ES355619A1 - A Process for the Preparation of Fertilizers - Google Patents
A Process for the Preparation of FertilizersInfo
- Publication number
- ES355619A1 ES355619A1 ES355619A ES355619A ES355619A1 ES 355619 A1 ES355619 A1 ES 355619A1 ES 355619 A ES355619 A ES 355619A ES 355619 A ES355619 A ES 355619A ES 355619 A1 ES355619 A1 ES 355619A1
- Authority
- ES
- Spain
- Prior art keywords
- water
- product
- urea
- calcium sulphate
- employed
- 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
- C05C—NITROGENOUS FERTILISERS
- C05C9/00—Fertilisers containing urea or urea compounds
- C05C9/005—Post-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
An NK fertilizer containing 20-90% of urea, 2-50% of potassium chloride and 5-40% of calcium sulphate is produced by spraying a molten mixture having the same composition as the desired product, except that it contains 0-40% of calcium sulphate and 1-10% of water, on to recycle material, optionally together with one or more of urea, potassium chloride and calcium sulphate, in a rotary granulating drum. The water may be supplied separately, in admixture, or as water of crystallization. The mole ratio of urea to gypsum in the product may be 4-7 : 1. The molten mixture may have a temperature of 90-130 C. and may be sprayed at a pressure of 0À1-5À0 kg/cm.2 gauge. Granulation may be effected at a temperature of 50-100 C. for a period of 3-20 minutes. The water content of the material being granulated is preferably 1-2%. The hot granulated product may be mixed with further recycle material and cooled in a current of cold air in a further rotary drum. A total of 50-90% of recycled material (based on the total product) may be employed. Of this amount, 10-40% may be employed in the cooling step. The desired product may have a particle size of 6-12 mesh.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4247167 | 1967-07-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES355619A1 true ES355619A1 (en) | 1969-11-16 |
Family
ID=12636966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES355619A Expired ES355619A1 (en) | 1967-07-01 | 1968-06-28 | A Process for the Preparation of Fertilizers |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES355619A1 (en) |
| GB (1) | GB1189398A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1216890B (en) * | 1987-02-13 | 1990-03-14 | Palermo Enichem Agricoltura S | PROCEDURE FOR THE PRODUCTION OF CALCOUREA. |
| FI981490A (en) | 1998-06-29 | 1999-12-30 | Kemira Agro Oy | Process for making manure mixtures |
| RU2154621C1 (en) * | 2000-01-14 | 2000-08-20 | Духанин Владимир Федорович | Process for production of nitrogen-potassium fertilizers |
| CN106492489A (en) * | 2016-12-31 | 2017-03-15 | 祝洋 | A kind of flash distillation dryer for processing polymer slurries |
| US11352306B2 (en) | 2017-07-21 | 2022-06-07 | Sabic Global Technologies B.V. | Calcium sulfate urea granules and methods for producing and using the same |
| AU2020358923A1 (en) | 2019-10-03 | 2022-04-07 | SABIC Agri-Nutrients Company | Urea calcium sulfate granules and methods for producing and using the same |
| GB2588601B (en) * | 2019-10-25 | 2023-11-01 | Anglo American Woodsmith Ltd | Composite fertiliser systems |
| US20230227376A1 (en) | 2020-07-01 | 2023-07-20 | Sabic Global Technologies B.V. | Methods for producing urea calcium sulfate from moist phosphogypsum |
| US20230227379A1 (en) | 2020-07-01 | 2023-07-20 | Sabic Global Technologies B.V. | Stabilized urea calcium sulphate adduct coated with a base an urease inhibitor |
| CN113979810A (en) * | 2021-12-09 | 2022-01-28 | 湖北富邦新材料有限公司 | Anti-caking agent for plant type fertilizer, preparation method and application thereof |
-
1968
- 1968-06-28 ES ES355619A patent/ES355619A1/en not_active Expired
- 1968-07-01 GB GB3133668A patent/GB1189398A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB1189398A (en) | 1970-04-22 |
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