BG50723A3 - Urea- based granules and method for their preparation - Google Patents
Urea- based granules and method for their preparationInfo
- Publication number
- BG50723A3 BG50723A3 BG057900A BG5790082A BG50723A3 BG 50723 A3 BG50723 A3 BG 50723A3 BG 057900 A BG057900 A BG 057900A BG 5790082 A BG5790082 A BG 5790082A BG 50723 A3 BG50723 A3 BG 50723A3
- Authority
- BG
- Bulgaria
- Prior art keywords
- particles
- core
- granules
- granulator
- granule
- Prior art date
Links
- 239000008187 granular material Substances 0.000 title abstract 8
- 239000002245 particle Substances 0.000 abstract 7
- 239000007787 solid Substances 0.000 abstract 2
- 240000007594 Oryza sativa Species 0.000 abstract 1
- 235000007164 Oryza sativa Nutrition 0.000 abstract 1
- 239000012943 hotmelt Substances 0.000 abstract 1
- 235000009566 rice Nutrition 0.000 abstract 1
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fertilizers (AREA)
- Glanulating (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Гранулите се използват в селското стопанство за наторяване на оризови полета. Имат среден диаметър над 7 мм и якост на натиск от 20 до 40 кг при непрекъснат затворен технологичен процес на работа. Гранулите се състоят от слоеве стопилка около частица, образуваща ядрото им, като 90-95% от получените гранули са 0,8-1,2 пъти от средното тегло на гранулите. Получават се чрез подаване на топла стопилка или разтвор върху твърди частици във въртящ се наклонен гранулатор. Доставянето на твърди частици в гранулатора се извършва с по-малка част от частици, образуващи ядрото на гранулата, и с по-голяма част от частици, връщащи се за рециркулация. Съотношението между гранулите, напускащи гранулатора, и частиците, образуващи ядрото, се поддържа под 3. Тегловното съотношение между частиците за рециркулиране и частиците, образуващи ядрото на гранулата, е от 1:50 до 1:5. Процесът е затворен и двуетапен. 6 претенции, 2 фигуриThe granules are used in agriculture to fertilize rice fields. They have an average diameter of more than 7 mm and a compressive strength of 20 to 40 kg in a continuous closed technological process of operation. Granules consist of layers of melt around a particle forming their core, with 90-95% of the resulting granules being 0.8-1.2 times the average granule weight. They are produced by feeding a hot melt or solution onto solid particles in a rotating inclined granulator. The delivery of solids to the granulator is done with a smaller fraction of particles forming the core of the granule and a larger fraction of particles returning for recirculation. The ratio between the granules leaving the granulator and the particles forming the core is kept below 3. The weight ratio between the recycle particles and the particles forming the core of the granule is from 1:50 to 1:5. The process is closed and two-stage. 6 claims, 2 figures
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NO813091A NO150038C (en) | 1981-09-11 | 1981-09-11 | UNREBASED GRANULES AND PROCEDURES FOR THE PREPARATION OF SUCH GRANULES |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BG50723A3 true BG50723A3 (en) | 1992-10-15 |
Family
ID=19886218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BG057900A BG50723A3 (en) | 1981-09-11 | 1982-09-03 | Urea- based granules and method for their preparation |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS5861828A (en) |
| KR (1) | KR840001436A (en) |
| BG (1) | BG50723A3 (en) |
| NO (1) | NO150038C (en) |
| PH (1) | PH17938A (en) |
| RO (1) | RO85786B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002037689A (en) * | 2000-07-24 | 2002-02-06 | Chisso Corp | Coated covering granular fertilizer |
| JP2012046382A (en) * | 2010-08-27 | 2012-03-08 | Sumitomo Chemical Co Ltd | Method for producing resin-coated granular fertilizer |
-
1981
- 1981-09-11 NO NO813091A patent/NO150038C/en unknown
-
1982
- 1982-09-02 PH PH27811A patent/PH17938A/en unknown
- 1982-09-03 BG BG057900A patent/BG50723A3/en unknown
- 1982-09-09 RO RO108605A patent/RO85786B/en unknown
- 1982-09-10 JP JP57156922A patent/JPS5861828A/en active Granted
- 1982-09-11 KR KR1019820004123A patent/KR840001436A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0359037B2 (en) | 1991-09-09 |
| RO85786B (en) | 1984-11-30 |
| RO85786A (en) | 1984-11-25 |
| NO150038C (en) | 1984-08-08 |
| NO150038B (en) | 1984-04-30 |
| JPS5861828A (en) | 1983-04-13 |
| PH17938A (en) | 1985-02-11 |
| NO813091L (en) | 1983-03-14 |
| KR840001436A (en) | 1984-05-07 |
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