GB828675A - Process for making mixed fertilizers containing ammonium nitrate and calcium carbonate - Google Patents
Process for making mixed fertilizers containing ammonium nitrate and calcium carbonateInfo
- Publication number
- GB828675A GB828675A GB800/58A GB80058A GB828675A GB 828675 A GB828675 A GB 828675A GB 800/58 A GB800/58 A GB 800/58A GB 80058 A GB80058 A GB 80058A GB 828675 A GB828675 A GB 828675A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calcium carbonate
- ammonium nitrate
- mixture
- molten
- ammonium
- 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
- C05C1/00—Ammonium nitrate fertilisers
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A process for producing a mixed fertilizer containing ammonium nitrate and calcium carbonate comprises mixing calcium carbonate with molten ammonium nitrate in the presence of at least 1% of ammonium monohydrogen phosphate or potassium monohydrogen phosphate, solidifying the mixture and granulating. The process reduces the loss of nitrogen from the fertilizer following the admixture of ammonium nitrate with the calcium carbonate. Preferably the granulation is carried out by flowing the molten mixture on to a moving, flat endless belt on which it solidifies and is then granulated to the required particle size. The monohydrogen phosphates are added per se to the mixture of ammonium nitrate either beofre, with or after the calcium carbonate, but the ammonium monohydrogen phosphate may also be formed in situ in the molten ammonium nitrate by adding phosphoric acid to the nitric acid in the production of the ammonium nitrate or by adding phosphate rock to the nitric acid in the same process. Any form of calcium carbonate, including limestones with at least 95% calcium carbonate content, may be used in the process of the invention; the dolomitic limestones do not cause the high nitrogen loss experienced on adding pure or commercial calcium carbonate to ammonium nitrate. The calcium carbonate is added to molten ammonium nitrate at temperatures such that the mixture remains fluid enough to be run on to the flat belt for solidification, e.g. temperatures above 350 DEG C. Specification 791,647 is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US828675XA | 1957-01-16 | 1957-01-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB828675A true GB828675A (en) | 1960-02-24 |
Family
ID=22173943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB800/58A Expired GB828675A (en) | 1957-01-16 | 1958-01-08 | Process for making mixed fertilizers containing ammonium nitrate and calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB828675A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421878A (en) * | 1966-04-06 | 1969-01-14 | Foster Wheeler Corp | Ammonium nitrate-calcium carbonate fertilizer mixture |
| CN104761297A (en) * | 2015-04-28 | 2015-07-08 | 广东省农业科学院农业资源与环境研究所 | Multielement compound fertilizer preparation process |
-
1958
- 1958-01-08 GB GB800/58A patent/GB828675A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3421878A (en) * | 1966-04-06 | 1969-01-14 | Foster Wheeler Corp | Ammonium nitrate-calcium carbonate fertilizer mixture |
| CN104761297A (en) * | 2015-04-28 | 2015-07-08 | 广东省农业科学院农业资源与环境研究所 | Multielement compound fertilizer preparation process |
| CN104761297B (en) * | 2015-04-28 | 2016-03-09 | 广东省农业科学院农业资源与环境研究所 | A kind of preparation technology of multi-component composite fertilizer |
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