(19)
(11) EP 0 225 548 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
08.06.1988 Bulletin 1988/23

(43) Date of publication A2:
16.06.1987 Bulletin 1987/25

(21) Application number: 86116468

(22) Date of filing: 27.11.1986
(84) Designated Contracting States:
DE FR GB IT

(30) Priority: 02.12.1985 SE 8505660

(71) Applicant: ASEA AB
 ()

(72) Inventors:
  • Rappinger, Bo
     ()
  • Stenkvist, Sven-Einar
     ()

   


(54) Brick for a bottom electrode, a rear lining or a hearth connection


(57) Brick for a bottom electrode, a rear lining or a hearth connection for a.d.c. arc furnace. According to the invention the brick consist of a porous material which has been impregnated by means of immersion into and/or spraying with an organic fluid, such as pitch, tar or a suspension of graphite, soot or the like, or synthetic resin, whereafter the brick has been coked, for example at a temperature of 350°C, thus creating electric current carrying paths containing coal which paths render the brick electrically conductive.






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