ES8400989A1 - Procedimiento para disminuir el contenido de metales pesados, especialmente de compuestos de cadmio, en el fosfato bruto. - Google Patents

Procedimiento para disminuir el contenido de metales pesados, especialmente de compuestos de cadmio, en el fosfato bruto.

Info

Publication number
ES8400989A1
ES8400989A1 ES519691A ES519691A ES8400989A1 ES 8400989 A1 ES8400989 A1 ES 8400989A1 ES 519691 A ES519691 A ES 519691A ES 519691 A ES519691 A ES 519691A ES 8400989 A1 ES8400989 A1 ES 8400989A1
Authority
ES
Spain
Prior art keywords
heavy metal
ions
metal content
reduction
crude phosphate
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
ES519691A
Other languages
English (en)
Other versions
ES519691A0 (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.)
Hoechst AG
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
Hoechst AG
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
Priority claimed from DE19823204963 external-priority patent/DE3204963A1/de
Priority claimed from DE19823210575 external-priority patent/DE3210575A1/de
Application filed by Uhde GmbH, Hoechst AG filed Critical Uhde GmbH
Publication of ES8400989A1 publication Critical patent/ES8400989A1/es
Publication of ES519691A0 publication Critical patent/ES519691A0/es
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B25/00—Phosphorus; Compounds thereof
    • C01B25/01—Treating phosphate ores or other raw phosphate materials to obtain phosphorus or phosphorus compounds
    • 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
    • C22B3/26—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds
    • C22B3/38—Treatment or purification of solutions, e.g. obtained by leaching by liquid-liquid extraction using organic compounds containing phosphorus
    • C22B3/385—Thiophosphoric acids, or esters thereof
    • 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)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Environmental & Geological Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Removal Of Specific Substances (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)

Abstract

PROCEDIMIENTO PARA DISMINUIR EL CONTENIDO DE METALES PESADOS, ESPECIALMENTE DE COMPUESTOS DE CADMIO, EN EL FOSFATO BRUTO.SE MEZCLAN FOSFATO BRUTO, ACIDO NITRICO AL 30-70 Y UNA SOLUCION DE NITRATO CALCICO CON UNA CONCENTRACION DEL 10-50 EN PESO Y SE AJUSTA EL PH DE LA MEZCLA A 0,2-3 MEDIANTE UNA SOLUCION ACIDA, TAL COMO ACIDO NITRICO, FOSFORICO, CLORHIDRICO O SUS MEZCLAS, SIENDO LA PROPORCION DE FOSFATO BRUTO A LOS LIQUIDOS AÑADIDOS DE 0,3-3:1. SE SEPARA EL FOSFATO BRUTO, POR EJEMPLO MEDIANTE FILTRACION, Y POSTERIORMENTE SE EFECTUA UNA NEUTRALIZACION, POR EJEMPLOMEDIANTE HIDROXIDO SODICO, DE LA SOLUCION QUE CONTIENE LOS METALES PESADOS, O SE PRECIPITAN DICHOS METALES EN FORMA DE SULFUROS AÑADIENDO SULFURO DE HIDROGENO, PROCEDIDO GENERALMENTE DE UNA NEUTRALIZACION, O SE EXTRAEN LOS METALES PESADOS CON UN AGENTE DE EXTRACCION, TAL COMO UN ACIDO DITIOFOSFINICO. EN TODOS ESTOS CASOS EL NITRATO CALCICO SE RECONDUCE AL COMIENZO DEL PROCESO.
ES519691A 1982-02-12 1983-02-10 Procedimiento para disminuir el contenido de metales pesados, especialmente de compuestos de cadmio, en el fosfato bruto. Granted ES519691A0 (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19823204963 DE3204963A1 (de) 1982-02-12 1982-02-12 Verfahren zur verminderung des schwermetall-gehaltes im rohphosphat
DE19823210575 DE3210575A1 (de) 1982-03-23 1982-03-23 Verfahren zur verminderung des schwermetall-gehaltes, insbesondere an cadmiumverbindungen

Publications (2)

Publication Number Publication Date
ES8400989A1 true ES8400989A1 (es) 1983-12-01
ES519691A0 ES519691A0 (es) 1983-12-01

Family

ID=25799554

Family Applications (1)

Application Number Title Priority Date Filing Date
ES519691A Granted ES519691A0 (es) 1982-02-12 1983-02-10 Procedimiento para disminuir el contenido de metales pesados, especialmente de compuestos de cadmio, en el fosfato bruto.

Country Status (4)

Country Link
EP (1) EP0087065B1 (es)
DE (1) DE3360853D1 (es)
ES (1) ES519691A0 (es)
NO (1) NO830474L (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3332698A1 (de) * 1983-09-10 1985-03-21 Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim Verfahren zur entfernung von cadmium aus phosphaterzen
US4721605A (en) * 1985-07-24 1988-01-26 American Cyanamid Company Selective removal of metals from aqueous solutions with dithiophosphinic acids
FR2649391B1 (fr) * 1989-07-04 1991-10-31 Pierre Becker Procede de traitement de l'acide phosphorique pour en eliminer certains metaux lourds

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2447390C3 (de) * 1974-10-04 1983-11-17 Hoechst Ag, 6230 Frankfurt Verfahren zur Reinigung von Naßphosphorsäure
JPS5375196A (en) * 1976-12-15 1978-07-04 Central Glass Co Ltd Removing method for heavy metals from phosphoric acid solution
SE418845B (sv) * 1979-05-10 1981-06-29 Boliden Ab Forfarande for rening av vatprocessfosforsyra

Also Published As

Publication number Publication date
DE3360853D1 (en) 1985-10-31
EP0087065B1 (de) 1985-09-25
NO830474L (no) 1983-08-15
ES519691A0 (es) 1983-12-01
EP0087065A1 (de) 1983-08-31

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