A cooling assembly for cooling exhaust gases emitted from a steel-making furnace includes a plate configured to be coupled to the furnace. The plate has a first surface and an opposing second surface. The assembly includes a body having a defined length and a cross-sectional shape having a thickness defined between an outer surface and an inner surface thereof. The body includes a first mounting end and a second mounting end, where the first mounting end is mounted to the first surface at a first angle greater than 0. The second mounting end is also mounted to the first surface at a second angle greater than 0, and the second mounting end is spaced from the first mounting end. A conduit is defined between the inner surface and first surface for a cooling fluid to flow therethrough.

A stepwise gas distribution and graded oxygen supplementation device for distribution of high-ratio circulating flue gas is provided. The circulating flue gas distribution main pipe includes stepped sections communicated with each other in sequence, and pipe diameters of the stepped sections are reduced in sequence along a flue gas moving direction. The circulating flue gas distribution branch pipes are each in communication with and arranged at one side of the corresponding stepped section. The flue gas sealing cover is in communication with gas outlet ends of the circulating flue gas distribution branch pipes. The oxygen supplementing devices are arranged in the circulating flue gas distribution branch pipes needing to increase oxygen content. The oxygen supply device is in communication with gas inlet ends of the oxygen supplementing devices.

A system for treating tin smelting intermediate materials and method for treating the materials is disclosed. The system includes a fuming furnace, an electric settling furnace, a lean slag water quenching pool, a matte ladle, a pulverized coal injection system, a flue gas treatment system and a secondary air supply system; the fuming furnace is connected with the electric settling furnace, the pulverized coal injection system, the flue gas treatment system and the secondary air supply system respectively; the electric settling furnace is also connected with the slag-lean water quenching pool and the matte ladle respectively. The system and method disclosed by the disclosure can efficiently classify, separate and recover tin from other materials, solve the problems of difficult sales and transportation of complex tin-containing smelting intermediate materials and economic loss of discounted sales, and transform hazardous wastes into value-added valuable materials for comprehensive recovery.

A carbon baking furnace has at least one vertical baking shaft with a system and method for positioning green carbon bodies to be baked at the top of the vertical baking path and ringing the green carbon bodies with a sacrificial medium such as packing coke. The disclosure provides a system and method for controlling the delivery and removal of the sacrificial medium used to surround the carbon bodies within the baking paths. A volatile extraction system and method are provided. A system and method for unloading baked carbon bodies is disclosed.

A cooling assembly for cooling exhaust gases emitted from a steel-making furnace includes a plate configured to be coupled to the furnace. The plate has a first surface and an opposing second surface. The assembly includes a body having a defined length and a cross-sectional shape having a thickness defined between an outer surface and an inner surface thereof. The body includes a first mounting end and a second mounting end, where the first mounting end is mounted to the first surface at a first angle greater than 0. The second mounting end is also mounted to the first surface at a second angle greater than 0, and the second mounting end is spaced from the first mounting end. A conduit is defined between the inner surface and first surface for a cooling fluid to flow therethrough.

A coupling has an opening and a protrusion extending downward from the opening. The protrusion has threads that are preferably positioned outside of the opening. A rotor shaft that connects to the coupling has an internal bore with threads that receives and retains the protrusion, such as by a threaded connection between the two, so the protrusion applies driving force to the shaft.

A heat treatment apparatus includes a heating unit, a chamber, an exhaust unit, a partition unit and a switching unit. The heating unit supports and heats a substrate on which a film of a processing liquid is formed. The chamber surrounds the substrate supported by the heating unit. The exhaust unit is configured to discharge a gas from an inner space of the chamber through a discharge opening located near the heating unit. The partition unit is configured to partition the inner space of the chamber into a first space where the substrate on the heating unit is exposed and a second space located above the first space. The switching unit is configured to switch between a first state where the gas is discharged by the exhaust unit through the first space and a second state where the gas is discharged by the exhaust unit through the second space.

A pass-through device for a chimney, and a chimney support system having pass-through device for a chimney, are provided. The pass-through device includes a pass-through tube and a chimney support disposed within the pass-through tube. The chimney support is supported by the pass-through tube from within the pass-through tube.