RO85736B - Procedeu de obtinere a granulelor fertilizante cu continut de uree - Google Patents
Procedeu de obtinere a granulelor fertilizante cu continut de ureeInfo
- Publication number
- RO85736B RO85736B RO108039A RO10803982A RO85736B RO 85736 B RO85736 B RO 85736B RO 108039 A RO108039 A RO 108039A RO 10803982 A RO10803982 A RO 10803982A RO 85736 B RO85736 B RO 85736B
- Authority
- RO
- Romania
- Prior art keywords
- urea
- magnesium
- solution
- suspension
- granules
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/30—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic using agents to prevent the granules sticking together; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
-
- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D17/00—Domestic hot-water supply systems
- F24D17/0078—Recirculation systems
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fertilizers (AREA)
Abstract
Inventia se refera la un procedeu de obtinere a granulelor fertilizante cu continut de uree drept componenta principala, prin pulverizarea unei solutii apoase de uree, avînd concentratia de 85...98%, cu adaosuri de agent întîrzietor de cristalizare a ureei, precum si cu eventuale adaosuri de fertilizanti, constînd din sulfat de amoniu, fosfat mono sau biacid de amoniu în solutie sau suspensie, sub forma de picaturi fine, cu un diametru mediu cuprins cu un diametru mediu cuprins între 20 si 120 niu, într-un pat fluidizat de particule de uree, la o temperatura la care apa din solutia sau suspensia pulverizata s-a evaporat, ureea sau agentul fertilizant cu continut de uree solidificîndu-se, prin care, în scopul eliminarii tendintei de aglutinare si a îmbunatatirii proprietatilor fizico-chimice ale granulelor unitare sau triple de superfosfat, se adauga la solutia sau suspensia ce urmeaza sa fie granulata ca agent de întîrziere a cristalizarii de uree, hidroxid de magneziu sau o sare anorganica de magneziu, constînd din clorura de magneziu, sulfat de magneziu, azotat de magneziu, carbonat de magneziu sau un compus de carbonat de magneziu si hidroxid de magneziu, în proportie de 0,1...1%, de preferinta 0,4...1% în greutate, calculata ca oxid de magneziu.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL8103205 | 1981-07-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| RO85736A RO85736A (ro) | 1984-11-25 |
| RO85736B true RO85736B (ro) | 1984-11-30 |
Family
ID=19837740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| RO108039A RO85736B (ro) | 1981-07-03 | 1982-07-01 | Procedeu de obtinere a granulelor fertilizante cu continut de uree |
Country Status (28)
| Country | Link |
|---|---|
| US (1) | US4478632A (ro) |
| JP (1) | JPS5849684A (ro) |
| AT (1) | AT382610B (ro) |
| BE (1) | BE893716A (ro) |
| BR (1) | BR8203890A (ro) |
| CA (1) | CA1190059A (ro) |
| CS (1) | CS241112B2 (ro) |
| DD (1) | DD208972A5 (ro) |
| DE (1) | DE3223139C2 (ro) |
| EG (1) | EG15823A (ro) |
| ES (1) | ES513684A0 (ro) |
| FI (1) | FI71922C (ro) |
| FR (1) | FR2508894A1 (ro) |
| GB (1) | GB2103209B (ro) |
| GR (1) | GR76402B (ro) |
| HU (1) | HU190401B (ro) |
| IE (1) | IE53381B1 (ro) |
| IN (1) | IN157765B (ro) |
| IT (1) | IT1190903B (ro) |
| MX (1) | MX159933A (ro) |
| NO (1) | NO154683C (ro) |
| PL (1) | PL138045B1 (ro) |
| PT (1) | PT75172B (ro) |
| RO (1) | RO85736B (ro) |
| SE (1) | SE456643B (ro) |
