Flash roasting of molybdenum sulfide concentrates in a slagging reactor
US4555387A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 27, 1984 |
| Grant date | Nov 26, 1985 |
| Priority date | — |
| Expiry date | Feb 27, 2004 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B34/34
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.