GB1490712A - Method for the production of fertilizer materials - Google Patents

Method for the production of fertilizer materials

Info

Publication number
GB1490712A
GB1490712A GB4395874A GB4395874A GB1490712A GB 1490712 A GB1490712 A GB 1490712A GB 4395874 A GB4395874 A GB 4395874A GB 4395874 A GB4395874 A GB 4395874A GB 1490712 A GB1490712 A GB 1490712A
Authority
GB
United Kingdom
Prior art keywords
caso
ions
optionally
reaction mixture
water
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
GB4395874A
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.)
Veba Oel AG
Original Assignee
Veba Oel 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 DE19732351031 external-priority patent/DE2351031C2/en
Priority claimed from DE2412503A external-priority patent/DE2412503A1/en
Application filed by Veba Oel AG filed Critical Veba Oel AG
Publication of GB1490712A publication Critical patent/GB1490712A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05B—PHOSPHATIC FERTILISERS
    • C05B11/00—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes
    • C05B11/04—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid
    • C05B11/06—Fertilisers produced by wet-treating or leaching raw materials either with acids in such amounts and concentrations as to yield solutions followed by neutralisation, or with alkaline lyes using mineral acid using nitric acid (nitrophosphates)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Fertilizers (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

1490712 Phosphoric acid; fertilizers VEBACHEMIE AG 10 Oct 1974 [11 Oct 1973 15 March 1974] 43958/74 Heading ClA Phosphoric acid suitable for the preparation of high grade fertilizers is prepared by (1) decomposing rock phosphate with HNU 3 , and optionally H 2 SO 4 , wherein the mole ratios H<SP>+</SP> : P 2 O 5 =7 to 17 : 1 and H 2 SO 4 : HNO 3 = 8 to 0 : 1; if H 2 SO 4 is present the reaction temperature is 60-110‹ C., while if H 2 SO 4 is absent, the reaction temperature is 60-100‹ C. and the concentration of HNO 3 is 35-60% by weight, (2) if necessary, introducing sufficient additional SO 4 <SP>-</SP> ions so that, after precipitation of all the Ca<SP>++</SP> ions in the reaction mixture as CaSO 4 .¢H 2 O, the reaction mixture contains 10-150 g. SO 4 - ions in solution, (3) adjusting the water content of the reaction mixture so that the waste content of the resultant nitrogenous phosphonic acid product is 20-55% by weight, optionally by recycling water from step (5), (4) separating the CaSO 4 .¢H 2 O from the liquid phase, (5) washing the CaSO 4 .¢H 2 O with water, the washings optionally being recycled to step (3), and (6) recovering the liquid phase from step (4).
GB4395874A 1973-10-11 1974-10-10 Method for the production of fertilizer materials Expired GB1490712A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19732351031 DE2351031C2 (en) 1973-10-11 1973-10-11 Process for producing phosphoric acid with high content of fertilizer nutrients
DE2412503A DE2412503A1 (en) 1974-03-15 1974-03-15 Phosphoric acid contg. high levels of fertilising elements - prepd. by digesting crude phosphate with nitric acid and adding sulphate

Publications (1)

Publication Number Publication Date
GB1490712A true GB1490712A (en) 1977-11-02

Family

ID=25765931

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4395874A Expired GB1490712A (en) 1973-10-11 1974-10-10 Method for the production of fertilizer materials

Country Status (7)

Country Link
JP (1) JPS5933525B2 (en)
AT (1) AT344746B (en)
FI (1) FI58485C (en)
FR (1) FR2247424B1 (en)
GB (1) GB1490712A (en)
NL (1) NL179899C (en)
PL (1) PL100839B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2639651C3 (en) * 1976-09-03 1986-02-13 Carl Still Gmbh & Co Kg, 4350 Recklinghausen Process for processing the residual gases from Claus plants or other sulfur production plants
JPS63147539U (en) * 1987-03-18 1988-09-28

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE788501A (en) * 1971-09-17 1973-01-02 Libbey Owens Ford Co PROCESS FOR APPLYING TIN OXIDE COATINGS TO TRANSPARENT SUBSTRATES

Also Published As

Publication number Publication date
AT344746B (en) 1978-08-10
PL100839B1 (en) 1978-11-30
ATA806774A (en) 1977-12-15
NL7413321A (en) 1975-04-15
JPS5083291A (en) 1975-07-05
FR2247424B1 (en) 1981-04-10
FR2247424A1 (en) 1975-05-09
JPS5933525B2 (en) 1984-08-16
FI58485C (en) 1981-02-10
NL179899C (en) 1986-12-01
FI294974A (en) 1975-04-12
FI58485B (en) 1980-10-31

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee