Abstract: The invention relates to a method for sintering carbon bodies (16) in a furnace comprising at least a first furnace chamber (11) for receiving the carbon bodies, which are accommodated in a packing material (23), the carbon bodies being arranged between lateral chamber walls (12, 13, 21) of the furnace chamber, and the furnace chamber serving to form a preheating zone V, a heating zone H provided with a heating device, and a cooling zone A, wherein a packing material (23) made, at least in part, of a highly heat-conductive material is used.

Abstract: The invention relates to a method for sintering carbon bodies (16) in a furnace comprising at least a first furnace chamber (11) for receiving the carbon bodies, which are accommodated in a packing material (23), the carbon bodies being arranged between lateral chamber walls (12, 13, 21) of the furnace chamber, and the furnace chamber serving to form a preheating zone V, a heating zone H provided with a heating device, and a cooling zone A, wherein a packing material (23) made, at least in part, of a highly heat-conductive material is used.

Abstract: The invention relates to a shaft furnace (10) and a method for heat treating carbonaceous molded parts, particularly anodes (17), having an arrangement of the molded parts in at least one molded part column (11 to 15) disposed between tempering shaft devices (19, 20, 21) comprising a plurality of molded part rows (16) disposed above each other in a conveyor shaft, the rows being moved past temperature fields of the tempering shaft devices (19, 20, 22) and passing through a heating zone (25), a firing zone (27) having a burner device (28), and a cooling zone (26), wherein thermally insulating intermediate layers are disposed both between the temperature fields of the tempering shaft devices (19, 20, 22) and between the molded part rows of the molded part columns.

Abstract: A heat recovery method in the manufacture of anodes in an annular anode furnace includes conveying a first partial quantity of the hot air produced in a cooling zone by the waste heat of the anodes into a heating-up zone using a first suction device. A second partial quantity of the hot air produced in the cooling zone is conveyed to a heat exchanger that is realized independently of the annular anode furnace using a second suction device. The heat transfer medium that serves for operating the heat exchanger is primarily heated with the hot air withdrawn from the cooling zone.

Abstract: The invention relates to a shaft furnace (10) and a method for heat treating carbonaceous molded parts, particularly anodes (17), having an arrangement of the molded parts in at least one molded part column (11 to 15) disposed between tempering shaft devices (19, 20, 21) comprising a plurality of molded part rows (16) disposed above each other in a conveyor shaft, the rows being moved past temperature fields of the tempering shaft devices (19, 20, 22) and passing through a heating zone (25), a firing zone (27) having a burner device (28), and a cooling zone (26), wherein thermally insulating intermediate layers are disposed both between the temperature fields of the tempering shaft devices (19, 20, 22) and between the molded part rows of the molded part columns.

Abstract: The invention relates to a method for heat recovery in the production of anodes in an annular anode furnace (10), comprising at least one furnace unit (‘hearth’) (11) with a heating zone (13), a hearth zone (14) and a cooling zone (15), with in each case a plurality of furnace chambers (12) which are interconnected by heating ducts (17), are formed as heat exchangers and serve for receiving the anodes, in which method, to operate the heating zone, a first partial amount of the hot air formed in the cooling zone by the heat dissipated from the anodes is directed into the heating zone by means of a first suction extraction device (23) and a second partial amount of the hot air formed in the cooling zone is directed to a further heat exchanger (27), formed independently of the annular anode furnace, by means of a second suction extraction device (21), wherein the heating up of the heat transfer medium used for operating the heat exchanger takes place primarily by means of the hot air removed from the cooling zon

Abstract: In a device (1) for heating primary materials, in particular calcined petroleum cokes (5, 6) from which an anode (4) can be manufactured for dry electrolysis, comprising a mixing and forming unit (8) in which the primary materials (5, 6) can be formed into anodes (4) which are subsequently fired in an annular anode furnace (3), the thermal waste heat of the annular anode furnace (3) should be usable for heating up the primary materials (5, 6). This is achieved in that the primary materials (5, 6) can be heated in a heat exchanger (11) by means of flue gas drawn from the annular anode furnace (3) through a feed pipe (12), and that the petroleum coke fractions (5, 6) heated in this way can be input into the mixing and forming unit (8) for forming the unfired anode (4).

Abstract: A device and method for measuring the operating condition of an open anode furnace, includes at least one sensor for measuring the temperature and/or determining the fuel quantity or the burner capacity of the burners allocated to the anode furnace, or for determining the opacity of the air, and for the independent and automatic control of the process management of the anode furnace. This is achieved by at least one measuring device for measuring the throughput of air flowing through the anode furnace provided in an air duct of the anode furnace through which air flows. The measured values are evaluated by an electronic control unit, and the electronic control unit sets the operating condition of the anode furnace according to the particular measured values.

Abstract: A method for management of an anode furnace, from which an adjustable volume of flue gas is directed into a flue system, comprises the steps of measuring the actual flue gas temperatures in flues of each section as actual temperatures, taking related set temperatures from a set temperature schedule, calculating a time integral of deviation between actual and set temperatures, modifying the actual temperature during a baking process such that the time integral is reduced to zero at the end of the process, registering at least one of the oxygen content and the fuel load in each flue, and setting burner capacity according to the set temperature and to the available oxygen content in the flue.