| TR (1) | TR21523A (ro) |
| YU (1) | YU42778B (ro) |
| ZA (1) | ZA824698B (ro) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL8502838A (nl) * | 1985-10-17 | 1987-05-18 | Azote Sa Cie Neerlandaise | Werkwijze ter vervaardiging van ureum en ammoniumsulfaat bevattende meststofkorrels. |
| NL8700913A (nl) * | 1987-04-16 | 1988-11-16 | Nl Stikstof | Werkwijze voor het vervaardigen van kunstmestgranules. |
| AUPM383594A0 (en) * | 1994-02-11 | 1994-03-10 | Incitec Ltd | Granular urea |
| US5676729A (en) * | 1995-06-29 | 1997-10-14 | Western Industrial Clay Products, Ltd. | Particulate urea with mineral filler incorporated for hardness |
| AU2006237137B8 (en) * | 2005-04-18 | 2011-12-22 | Stamicarbon B.V. | Process for the production of urea-comprising particles |
| US11299441B2 (en) * | 2017-07-21 | 2022-04-12 | Sabic Global Technologies B.V. | Calcium sulfate urea granules and methods for producing and using the same |
| DE102021108187A1 (de) | 2021-03-31 | 2022-10-06 | Skw Stickstoffwerke Piesteritz Gmbh | Granuliertes pH-neutrales Harnstoff-Ammoniumsulfat-Düngemittel mit Ureaseinhibitor |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1581761A (en) * | 1977-06-09 | 1980-12-17 | Azote Sa Cie Neerlandaise | Urea granulation |
| NL8002912A (nl) * | 1980-05-20 | 1981-12-16 | Azote Sa Cie Neerlandaise | Werkwijze voor het maken van ureumkorrels, alsmede aldus verkregen ureumkorrels bevattende kunstmestmengsels. |
-
1982
- 1982-06-22 DE DE3223139A patent/DE3223139C2/de not_active Expired
- 1982-06-22 GR GR68517A patent/GR76402B/el unknown
- 1982-06-26 IN IN752/CAL/82A patent/IN157765B/en unknown
- 1982-06-28 IE IE1555/82A patent/IE53381B1/en not_active IP Right Cessation
- 1982-06-28 GB GB08218689A patent/GB2103209B/en not_active Expired
- 1982-06-28 AT AT0248782A patent/AT382610B/de not_active IP Right Cessation
- 1982-06-29 FR FR8211362A patent/FR2508894A1/fr active Granted
- 1982-06-30 CS CS824945A patent/CS241112B2/cs unknown
- 1982-06-30 US US06/393,656 patent/US4478632A/en not_active Expired - Fee Related
- 1982-06-30 NO NO822260A patent/NO154683C/no unknown
- 1982-06-30 TR TR21523A patent/TR21523A/xx unknown
- 1982-07-01 SE SE8204077A patent/SE456643B/sv not_active IP Right Cessation
- 1982-07-01 BE BE2/59759A patent/BE893716A/nl not_active IP Right Cessation
- 1982-07-01 PT PT75172A patent/PT75172B/pt not_active IP Right Cessation
- 1982-07-01 FI FI822346A patent/FI71922C/fi not_active IP Right Cessation
- 1982-07-01 PL PL1982237215A patent/PL138045B1/pl unknown
- 1982-07-01 ZA ZA824698A patent/ZA824698B/xx unknown
- 1982-07-01 RO RO108039A patent/RO85736B/ro unknown
- 1982-07-02 MX MX193431A patent/MX159933A/es unknown
- 1982-07-02 DD DD82241372A patent/DD208972A5/de not_active IP Right Cessation
- 1982-07-02 CA CA000406484A patent/CA1190059A/en not_active Expired
- 1982-07-02 IT IT22206/82A patent/IT1190903B/it active
- 1982-07-02 ES ES513684A patent/ES513684A0/es active Granted
- 1982-07-02 YU YU1444/82A patent/YU42778B/xx unknown
- 1982-07-02 JP JP57114102A patent/JPS5849684A/ja active Granted
- 1982-07-02 BR BR8203890A patent/BR8203890A/pt not_active IP Right Cessation
- 1982-07-02 HU HU822179A patent/HU190401B/hu not_active IP Right Cessation
- 1982-07-03 EG EG396/82A patent/EG15823A/xx active
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