FR2444014A1 - PROCESS FOR TRANSFORMING A FERTILIZER CONTAINING P2O5 A RESIDUAL SLUDGE FROM THE PURIFICATION OF PHOSPHORIC ACID BY WET - Google Patents

PROCESS FOR TRANSFORMING A FERTILIZER CONTAINING P2O5 A RESIDUAL SLUDGE FROM THE PURIFICATION OF PHOSPHORIC ACID BY WET

Info

Publication number
FR2444014A1
FR2444014A1 FR7930831A FR7930831A FR2444014A1 FR 2444014 A1 FR2444014 A1 FR 2444014A1 FR 7930831 A FR7930831 A FR 7930831A FR 7930831 A FR7930831 A FR 7930831A FR 2444014 A1 FR2444014 A1 FR 2444014A1
Authority
FR
France
Prior art keywords
transforming
phosphoric acid
purification
wet
fertilizer containing
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.)
Pending
Application number
FR7930831A
Other languages
French (fr)
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Uhde GmbH
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 DE2854433A external-priority patent/DE2854433C2/en
Priority claimed from DE19792926588 external-priority patent/DE2926588A1/en
Application filed by Uhde GmbH filed Critical Uhde GmbH
Publication of FR2444014A1 publication Critical patent/FR2444014A1/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B5/00—Thomas phosphate; Other slag phosphates

Abstract

Procédé pour transformer la boue résiduaire provenant de la purification de l'acide phosphorique par voie humide en un engrais contenant du P2 O5 . La boue résiduaire est ajoutée à des scories d'aciérie, en particulier à des scories provenant de convertisseurs à insufflation d'oxygène pur, en une quantité telle que le mélange sec ait une teneur en P2 O5 comprise entre 3 et 9 %. A partir d'un produit très gênant parce que très polluant on fait ainsi un produit de valeur pour la fertilisation des terres.A process for transforming the sludge from the wet purification of phosphoric acid into a fertilizer containing P2 O5. The residual sludge is added to steelworks slag, in particular to slag from converters with pure oxygen blowing, in an amount such that the dry mixture has a P 2 O 5 content of between 3 and 9%. From a product that is very troublesome because it pollutes a lot, we thus make a valuable product for soil fertilization.

FR7930831A 1978-12-16 1979-12-17 PROCESS FOR TRANSFORMING A FERTILIZER CONTAINING P2O5 A RESIDUAL SLUDGE FROM THE PURIFICATION OF PHOSPHORIC ACID BY WET Pending FR2444014A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2854433A DE2854433C2 (en) 1978-12-16 1978-12-16 Process for the preparation of a P? 2? O? 5? -Containing fertilizer
DE19792926588 DE2926588A1 (en) 1979-06-30 1979-06-30 Phosphorus fertiliser prodn. from steel-making slag - by mixing with sludge from wet-process phosphoric acid mfr.

Publications (1)

Publication Number Publication Date
FR2444014A1 true FR2444014A1 (en) 1980-07-11

Family

ID=25776896

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7930831A Pending FR2444014A1 (en) 1978-12-16 1979-12-17 PROCESS FOR TRANSFORMING A FERTILIZER CONTAINING P2O5 A RESIDUAL SLUDGE FROM THE PURIFICATION OF PHOSPHORIC ACID BY WET

Country Status (4)

Country Link
FR (1) FR2444014A1 (en)
GB (1) GB2043617B (en)
IT (1) IT1126553B (en)
NL (1) NL7908791A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680936A1 (en) * 1994-05-02 1995-11-08 Hochwald-Ton-GmbH Method for processing sewage sludge
EP0850901A2 (en) * 1996-12-31 1998-07-01 Sollac Process for the obtention of a calcium phosphatic amendment and amendment obtainable thereby

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE372565C (en) * 1919-11-06 1923-03-29 Plauson S Forschungsinstitut G Process for improving fertilizers from insoluble phosphates
DE594902C (en) * 1932-06-22 1934-03-24 Hubert Kappen Dr Process for the production of slag phosphates by the wet route
DE583577C (en) * 1932-02-03 1934-03-24 Hubert Kappen Dr Process for the production of phosphoric acid fertilizers from blast furnace slag or similarly composed silicate slags
DE1033683B (en) * 1957-02-16 1958-07-10 Albert Ag Chem Werke Process for the production of granulated phosphate fertilizers
GB1136607A (en) * 1965-01-07 1968-12-11 Thomasphosphatfabriken G M B H Improvements in or relating to fertilisers
GB1478749A (en) * 1976-03-15 1977-07-06 Fisons Ltd Fertilizer composition containing slag and phosphate rock

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE372565C (en) * 1919-11-06 1923-03-29 Plauson S Forschungsinstitut G Process for improving fertilizers from insoluble phosphates
DE583577C (en) * 1932-02-03 1934-03-24 Hubert Kappen Dr Process for the production of phosphoric acid fertilizers from blast furnace slag or similarly composed silicate slags
DE594902C (en) * 1932-06-22 1934-03-24 Hubert Kappen Dr Process for the production of slag phosphates by the wet route
DE1033683B (en) * 1957-02-16 1958-07-10 Albert Ag Chem Werke Process for the production of granulated phosphate fertilizers
GB1136607A (en) * 1965-01-07 1968-12-11 Thomasphosphatfabriken G M B H Improvements in or relating to fertilisers
GB1478749A (en) * 1976-03-15 1977-07-06 Fisons Ltd Fertilizer composition containing slag and phosphate rock

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0680936A1 (en) * 1994-05-02 1995-11-08 Hochwald-Ton-GmbH Method for processing sewage sludge
EP0850901A2 (en) * 1996-12-31 1998-07-01 Sollac Process for the obtention of a calcium phosphatic amendment and amendment obtainable thereby
FR2757849A1 (en) * 1996-12-31 1998-07-03 Lorraine Laminage PROCESS FOR PREPARING A CALCIUM PHOSPHATE AMENDMENT
EP0850901A3 (en) * 1996-12-31 1999-04-07 Sollac Process for the obtention of a calcium phosphatic amendment and amendment obtainable thereby

Also Published As

Publication number Publication date
IT1126553B (en) 1986-05-21
IT7927976A0 (en) 1979-12-07
NL7908791A (en) 1980-06-18
GB2043617A (en) 1980-10-08
GB2043617B (en) 1983-05-05

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