IT1262918B - Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo - Google Patents

Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo

Info

Publication number
IT1262918B
IT1262918B ITMI920092A IT1262918B IT 1262918 B IT1262918 B IT 1262918B IT MI920092 A ITMI920092 A IT MI920092A IT 1262918 B IT1262918 B IT 1262918B
Authority
IT
Italy
Prior art keywords
residues
processing
plant
hexavalent chromium
chrome
Prior art date
Application number
Other languages
English (en)
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 filed Critical
Publication of ITMI920092A0 publication Critical patent/ITMI920092A0/it
Priority to IT92MI92 priority Critical patent/IT1262918B/it
Priority to SK841-94A priority patent/SK84194A3/sk
Priority to RU94044672A priority patent/RU2096511C1/ru
Priority to EP93902135A priority patent/EP0621905A1/en
Priority to BR9207057A priority patent/BR9207057A/pt
Priority to RO94-01227A priority patent/RO110458B1/ro
Priority to CZ941703A priority patent/CZ170394A3/cs
Priority to PL92304301A priority patent/PL171592B1/pl
Priority to AU33475/93A priority patent/AU3347593A/en
Priority to PCT/EP1992/003007 priority patent/WO1993014232A1/en
Priority to ZA9343A priority patent/ZA9343B/xx
Priority to TR1893A priority patent/TR26598A/xx
Priority to CN93100815A priority patent/CN1074948A/zh
Priority to MX9300307A priority patent/MX9300307A/es
Publication of ITMI920092A1 publication Critical patent/ITMI920092A1/it
Application granted granted Critical
Publication of IT1262918B publication Critical patent/IT1262918B/it

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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/08—Dry methods smelting of sulfides or formation of mattes by sulfides; Roasting reaction methods
    • 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)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)
  • Removal Of Specific Substances (AREA)

Abstract

La presente invenzione si riferisce ad un nuovo procedimento e relativo impianto di riduzione del cromo esavalente contenuto nelle terre di risulta della lavorazione del cromo, per ottenerne la trasformazione da composti solubili in acqua a composti insolubili e procedimento caratterizzato dal fatto di comprendere le fasi di miscelare detti residui con uno o più agenti riducenti e di riscaldare detta miscela indirettamente in sostanziale assenza di ossigeno.
IT92MI92 1992-01-21 1992-01-21 Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo IT1262918B (it)

Priority Applications (14)

Application Number Priority Date Filing Date Title
IT92MI92 IT1262918B (it) 1992-01-21 1992-01-21 Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo
CZ941703A CZ170394A3 (en) 1992-01-21 1992-12-29 Process and apparatus for reducing hexavalent chromium contained in a residue from chrome ore dressing process
AU33475/93A AU3347593A (en) 1992-01-21 1992-12-29 Process and plant for the reduction of hexavalent chromium contained in the residue resulting from the processing of chromium minerals
EP93902135A EP0621905A1 (en) 1992-01-21 1992-12-29 Process for the reduction of hexavalent chromium contained in the residue resulting from the processing of chromium minerals
BR9207057A BR9207057A (pt) 1992-01-21 1992-12-29 Processo para obter compostos de cromo insolúveis em água e instalação para redução de cromo hexavalente
RO94-01227A RO110458B1 (ro) 1992-01-21 1992-12-29 Procedeu de obtinere a compusilor de crom trivalent, insolubili in apa, din produsi reziduali de la prelucrarea minereurilor de crom
SK841-94A SK84194A3 (en) 1992-01-21 1992-12-29 Process for reduction of hexavalent chromium and device for realization of this method
PL92304301A PL171592B1 (pl) 1992-01-21 1992-12-29 S posób redukowania szesciowartosciowego chromu, zawartego w pozostalosciach pochodzacych z przetwarzania mineralów chromowych PL
RU94044672A RU2096511C1 (ru) 1992-01-21 1992-12-29 Способ получения водонерастворимых соединений хрома
PCT/EP1992/003007 WO1993014232A1 (en) 1992-01-21 1992-12-29 Process and plant for the reduction of hexavalent chromium contained in the residue resulting from the processing of chromium minerals
ZA9343A ZA9343B (en) 1992-01-21 1993-01-05 Process and plant for the reduction of hexavalent chromiun contained in the residue resulting from the processing of chromium minerals.
TR1893A TR26598A (tr) 1992-01-21 1993-01-18 KROM MINERALLERININ ISLEME TABI TUTULMASI SONUCU ORTAYA CIKAN ARTIKTA BULUNAN HEKSAVALEN KROMUN REDüKSIYONU ICIN GEREKLI ISLEM VE TESIS.
CN93100815A CN1074948A (zh) 1992-01-21 1993-01-20 从加工铬矿石中的残余物中还原六价铬的方法及设备
MX9300307A MX9300307A (es) 1992-01-21 1993-01-21 Proceso y planta para la reduccion de cromo hexavalente contenido en el residuo resultante del procesamiento de minerales de cromo

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT92MI92 IT1262918B (it) 1992-01-21 1992-01-21 Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo

Publications (3)

