EP 0046721 A1 19820303 - Nozzle for oxygen-injection lances used in the decarburisation of pig iron, in particular chromium pig iron.
Title (en)
Nozzle for oxygen-injection lances used in the decarburisation of pig iron, in particular chromium pig iron.
Title (de)
Einblasdüse für Sauerstofflanzen zum Entkohlen von Roheisen, insbesondere chromhaltigen Roheisens.
Title (fr)
Buse pour lance d'injection d'oxygène pour la décarburation des fontes et application à la décarburation des fontes au chrome.
Publication
Application
Priority
FR 8018846 A 19800826
Abstract (en)
[origin: ES268630U] A nozzle is disclosed for use in the decarburization of molten pig iron by means of a jet of oxygen from a lance provided with such nozzle. The nozzle according to the invention is characterized by a divergent portion which, beyond the neck, has a frustoconical part, with an apex angle of between 60 DEG and 70 DEG and preferably between 62 DEG and 66 DEG , and wherein an angle of 65 DEG is preferred. The nozzle according to the invention can be used in particular for the decarburization of chromium containing pig iron and makes it possible to achieve very high chromium and iron yields.
Abstract (fr)
La nouvelle buse qui fait l'objet de l'invention concerne la décarburation de fontes liquides au moyen d'un jet d'oxygène issu d'une lance équipée d'une telle buse. La buse suivant l'invention se caractérise par un divergent qui comporte au-delà du col une partie tronconique d'angle au sommet compris entre 60 et 70° et, de préférence, entre 62 et 66°. L'angle de 65° est proche de l'optimum. La buse suivant l'invention s'applique en particulier à la décarburation des fontes au chrome et permet l'obtention de rendements très élevés en chrome et en fer.
IPC 1-7
IPC 8 full level
C21C 5/00 (2006.01); C21C 5/46 (2006.01); C21C 5/48 (2006.01); C21C 7/072 (2006.01)
CPC (source: EP KR US)
C21C 5/005 (2013.01 - EP US); C21C 5/4606 (2013.01 - EP US); C21C 5/48 (2013.01 - KR)
Citation (search report)
- GB 800833 A 19580903 - BRITISH OXYGEN CO LTD
- FR 1476043 A 19670407
- US 3559974 A 19710202 - BERRY WALTER V
Designated contracting state (EPC)
AT BE DE GB IT SE
DOCDB simple family (publication)
EP 0046721 A1 19820303; EP 0046721 B1 19840711; AT E8413 T1 19840715; AU 7449181 A 19820304; BR 8105366 A 19820511; CA 1177642 A 19841113; DE 3164731 D1 19840816; ES 268630 U 19830516; ES 268630 Y 19831201; FI 66432 B 19840629; FI 66432 C 19841010; FI 812612 L 19820227; FR 2489368 A1 19820305; IN 154747 B 19841215; JP S5773113 A 19820507; JP S5952202 B2 19841218; KR 830006442 A 19830924; NO 812881 L 19820301; SU 1199203 A3 19851215; TR 21290 A 19840228; US 4455166 A 19840619; YU 205781 A 19840229; ZA 815877 B 19820825; ZW 20581 A1 19811209
DOCDB simple family (application)
EP 81420127 A 19810825; AT 81420127 T 19810825; AU 7449181 A 19810825; BR 8105366 A 19810824; CA 384589 A 19810825; DE 3164731 T 19810825; ES 268630 U 19810825; FI 812612 A 19810825; FR 8018846 A 19800826; IN 941CA1981 A 19810824; JP 13219781 A 19810825; KR 810003101 A 19810825; NO 812881 A 19810825; SU 3323296 A 19810825; TR 2129081 A 19810825; US 29281881 A 19810814; YU 205781 A 19810825; ZA 815877 A 19810825; ZW 20581 A 19810825