Chemistry of inorganic compounds – Phosphorus or compound thereof – Oxygen containing
Patent
1982-05-10
1983-06-21
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
043893848
ABSTRACT:
A process for producing phosphorus pentoxide from phosphorus ore includes formation of a feed with a phosphate ore, silica and solid carbonaceous material in amounts to produce a feed mixture having a CaO/SiO.sub.2 mole ratio of less than about 0.5. The feed mixture is formed into agglomerated feed particles and the particles are heated by exposure to radiation eminating from an oxidation zone to a temperature sufficient to reduce the phosphate by reaction from the solid carbonaceous material to form elemental phosphorus vapor without substantial melting of the agglomerated feed particles. Sufficient oxygen-containing gas is provided to cause oxidation of the elemental phosphorus vapor within the oxidation zone to produce phosphorus pentoxide.
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Ross et al, "Preparation of Phosphoric Acid", vol. 16, No. 6, I & EC, Jun. 1924, pp. 453-566.
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Jacob et al, Redirection of Tricalcium Phosphate by Carbon I & EC, vol. 21, No. 11, Nov., 1929, pp. 1126-1132.
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Hackler Walter A.
Heller Gregory A.
Occidental Research Corporation
Vertiz O. R.
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