Publication Number Publication Date
ITMI920092A0 ITMI920092A0 (it) 1992-01-21
ITMI920092A1 ITMI920092A1 (it) 1993-07-21
IT1262918B true IT1262918B (it) 1996-07-22

Family

ID=11361603

Family Applications (1)

Application Number Title Priority Date Filing Date
IT92MI92 IT1262918B (it) 1992-01-21 1992-01-21 Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo

Country Status (14)

Country Link
EP (1) EP0621905A1 (it)
CN (1) CN1074948A (it)
AU (1) AU3347593A (it)
BR (1) BR9207057A (it)
CZ (1) CZ170394A3 (it)
IT (1) IT1262918B (it)
MX (1) MX9300307A (it)
PL (1) PL171592B1 (it)
RO (1) RO110458B1 (it)
RU (1) RU2096511C1 (it)
SK (1) SK84194A3 (it)
TR (1) TR26598A (it)
WO (1) WO1993014232A1 (it)
ZA (1) ZA9343B (it)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE602006004968D1 (de) 2005-02-08 2009-03-12 Cromotecnica Mexico Sa De Cv Verfahren und anlage zur umwandlung von chromhaltigem gefährlichem abfall in ungefählriche abfälle
DE202008014318U1 (de) 2008-10-28 2010-04-01 Dr. Hahn Gmbh & Co. Kg Band zur um eine Scharnierachse scharniergelenkigen Verbindung eines Flügels an einem Rahmen
PT2870107T (pt) * 2012-07-06 2018-03-28 Lanxess Deutschland Gmbh Processo para redução de cromo hexavalente em sólidos oxídicos

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1055953B (it) * 1976-02-24 1982-01-11 Stoppani P & Co Procedimento di decontaminazione di materiale di scarto proveniente dalla lavorazione di minerali di cromo mediante trattamento conzolfo per via umida
JP2655864B2 (ja) * 1988-03-14 1997-09-24 昭和電工株式会社 高還元クロム鉱石粉体の製造方法

Also Published As

Publication number Publication date
AU3347593A (en) 1993-08-03
BR9207057A (pt) 1995-12-05
RU94044672A (ru) 1996-08-27
ITMI920092A0 (it) 1992-01-21
CN1074948A (zh) 1993-08-04
WO1993014232A1 (en) 1993-07-22
TR26598A (tr) 1995-03-15
PL171592B1 (pl) 1997-05-30
MX9300307A (es) 1993-12-01
RU2096511C1 (ru) 1997-11-20
ITMI920092A1 (it) 1993-07-21
CZ170394A3 (en) 1995-08-16
EP0621905A1 (en) 1994-11-02
RO110458B1 (ro) 1996-01-30
SK84194A3 (en) 1995-08-09
ZA9343B (en) 1993-08-05

Similar Documents

Publication Publication Date Title
CY2071B1 (en) Method of treating androgenic alopecia with 5-alpha reductase inhibitors
FR2574159B1 (fr) Procede d'incineration de dechets a temperature controlee
IT1262918B (it) Procedimento ed impianto per la riduzione del cromo esavalente contenuto nei residui della lavorazione dei minerali di cromo
ZA907704B (en) Process for nitrocarburizing components made from steel
HUP0203820A2 (en) Method for treating slags or slag mixtures on an iron bath
HUT63080A (en) Method for producing clinker
FI892061A0 (fi) Menetelmä, jonka avulla voidaan valmistaa ferrikloridia lähtemällä ferrokloridista
IL117157A (en) Preparation of factor ix form biological sources
ATE184584T1 (de) Verfahren zur behandlung und umweltverträglichen verwertung von asbestzementprodukten
DE69216604D1 (de) Gestaltung eines abstiches und giessverfahren
RO81955A (ro) Procedeu si creuzet de afinare a unei bai de fonta
NO20033468L (no) Fremgangsmåte og behandling av slam med partikler omfattende iblandet metall, metalloksid eller metallhydroksid
EP0015521A3 (de) Rauch- und Kochvorrichtung für Lebensmittel
NO943847L (no) Fremgangsmåte for fremstilling av makrocykliske chelateringsmidler og dannelse av chelater og konjugater derav
SU440422A2 (ru) Способ обработки металлов в вакууме и столбе синтетического шлака
FR2323641A1 (fr) Procede et dispositif de traitement d'ordures menageres
Monastyrenko et al. The automatic detoxification of waste waters containing cyanide
Piret et al. Utilization of LD Process Slag for the Production of Portland Cement Clinker and Pig Iron
IT1225959B (it) Metodo per evitare la carburazione e supplire alle punte di produzionenella laminazione di billette
Hock et al. Measures to control heat treatment distortion in series production and effects of novel processes
ATE88990T1 (de) Verfahren zur waermebehandlung von feinkoernigem gut.
UA6760A (uk) Спосіб одержання кислотних лігнінових моноазобарвників
UA19293A (uk) Феритhа корозійhостійка сталь
SE8801736D0 (sv) Forfarande for rening av avloppsvatten
ES8703165A1 (es) Instalacion para el precalentamiento de materias primas con destino a los procedimientos de fabricacion de acero mediante conversion al oxigeno

Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19960424