Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1981-09-25
1985-12-31
Rosenberg, P. D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 6, 75 7, 75 23, C22B 102
Patent
active
045618844
ABSTRACT:
A process for the removal of impurities from sulphidic and metallized molten copper mattes, in which in preliminary smelting of the crude metal molten sulphide and molten arsenide-antimonide phases are produced, whereby (a) the molten arsenide-antimonide matte is treated with elemental sulphur vapor to produce molten sulphide and molten arsenide phases in equilibrium with each other, that after this the conjugate melt system is sulphurated continuously under reduced pressure in order to volatilize arsenic, antimony, bismuth, lead and tin, or (b) the conjugate molten phases in equilibrium with each other are separated from each other, the thus separated arsenide matte is sulphurated further in a solid state and advantageously using elemental sulphur vapor at high partial pressure in order to volatilize arsenic, antimony, bismuth, selenium and tellurium from the matte as sulphides, and the separated molten sulphide phase is sulphurated under reduced pressure to volatilize arsenic, antimony, bismuth, lead and tin from the melt.
REFERENCES:
patent: 3450523 (1969-06-01), Socolescu
patent: 3933475 (1976-01-01), Swanson
Makipirtti Simo A. I.
Setala Pekka T.
Outokumpu Oy
Rosenberg P. D.
LandOfFree
Apparatus for removal of impurity components from sulphidic and does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus for removal of impurity components from sulphidic and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for removal of impurity components from sulphidic and will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1022880