摘要:
A method and apparatus closing a slag doorway and cleaning the slag doorway and channel of a metallurgical furnace including walls defining a slag doorway and a slag channel that crosses the slag doorway and has a bottom. The apparatus includes a support structure associable with the furnace, at least one slag-breaking body including a lower border that, under mounting conditions of the apparatus on the furnace, is directed towards the bottom and at a definable height, the slag-breaking body being associated with the support structure in a movable manner along the slag channel away and/or towards the slag doorway to wipe, with its lower border, the bottom or a parallel plane, and a vibrating or oscillating mechanism associated with the slag-breaking body to confer a vibrating or oscillating movement with non null component incident the bottom, during a travel performed during its movement away or towards the slag doorway.
摘要:
Disclosed is a heating system for molten metal handling devices, examples of which are troughs, launders and other vessels. The heating system may include a refractory containment body, heater assembly, a containment shell and a thermal inducing interface between the heater assemblies and the containment shell and/or refractory body.
摘要:
A shaft furnace charging device equipped with a cooling system, the charging device including a suspension rotor with a charge distributor and a stationary housing supporting the suspension rotor so that the rotor can rotate about an axis; the cooling system including a stationary circuit portion, a rotary circuit portion arranged on the suspension rotor, and an annular swivel joint arranged coaxially on the axis and connecting the stationary circuit portion with the rotary circuit portion, the annular swivel joint including an annular fixed part mounted on the stationary housing and an annular rotary part mounted on the suspension rotor, the fixed part and the rotary part having mating configurations that allow relative rotation and including an annular trough that defines an annular volume, via which the circuit portions are in fluidal communication; wherein the annular swivel joint includes: a stationary forward connection for receiving cooling fluid from the stationary circuit portion; a rotary forward connection for supplying cooling fluid to the rotary circuit portion; a rotary return connection for receiving cooling fluid from the rotary circuit portion; and a stationary return connection for returning cooling fluid to the stationary circuit portion; a partition dividing the annular volume into an annular external cavity and an annular internal cavity so that the internal cavity is at least partially surrounded by the external cavity, so that the forward connections are coupled via one of the external and internal cavities and the return connections are coupled via the other of the external and internal cavities, and with leakage-permitting communication between the external and internal cavities through an annular first clearance and through an annular second clearance, which are provided to allow relative rotation between the fixed part and the rotary part; and an annular first flow restrictor provided in the first clearance and an annular second flow restrictor provided in the second clearance, the flow restrictors being configured to reduce leakage between the external and internal cavities.
摘要:
Presented are an insulation brick and the method of using an insulation brick to create a thermal lining. A set of corrugations are formed into a sidewall of the brick to increase the thermal insulation. A first end of the insulation brick has a convex portion while the second end of the insulation brick has a convex portion. This allows a first insulation brick to mate with another brick in an end to end configuration.
摘要:
A device (10), for moving a runner (12) of a shaft furnace between an upper tapping floor level (42), where the runner is in an operational position in front of a taphole of the furnace, and a lower service level (40), where the runner is accessible for replacement. The device (10) comprises a first support (28) and a second support (34) forming a base member (38), a carrier member (20) for bearing the runner, the carrier member having a first and a second longitudinal portion, a first lifting member (22) connected via a first articulation (26) to the first longitudinal portion and via a second articulation (30) to the first support, and a second lifting member (24) connected via a third articulation (32) to the second longitudinal portion and via a fourth articulation (36) to the second support. The base member (38), the carrier member (20) and the first and second lifting members (22, 24) together with the four articulations (26, 30, 32, 36) form a four-bar equivalent mechanism. According to the invention, the device further comprises a traction link (90) connected via a fifth articulation (92) to the first lifting member (22) and via a sixth articulation (94) to the second lifting member (24). The axes of rotation of the fifth and sixth articulations (92, 94) remain above the plane defined by the axes of rotation of the second and fourth articulations (30, 36) when the carrier member (20) is in a lower position reached by approaching, taking or traversing a change point configuration.
摘要:
At present, the discharge of slag and/or matte from smelting furnaces is being carried out manually. One of the major disadvantages of all the activities associated to the slag and/or matte discharge is the fact the personnel is exposed to harsh environmental conditions. In the medium and long term, this could generate serious occupational diseases to the operators in charge of carrying out the discharge. Due to the above, a robot system and/or method have been developed for the discharge of slag and/or matte from the smelting furnaces which include: a flash furnace, teniente converter, pierce smith converter, reverbatory furnace, electrical furnace, blast furnace among others. The robot system and method is composed mainly of an anthropomorphous robotic manipulator of at least 5 degrees of freedom and a gripping mechanism to take several tools for tapping and punching the smelting furnace, taking samples from channels and cleaning the smelting furnace channels. In this regard, most of the problems associated to the safety of the personnel and the productivity of the manual and/or mechanical process are eliminated.
摘要:
The invention relates to a melt launder (1, 9, 10) comprising a bottom and edged, said melt launder being particularly meant to be used for tapping a molten phase, such as slag, from a smelting furnace, which melt launder is manufactured of copper or copper alloy and provided with cooling channels (8), so that at the bottom (2) of the melt launder (1, 9, 10), there is arranged at least one groove (3).
摘要:
Methods and apparatus for efficient utilization of a cryogen in inerting of solid and molten metals are presented. One method and apparatus of the invention includes providing a source of liquid cryogen; transporting the liquid cryogen through a conduit connected to the source of liquid cryogen to a gas/liquid separator, wherein a portion of the liquid cryogen transforms into gaseous cryogen en route; transporting a portion of the liquid cryogen through a first conduit connecting the gas/liquid separator to a cryogen supply nozzle; transporting the gaseous cryogen through a second conduit connecting the gas/liquid separator to a cryogen supply nozzle; and flowing at least a portion of liquid cryogen and at least a portion of the gaseous cryogen through the cryogen nozzle separately and near a surface of solid or molten metal. Thus liquid that transforms into gaseous cryogen en route from storage is not vented and not wasted, but used in inerting of solid or molten metals.
摘要:
Runner for conveying a hot melt, for example molten pig iron and slag, comprising a wear lining in which the melt flows during normal operation, a safety lining which surrounds the wear lining and a metal encasing which surrounds the safety lining, wherein the safety lining is made essentially of a refractory concrete, and the metal encasing and the safety lining are joined to one another by anchoring means, and wherein a means for keeping the encasing at a higher temperature where it would otherwise have a relatively cool spot is situated locally on the outwardly facing side of the encasing.
摘要:
An adjustable form used for forming or repairing a refractory lining includes an adjustable frame constructed from a plurality of intersecting beams, at least some of which are adjustable, and a form connected to the adjustable frame. The frame can be adjusted in at least one direction and, preferably, in more than one direction. By properly adjusting the frame, the adjustable form can be used to form a refractory lining in different metal containment devices varying in dimensions, and can also be used to repair existing refractory linings. The adjustable form is inserted into a metal containment device at a distance from the floor and walls of the metal containment device, and refractory material is poured into the space between the adjustable form and the metal containment device.