Abstract:
Die Erfindung betrifft eine Fördervorrichtung (100) zur Förderung von Schüttgut (10) für eine Anlage (20) zur Herstellung von Zementklinker, wobei die Anlage (20) zur Herstellung für Zementklinker im Rezirkulationsverfahren und/oder im Oxy-Fuel-Verfahren arbeitet, und wobei die Fördervorrichtung (100) eine Verbindung (110) mit der Anlage (20) zur Herstellung von Zementklinker aufweist, in welcher zu transportierendes Schüttgut (10) in die Anlage (20) zur Herstellung von Zementklinker übergeht. Erfindungsgemäß ist vorgesehen, dass die Verbindung (110) zwischen der Fördervorrichtung (100) mit der Anlage (20) zur Herstellung von Zementklinker eine Gaszufuhr (120) zur Beaufschlagung der Verbindung (110) mit Rezirkulationsgas aufweist. Diese Bauart ermöglicht eine Trennung zwischen atmosphärischer Luft und Rezirkulationsgas in der Anlage zur Herstellung von Zementklinker.
Abstract:
The present disclosure relates to an arrangement and process for charging iron ore (207) to a direct reduction shaft (211), as well as an arrangement and process for discharging sponge iron (208) from a direct reduction shaft. The processes each comprise steps of evacuating gas from a vessel by application of vacuum followed by refilling the vessel with a seal gas (223), wherein the seal gas is a non-oxidant gas. Moreover, the disclosure relates to a system for the production of sponge iron comprising such an arrangement for charging iron ore and/or discharging sponge iron. Furthermore, the disclosure relates to a process for direct reduction of iron ore, wherein the process comprises introducing a seal gas consisting essentially of a gas selected from hydrogen, biogas, bio-syngas, carbon dioxide, and combinations thereof to a direct reduction shaft in conjunction with charging iron ore and/or in discharging sponge iron.
Abstract:
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).
Abstract:
The invention relates to a gearbox assembly (2) for a charging installation (1) of a metallurgical reactor, the assembly (2) comprising: - a stationary casing (3) for housing a gear assembly, the casing (3) comprising a bottom section (3.3) with a central opening (9), and - a rotor (4) mounted within the casing (3) for rotation about a first axis (A), which defines an axial direction, the rotor comprising a support (4) for the gear assembly, a lower section (4.1) of the support (4) being disposed within the central opening (9). In order to provide for a better protection of a gear assembly, the bottom section (3.3) comprises a first annular portion (7, 8) extending radially inwards to a first radius, and the lower section (4.1) has a second annular portion (10.1) extending radially outwards to a second radius that is greater than the first radius, said second annular portion (10.1) being disposed adjacent to said first annular portion (7, 8), wherein the first annular portion (7, 8) comprises a ring element (8) disposed for sliding contact with the second annular portion (10.1).
Abstract:
Изобретение относится к загрузочно-распределительным устройствам шахтных печей для обжига кускового материала, преимущественно известняка, и может найти применение в металлургической, строительной, химической и пищевой промышленности. Устройство содержит загрузочный бункер с вертикальной течкой, пропускаемой через свод печи, и выгрузочный стол, расположенный с зазором под этой течкой и соединенный кронштейнами с гильзой, установленной с охватом коаксиально относительно течки. При этом выгрузочный стол и загрузочный бункер снабжены индивидуальными приводами, выполненными с возможностью регулирования их относительной скорости и направления вращения. В выгрузочном столе установлены полые радиально направленные желоба разной длины и радиального направления для равномерной выгрузки кускового материала по сечению печи. Технический результат изобретения состоит в обеспечении равномерного фракционного распределения кусков обжигаемого материала по сечению шахтной печи.
Abstract:
The invention relates to a method and to an arrangement for feeding fine-grained matter to a concentrate burner (1) or a matte burner of a suspension smelting furnace (2). The invention relates also to a controlling means for controlling feeding of fine-grained matter to a concentrate burner (1) or a matte burner of a suspension smelting furnace (2) in an arrangement for feeding fine-grained matter to a concentrate burner (1) or a matte burner of a suspension smelting furnace (2). The invention relates also to controlling means for controlling feeding of fine-grained matter to a concentrate burner (1) or a matte burner of a suspension smelting furnace (2) in an arrangement for feeding fine-grained matter to a concentrate burner (1) or a matte burner of a suspension smelting furnace (2) and to a computer program product.
