ES455970A1 - Un metodo para descontaminar material de desecho procedente del tratamiento en humedo de mineral de cromo, con azufre. - Google Patents

Un metodo para descontaminar material de desecho procedente del tratamiento en humedo de mineral de cromo, con azufre.

Info

Publication number
ES455970A1
ES455970A1 ES455970A ES455970A ES455970A1 ES 455970 A1 ES455970 A1 ES 455970A1 ES 455970 A ES455970 A ES 455970A ES 455970 A ES455970 A ES 455970A ES 455970 A1 ES455970 A1 ES 455970A1
Authority
ES
Spain
Prior art keywords
sulphur
wet treatment
particles
waste material
average size
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
ES455970A
Other languages
English (en)
Spanish (es)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Stoppani P & Co
Original Assignee
Stoppani P & Co
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 P & Co filed Critical Stoppani P & Co
Publication of ES455970A1 publication Critical patent/ES455970A1/es
Expired legal-status Critical Current

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)
ES455970A 1976-02-24 1977-02-16 Un metodo para descontaminar material de desecho procedente del tratamiento en humedo de mineral de cromo, con azufre. Expired ES455970A1 (es)

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
ES455970A1 true ES455970A1 (es) 1978-01-16

Family

ID=11168102

Family Applications (1)

Application Number Title Priority Date Filing Date
ES455970A Expired ES455970A1 (es) 1976-02-24 1977-02-16 Un metodo para descontaminar material de desecho procedente del tratamiento en humedo de mineral de cromo, con azufre.

Country Status (13)

Country Link
US (1) US4139460A (US07122603-20061017-C00145.png)
JP (1) JPS52131992A (US07122603-20061017-C00145.png)
BR (1) BR7701105A (US07122603-20061017-C00145.png)
DE (1) DE2704775C3 (US07122603-20061017-C00145.png)
ES (1) ES455970A1 (US07122603-20061017-C00145.png)
FR (1) FR2342347A1 (US07122603-20061017-C00145.png)
GB (1) GB1544882A (US07122603-20061017-C00145.png)
IT (1) IT1055953B (US07122603-20061017-C00145.png)
MX (1) MX146210A (US07122603-20061017-C00145.png)
PL (1) PL101477B1 (US07122603-20061017-C00145.png)
RO (1) RO75854A (US07122603-20061017-C00145.png)
SU (1) SU797553A3 (US07122603-20061017-C00145.png)
ZA (1) ZA77835B (US07122603-20061017-C00145.png)

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 (US07122603-20061017-C00145.png) * 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
BR7701105A (pt) 1977-12-06
IT1055953B (it) 1982-01-11
FR2342347B1 (US07122603-20061017-C00145.png) 1983-06-10
ZA77835B (en) 1977-12-28
JPS558454B2 (US07122603-20061017-C00145.png) 1980-03-04
SU797553A3 (ru) 1981-01-15
DE2704775C3 (de) 1979-08-30
JPS52131992A (en) 1977-11-05

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Legal Events

Date Code Title Description
FD1A Patent lapsed

Effective date: 19970930