An auxiliary heat exchanger that is used in conjunction with thermoplastic melter kettles. The auxiliary heat exchanger receives molten thermoplastic material from the bottom of a melter kettle, transports the molten thermoplastic material though the auxiliary heat exchanger and feeds the molten thermoplastic material into the top of the melter kettle thereby mixing hotter molten thermoplastic material from the bottom of the melter kettle into cooler thermoplastic material near the top of the melter kettle. The auxiliary heat exchanger includes an oil bath chamber and parallel heat transfer tubes that are arranged in a serpentine configuration and include motor drive augers to transport molten thermoplastic material through the auxiliary heat exchanger.

An auxiliary heat exchanger that is used in conjunction with thermoplastic melter kettles. The auxiliary heat exchanger receives molten thermoplastic material from the bottom of a melter kettle, transports the molten thermoplastic material though the auxiliary heat exchanger and feeds the molten thermoplastic material into the top of the melter kettle thereby mixing hotter molten thermoplastic material from the bottom of the melter kettle into cooler thermoplastic material near the top of the melter kettle. The auxiliary heat exchanger includes an oil bath chamber and parallel heat transfer tubes that are arranged in a serpentine configuration and include motor drive augers to transport molten thermoplastic material through the auxiliary heat exchanger.

The present invention relates to improvements to an induction smelting process. It relates to a hybrid combination of plasma over induction for a superefficient continuous smelting process; and real-time monitoring and adjustment of the smelting process. Disclosed is a hybrid smelting system comprising a real-time controller and a reduction zone in which plasma over induction heating continuously smelt feed material(s) fed into the reduction zone. Slag and reduced metals (alloy) are discharged under supervision of the real-time controller.

The present invention relates to improvements to an induction smelting process. It relates to a hybrid combination of plasma over induction for a superefficient continuous smelting process; and real-time monitoring and adjustment of the smelting process. Disclosed is a hybrid smelting system comprising a real-time controller and a reduction zone in which plasma over induction heating continuously smelt feed material(s) fed into the reduction zone. Slag and reduced metals (alloy) are discharged under supervision of the real-time controller.

A method for supplying energy to a scrap metal pile (9) in an electric arc furnace (2). Energy is supplied by jets of hot gas in a first phase. Energy is supplied by electric arcs in a second phase after the first phase is completed. Hot gas is supplied via at least six jets. A device (1) for the method has an electric arc furnace (2), one or more blowing devices (6a, 6b, 6c), supply jets of reactant hot air into the chamber (7) of the electric arc furnace (8). The devices have a total of at least six nozzles (10a, 10b, 10c, 10d, 10e, 10f) with nozzle openings. Fuel conducting devices (8) supply fuel to the jets of reactant hot air.

A fluid cooled combustion can, comprising: an internal core housed in an intermediate core; wherein the inteimediate core is housed in an external housing; wherein an outer surface of the intermediate core defines one or more ribs that together with an inside surface of the external housing define a cooling fluid circuit that is in fluid communication with a cooling fluid inlet and outlet.

Support device for a radiant pipe (TR), usable in thermal treatment furnaces, for lines for continuous galvanising and annealing of metal strips or sheets and/or other products made of steel and/or other metals or for revamping pre-existing furnaces, including a support for radiant pipe or shank and a furnace-side support or socket, wherein the support for the radiant pipe or shank includes at least one outer surface, facingduring usetowards the furnace-side support or socket and a thickness, wherein the furnace-side support or socket includes at least one first surface and one second surface, the latter facingduring usetowards the support for radiant pipe or shank, and a thickness, including at least one rotary means and at least one seat for housing the at least one rotary means.

Support device for a radiant pipe (TR), usable in thermal treatment furnaces, for lines for continuous galvanising and annealing of metal strips or sheets and/or other products made of steel and/or other metals or for revamping pre-existing furnaces, including a support for radiant pipe or shank and a furnace-side support or socket, wherein the support for the radiant pipe or shank includes at least one outer surface, facingduring usetowards the furnace-side support or socket and a thickness, wherein the furnace-side support or socket includes at least one first surface and one second surface, the latter facingduring usetowards the support for radiant pipe or shank, and a thickness, including at least one rotary means and at least one seat for housing the at least one rotary means.

A downflow hearth furnace includes a refractory-lined furnace lid. A burner is thermally coupled through the lid. A combustible material conveyor system communicates with an entry port. A variable speed motor driven rotatable combustible material disperser is positioned under the entry port and coupled to a rotation shaft. A refractory-lined furnace shell has a top edge mating with a bottom edge of the furnace lid and can be raised and lowered between an open position and a closed position. A bed of gas-permeable heat resistant material suspended on a layer of filter material defines a bottom end of a hearth disposed above a plenum. An outlet duct communicates with the plenum and has a horizontal outlet flange. A fixed scrubber input duct has an inlet flange positioned to mate with and form a seal with the outlet duct flange when the furnace shell is in the closed position.

Methods of maximizing mixing and melting in a submerged combustion melter (SCM) are described. One method includes melting an inorganic feedstock in an SCM using an arrangement of two or more submerged combustion (SC) burners, the SCM having a length (L) and a width (W), a centerline (C), a north side (N) and a south side (S), and operating the arrangement of SC burners such that a progressively higher percentage of a total combustion flow from the SC burners occurs from SC burners at progressively downstream positions in the SCM. Other methods include operating the N and S SC burners with more combustion flow than the central burners. Other methods include strategic placement of fuel lean SC burners and fuel rich SC burners.