SULFIDE OXIDATION PROCESS FOR PRODUCTION OF MOLYBDENUM OXIDES FROM MOLYBDENITE

摘要

A looping method for production of MoO2, the method including reacting molybdenite feed with a substantially stoichiometric mixture comprising MoO3 and oxygen in a first furnace to produce MoO2 and SO2, removing a first portion of the MoO2 from the first furnace, transferring a second portion of the MoO2 from the first furnace to a second furnace, reoxidizing of the transferred portion of the MoO2 in the second furnace to MoO3; and looping the MoO3 from the second furnace to the first furnace for use as an oxidizing agent.

主权项

1. A pyrometallurgical method for production of molybdenum(IV) oxide, the method comprising:
(a) contacting a molybdenite feed with oxygen in a furnace comprising a high temperature zone, wherein an amount of the oxygen is substantially stoichiometric; and (b) reacting the molybdenite feed with the oxygen to produce molybdenum(IV) oxide and sulfur(IV) oxide, wherein complete desulfurization of the molybdenite feed is accomplished in the high temperature zone at a temperature of about 1,000 to about 1,500° C. with a residence time of about 0.1 to about 40 seconds.