Lining for a direct-current electric arc furnace

Details Lining for a direct-current electric arc furnace Lining for a direct-current electric arc furnace

1991-08-09

1993-03-30

Reynolds, Bruce A.

Industrial electric heating furnaces

Arc furnace device

Furnace body detail

373 60, 373 65, 373 71, 373 75, F27D 100

Patent

active

051990431

ABSTRACT:
A lining for a direct-current electric-arc furnace, in which at least part of that regions of said furnace which receives the melt is provided on the inside with an electrically conductive, refractory brick lining and a ring-shaped current conductor, on its outside, constitutes the opposite pole to the upper electrode centrally extending into said surface. The entire bottom area is covered with a refractory, insulating brick lining and a brick lining of graphite bricks is applied onto that brick lining in the radially outer wall region of the furnace. Located adjacent thereto in radially inward manner is an annular zone, comprising an electrically conductive, refractory brick lining. The central bottom area above said insulating brick lining is consittuted by a monolithic ramming mass. Furthermore, the material of the wall of said furnace above said brick lining of graphite bricks largely corresponds to that of said insulating brick lining at the hearth bottom.

REFERENCES:
patent: 4277638 (1981-07-01), Stenkvist
patent: 4334029 (1982-06-01), Naito et al.
patent: 4336411 (1982-06-01), Hanas et al.
patent: 4468782 (1984-08-01), Stenkvist
patent: 4541099 (1985-09-01), Rappinger et al.
patent: 5052018 (1991-09-01), Meredith

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