Disclosed is a sintering furnace comprising a furnace body and a lifting device, wherein the furnace body comprises a furnace chamber (10) and a furnace mouth (20), the furnace chamber (10) is connected with the furnace mouth (20), wherein the sintering furnace further comprises a sealing member (30) provided at the lifting device; when the sintering furnace is in a loading or unloading condition, the sealing member (30) blocks the furnace mouth (20). When the sintering furnace is in an unloading condition, the sealing member (30) can block the furnace mouth (20), the furnace chamber (10) does not contact with the outside directly, thus the temperature in the furnace chamber (10) will not drop sharply, and the service life of the sintering furnace will be increased.

Provided is a heater protection tube for use with a molten metal holding furnace with heat dissipation and insulating properties. A heat protection tube 31 has a distal tapered cylindrical portion 35 corresponding to the inside tapered cylindrical portion 21 and a proximal non-tapered cylindrical portion 36 corresponding to the outside non-tapered cylindrical portion 22. The heater protection tube (31) is configured so that it can be mounted in the side wall (13) with the distal tapered cylindrical portion (35) located at the inside tapered cylindrical portion (21) and with the proximal non-tapered cylindrical portion (36) located at the outside non-tapered cylindrical portion (22).

An installation for treating material having a treatment chamber equipped with an envelope which separates a controlled atmosphere which is present in its interior from an atmosphere which is present outside the envelope and a housing which delimits the treatment chamber. At least one supporting roller for conveying the material is arranged at least partly inside the treatment chamber. One or more mounting apparatuses for mounting at least one supporting roller are arranged outside the housing. A flexible compensating element is provided between at least one mounting apparatus and a wall, which is associated with the latter, of the housing, there being provided a sealing arrangement which is connected to said compensating element and which separates the at least one mounting apparatus from the atmosphere which is present inside the envelope.

A steel sheet heating method that heats a steel sheet (K) to be pressed before hot press molding includes: bringing the steel sheet into a heating furnace (10) including a heater (15) on an inside surface of the heating furnace in a state where the steel sheet is supported in a vertical direction while an unnecessary portion of the steel sheet that becomes unnecessary after molding is fixedly supported by a support member (30); and performing heating at a prescribed temperature in the heating furnace, then taking the steel sheet out of the heating furnace, and after that cutting and removing the unnecessary portion before hot press molding or during hot press molding.

A dental furnace for firing dental-ceramic compounds comprises a firing chamber for receiving ceramic elements to be fired. Further, a heating device for heating and firing the ceramic element is provided. The heating device comprises at least one heating element for producing IR radiation in the range of 0.8-5 m.

The invention relates to a device for heating molten metal by the use of a heater that can be immersed into the molten metal. This immersion heater includes an outer cover formed of one or more materials resistant to the molten metal in which the immersion heater is to be used, and a heating element inside of the outer cover, where the heating element is protected from contacting the molten metal.

Disclosed is a combustion heat generator with a recirculation region for forming uniform temperature distribution in a combustion chamber by forming a gas recirculation region around a central part of a combustion space in a housing and injecting fuel into the gas recirculation region to generate space combustion based on the recirculation region.

The present invention relates to a fluid cooled housing system for use in metal making furnaces. In particular, the present invention related to a novel and inventive housing and guard member configured to receive and protect an implement, such as a burner or a lance, used in connection with metal making furnaces. A preferred embodiment of the present invention comprises a housing comprising an outer shell and an inner shell that define a fluid chamber, an end cap, a bushing insert, a face plate, a fluid inlet, and a fluid outlet. Both the fluid inlet and the fluid outlet are preferably in fluid communication with both the fluid chamber defined by the shells and a fluid chamber defined by the bushing insert. In alternative preferred embodiments, the housing system further comprises a guard member that preferably envelopes and further protects the fluid cooled housing.

Disclosed is a thermal reduction apparatus. The thermal reduction apparatus according to the exemplary embodiment includes: a preheating unit which preheats a to-be-reduced material and loads the to-be-reduced material into a reducing unit; the reducing unit which is connected to the preheating unit and in which a thermal reduction reaction of the to-be-reduced material occurs; a cooling unit which is connected to the reducing unit and from which the to-be-reduced material flowing into the cooling unit is unloaded to the outside; a gate device which is installed between the preheating unit and the reducing unit; a gate device which is installed between the reducing unit and the cooling unit; a condensing device which is connected to the reducing unit and condenses a metal vapor; a first blocking unit which is installed in the reducing unit; and a second blocking unit which is installed in the reducing unit so as to be spaced apart from the first blocking unit.

Embodiments of the present disclosure provide a sintering device and a sintering method thereof. The sintering device includes: a housing, defining a chamber; and at least one first heating mechanism and at least one second heating mechanism, disposed in the chamber, wherein the at least one first heating mechanism and the at least one second heating mechanism provide different heating temperatures for a workpiece to be processed.