Abstract: An apparatus and method for processing iron sinter is provided. A cooling system is arranged downstream of a furnace for cooling the iron sinter. The cooling system includes a convective cooling system for forcing air into the iron sinter and an evaporative cooling system for directing fluid into the hot sinter.

Abstract: The present invention concerns a convective system for a dryer installation for a passing web, more particularly paper. The convective system 7 is an assembly of an exterior casing 13 for suction of combustion products with opening 14 towards the web, with a first 15 and second 16 suction ducts sucking the combustion products into the convective system 7. The combustion products coming from the first suction duct 15 are guided through the exterior casing 13 to a mixing and blowing device 17. Cold air 18 is mixed in this mixing and blowing device 17 with the combustion products 19, resulting in a gas mixture with lower temperature 20. The convective system 7 also has an internal casing 21 inside the external casing 13. This internal casing 21 has at least one opening towards the web 22 and has also openings 34 allowing gas flow from the mixing device 17 to the internal casing 21 of said gas mixture 20. Under the internal casing 21, there is also a blowing duct 23.

Abstract: An apparatus and method for processing iron sinter is provided. A cooling system is arranged downstream of a furnace for cooling the iron sinter. The cooling system includes a convective cooling system for forcing air into the iron sinter and an evaporative cooling system for directing fluid into the hot sinter.

Abstract: The process for the synthesis of rhenium powders comprises the injection of ammonium perrhenate powder through a carrier gas in a plasma torch of a plasma reactor operated using a mixture including hydrogen as the plasma gas, yielding metallic rhenium under the following chemical reaction: 2NH4ReO4+4H2?2Re+N2?+8H2O?. The reactor is provided with a quench zone for cooling the metallic rhenium so as to yield rhenium nano and micro powders.

Abstract: An apparatus and method for processing iron sinter is provided. A cooling system is arranged downstream of a furnace for cooling the iron sinter. The cooling system includes a convective cooling system for forcing air into the iron sinter and an evaporative cooling system for directing fluid into the hot sinter.

Abstract: Runner for guiding a flow of liquid metal and/or slag, comprising a refractory permanent lining and, inside the latter, a refractory wear lining, in which runner the permanent lining is arranged inside an elongate trough-like steel casing, in which parallel runner ducts through which a gaseous cooling medium is passed run through this permanent lining divided along the circumference and in the vicinity of the bottom and the walls of the steel casing, and in which the wearing and the permanent lining are separated from one another by a deformable layer which is made from the group of materials comprising dry refractory ramming mixture and refractory felt.

Abstract: The invention relates to an apparatus for the regeneration of active carbon comprising particularly:a hopper for introducing the active carbon;a reactor (7) delimited by an elongated shaped sheath;a continuous Archimedes screw (10) situated inside the reactor to transport the active carbon to be regenerated;structure for heating by resistances (8), arranged inside the sheath of the reactor;structure situated above the unload end of the reactor (19) and in communication with the reactor, particularly for removing the gases;a coffer into which the Arichmedes screw unloads;structure for communication with the reactor and situated on the one hand close to the input of the reactor and on the other hand along the reactor to regulate the pressure inside the reactor and to inject steam.This apparatus for regenerating active carbon enables the powder active carbon to be regenerated efficiently.

Abstract: The metal shell of a furnace or cupola is cooled by means of water flowing down over the exterior surface of the metal shell. In order to reduce heat loss and thus decrease the energy consumption, the interior surface of the metal shell is lined with a fired refractory shape. The thermal conductivity of the refractory material and its thickness are selected such that the amount of refractory material remaining upon reaching equilibrium conditions will be sufficient to maintain the mechanical and structural integrity of the lining. Refractory materials of different conductivities may be selected for various locations in the furnace depending upon the temperatures to be encountered.

Abstract: A flash smelting furnace has an outer metallic shell from which portions are cut out to expose the outer surface of the refractory lining at a depth corresponding to the location of the matte-slag interface, and gaseous cooling jets are directed onto the exposed refractory lining.

Abstract: A metallurgical shaft furnace for producing metal from a charge which enhances the preheating capacity of upwardly flowing gases in an upper preheating portion of the furnace, the upper portion being formed from concentric sections which increase in diameter from the uppermost section to the lowermost section of the preheating portion of the furnace. Troughs are formed where adjacent sections meet to form cooling rings around the upper portion, the rings projecting inwardly from the furnace wall. The lower portion comprises a melting portion having tuyeres, a hearth and tap means. Vertical cooling conduits may be provided in the lower section with conduits adjacent each tuyere terminating above the tuyere to prevent damage to the conduits.

Abstract: A metallurgical furnace has an annular conduit or hot blast plenum encircling and formed as a part of the shell of the furnace, and such plenum has a variable venturi throat or passageway through which the wind or hot blast enters the furnace proper. The furnace shell above the plenum is supported by fluid-actuated cylinder-piston means connected to conventional shell supporting legs anchored to a fixed support.

Abstract: A metallurgical vessel includes a cylindrical portion which is supported on a ring carrying a tilting spindle which is mounted for pivotal tilting movement of the vessel. The vessel includes a frustoconical mouth portion at its upper end which terminates in a mouth ring of reinforced construction. The construction includes a cooling arrangement for the mouth portion which comprises a plurality of groups of coils which are wound around the mouth portion and which are advantageously wound in the form of a multistart screw thread. Each group of coils includes an inlet and an outlet which is connected to a distributor through suitable valves. This distributor in turn is connected through a main distribution pipe which extends through an opening in the tilting ring and the tilting spindle and is connected to a source of fluid cooling medium through a rotary seal at the outer end of the tilting spindle.