GB1490712A - Method for the production of fertilizer materials - Google Patents
Method for the production of fertilizer materialsInfo
- 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
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).
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)
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)
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 |
-
1974
- 1974-10-08 AT AT806774A patent/AT344746B/en not_active IP Right Cessation
- 1974-10-09 JP JP49115717A patent/JPS5933525B2/en not_active Expired
- 1974-10-09 PL PL17472874A patent/PL100839B1/en unknown
- 1974-10-10 GB GB4395874A patent/GB1490712A/en not_active Expired
- 1974-10-10 FI FI294974A patent/FI58485C/en active
- 1974-10-10 NL NL7413321A patent/NL179899C/en not_active IP Right Cessation
- 1974-10-11 FR FR7434369A patent/FR2247424B1/fr not_active Expired
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 |