Abstract:
A rotary charging device for a shaft furnace comprises a stationary housing (112) for mounting on the throat of the shaft furnace; and a suspension rotor (114) with a charge distributor, said suspension rotor being supported in the stationary housing so that it can rotate about a substantially vertical axis. The suspension rotor (114) and the stationary housing (112) cooperate to form the main casing (122) of the rotary charging device, an annular gap (160) remaining between the stationary housing and suspensions rotor. Sealing means are arranged in the vicinity of the annular gap (160) to provide a seal against shaft furnace gas.The sealing means comprise a water seal device (162) with an annular water container (164) and a cooperating annular wall (166). Alternatively, the sealing means comprise one or more nozzles (44) arranged circumferentially in the annular gap (34) to blow clean gas therein.
Abstract:
A charging installation (10) of a shaft furnace comprises a first storage hopper (12) and a second storage hopper (12'), arranged in parallel with respect to each other; each of the first and second storage hoppers (12, 12') having an inlet (14, 14') for receiving material and an outlet (16, 16') for feeding material into the shaft furnace. A receiving hopper (18) is arranged upstream of the first and second storage hoppers (12, 12'), the receiving hopper (18) being pivotably arranged about a horizontal pivoting axis (22) and configured for receiving material therein and for distributing the material to one of the first and second storage hoppers (12, 12'). The receiving hopper (18) comprises an inlet (24) for receiving material from a feed apparatus (20) and an outlet (26) for feeding the material to the first and second storage hoppers (12, 12'), the receiving hopper (18) being pivotable at least between two transfer positions, wherein, in a first transfer position the outlet (26) of the receiving hopper (18) is in alignment with the inlet (14) of the first storage hopper (12) and, in a second transfer position, the outlet (26) of the receiving hopper (18) is in alignment with the inlet (14') of the second storage hopper (12'). A rest position is arranged between said first and second transfer positions. According to an aspect of the present invention, the charging installation (10) further comprises a material gate (30) associated with the outlet (26) of the receiving hopper (18); and an actuating mechanism associated with the material gate (30) for opening and closing the outlet of the receiving hopper (18), the actuating mechanism is configured so as to essentially close the outlet (26)of the receiving hopper (18)when the receiving hopper (18) is in the rest position and so as to essentially open the outlet (26) of the receiving hopper (18)when the receiving hopper(18)is in either of the first and second transfer positions. The actuating mechanism (32) is configured so as to actuate the material gate (30) through the pivoting movement of the receiving hopper (18).
Abstract:
The present invention proposes a distribution device for a changing installation that has, a rotating and pivoting distribution chute. The device has a casing that rotatably supports a rotatable structure (hereinafter: rotor) to which the chute is mounted. The casing has a stationary heat protection shield at its lower end. The shield has a central opening delimited by an inner border. The shield extends radially outward and protects the inside of the casing against heat. The rotor, on the other hand, has a generally tube-shaped support coaxial on its rotation axis with tilting shafts for pivoting the chute. According to the invention, the tubular support reaches with its lower edge to the border of the opening in the shield. Furthermore, the chute is mounted with its upper portion inside the tubular support with its inlet above the lower edge of the support. In order to enable such mounting of the chute inlet directly inside the rotor without reducing the radial charging range, the chute is provided with a bent shape. Accordingly, the chute body has an upper portion, in which material flows along a first direction, and a lower portion, in which material flows along a diverted second direction. The upper portion of the chute body comprises an annular closed mounting head that forms the inlet and has two diametrically opposite mounting members. The tilting shafts each have a respective mount cooperating with one of the mounting members. The annular closed mounting head has a first longitudinal axis and forms the inlet. The lower portion comprises a circumferentially closed jacket having a second longitudinal axis and terminating at the outlet, the longitudinal axes being arranged at an angle that corresponds approximately to the angle between the first and second directions. A recess is provided in the chute body that permits tilting the chute to a raised position, in which the lower edge of the tubular support enters the recess.