Réaction #3844

ord-f05182efc7494917864a6ea459070b88

Équation de réaction

N
ammonia
O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[F-]
phosphate rock
O=P(O)(O)O
phosphoric acid
O=S(=O)(O)O
sulfuric acid
→
O=P12OP3(=O)OP(=O)(O1)OP(=O)(O2)O3
P2O5

Réactifs

N
ammonia
O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].O=P([O-])([O-])[O-].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[F-]
phosphate rock
O=P(O)(O)O
phosphoric acid
O=S(=O)(O)O
sulfuric acid

Réactifs

Aucun

Conditions de réaction

Conditions détaillées
See reaction.notes.procedure_details.

Mode opératoire

In 1970, Richmond et al ('641 supra) reacted phosphate rock with phosphoric acid and then with sulfuric acid. The resulting acidulate was subsequently neutralized with anhydrous ammonia to produce a 7-21-0 (N--P2O5 --K2O) grade slurrey fertilizer. In later investigations Pottgiesser et al ('162 supra) produced a 13.5-6-0 (N--P2O5K2O) grade slurry by reacting nitric acid with phosphate rock and subsequently feeding the resulting slurry into a body of preneutralized solution maintained at pH 7-10 by addition thereto of aqua ammonia.

Source

DOI: 10.6084/m9.figshare.5104873.v1Brevet: USH0000425uspto-grants-1988_02