A DC arc furnace 10 comprises a vessel 12 comprising a roof 14, a base 16 and a sidewall 18. The vessel defines a chamber 20 for a body of material having an upper surface 44. An anode electrode 24 and a cathode electrode 26 extend parallel to one another and terminate a distance d from the upper surface. The anode and cathode are located on a first horizontal line 28 and define a gap between them. A first conductor 36 links a positive pole 32 to the anode and a second conductor 38 links a negative pole to the cathode. The first conductor comprises a first section 36.1 extending continuously underneath the base parallel to the first line, so that current flows in the first section in a direction A directly opposite to current flow B through the body of material between the anode and the cathode.

An electrode clamping device and a power transmission vehicle. The electrode clamping device includes a first supporting frame; at least one electrode clamp for clamping a graphite electrode; and a flexible connecting piece for suspending the electrode clamp under the first supporting frame; the electrode clamp is connected with the first supporting frame through a flexible connecting piece. The flexible connecting piece can make the electrode clamp adjust adaptively with the change of the position and deformation of the graphite electrode, so as to adapt to the complex deformation of the displacement and deflection of the graphite electrode in different directions and degrees, and the connection between the electrode clamp and the graphite electrode is stable and reliable. In addition, only one part of the flexible connecting piece is used to realize the self-adaptive function of the electrode clamp, and the structure is simple and reliable.

A furnace for producing a graphite product and associated processes are provided. The furnace can include a furnace housing, an array of crucibles provided within the furnace housing and each having a crucible cavity for receiving a starting material, the crucibles being distributed longitudinally spaced-apart from one another with adjacent ones of the crucibles being distanced from one another to define a gap having a predetermined width therebetween, an electrically conductive packing medium received in the furnace housing to fill each of the gaps and to at least partially surround the crucibles, and first and second electrodes each partially extending into the electrically conductive packing medium. The predetermined width is such that upon passage of an electrical current from the first electrode to the second electrode, resistive heating is generated through both the electrically conductive packing medium and the crucible sidewalls to heat the starting material.

Systems and processes for external combustion air preheating for providing preheated combustion air to a furnace. The furnace systems convective heating section includes multiple heating coils for waste heat recovery. The heating coils may be used for preheating a feed (feed preheat coils), heating a boiler feed water, superheating steam, or heating or superheating a feed stream prior to the feed being fed to the radiant coil. The waste heat in the combustion gas is also used to heat a heat transfer fluid, which may be used to pre-heat combustion air or for other purposes within the plant.

An experimental system for high-temperature oxidation and quenching of cladding materials under reactor severe accident includes: a gas supply system, a heating section, a cooling system, and a rapid quenching system. The gas supply system supplies mixed gas of steam and argon. The heating section includes an infrared radiation furnace and a quartz glass tube. The rapid quenching system includes a constant-temperature water tank, high-temperature resistant hoses, quenching quartz glass tube, and movable rails. At a reaction zone, samples and atmosphere can be heated up to 1400 C. at an ultra-high heating rate exceeding 100 C./s under reactive atmospheres such as steam, and the sample is subjected to rapid quenching after high-temperature steam oxidation testing. The experimental provides ultra-high heating rates and rapid quenching, which facilitates the reach on micro- and macro-mechanisms of high-temperature reactions and quenching in materials.

Induction furnace, method for operating, control program, and control device for an inducation furnace for heating planar rolled stock material made of metal. The rolled stock passes through the induction furnace in a longitudinal direction and extends transversely thereto from a first to a second rolled stock edge. The induction furnace has a plurality of module pairs which, viewed in the longitudinal direction, follow one another sequentially and each have a first and a second induction module. The induction modules, as viewed in the transverse direction, are positioned at a respective initial position, so that the first induction modules are arranged offset towards the first rolled stock edge and the second induction modules are arranged offset towards the second rolled stock edge. Induction modules are supplied with electrical power via respective power supply devices. A respective electrical target variable is defined for each induction module.

A temperature control device includes a first temperature control element, which has at least sectionally a spiral-shaped course, and at least one second temperature control element, which also has at least sectionally a spiral-shaped course, the first and second temperature control elements being positioned so as to be at least partially nested within one another.

Radiant element, usable in at least one furnace for heat treatment, and/or for continuous galvanizing and annealing lines of sheet metal strips or plates and/or other products made of steel and/or other metals and/or for the modernization of at least one pre-existing furnace, wherein the radiant element is used to emit and/or radiate heat, wherein the radiant element has a main longitudinal extension (L) and a transversal extension (M), perpendicular to the main longitudinal extension (L), and includes a shaped wall which defines an external surface, an internal surface and an internal cavity, in addition to at least two main hollow seats, adapted in use to house at least one heating means and at least one connection seat; radiant system and use of this radiant element.

A curing oven system for drying and/or curing building materials. The curing over system has at least one curing oven configured to be heated by at least one heating device and having at least one curing oven zone for drying and/or curing the building materials, and at least one conveying device for transporting the building materials through the curing oven. The curing oven comprises at least one electrical heating device and may also include a non-electrical heating device. Also a method for operation such a curing oven.