Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Reexamination Certificate
2005-02-10
2008-10-14
Kastler, Scott (Department: 1793)
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
C075S010350, C075S010460
Reexamination Certificate
active
07435281
ABSTRACT:
A pyrometallurgic process for the treatment of post-steelwork residues, comprises the following phases: preparing a furnace (1) of the electric type, suitable for the introduction of the residues; preparing the residues, for example in a hopper with the possibility of mixing with additives and reaction elements; introducing the residues, together with suitable additives and chemical reagents, into the furnace (1); introducing directly into the slag, by means of lances (4), additives, flushing and reaction elements to correct the composition of the slag (7); reacting the residues with the slag (7) to obtain: a) separation of the liquid metallic phases which are added to the metal bath (6) to form a sellable liquid metal; b) separation of the metallic volatile elements in vapour phase which, when transferred to the free zone of the furnace (1) recombine with the oxygen for the formation of oxides and consequently of powder.
REFERENCES:
patent: 4372780 (1983-02-01), Madelin
patent: 4725307 (1988-02-01), Harada
patent: 5282881 (1994-02-01), Baldock et al.
patent: 6136059 (2000-10-01), Zoppi
patent: 28 29 370 (1979-01-01), None
patent: 36 16 868 (1986-12-01), None
patent: 0 007 856 (1980-02-01), None
patent: 0 605 378 (1994-07-01), None
patent: 0 716 153 (1996-06-01), None
patent: 57-120635 (1982-07-01), None
patent: WO 00/75385 (2000-12-01), None
EPO Search Report, no date.
Database WPI, Section Ch, week 198235, Derwent Publication Ltd.,London, GB; AN 1982-73727E, XP-002330885-& JP 57-120639 Jul. 27, 1982 Abstract.
Database WPI, Section Ch, week 198449,Derwent Publication Ltd., London, GB; AN 1984, -306259, XP002330886, & SU 1 089 154 Apr. 30, 1984—Abstract, Dec. 1984.
Di Sante Loredana
Pozzi Marcello
Raggio Carlo
Costigan James V.
Hedman & Costigan ,P.C.
Kastler Scott
Techint Compagnia Tecnica Internazionale S.p.A.
LandOfFree
Pyrometallurgic process for the treatment of steelwork residues does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Pyrometallurgic process for the treatment of steelwork residues, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Pyrometallurgic process for the treatment of steelwork residues will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4017078