Process for producing phosphorus pentoxide

Details Process for producing phosphorus pentoxide Process for producing phosphorus pentoxide

1982-05-10

1983-12-13

Heller, Gregory A.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

423167, 423318, 423322, 423323, C01B 2512, C01B 2516, C01B 2501, C01B 2502

Patent

active

044204663

ABSTRACT:
A process for producing phosphorus pentoxide from phosphate ore includes the mixing and formulation of a feed mixture of phosphate ore with lime and solid carbonaceous material in amounts to produce a feed mixture having a CaO/SiO.sub.2 mole ratio greater than about 8.0. This mixture is formed into pellets which are then exposed to radiation eminating from an oxidation zone, preferably within a rotary type kiln, in order to heat the pellets to a temperature sufficient to reduce the phosphate by reaction with the solid carbonaceous material to form elemental phosphorus vapor without substantial melting of the pellets. Sufficient oxygen-containing gas is provided to cause oxidation of the elemental phosphorus vapor within the oxidation zone to produce phosphorus pentoxide.

REFERENCES:
patent: 1655981 (1978-01-01), Barr
patent: 3235330 (1966-02-01), Lapple
patent: 3241917 (1966-03-01), Lapple
patent: 4351809 (1982-09-01), Megy et al.
patent: 4351813 (1982-09-01), Megy et al.

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