Abstract:
A charging device (10; 10'; 10'') for a shaft furnace comprises a distribution chute (20; 20'; 20''; 20'''), which is supported rotatable about an essentially vertical axis of rotation (A), and a variable-speed drive (26) connected to the distribution chute. The variable-speed drive is configured to rotate the distribution chute for circumferential distribution of bulk material on a charging surface of the shaft furnace. According to the invention, the distribution chute comprises multiple chute sections (32, 34, 36, 38) that are interlinked by articulations so as to be capable of forming a curved channel for radial distribution of bulk material on the charging surface, the degree of curvature of said channel being variable in function of the speed of rotation (ω) of the distribution chute.
Abstract:
Electrical power generating system, comprising a drum (22) operatively coupled to an electrical generator; a cable (18) winded around the drum (22); and at least one load car (12) travelling on rails (14) between an upper position (12.2) and a lower position (12.1) under the action of gravity, wherein in its downward movement, the load car (12) pulls the cable (18) which rotates the drum (22); the system further comprises: a plurality of unit loads (4) and a lifting subsystem moving a charging car (2) between a loading position (2.1) where it receives unit loads (4) from the load car (12) and an unloading position (2.2) where it transfers the unit loads (4) to the load car (12). The lifting subsystem (40) can be powered by energy recovered from a land vehicle or a vessel (36), or can be powered by energy recovered from a water flow.
Abstract:
A cooling stave (100) for a metallurgical furnace, in particular for a blast furnace, has a metallic plate body (110) with a front face (112) and a rear face (114), and at least one internal coolant passage (120). A set of heat pipes (130) is associated to the coolant passage in the plate body (110) to improve heat transfer from the front face (112) to the associated coolant passage (120). According to the invention, each heat pipe (130) of the set is arranged within the plate body (110) with its condensation end portion (132) enclosed in metallic material of the plate body (110) contiguous to the associated coolant passage (120). Heat transfer from the condensation end portion (132) to the associated coolant passage (120) occurs through this region of metallic material.
Abstract:
A method for manufacturing a cooling plate (10) for a metallurgical furnace comprising the steps of providing a slab (11) of metallic material, the slab (11) having a front face (14), an opposite rear face (16) and four side edges; and providing the slab (11) with at least one cooling channel (30) by drilling at least one blind borehole (40) into the slab (11), wherein the blind borehole (40) is drilled from a first edge (22) towards an opposite second edge (24). In accordance with an important aspect of the present invention, the method comprises the further steps of deforming the slab (11) in such a way that a first edge region (46) of the slab (11) is at least partially bent towards the rear face (16) of the slab (11); and machining excess material from the front and rear faces (14, 16) of the slab (11) to produce a cooling plate (10) having a panel-like body (12) wherein an opening to the cooling channel (30) is located in the rear face (16).
Abstract:
A stave cooler (10) for a metallurgical furnace, in particular for a blast furnace, comprises a panel-like body (12) having a front face (14) for facing the interior of the metallurgical furnace and an opposite rear face (16); and at least one internal coolant passage arranged within the panel-like body (12). In accordance with an important aspect of the present invention, the at least one shaft (22), generally a plurality of such pikes (22), protrudes from the front face (14) of the panel-like body (12).
Abstract:
The present invention proposes a gap-filler insert (20) for use with cooling plates (12, 12') for a metallurgical furnace, the cooling plates (12, 12') having a front face (14, 14') directed towards the interior of the furnace, an opposite rear face (16, 16') directed towards a furnace wall (10) of the furnace and four edge faces (18, 18'). In accordance with an aspect of the present invention, the gap-filler insert (20) comprises a metal front plate (24) with a front side (24) facing the interior of the furnace and anchoring means (28, 28', 30, 30', 32, 34) for mounting the front plate (24) between two neighboring cooling plates (12, 12') in such a way that the front plate (24) extends between the edge faces (18, 18') of both cooling plates (12, 12'), and that the front side (26) of the front plate (24) is flush with the front faces (14, 14') of both cooling plates (12, 12').
Abstract:
A cooling plate (10) for a metallurgical furnace comprises a body (12) with a front face (14) and an opposite rear face (16), as well as coolants channel (18) therein; a plurality of lamellar ribs (24) on its front face, two consecutive ribs (24) being spaced by a groove (22); and inserts (26) fixed in the grooves (22) and projecting from the front face (14). The inserts (26) have an upper side projecting from the bottom edge of the rib directly above, which is configured so as to form a collecting surface (28) on which, in use, furnace burden material accumulates up to the top edge (32) of the rib (24) directly above.
Abstract:
A cooling plate (10) for a metallurgical furnace comprises a body (12) with a front face (14), an opposite rear face (16), four side edges (18, 18', 20, 20') and at least one coolant channel (30) extending from the region of one side edge (20) to the region of the opposite side edge (20'). A bent connection pipe (26, 28) connects at least one extremity of each coolant channel (30) for coolant fluid feed or return. The bent connection pipe (26, 28) is sealingly connected with the extremity of the associated coolant channel (30) within a respective recess (32) in the body (12) that is opened toward the rear side (16), wherein the coolant channel (34) opens in said recess in a connection surface (34) beveled towards the rear side (16); and the bent connection pipe (26, 28) does not extend laterally beyond the corresponding side edge (20, 20').
Abstract:
A cooling plate (10) for a metallurgical furnace in accordance with the present invention has a panel-like body (12) with a front face (14) and an opposite rear face (16), an upper edge (22) and an opposite lower edge (24), and a first side edge (18) and an opposite second side edge (20). The front face (14) is provided with grooves (32) extending between the first and second edges (18, 20), the grooves (32) forming lamellar ribs (34) on the front face (14), each rib (34) having a crest (37) and adjoining sidewalls (39, 39'), a base (38) being arranged in the groove (32) between two neighboring ribs (34). In accordance with an important aspect of the present invention, at least one of the grooves (32) is provided with a metal insert (40) arranged against at least one of the sidewalls (39, 39').
Abstract:
A method of manufacturing a stave cooler (10; 10'; 10'') for a metallurgical furnace is disclosed. The method comprises supplying a metal plate (12; 12'; 12'') having an inward side (16) for facing the inside of the furnace and an opposite outward side (18); supplying at least one coolant pipe (14); and establishing a thermo-conductive contact between the coolant pipe and the metal plate According to the present invention, the method comprises providing the coolant pipe (14) with a flattened face (24) and externally fixing the flattened face (24) to the metal plate (12; 12'; 12'') on the outward side (18) for establishing the thermo-conductive contact.