GB638061A - Method for manufacturing an improved granular fertilizer containing ammonium nitrateand calcium carbonate - Google Patents
Method for manufacturing an improved granular fertilizer containing ammonium nitrateand calcium carbonateInfo
- Publication number
- GB638061A GB638061A GB262341A GB262341A GB638061A GB 638061 A GB638061 A GB 638061A GB 262341 A GB262341 A GB 262341A GB 262341 A GB262341 A GB 262341A GB 638061 A GB638061 A GB 638061A
- Authority
- GB
- United Kingdom
- Prior art keywords
- calcium carbonate
- grains
- mixed
- ammonium nitrate
- drum
- 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
- C05C1/02—Granulation; Pelletisation; Stabilisation; Colouring
Abstract
<PICT:0638061/III/1> A non-caking fertilizer containing ammonium nitrate and calcium carbonate is made by flowing moist grains of ammonium nitrate, which may or may not be mixed with calcium carbonate, in contact with a parallel flow of air or other gases heated to 150-250 DEG C., the grains being subsequently cooled and coated with calcium carbonate by mixing, e.g. at about 25 DEG C., with a larger quantity of calcium carbonate than will adhere to the grains and removing the excess calcium carbonate. According to the drawing, molten ammonium nitrate is mixed with ground marl in vessel 1 and solidified and granulated on a cooling roller 2. The product, containing 1 to 5 per cent water, is conducted through a drying drum 3 in parallel flow with hot gases, at 200 DEG C., drawn from a furnace 8. The product, still containing 0.3 to 1.0 per cent moisture, is cooled to 40-50 DEG C. in a drum 4 by a countercurrent flow of atmospheric air and is mixed in a drum 5 with a continuous flow 12 of dried and ground marl (from 7) equal to two or three times the amount which is caused to adhere to the grains. Steam is introduced at 10, if necessary, to maintain adequate moisture content during the coating process, and the fertilizer is then sieved at 6, excess marl being returned to vessel 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB262341A GB638061A (en) | 1941-02-26 | 1941-02-26 | Method for manufacturing an improved granular fertilizer containing ammonium nitrateand calcium carbonate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB262341A GB638061A (en) | 1941-02-26 | 1941-02-26 | Method for manufacturing an improved granular fertilizer containing ammonium nitrateand calcium carbonate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB638061A true GB638061A (en) | 1950-05-31 |
Family
ID=9742809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB262341A Expired GB638061A (en) | 1941-02-26 | 1941-02-26 | Method for manufacturing an improved granular fertilizer containing ammonium nitrateand calcium carbonate |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB638061A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204731A (en) * | 2012-01-13 | 2013-07-17 | 南京理工大学 | Inorganic coated-type sustained-release chemical fertilizer and preparation method thereof |
-
1941
- 1941-02-26 GB GB262341A patent/GB638061A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103204731A (en) * | 2012-01-13 | 2013-07-17 | 南京理工大学 | Inorganic coated-type sustained-release chemical fertilizer and preparation method thereof |
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