ES8400071A1 - "procedimiento para la obtencion de acido fosforico bruto exento de cadmio". - Google Patents

"procedimiento para la obtencion de acido fosforico bruto exento de cadmio".

Info

Publication number
ES8400071A1
ES8400071A1 ES515429A ES515429A ES8400071A1 ES 8400071 A1 ES8400071 A1 ES 8400071A1 ES 515429 A ES515429 A ES 515429A ES 515429 A ES515429 A ES 515429A ES 8400071 A1 ES8400071 A1 ES 8400071A1
Authority
ES
Spain
Prior art keywords
phosphoric acid
crude
cadmium
crude phosphoric
recovering
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
ES515429A
Other languages
English (en)
Other versions
ES515429A0 (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
Original Assignee
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6140746&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=ES8400071(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of ES515429A0 publication Critical patent/ES515429A0/es
Publication of ES8400071A1 publication Critical patent/ES8400071A1/es
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
    • 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
    • C01B25/16—Oxyacids of phosphorus; Salts thereof
    • C01B25/18—Phosphoric acid
    • C01B25/22—Preparation by reacting phosphate-containing material with an acid, e.g. wet process
    • C01B25/2208—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with an acid or a mixture of acids other than sulfuric acid
    • C01B25/2216—Preparation by reacting phosphate-containing material with an acid, e.g. wet process with an acid or a mixture of acids other than sulfuric acid with nitric acid or nitrous vapours in aqueous medium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Fertilizers (AREA)
  • Removal Of Specific Substances (AREA)
  • Saccharide Compounds (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Macromonomer-Based Addition Polymer (AREA)

Abstract

PROCEDIMIENTO PARA LA OBTENCION DE ACIDO FOSFORICO BRUTO EXENTO DE CADMIO.CONSISTE EN DISGREGAR EL FOSFATO BRUTO CON ACIDO NITRICO, ELIMINAR LA CANTIDAD PRINCIPAL DEL NITRATO CALCICO FORMADO DE MANERA QUE QUEDE UN ACIDO FOSFORICO ACUOSO QUE CONTIENE CADMIO, CON CONTENIDOS DE APROXIMADAMENTE 30-35 DE HNO3; 15-20 DE P2O5 Y 7-10 DE 60. ESTE ACIDO FOSFORICO, SE AJUSTA CON AMONIACO A PH DE 0,9 A 1,5, SE AÑADE SULFURO DE HIDROGENO Y SE SEPARA RESPECTO DEL ACIDO FOSFORICO BRUTO DE PRECIPITADO DEPOSITADO QUE CONTIENE SULFURO DE CADMIO. EL PRECIPITADO SE SEPARA POR CENTRIFUGACION.
ES515429A 1981-09-03 1982-09-01 "procedimiento para la obtencion de acido fosforico bruto exento de cadmio". Expired ES8400071A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19813134847 DE3134847A1 (de) 1981-09-03 1981-09-03 "verfahren zur gewinnung cadmium-freier rohphosphorsaeure"

Publications (2)

Publication Number Publication Date
ES515429A0 ES515429A0 (es) 1983-11-01
ES8400071A1 true ES8400071A1 (es) 1983-11-01

Family

ID=6140746

Family Applications (1)

Application Number Title Priority Date Filing Date
ES515429A Expired ES8400071A1 (es) 1981-09-03 1982-09-01 "procedimiento para la obtencion de acido fosforico bruto exento de cadmio".

Country Status (4)

Country Link
EP (1) EP0074556B1 (es)
DE (2) DE3134847A1 (es)
ES (1) ES8400071A1 (es)
NO (1) NO822973L (es)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3212675A1 (de) * 1982-04-05 1983-10-06 Hoechst Ag Verfahren zur abtrennung von schwermetallverbindungen aus zwischenprodukten der fabrikation von phosphorduengemitteln
DE3327394A1 (de) * 1982-05-18 1985-02-14 Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim Verfahren zum entfernen von cadmium aus sauren, insbesondere p(pfeil abwaerts)2(pfeil abwaerts)o(pfeil abwaerts)5(pfeil abwaerts)-haltigen loesungen
DE3330224A1 (de) * 1983-08-22 1985-03-14 Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim Verfahren zur entfernung von cadmium und zink aus sauren phosphat- und nitrathaltigen loesungen
DE3622597A1 (de) * 1986-07-04 1988-01-07 Budenheim Rud A Oetker Chemie Verfahren zur faellung und abtrennung von cadmiumsulfid aus den raffinaten der phosphorsaeurereinigung
NO164768C (no) * 1988-03-04 1990-11-14 Norsk Hydro As Fremgangsmaate for fjerning av tungmetaller, spesielt kadmium, fra fosforsyreholdige loesninger.
DE3826981A1 (de) * 1988-08-09 1990-02-15 Hoechst Ag Verfahren zur aufarbeitung von staeuben, die bei der elektrothermischen phosphorherstellung anfallen
DE4010778A1 (de) * 1989-05-26 1990-11-29 Budenheim Rud A Oetker Chemie Verbessertes verfahren zum entfernen von cadmium-ionen aus nassverfahrensphosphorsaeure
JP4316946B2 (ja) * 2003-07-01 2009-08-19 日本化学工業株式会社 高純度リン酸及びその製造方法
DE102014006278B3 (de) * 2014-05-02 2015-02-26 Remondis Aqua Gmbh & Co. Kg Verfahren zur Reinigung von Roh-Phosphorsäure (z.B. MGA-Säure) durch Zugabe von Aschen aus Abfall-Verbrennungsanlagen umfassend die Gewinnung von reiner Phosphorsäure, Kalziumsulfat, wasserlöslichen Kalziumhydrogenphosphaten und Metallsalz-Lösung
FR3039830B1 (fr) * 2015-08-03 2018-09-07 Ocp Sa Procede de fabrication d'un engrais a base de phosphate d'ammonium presentant une teneur reduite en cadmium

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7004350A (es) * 1970-03-26 1971-09-28 Stamicarbon
DE2422902A1 (de) * 1974-05-11 1975-11-20 Kalk Chemische Fabrik Gmbh Verfahren zur herstellung von cadmiumsulfid aus phosphorsaeure
DE2447390C3 (de) * 1974-10-04 1983-11-17 Hoechst Ag, 6230 Frankfurt Verfahren zur Reinigung von Naßphosphorsäure
SE418845B (sv) * 1979-05-10 1981-06-29 Boliden Ab Forfarande for rening av vatprocessfosforsyra

Also Published As

Publication number Publication date
ES515429A0 (es) 1983-11-01
EP0074556B1 (de) 1985-11-06
EP0074556A1 (de) 1983-03-23
NO822973L (no) 1983-03-04
DE3267309D1 (en) 1985-12-12
DE3134847A1 (de) 1983-03-17

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