CONTROL METHOD OF LEVEL OF TOP SURFACE OF SLAGGY PHASE AND BOUNDARY OF SLAGGY AND METALLIC PHASE OF MELT IN LIFT TUBE TANK OF IRON-AND-STEEL FURNACE BY VANUKOV OR ROMELT Russian patent published in 2009 - IPC F27B17/00 F27D19/00 G01F23/04 

FIELD: metallurgy.

SUBSTANCE: invention relates to non-ferrous metallurgy field. According to method it is implemented voltage feeding to electroconductive refractory rods, used for slag heating and setting adjusting of current value. It is displaced rod and implemented continuous measurement and comparison of current value through rod with setting. At equality of measured value of current to setting value it is fixed top surface of slaggy or metallic phase of melt in tank of iron-and-steel furnace. In the capacity of electroconductive refractory rod it is used graphitic rod or electrode, used for electroarc heating of melt in tank of iron-and-steel furnace. After achievement of equality of current setting to corresponding measured current values it is checked equality to zero of the first current derivative.

EFFECT: increasing of accuracy and reliability of control.

3 cl, 1 dwg