A gas phase type heating method includes loading an object into a vapor heating furnace or a heating furnace via a loading/unloading portion, cooling vapor of a heat transfer liquid by a cooler provided above the loading/unloading portion in the vapor heating furnace, and causing a gas to go in and out, making a pressure in a continuous furnace uniform, and heating the loaded object, by a connection portion that is provided above the cooler and has a pressure loss smaller than a pressure loss of the loading/unloading portion.

A gas phase type heating method includes loading an object into a vapor heating furnace or a heating furnace via a loading/unloading portion, cooling vapor of a heat transfer liquid by a cooler provided above the loading/unloading portion in the vapor heating furnace, and causing a gas to go in and out, making a pressure in a continuous furnace uniform, and heating the loaded object, by a connection portion that is provided above the cooler and has a pressure loss smaller than a pressure loss of the loading/unloading portion.

Disclosed is a vertical heat treatment apparatus. The apparatus includes: a heat treatment furnace provided with a furnace inlet at a lower end thereof; a cover unit disposed on the furnace inlet of the heat treatment furnace; a cover unit opening/closing mechanism configured to support the cover unit in a cantilever manner from a bottom side of the cover unit; and an auxiliary mechanism configured to press the cover unit from the bottom side of the cover unit when the cover unit is disposed on the furnace inlet. The auxiliary mechanism is provided with a toggle mechanism.

Casting of iron or steel is performed by assembling a charge (1) of plate-like charge elements (1a, 1b, 1c . . . ) with known compositions and dimensions by placing them on top of each other, and of an alloying component entity (2) with known composition, such as alloying component pieces or an alloying component cartridge, by means of which the composition of the charge is balanced to the desired precise composition. The charge is melted in a furnace (5) and cast to form a casting with an exactly known composition.

A molten thermoplastic circulation system that is used in conjunction with thermoplastic melter kettles. The molten circulation system includes a vertical material transfer tube that is coupled to a melter kettle and includes an auger. The vertical material transfer tube is coupled to the top and bottom of a melter kettle so as to transfer molten thermoplastic between the bottom and top of the melter kettle. The vertical material transfer tube is at least partially surrounded by a heat chamber through which a heated fluid such as hot combustion gases or heated oil can flow. In use molten thermoplastic material that is heated at a higher temperature at the bottom of a melter kettle near the combustion chamber is transferred through the vertical material transfer tube to the top of the melter kettle to improve melting efficiency.

The present invention refers to an improved burning system for industrial furnace burners (16), more specifically for tunnel type furnaces for firing ceramic materials, to improve the thermal efficiency and reduce the consumption by these furnaces in the process of firing load (10) such as floor tiles, tiles, sanitary material, refractories, porcelain, insulators, grindstone, tableware ceramic, red ceramic and ceramic in general, by a using flame rotation system, providing a radiant flame surface by dividing the flame into smaller intermittent flames.

A solid fuel skewer suspension burning system for a kiln, comprises a skewer rod and a solid fuel loading system. The skewer rod has a first end and a length that extends longitudinally. The solid fuel loading system includes a fuel centering and staging area that receives fuel from a conveyor system, and a fuel loading area that receives fuel from the fuel centering and staging area. The solid fuel is inserted upon the skewer rod at the fuel loading area. The solid fuel loading system also includes a first clamp, an airlock and a plow. The first clamp holds the skewer rod and defines a first position between the first clamp and a free end of the skewer rod. The airlock is spaced from the first clamp and has a first airlock gate and a second airlock gate. The plow reciprocates substantially longitudinally in cooperation with the skewer rod to advance fuel along at least a portion of the length of the skewer rod.

A solid fuel skewer suspension burning system for a kiln, comprises a skewer rod and a solid fuel loading system. The skewer rod has a first end and a length that extends longitudinally. The solid fuel loading system includes a fuel centering and staging area that receives fuel from a conveyor system, and a fuel loading area that receives fuel from the fuel centering and staging area. The solid fuel is inserted upon the skewer rod at the fuel loading area. The solid fuel loading system also includes a first clamp, an airlock and a plow. The first clamp holds the skewer rod and defines a first position between the first clamp and a free end of the skewer rod. The airlock is spaced from the first clamp and has a first airlock gate and a second airlock gate. The plow reciprocates substantially longitudinally in cooperation with the skewer rod to advance fuel along at least a portion of the length of the skewer rod.

Vibration device for a conveying apparatus (21) to convey a metal charge in a longitudinal direction (X) comprising at least two vibration mechanisms (25, 26) each disposed on opposite sides of the conveying apparatus (21) so as to feed the metal charge. The vibration mechanisms (25, 26) comprise at least a first plurality of eccentric masses (31, 32, 33) having their mass barycenters (B) oriented in parallel directions to each other, and a second plurality of eccentric masses (34, 35) having their mass barycenters (B) disposed angularly offset with respect to the disposition of the barycenters of the first plurality of eccentric masses (31, 32, 33).

A continuous concentrate feeding equipment of the present invention, which can supply the concentrate to a smelting furnace continuously when the concentrate is received, includes a pressure-adjusting tank that temporarily accumulates granular concentrate; a lift tank that receives the concentrate from the pressure-adjusting tank and discharges the concentrate to a smelting furnace; an air passage for introducing compressed air into the pressure-adjusting tank and the lift tank, respectively; and control means for controlling the compressed air, and the concentrate is continuously supplied from the lift tank to the smelting furnace even when the lift tank receives the concentrate from the pressure-adjusting tank by the control means.