Claims
- 1. A method for preparing a granular fertilizer composition comprising:
(a) reacting a phosphoric acid stream with ammonia in a pipe cross reactor to form a molten slurry, said phosphoric acid stream comprising greater than 0.6 wt. % magnesium oxide, based upon the total weight of the reactant stream; and (b) discharging said molten slurry into a granulator.
- 2. A method according to claim 1 wherein said granular fertilizer composition comprises monoammonium phosphate.
- 3. A method according to claim 1 wherein said granular fertilizer composition comprises diammonium phosphate.
- 4. A method according to claim 1 wherein said reactant stream comprises at least 0.7 wt. % magnesium oxide.
- 5. A method according to claim 1 wherein said reactant stream comprises at least 0.8 wt. % magnesium oxide.
- 6. A method according to claim 1 wherein said reactant stream comprises at least 1.0 wt. % magnesium oxide.
- 7. A method according to claim 1 wherein said reactant stream comprises at least 1.1 wt. % magnesium oxide.
- 8. A method according to claim 1 wherein said granular fertilizer composition has a moisture content no greater than about 0.5 wt. %.
- 9. A method according to claim 1 wherein said granular fertilizer composition is substantially uncaked.
- 10. A method according to claim 1 wherein said granulator comprises a rotating granulation drum.
RELATED APPLICATION
[0001] This Application claims the benefit of U.S. Provisional Application 60/328,905 filed Oct. 11, 2001
Provisional Applications (1)
|
Number |
Date |
Country |
|
60328905 |
Oct 2001 |
US |