Cooling system for electrodes in D.C. electric arc furnaces

摘要

Cooling system for electrodes (11) in D.C. electric arc furnaces, the electrodes (11) comprising a part (11a) subjected to the hot environment of the furnace, this part being made of graphite in the case of a cathode and of copper in the case of an anode, the part (11a) being associated with a metallic part (11b) by means of a joint (13) which includes inside itself a hollow (14), comprising at least in correspondence with the metallic part (11b) a cooling circuit (20) with at least a delivery channel (15), a return channel (16) and a heat exchanger (18), the circuit (20) using liquid metal as a cooling fluid, there also being included means for the forced circulation of the cooling fluid consisting of a hydromagnetic pump (17).