A furnace includes a pedestal, a crucible, first and second heaters, and a controller. The crucible is arranged on a pedestal that is movable downwardly and is rotatable. The first and second heaters are spaced vertically along an outer wall of the crucible and are arranged around the crucible to heat pieces of solid material deposited in the crucible. A third heater is arranged above the crucible if the crucible includes a solid cylindrical mold or in a hollow cylindrical space of the crucible if the crucible includes a hollow cylindrical mold. The controller is configured to control the first and second heaters to heat the pieces of the solid material to form a melted liquid. The controller is configured to control the rotational and downward movements of the pedestal relative to the first and second heaters during solidification of the melted liquid to form an ingot.

A furnace includes a pedestal, a crucible, first and second heaters, and a controller. The crucible is arranged on a pedestal that is movable downwardly and is rotatable. The first and second heaters are spaced vertically along an outer wall of the crucible and are arranged around the crucible to heat pieces of solid material deposited in the crucible. A third heater is arranged above the crucible if the crucible includes a solid cylindrical mold or in a hollow cylindrical space of the crucible if the crucible includes a hollow cylindrical mold. The controller is configured to control the first and second heaters to heat the pieces of the solid material to form a melted liquid. The controller is configured to control the rotational and downward movements of the pedestal relative to the first and second heaters during solidification of the melted liquid to form an ingot.

The present invention relates to an ingot growing device for growing a single crystal silicon ingot. According to one embodiment of the present invention, the ingot growing device comprises: a growing chamber having an inner space; a growing container located in the inner space and having a silicon solution accommodated therein; a heating unit encompassing the growing container and located thereat, and generating heat; and a susceptor for supporting the growing container, wherein the heating unit comprises: a first ring heater having a ring shape; a second ring heater having a ring shape and located at the lower part of the first ring heater; a first coupling part for coupling the first ring heater and the second ring heater; and a first ring support unit located between the first ring heater and the second ring heater and supporting the first ring heater.

The present invention relates to an electric arc furnace, containing a furnace shell, an electrode, a furnace shell moving mechanism that supports the furnace shell so as to be movable on an installation surface, and a first insulation that electrically insulates between the furnace shell and the furnace shell moving mechanism.

The present invention relates to an ingot growing device for growing a single crystal silicon ingot. According to one embodiment of the present invention, the ingot growing device comprises: a growing chamber having an inner space; a growing container located in the inner space and having a silicon solution accommodated therein; a heating unit encompassing the growing container and located thereat, and generating heat; and a susceptor for supporting the growing container, wherein the heating unit comprises: a first ring heater having a ring shape; a second ring heater having a ring shape and located at the lower part of the first ring heater; a first coupling part for coupling the first ring heater and the second ring heater; and a first ring support unit located between the first ring heater and the second ring heater and supporting the first ring heater.

A combustion tube mounting system releasably mounts a combustion tube to an aperture in the floor of a furnace housing. The combustion tube has a base assembly with a cam and can be manually or automatically unlocked by cam pins in the floor for selectively engaging the cam for lowering the combustion tube from the floor of the furnace. When a new combustion tube is placed on the lower seal assembly and raised, it automatically aligns and engages the upper furnace seal and engages cams on the floor of the furnace housing which lock the combustion tube in place as it is introduced into the furnace.

A combustion tube mounting system releasably mounts a combustion tube to an aperture in the floor of a furnace housing. The combustion tube has a base assembly with a cam and can be manually or automatically unlocked by cam pins in the floor for selectively engaging the cam for lowering the combustion tube from the floor of the furnace. When a new combustion tube is placed on the lower seal assembly and raised, it automatically aligns and engages the upper furnace seal and engages cams on the floor of the furnace housing which lock the combustion tube in place as it is introduced into the furnace.

A combustion tube mounting system releasably mounts a combustion tube to an aperture in the floor of a furnace housing. The combustion tube has a base assembly with a cam and can be manually or automatically unlocked by cam pins in the floor for selectively engaging the cam for lowering the combustion tube from the floor of the furnace. When a new combustion tube is placed on the lower seal assembly and raised, it automatically aligns and engages the upper furnace seal and engages cams on the floor of the furnace housing which lock the combustion tube in place as it is introduced into the furnace.

A crucible lifting device includes a vacuum chamber, a vacuum chamber lower seat and a crucible lifting assembly. The vacuum chamber lower seat is arranged orthogonally at the bottom of the vacuum chamber, the vacuum chamber lower seat including a plurality of coupling parts arranged orthogonally at the vacuum chamber lower seat and on a side away from the vacuum chamber. The crucible lifting assembly is arranged on the vacuum chamber lower seat and on the side away from the vacuum chamber. The crucible lifting assembly includes a plurality of multi-rotation angle guides, one end of each multi-rotation angle guide connected to each coupling part; a plurality of guide rods, one end of each guide rod connected to the other end of each multi-rotation angle guide; and a plurality of guide rod accommodating parts, each guide rod accommodating part configured to correspond to each guide rod.

The present invention relates to an electric dry hearth melter furnace designed for efficient and controlled metal melting. The furnace features a half-crucible chamber with an embedded heating element, ensuring direct heat transfer for improved energy efficiency. A refractory cover and insulation minimize heat loss, while a discharge outlet with an integrated filter reduces slag contamination. Adjustable support legs and an automated tilting mechanism facilitate controlled metal flow. A thermocouple and power control system regulate temperature, optimizing performance. The furnace's batch-loading system eliminates repeated heat cycling, enhancing metal purity and reducing oxidation. Its modular design accommodates various foundry scales, providing a cost-effective and safer alternative to conventional gas-fired and continuous melting systems. The invention offers precise temperature control, reduced operational costs, and an improved melting process, making it ideal for small to mid-sized foundries seeking efficient metal processing solutions.