An electrically powered furnace may include a plurality of heating tubes configured to receive a feed and heat the feed. Each of the plurality of heating tubes may define a longitudinal axis extending between a first end of the heating tube and a second end of the heating tube and a longitudinal passage for the feed to pass through during heating of the feed. The electrically powered furnace may also include a plurality of electrical connections electrically connecting the plurality of heating tubes, and an electrical power source electrically connected to the plurality of electrical connections and configured to supply a voltage to the plurality of electrical connections. The voltage may be greater than or equal to 20 volts. The electrical connections may electrically connect the heating tubes in series, and the furnace may be configured such that processing of the feed occurs in parallel.

The present disclosure provides an apparatus and method for preparation of negative electrode material using length-wise graphitization of carbon. The apparatus includes one or more graphite boxes, configured to store powdered coke. The one or more graphite boxes are enabled to be accommodated inside a refractory, encapsulated by a cooling jacket configured to regulate surface temperature of the apparatus. The one or more graphite boxes have one or more openings for refilling of powdered coke and collection of prepared material, the one or more openings being covered by one or more first lids and one or more heat insulating second lids. The apparatus includes one or more graphite electrodes coupled to the one or more graphite boxes and the refractory. One or more heating elements detachably coupled to the one or more graphite electrodes are enabled to receive electric power and uniformly heat the powdered coke.

A railless billet electric induction heating apparatus and method is provided where billets are continuously or statically heated by induction by moving the billets without billet support rails through an induction coil supplied with alternating current power when the billets are in direct sliding contact with the interior surface of a clay graphite billet slider disposed within the induction coil. The clay graphite billet slider can also provide thermal insulation between the induction coil and the clay graphite billet slider to eliminate the requirement for a separate induction coil refractory.

A holding device for a heating element and a heater with at least one such holding device. The holding device is produced from a refractory metal or from an alloy on the basis of refractory metal, has at least two holding elements which are arranged perpendicularly or at least substantially perpendicularly to each other. A first holding element is at least partially arranged in an opening of a second holding element.

A sintering apparatus is provided. The sintering apparatus includes a case having an internal space formed therein and including a door provided in a front portion thereof to open and close the internal space, a magnetron coupled to the case and oscillating microwaves toward the internal space, a heat insulating unit disposed in the internal space to form a chamber space and blocking transmission of heat of the chamber space to the internal space, a susceptor unit disposed in the chamber space and having a sintering space in which a to-be-sintered material is accommodated, and a cooling unit cooling at least one of the case or the chamber space.

A support arrangement (10) for mounting electric heating elements (5, 7) in a furnace (1). The support arrangement (10) comprises a first insulating body (11), a second insulating body (21), a detachably arranged cover body (30) or cover assembly (60), and a support structure (40). A cavity (15) is formed between the first insulating body (11) and a second insulating body (21) into which the heating elements (5, 7) extend to thereby allow electrical connection to a power source. Each of the first insulating body (11) and a second insulating body (21) comprises at least one longitudinal slot (13, 23) arranged in a first surface facing towards the interior of the furnace (1) to thereby allow insertion of a heating element into the support arrangement (10) from the interior of the furnace (1).

A reactor furnace for coating fiber tow includes an elongate reactor having a fiber tow inlet and a fiber tow outlet; a thermo-chemical reactor section positioned along the elongate reactor; a first microwave source for directing microwave energy along the reactor from a first end of the reactor toward a second end of the reactor; a second microwave source for directing microwave energy along the reactor from the second end of the reactor toward the first end of the reactor; a gas inlet upstream of the thermo-chemical reactor; and a gas outlet downstream of the thermo-chemical reactor.

A vertical type apparatus for firing a cathode material of a secondary battery is provided. The vertical type apparatus for firing the cathode material according to the present disclosure includes a plurality of saggers, each having an open upper portion, provided with a through-slit for gas flow in a lower surface thereof, and loaded with the cathode material therein, and a plurality of unit firing furnaces, each having an open upper portion, each plurally stacked in the vertical direction, each receiving the respective sagger.

It was learned that in an insulation heating coil used for continuously heating a running steel sheet, the conventional insulated structure of the induction heating coil was selected focusing on the heat resistance and insulation ability of the insulation itself and cannot prevent a drop in insulation ability due to entry of fine metal particles (for example, zinc fumes) in the surroundings. Therefore, an insulated structure of induction heating coil preventing the entry of zinc fumes and other fine metal particles, not falling in strength even in a high temperature environment, and able to extend the service life of the induction coil is provided. Specifically, the surface of the induction heating coil is covered with a ceramic cloth made of alumina-silica ceramic long-fibers not containing boron and the surface of that is formed with a heat-resistant insulation layer made of a surface hardening ceramic material containing alumina or alumina-silica fine particles and alumina-silica ceramic short-fibers.

An electrically powered furnace may include a furnace housing and heating elements extending in the furnace housing. The furnace also may include heating tubes extending in the interior volume, and each of the heating tubes may define an interior passage positioned to receive and heat the feed as the feed passes through the interior passage. The heating tubes may be positioned in the furnace housing to receive heat radiated from the heating elements, and the heating tubes may be arranged in one or more of at least two rows or at least two columns and such that each of the heating tubes is substantially equidistant from three or more of the heating elements. A method may include supplying a feed to the heating tubes, heating the heating tubes via the heating elements, and heating the feed via as the feed passes through the heating tubes.