GB413636A - Processes for the production of fertilisers - Google Patents
Processes for the production of fertilisersInfo
- Publication number
- GB413636A GB413636A GB105733A GB105733A GB413636A GB 413636 A GB413636 A GB 413636A GB 105733 A GB105733 A GB 105733A GB 105733 A GB105733 A GB 105733A GB 413636 A GB413636 A GB 413636A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphuric acid
- gas liquor
- excess
- concentrated gas
- free
- 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
- C05B—PHOSPHATIC FERTILISERS
- C05B1/00—Superphosphates, i.e. fertilisers produced by reacting rock or bone phosphates with sulfuric or phosphoric acid in such amounts and concentrations as to yield solid products directly
- C05B1/06—Ammoniation of superphosphates
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
Fertilizers are produced by treating superphosphates with concentrated gas liquor in the presence of sulphuric acid in a free state or partly free and partly combined with ammonia of the gas liquor, the proportions of sulphuric acid and of the gas liquor being such that the end product consists substantially of a mixture of calcium superphosphate and neutral ammonium sulphate. The gas liquor is preferably free from cyanogen compounds which are liable to impart an undesirable colouration in the product. The process may be carried out by reacting phosphate rock with sulphuric acid in excess of the quantity required for the production of calcium superphosphate and neutralizing the excess sulphuric acid, before it is able to react with the mono-calcium phosphate formed, with concentrated gas liquor. Alternatively the excess sulphuric acid may be neutralized with an ammoniated solution of ammonium sulphate obtained from concentrated gas liquor and sulphuric acid; methods of obtaining such solutions are described.ALSO:Fertilizers are produced by treating superphosphates with concentrated gas liquor in the presence of sulphuric acid in a free state or partly free and partly combined with ammonia of the gas liquor, the proportions of sulphuric acid and of the gas liquor being such that the end product consists substantially of a mixture of calcium superphosphate and neutral ammonium sulphate. Potassium salts, e.g. potassium chloride, may be added to the fertilizers produced. The gas liquor is preferably free from cyanogen compounds which are liable to impart an undesirable colouration in the product. The process may be carried out by reacting phosphate rock with sulphuric acid in excess of the quantity required for the production of calcium superphosphate and neutralizing the excess sulphuric acid, before it is able to react with the mono-calcium phosphate formed, with concentrated gas liquor. Alternatively, the excess sulphuric acid may be neutralized with an ammoniated solution of ammonium sulphate obtained from concentrated gas liquor and sulphuric acid; methods of obtaining such solutions are described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB105733A GB413636A (en) | 1933-01-12 | 1933-01-12 | Processes for the production of fertilisers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB105733A GB413636A (en) | 1933-01-12 | 1933-01-12 | Processes for the production of fertilisers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB413636A true GB413636A (en) | 1934-07-12 |
Family
ID=9715415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB105733A Expired GB413636A (en) | 1933-01-12 | 1933-01-12 | Processes for the production of fertilisers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB413636A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680679A (en) * | 1951-02-16 | 1954-06-08 | Allied Chem & Dye Corp | Manufacture of fertilizers |
| DE1011440B (en) * | 1954-08-23 | 1957-07-04 | Albert Ag Chem Werke | Process for the production of mixed fertilizers |
| DE1022240B (en) * | 1953-06-03 | 1958-01-09 | Rumianca Spa | Process for the production of fertilizers containing phosphoric acid, nitrogen, calcium and potassium in granular form |
| US2879152A (en) * | 1951-12-27 | 1959-03-24 | Allied Chem | Manufacture of fertilizers |
| US5555588A (en) * | 1993-02-19 | 1996-09-17 | Viesehon; Karl-Heinz | Device for cleaning the interior of a wind instrument |
| US6311361B1 (en) | 1999-07-02 | 2001-11-06 | Jeffrey H. Cole | Hand-supported pivoting cleaning device |
-
1933
- 1933-01-12 GB GB105733A patent/GB413636A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2680679A (en) * | 1951-02-16 | 1954-06-08 | Allied Chem & Dye Corp | Manufacture of fertilizers |
| US2879152A (en) * | 1951-12-27 | 1959-03-24 | Allied Chem | Manufacture of fertilizers |
| DE1022240B (en) * | 1953-06-03 | 1958-01-09 | Rumianca Spa | Process for the production of fertilizers containing phosphoric acid, nitrogen, calcium and potassium in granular form |
| DE1011440B (en) * | 1954-08-23 | 1957-07-04 | Albert Ag Chem Werke | Process for the production of mixed fertilizers |
| US5555588A (en) * | 1993-02-19 | 1996-09-17 | Viesehon; Karl-Heinz | Device for cleaning the interior of a wind instrument |
| US6311361B1 (en) | 1999-07-02 | 2001-11-06 | Jeffrey H. Cole | Hand-supported pivoting cleaning device |
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