Flash roasting of molybdenum sulfide concentrates in a slagging

Details Flash roasting of molybdenum sulfide concentrates in a slagging Flash roasting of molybdenum sulfide concentrates in a slagging

1984-02-27

1985-11-26

Carter, H. T.

Chemistry of inorganic compounds

Treating mixture to obtain metal containing compound

Group vib metal

423 53, C01G 3902

Patent

active

045553874

ABSTRACT:
A process and system are provided for flash-roasting molybdenum sulfide containing slag-forming constituents. The process comprises feeding a pneumatically suspended stream of particulate molybdenum sulfide and a mixture of fuel and oxidizing gases through a nozzle into a confined furnace chamber, the fuel gas-oxidizing gas mixture exiting from the nozzle being ignited to provide a flame thereof, the flame being maintained at a condition to provide a temperature in the furnace chamber sufficient to oxidize the molybdenum sulfide and form a volatile gas comprising molybdenum trioxide. The temperature is at least sufficient to melt the slag-forming constituents such that the slag formed is sufficiently liquid to separate from the gaseous mixture and collect at a selected portion of said chamber for removal therefrom. The resulting gases in the volatile molybdenum trioxide are caused to flow from the furnace chamber to and through a condensing chamber, the temperature of the condensing chamber being controlled to condense the volatilized molybdenum trioxide and separate it from the off-gases.

REFERENCES:
patent: 1426602 (1922-08-01), Robertson
patent: 3139326 (1964-06-01), Costello
patent: 3848050 (1974-11-01), Jamal

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