Process for producing phosphorus pentoxide or phosphorus or phos

Details Process for producing phosphorus pentoxide or phosphorus or phos Process for producing phosphorus pentoxide or phosphorus or phos

1981-05-20

1982-09-28

Vertiz, O. R.

Chemistry of inorganic compounds

Phosphorus or compound thereof

Oxygen containing

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

Patent

active

043518133

ABSTRACT:
A process for producing phosphorus pentoxide from phosphate ores in a rotary-type kiln includes heating, by exposure to a flame, a porous bed comprising phosphate ore and solid carbonaceous material to a temperature sufficient to reduce the phosphorus pentoxide to phosphorus vapor. The phosphorus vapor is oxidized in an oxidation zone disposed over the porous bed to heat the porous bed. An inert gas is used to purge the porous bed of carbon monoxide formed during the reduction reaction to drive the reduction reaction more rapidly toward complete reduction of the phosphorus pentoxide and to inhibit oxidation of the phosphorus vapor and carbonaceous material within the porous bed.

REFERENCES:
patent: 3235330 (1966-02-01), Lapple
patent: 3241917 (1966-03-01), Lapple
patent: 3723608 (1973-03-01), Meurer et al.
patent: 4056601 (1977-11-01), Volfkovitch et al.

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