A device and a method for producing high-purity nano molybdenum trioxide are provided. The device comprises a raw material bin (1), a feeding machine (2), a subliming furnace (7), a first vent tube (24), a second vent tube (25), a spraying device (23) and a filtering assembly. The sublimated molybdenum trioxide is cooled with clean and dehumidified air so as to finally obtain the nano molybdenum trioxide, and the recycling mode is reliable, pollution-free and high in efficiency.

High alumina cement is produced in a submerged combustion melter, cooled and ground.

High alumina cement is produced in a submerged combustion melter, cooled and ground.

An oven (10) for the heat treatment of preforms and a method for operating an air-cooling device (42) fitted to such an oven includes controlling elements (58) to vary the cooling air flow rate onto the body (18) and bottom (20) of the preforms (12) along the heating path.

High alumina cement is produced in a submerged combustion melter, cooled and ground.

A heat recovery apparatus, system and method of using the same. The heat recovery apparatus includes a support structure having a central passageway extending through the heat recovery apparatus and configured to house at least a portion of a slag conveyor, and a cavity located above the central passageway, the cavity having a plurality of pipes configured for transmission of a heat transfer fluid therethrough.

The invention relates to a cooling device (100) for cooling at least one element (150, 151) passing through said device, comprising a metal block (115), having a first side and a second side, and comprising a cooling channel (130) for cyrogenic gas. The at least one element (150, 151) can be guided along the sides of the first side of the metal block (115), the cooling channel (130) is at least partially in heat conductive connection with the second side of the metal block (115), and the cooling channel (130) has an attachment (131) on a first end for the entry of cryogenic gas and an attachment on a second end for the exit of cryogenic gas. The invention also comprises a hardening device having such a cooling device (100) and a method for cooling at least one element (150, 151) passing through said device.

The present disclosure relates to production lines and methods for hot rolling steel strips. Example production lines may include a hot rolling line that comprises a plurality of rolling stands through which a steel strip passes in a conveying direction. The production line may also include a cooling section for intensively cooling the steel strip as the steel strip exits a final rolling stand of the rolling line. The steel strips may be deformed so as to have a thickness of more than 15 mm and to comply with the most stringent requirements with respect to, for example, toughness. Further, at least a portion of the cooling section may overlap with a portion of the hot rolling line.

The invention relates to equipment for cooling a metal strip (2) having a liquid coating to be solidified, wherein said strip is continuously moving. Said equipment is characterized in that each half-cooler (11, 12) is divided, over the length thereof, into at least two sections, a first section (13) and a second section (14), in the direction of the movement of the strip (2). The first section (13) is separated from the second section (14) in each half-cooler (11, 12) by a respective internal adjustment device (7, 8), making it possible to change the gas flow/pressure parameter so that the value of said gas flow/pressure parameter is different in the first section (13) from the value of said parameter in the second section (14).

Embodiments of the present disclosure provide a system for treating oily solid material and a method for treating oily solid material. The system for treating oily solid material includes a thermal desorption module, a thermal desorption vapor treatment module and an incondensable gas treatment module. The thermal desorption module includes a vertical furnace body, a stirring shaft and an electromagnetic induction heating coil assembly. The electromagnetic induction heating coil assembly includes a plurality of coil units sequentially arranged at an outer side of the sidewall of the vertical furnace body along the height direction (Y). A heating power of each of the plurality of coil units is configured to be independently controlled.