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Class Information
Number: 373/72
Name: Industrial electric heating furnaces > Arc furnace device > Furnace body detail > Hearth or crucible
Description: Subject matter including the part of the furnace structure which holds the molten material.

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8693519 Sensor system for bottom electrodes of an electric arc furnace Apr. 8, 2014
8446929 Furnace refractory brick hearth system May. 21, 2013
8411724 Sill and door jamb assembly for electric arc furnace Apr. 2, 2013
8391331 Method of charging fine-grained metals into an electric-arc furnace Mar. 5, 2013
8325779 Wide-range round-bottom hearth-brick compression system Dec. 4, 2012
8217312 Method and device for heating a fluid Jul. 10, 2012
7858018 Mounting enclosure for burners and particle injectors on an electric arc furnace Dec. 28, 2010
7154932 Refining and casting apparatus Dec. 26, 2006
6728291 Melting vessels provided with a cooled bottom electrode Apr. 27, 2004
6636548 Bottom electrode structure of electric arc furnace Oct. 21, 2003
6614831 Mounting arrangement for auxiliary burner or lance Sep. 2, 2003
6485675 Bottom for a metallurgical vessel with a direct current electric arc device Nov. 26, 2002
6473446 Electric furnace for steel making Oct. 29, 2002
6426969 Discharge screw for moving hearth Jul. 30, 2002
6377602 Method and device to feed premixed gas to tuyeres of electric arc furnaces Apr. 23, 2002
6295309 Vacuum arc remelting apparatus and process Sep. 25, 2001
6289035 Mounting arrangement for auxiliary burner or lance Sep. 11, 2001
6226312 Device to cool and protect a cathode in an electric arc furnace May. 1, 2001
6212218 Reusable lance with consumable refractory tip Apr. 3, 2001
6185242 Integral side wall and tap hole cover for an eccentric bottom tap (EBT) electric furnace Feb. 6, 2001
6163561 Cooled basket for steel plants Dec. 19, 2000
6137822 Direct current arc furnace and a method for melting or heating raw material or molten material Oct. 24, 2000
6038245 Process for melting a charge in an electrical arc furnace Mar. 14, 2000
6031861 Electrode and cooling element for a metallurgical vessel Feb. 29, 2000
5999557 Steel making bath control Dec. 7, 1999
5991328 Crucible for the inductive melting or superheating of metals, alloys, or other electrically conductive materials Nov. 23, 1999
5946339 Steelmaking process using direct reduction iron Aug. 31, 1999
5943360 Electric arc furnace that uses post combustion Aug. 24, 1999
5889809 Cooling system for electrodes in D.C. electric arc furnaces Mar. 30, 1999
5867523 Electric furnace with conductive hearth Feb. 2, 1999
5850413 Device to support and swing the hearth in an electric furnace Dec. 15, 1998
5835523 Bottom electrode for a metallurgical vessel Nov. 10, 1998
5822357 Process for melting a charge in a furnace Oct. 13, 1998
5809055 Metallurgical vessel heated by direct current and having a bottom electrode Sep. 15, 1998
5802098 Melting vessel with fastening, mounting and tilting devices Sep. 1, 1998
5802097 Melting method for an electric ARC furnace with alternative sources of energy and relative electric ARC furnace with special burner positioning Sep. 1, 1998
5719897 Furnace vessel for a direct current arc furnace Feb. 17, 1998
5651024 Cooled bottom electrode for a direct current electric furnace Jul. 22, 1997
5610935 Method for manufacturing a base anode for a metallurgical vessel Mar. 11, 1997
5590151 Process for melting scrap iron in an electric furnace and installation for implementing the process Dec. 31, 1996
5590152 DC arc furnace Dec. 31, 1996
5588018 Metallurgical container comprising a hearth bottom electrode Dec. 24, 1996
5572544 Electric arc furnace post combustion method Nov. 5, 1996
5544195 High-bandwidth continuous-flow arc furnace Aug. 6, 1996
5490163 Method of operation of a D.C. electric-arc furnace with bottom electrode and refractory part for its implementation Feb. 6, 1996
5479433 Direct current arc furnace Dec. 26, 1995
5444733 Electric arc furnace with alternative sources of energy and operating method for such electric furnace Aug. 22, 1995
5410564 Direct current electric furnace for melting metal Apr. 25, 1995
5381441 Direct current arc furnace and method for its operation Jan. 10, 1995
5381440 Bottom electrode for direct current arc furnaces Jan. 10, 1995

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