処理方法
CN111498916B (zh) * 2020-06-03 2022-07-26 中国恩菲工程技术有限公司 红土镍矿制备氢氧化镍钴过程中去除六价铬的方法

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2350960A (en) * 1938-06-07 1944-06-06 Mutual Chemical Company Of Ame Production and acid treatment of hydrous chromic oxide
US2246396A (en) * 1938-06-07 1941-06-17 Mutual Chemical Company Reduction of chromates to produce chromic oxide
US2209907A (en) * 1938-06-29 1940-07-30 Mutual Chemical Company Of Ame Manufacture of pigments
US3294680A (en) * 1964-11-18 1966-12-27 Lancy Lab Treatment of spent cooling waters
JPS5025915B1 (pt) * 1971-02-16 1975-08-27
US3810542A (en) * 1971-11-26 1974-05-14 Texas Gulf Inc Process for removing chromium from cooling tower blowdown streams
CA1026472A (en) * 1972-07-07 1978-02-14 Universite De Sherbrooke Removal and recovery of chromium from polluted waters
US3981965A (en) * 1972-08-17 1976-09-21 Allied Chemical Corporation Suppression of water pollution caused by solid wastes containing chromium compounds
US3901805A (en) * 1973-10-24 1975-08-26 Dow Badische Co Removing toxic chromium from industrial effluents
US3937785A (en) * 1974-09-17 1976-02-10 Allied Chemical Corporation Treatment of chromium ore residues to suppress pollution

Also Published As

Publication number Publication date
RO75854A (ro) 1982-04-12
DE2704775B2 (de) 1978-11-30
MX146210A (es) 1982-05-26
FR2342347A1 (fr) 1977-09-23
US4139460A (en) 1979-02-13
GB1544882A (en) 1979-04-25
PL101477B1 (pl) 1978-12-30
DE2704775A1 (de) 1977-08-25
IT1055953B (it) 1982-01-11
FR2342347B1 (pt) 1983-06-10
ZA77835B (en) 1977-12-28
JPS558454B2 (pt) 1980-03-04
SU797553A3 (ru) 1981-01-15
DE2704775C3 (de) 1979-08-30
ES455970A1 (es) 1978-01-16
JPS52131992A (en) 1977-11-05

Similar Documents

Publication Publication Date Title
BR7605721A (pt) Processo de tratamento de residuos
AT385743B (de) Vorrichtung zum zufuehren von baumstaemmen oder dergleichen
ES244173Y (es) Tensor de tornillo mejorado.
BR7701105A (pt) Processo de descontaminacao de material residual proveniente do processamento de minerais de cromo,mediante tratamento com enxofre por via umida
BR8001111A (pt) Processo para aumentar o brilho de calcario, e produto assim obtido
AT248398B (de) Vorrichtung zum Behandeln von pulverförmigen Stoffen oder Granulaten
ATA873277A (de) Anlage zum verarbeiten von altpapier
BR7903084A (pt) Processo de elaboracao de couro
ATA309077A (de) Anlage zur aufbereitung von altpapier
ATE1002T1 (de) Vorrichtung zum abtragen von schuettgut von schuettguthaufen.
AT366594B (de) Vorrichtung zum vermahlen von insbesondere koernigem gut, getrockneten pflanzen od. dgl.
AT388504B (de) Vorrichtung zum fixieren von kathetern od. dgl.
AT374404B (de) Vorrichtung zum verziehen von geschlossenen reihen von formlingen, z.b. ziegelformlingen
AT389533B (de) Vorrichtung, insbesondere refiner, zur zerkleinerung bzw. zum mahlen von faserstoffmaterial
BR7208448D0 (pt) Processo para tratamento da superficie de materiais descontinuos em lencoi especialmente couros, por meio de dispositivos que giram no plano horizontal acima de um transportador
ATA244476A (de) Transportable vorrichtung zum aufbereiten von verbrauchten emulsionen, losungen, industrieabwassern od.dgl.
AT351000B (de) Behaelter zum behandeln von stueckigen bzw. koernigen materialien
IT7823870A0 (it) Impianto per il trattamento dimateriali.
BR8103077A (pt) Processo de tratamento de desperdicios industriais
IT1089116B (it) Procedimento e macchina per l'attuazione del procedimento per scarnare cuoi e pelli
DE68913362D1 (de) Vorrichtung zum Färben bzw. Bleichen von Garnen oder dergleichen.
OA06380A (fr) Procédé de réduction de minerais latéritiques.
BR7606876A (pt) Processo para a flotacao de minerais valiosos,nao-sulfetados,contendo niobio e/ou tantalo
IT7825227A0 (it) Agenti ammorbidenti e idrofuganti, loro impiego e loro preparazione, materiali con essi trattati, sulfoniluree contenute in questi agenti e processo per la loro preparazione.
AT361380B (de) Vorrichtung zum foerdern von schuettgut