Title:
【発明の名称】電気アーク炉及びとりべ炉のための冷却式屋根
Document Type and Number:
Japanese Patent JP2002503797
Kind Code:
A
Abstract:
A cooled roof for electric arc furnaces (20) or ladle furnaces (29). The roof being used as a covering element and including a cooling system comprising tubes fed with cooling fluid. The roof including at least a central aperture (25) for the positioning and movement of the electrodes (30) and at least a peripheral aperture (14) for the aspiration and discharge of fumes. The aperture (14) being connected to intake systems. The roof including two single-block cooling structures, inner (1) and outer (12), consisting of respective bent tubes (15, 16) developing according to adjacent and superimposed rings or spirals. The inner (11) and outer (12) cooling structures being associated with one another at least in correspondence with the respective bases facing towards the inside of the furnace (20, 29). Between the inner cooling structure (11) and the outer cooling structure (12) there being defined an annular interspace (13) in which the fumes circulate in an annular direction and slow down. The annular interspace (13) communicating with the peripheral aperture. The inner cooling structure (11) including fume-transit interstices connecting the inside of the furnace (20, 29) with the annular interspace (13).
Inventors:
Poloni, Alfred
Public sevic, milorade
Zenshini, Giani
Chichenko, Peter
Della Negra, Angelico
Public sevic, milorade
Zenshini, Giani
Chichenko, Peter
Della Negra, Angelico
Application Number:
JP2000531700A
Publication Date:
February 05, 2002
Filing Date:
February 08, 1999
Export Citation:
Assignee:
Daniel and Sea Officine Mechanic SP
International Classes:
F27D1/18; F27D17/00; F27B3/24; (IPC1-7): F27D1/18; F27B3/24; F27D17/00
Attorney, Agent or Firm:
Warren G. Simor