Methods of desulphurizing fluid materials

Details Methods of desulphurizing fluid materials Methods of desulphurizing fluid materials

C - Chemistry, Metallurgy

21

C

53/105, 196/222,

C21C 1/02 (2006.01) B01D 53/34 (2006.01) B01D 53/48 (2006.01) B01D 53/52 (2006.01) C21C 7/064 (2006.01)

Patent

CA 1077682

ABSTRACT OF THE DISCLOSURE A method for desulphurizing fluid materials such as molten iron, steel, stack gases, synthetic natural gases, boiler gases, coal gasification and liquification products and the like is provided in which one of the groups rare earth fluorocarbonates, rare earth oxyfluorides and mixtures thereof, including bastnasite concentrates are reacted at low oxygen potential, with the sulphur to be removed to form one of the group consisting of rare earth sulphides, rare earth oxysul- phides and mixtures thereof. The low oxygen potential can be achieved by carrying out the reaction in the presence of vacuum, reducing gases, carbon, etc.

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