GB442623A - An improved process for the production of a neutral mixed fertiliser - Google Patents
An improved process for the production of a neutral mixed fertiliserInfo
- Publication number
- GB442623A GB442623A GB2098/35A GB209835A GB442623A GB 442623 A GB442623 A GB 442623A GB 2098/35 A GB2098/35 A GB 2098/35A GB 209835 A GB209835 A GB 209835A GB 442623 A GB442623 A GB 442623A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- mother liquor
- fertilizer
- liquor
- mono
- 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
- C05B1/04—Double-superphosphate; Triple-superphosphate; Other fertilisers based essentially on monocalcium phosphate
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
A neutral mixed fertilizer is obtained by forming mono-calcium phosphate into a sludge or paste with an ammonium phosphate containing mother liquor produced in the process, the molecular ratio NH3 : PO4 in this liquor being between 2 : 1 and 1 : 1, and introducing so much gaseous ammonia into the sludge &c. at a constant normal or elevated temperature that the ratio NH3 : PO4 in the liquor is kept constant, the precipitated bodies being separated and if necessary dried to form a fertilizer, while the mother liquor is returned to the process after the quantity thereof has been adjusted to the initial amount, if necessary, by evaporation. The product contains di-calcium phosphate and mono- or di-ammonium phosphate. Other fertilizer salts, such as ammonium or potassium salts, may be added to the separated precipitated bodies before or after drying, or may be introduced into the circulating mother liquor with the mono-calcium phosphate. Nitric acid may be added to the sludge or paste before the neutralization with ammonia. The solid mixture of salts obtained may be treated with gaseous ammonia before, during, or after drying.ALSO:A neutral mixed fertilizer is obtained by forming mono-calcium phosphate into a sludge or paste with an ammonium phosphate containing mother liquor produced in the process the molecular ratio NH3 : PO4 in this liquor being between 2 : 1 and 1 : 1, and introducing so much gaseous ammonia into the sludge &c. at a constant normal or elevated temperature that the ratio NH3 : PO4 in the liquor is kept constant, the precipitated bodies being separated and if necessary dried to form a fertilizer while the mother liquor is returned to the process after the quantity thereof has been adjusted to the initial amount, if necessary, by evaporation. The product contains di-calcium phosphate and mono- or di-ammonium phosphate. Other fertilizer salts, such as ammonium or potassium salts, may be added to the separated precipitated bodies before or after drying, or may be introduced into the circulating mother liquor with the monocalcium phosphate. Nitric acid may be added to the sludge or paste before the neutralization with ammonia. The solid mixture of salts obtained may be treated with gaseous ammonia before, during, or after drying.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE442623X | 1934-01-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB442623A true GB442623A (en) | 1936-02-12 |
Family
ID=6524035
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2098/35A Expired GB442623A (en) | 1934-01-27 | 1935-01-22 | An improved process for the production of a neutral mixed fertiliser |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB442623A (en) |
-
1935
- 1935-01-22 GB GB2098/35A patent/GB442623A/en not_active Expired
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