A heat-treating furnace has: a rotary shaft; a rotary bottom surface pivotally supported by the rotary shaft and rotates; a plurality of workpiece storage chambers arranged on the rotary bottom surface in a multi-stage torus configuration around an axis of the rotary shaft as a center; a hollow bell-shaped hot-blast guide disposed in a center of the torus configuration on the rotary bottom surface around the axis of the rotary shaft as a center so as to decrease a volumetric capacity in the furnace and to adjust a quantity of a hot blast fed in from above itself into the workpiece storage chamber on each stage; a furnace body bottom surface spaced away from the rotary bottom surface; and a furnace body lateral surface disposed on the furnace body bottom surface.

Metallurgical assemblies and systems according to the present technology may include a refractory vessel including sides and a base. The base may define a plurality of apertures centrally located within the base. The sides and the base may at least partially define an interior volume of the refractory vessel. The assemblies may include a lid removably coupled with the refractory vessel and configured to form a seal with the refractory vessel. The lid may define a plurality of apertures through the lid. The assemblies may also include a current collector proximate the base of the refractory vessel. The current collector may include conductive extensions positioned within the plurality of apertures centrally located within the base.

Disclosed herein is a metallurgical furnace and roof for the same. The roof has a body. The body has a top surface having a center. The top surface has a center opening disposed about the center. The body has a bottom surface opposite the top surface. An outer sidewall connects the top surface to the bottom surface. The outer sidewall, bottom surface and top surface define an interior portion, wherein the outer sidewall has a lift side and a hood side. An internal spray cooling system is disposed in the interior portion of the body. Lift brackets are disposed on the top surface. The lift brackets are configured to support the entire weight of the roof when suspended by a crane, wherein all the lift brackets are disposed in a first segment of the roof.

The present disclosure provides a support mechanism for supporting a cover that performs sealing of a furnace opening of a heat treatment furnace or release the sealing by being moved up or down by an elevating unit. The support mechanism includes a first elastic body having a first elastic modulus; and a second elastic body having a second elastic modulus larger than the first elastic modulus. A reaction force in relation to the first elastic body is applied to the cover when the cover abuts on the furnace opening by being moved up by the elevating unit, and a reaction force in relation to the first elastic body and the second elastic body is applied to the cover after the cover abuts on the furnace opening by being moved up by the elevating unit.

The present disclosure relates to a single crystal furnace, which includes a main furnace body, an accessory furnace body, a furnace cover, and a driving component. The accessory furnace body is provided with a first connecting member. The furnace cover is provided with a second connecting member. The driving component can drive the first connecting member or the second connecting member to move, so as to match the first connecting member with the second connecting member, and connect the accessory furnace body with the furnace cover.

Disclosed herein is a metallurgical furnace and roof having a drain system. The roof has a roof body comprising a top surface having a center opening, a bottom surface opposite the top surface, and an outer sidewall connecting the top surface to the bottom surface. The outer sidewall, the bottom surface and the top surface define an interior portion. An internal spray cooling system is disposed in the interior portion of the body. A drain system is integral with the body. The drain system has a roof evacuation conduit disposed outside the interior portion and configured to collect spay coolant from the interior portion of the body. The drain system additionally has a drain box having a vent and an exit pipe, wherein the roof evacuation conduit channels spent coolant by gravity into the drain box which is evacuated under gravity by the exit pipe.

The present disclosure relates to a single crystal furnace, which includes a main furnace body, an accessory furnace body, a furnace cover, and a driving component. The accessory furnace body is provided with a first connecting member. The furnace cover is provided with a second connecting member. The driving component can drive the first connecting member or the second connecting member to move, so as to match the first connecting member with the second connecting member, and connect the accessory furnace body with the furnace cover.

A hood for a taphole and a tapping spout in a submerged arc furnace in the production of silicon. The hood has at least two suction ducts which are placed asymmetrically on either side of the hood, and is useful in a process for the production of silicon in a submerged arc furnace, wherein liquid silicon and refining gas escape from a taphole of a crucible, wherein the liquid silicon flows on a tapping spout into a ladle, wherein the refining gas is sucked in a hood which has at least two suction ducts which are placed on either side of the hood.

A heat-treating furnace has: a rotary shaft; a rotary bottom surface pivotally supported by the rotary shaft and rotates; a plurality of workpiece storage chambers arranged on the rotary bottom surface in a multi-stage torus configuration around an axis of the rotary shaft as a center; a hollow bell-shaped hot-blast guide disposed in a center of the torus configuration on the rotary bottom surface around the axis of the rotary shaft as a center so as to decrease a volumetric capacity in the furnace and to adjust a quantity of a hot blast fed in from above itself into the workpiece storage chamber on each stage; a furnace body bottom surface spaced away from the rotary bottom surface; and a furnace body lateral surface disposed on the furnace body bottom surface.

Metallurgical assemblies and systems according to the present technology may include a refractory vessel including sides and a base. The base may define a plurality of apertures centrally located within the base. The sides and the base may at least partially define an interior volume of the refractory vessel. The assemblies may include a lid removably coupled with the refractory vessel and configured to form a seal with the refractory vessel. The lid may define a plurality of apertures through the lid. The assemblies may also include a current collector proximate the base of the refractory vessel. The current collector may include conductive extensions positioned within the plurality of apertures centrally located within the base.