摘要:
A burner assembly for top combustion hot blast stove including a burner surrounded by a burner shell, where the burner has a circular cross-section; a number of air nozzles arranged for tangentially feeding air to the burner, the air nozzles being connected to one or more air distribution chambers; a number of gas nozzles arranged for tangentially feeding gas to the burner, the gas nozzles being connected to one or more gas distribution chambers; wherein the air nozzles are arranged in one or more inclined or vertical stacked arrays of air nozzles, each inclined or vertical stacked array being in connection with one inclined or vertical air distribution chamber; the gas nozzles are arranged in one or more inclined or vertical stacked arrays of gas nozzles, each inclined or vertical stacked array being in connection with one inclined or vertical gas distribution chamber; and the inclined or vertical air distribution chamber(s) and the inclined or vertical gas distribution chamber(s) are arranged along the circumference of the burner shell.
摘要:
Extraction device for extracting a tuyere part, in particular a tuyere or a tuyere cooler, from a shaft furnace, the device including a supporting frame with positioning elements configured to position the device against a furnace wall, a carriage supported by the supporting frame and movable in a direction radial to the furnace wall, an extraction rod having a first end attached to the carriage and a second end for connecting to the tuyere part, where the first end of the extraction rod had a stopper, the device further including a percussion system acting on the stopper of the extraction rod in a direction away from the furnace wall, and a pretensioning mechanism on the supporting frame configured to apply a load to the carriage, in a direction away from the furnace wall.
摘要:
The invention relates to a charging installation (1) of a metallurgical reactor, with a cooling assembly (4) disposed for cooling a reactor side of the charging installation (1). In order to facilitate the installation and maintenance of a heat protection shield in a charging installation of a metallurgical reactor, the cooling assembly (4) comprises a plurality of cooling panels (10), each cooling panel (10) comprising at least one coolant channel (12). The channel (12) is formed as a groove in the base plate (11), which groove is covered by a cover plate (13) mounted on the base plate (11).
摘要:
The invention relates to a heat protection assembly (2, 30) for a charging installation (1) of a metallurgical reactor. In order to increase the lifetime of a heat protection shield in a charging installation of a metallurgical reactor, the assembly (2, 30) comprises a plurality of heat protection tiles (31.1, 31.2, 31.3, 31.4) disposed adjacent to each other along a surface The assembly further comprises a plurality of heat protection panels (10, 110), each panel (10, 110) comprising a common base plate (11, 111) to which a plurality of tiles (31.1, 31.2, 31.3, 31.4) are connected, which heat protection panels (10, 110) are configured to be mounted on the charging installation (1) adjacent to each other.
摘要:
Method for producing pulverized coal, the method comprising the steps of heating a drying gas, preferably an inert gas, in a hot gas generator (26) to a predefined temperature; feeding the heated drying gas into a pulverizer (20); introducing raw coal into the pulverizer (20), the pulverizer (20) grinding the raw coal to pulverized coal; collecting a mixture of drying gas and pulverized coal from the pulverizer (20) and feeding the mixture to a filter (34), the filter (34) separating the dried pulverized coal from the drying gas; and collecting the dried pulverized coal for further use and feeding part of the drying gas from the filter to a recirculation line (38) for returning at least part of the drying gas to the hot gas generator (26). According to an important aspect of the present invention, the method comprises the further step of controlling an exit temperature of the mixture of drying gas and pulverized coal exiting the pulverizer (20) by controlling a volume of water injected into the heated drying gas before feeding it into the pulverizer (20).
摘要:
The invention relates to an optical monitoring system (26) for monitoring operating conditions in a tuyere zone of a blast furnace. This system comprises a light deflecting device (40) with a peep sight (28) arranged in a first face (46) of the light deflecting device (40) and an optical sensor (30) arranged in a second face (48) of the light deflecting device (40). A light deflector (41) is arranged within the light deflecting device (40) for directing incident light from the tuyere zone towards the peep sight (28) and towards the optical sensor (30). The light deflecting device (40) comprises a housing (56) with a spherical body (60) rotatably arranged therein. The spherical body (60) comprises three passages: a first passage (62) which is, when the light deflecting device (40) is connected to the rear portion of the blowpipe (18), facing the tuyere for allowing incident light from the tuyere zone to enter the spherical body (60); a second passage (70) facing the peep sight (28); a third passage (72) facing the optical sensor (30). The first, second and third passages (62, 68, 72) are configured so as to meet each other within the spherical body (60). The light deflector (41) is arranged within the spherical body (60) at the intersection of the first, second and third passages (62, 68, 72). Furthermore, the light deflecting device (40) comprises an opening (76) in a third face (50) of the housing (56) for accessing the spherical body (60) for allowing rotation of the spherical body (60) within the housing (56). The spherical body (60) comprises a socket (78) facing the opening (76) in the third face (50). The opening (76) is a guiding slot (86) whose width is substantially the same as a diameter of the socket (78).
摘要:
A spreading device (10) for the spreading of bulk material on a circular surface comprises a distribution plate (12) mounted about a central shaft (14); at least one radially extending slit (16) arranged in the distribution plate (12); and a scraper device (24) for spreading the bulk material over the length of the slit (16). The bulk material is preferably granular or powdered covering material to be deposited as an insulation layer on the top layer of a casting mold containing molten steel or metal. According to the present invention, a rectangular distribution trough (22) mounted on the distribution plate (12), the slit (16) being arranged within the distribution trough (22). Furthermore, a feed pipe (30) is arranged so as to feed bulk material into the distribution trough (22) onto an area corresponding to the rotational center (18) of the distribution plate. The slit (16) extends from the rotational center (18) of the distribution plate (12) to the edge (20) thereof. Finally, the scraper device (24) comprises at least one linearly displaceable scraper (28) arranged within the distribution trough (22) so as to feed the bulk material through the distribution trough (22) radially outwards from the rotational center (18) of the distribution plate (12). The invention also relates to a method for applying a homogeneous layer of material onto a circular surface by using such a spreading device (10).
摘要:
The present invention concerns a granulation installation (10) for granulating molten material produced in a metallurgical plant. The installation comprises a.o. a steam condensation tower (30) with a steam condensing system and an evacuation device (60) for selectively evacuating gas and steam from said tower, condensing excessive steam and evacuating gas to the atmosphere, said evacuation device (60) having an inlet (62) arranged to communicate with said upper zone (44) of said condensation tower (30) above the water-spraying device (40) and an outlet arranged to evacuate and condensate steam and evacuate gas from said condensation tower (30).
摘要:
A distribution device for distributing bulk material with a distribution spout on a cardan suspension that has a first and a second gimbal member pivotable about two perpendicular suspension axes where a drive arrangement has a first and a second transmission mechanism for controlling pivotal motion of the distribution spout about the suspension axes, and the drive arrangement has a further cardan joint, with a first part pivotable about a third axis and a second part pivotable about a fourth axis, and a rotary motor for driving a rotary drive shaft that is connected to the cardan joint by means of an articulated connecting arm such that the rotational position and the axial position of the drive shaft determine the pivotal position of the second part about the third and fourth axes respectively, where the transmission mechanisms transmit torque about the third and fourth axes from the cardan joint to the cardan suspension for pivoting the distribution spout about the first and second axes respectively.
摘要:
A distribution chute for a charging device, a charging device having the same, and a methods for mounting and dismounting such chute, the chute including an upstream mounting head and a chute body, at least two lateral suspensions on the mounting head for mounting the chute to two corresponding support flanges pivotable about a pivoting axis for raising an outlet to a charging position and for lowering the outlet to a charging position, where the suspensions define a first and a second tilt point about which a weight of the chute exerts torque onto the support flanges of the charging device when the chute is mounted to the charging device, where the ratio of the distance between each of the tilt points and the pivoting axis to the distance between the first and second tilt points amounts to 0.25 at most, the suspensions being arranged so that an oriented acute angle from the longitudinal axis to a plane through the tilt points and the center of gravity has an angular measure in the range from −5° to 15°.