TH37531A - A set of machines for handling liquids of metal, operating methods and refractory materials. - Google Patents

Abstract

DC60 (18/12/40) The invention will concern a set of machinery for the transfer of molten metal, particularly steel, between an inlet container (2) and a outlet container (10), which has the following components: - Inlet container (2) - Furnace transfer chute (28) - Outlet container (10) - Flow controller (26) for controlling the flow of molten metal through the furnace transfer chute (28) - A set of refractory assemblies (8,12,30,32,64,66,74) which will be placed between the inlet and outlet containers, defining the boundaries of the furnace transfer chute (28), through which the molten metal will flow from the inlet container (2) into the outlet container (10). Each set of refractory assemblies of the transfer chute The molten metal is discharged from the furnace (28) with at least one bonded surface (22) that forms a connection with the corresponding surface of the adjacent refractory assembly - a casing (18;40) placed around the molten metal discharge trough from the furnace (28) close to at least one bonded surface (22) between the refractory assemblies (8,12, 30,32,64,66,74), at which this casing has an inlet (44) that allows material to be introduced, and a machine set (32,34;36) is provided for introducing the sealant into the casing (40;18). The invention concerns a machine set for the transfer of molten metal, specifically steel, between the supplying container (2) and the receiving container (10), which has the following components: - Incoming container (2) - Transfer channel (28) - Destination container (10) - Flow controller (26) for controlling the flow of molten metal through the transfer channel (28) - Set of refractory assemblies (8,12,30,32,64,66,74) which are placed between the incoming and destination containers, defining the boundaries of the transfer channel (28) through which molten metal flows from the incoming container (2) into the destination container (10). Each refractory assembly of the transfer channel (28) has at least one brazing surface (22) that forms a connection point with the corresponding surface of the next refractory assembly. - Covers (18;40) placed around the transfer channel (28) near at least one brazing surface. Side (22) between the fire-resistant assemblies (8,12,30,32,64,66,74), where this enclosure has an entry point (44) that allows material to be introduced, which is made special in that it contains a mechanism (32,34;36) for introducing the sealant into the enclosure (40;18).

Claims (25)

1. A set of machinery for transferring molten metal, specifically steel, between the incoming container (2) and the outgoing container (10), which has the following components: - a transfer chute (28) - an outgoing container (10) - a flow controller (26) for controlling the flow of molten metal through the transfer chute (28) - a set of refractory assemblies (8,12,30,32,64,66,74) which are placed between the incoming and outgoing containers, defining the boundaries of the transfer chute (28) through which the molten metal flows from the incoming container (2) into the outgoing container (10). Each refractory assembly of the transfer chute (28) has at least one interlocking surface (22) that forms a connection point with the corresponding surface of the next refractory assembly. - A casing (18;40) is placed around the lattice for transferring metal from the casting (28) close to at least one side (22) of the bonding surface between the fire-resistant assemblies (8,12,30,32,64,66,74). This casing has an entry (44) that allows material to be introduced and is specially designed in that it contains a mechanism (32,34;36) for introducing the sealant into the casing (40;18). 2. A set of machinery for handling liquid metals according to claim 1, which is made special in that it has a mechanical part (32,36;36) for injecting an inert gas into the housing (40;18). 3. A set of machinery for conveying liquid metals according to one of the claims 1 and 2, which is made special in that the mechanism (32,34;36) for introducing the sealing substance consists of a cartridge (32) fitted onto a delivery mechanism (24) connected to the inlet (44) of the enclosure (40;18). 4. A set of machinery for conveying liquid metals under one of the preceding claims which is made special in that the mechanism for introducing the sealant (32,34) shall consist of a mechanism (34) which opens a predetermined set amount of sealant to be introduced into the enclosure. 5. A set of machinery for handling liquid metals according to one of the preceding claims, which is made special in that the enclosure (40) contains an outlet (46) that allows the material to flow out. 6. A set of machinery for handling liquid metals according to claim 5, which is made special in that the inlet (44) of the enclosure (40) is at one end of this enclosure and the outlet (46) is at the other end. 7. A set of machinery for handling liquid metals under either of the claims 5 and 6, which is made to be of a special type, in which the enclosure (40) is linear and continuous. 8. A set of machinery for handling liquid metals under any one of claims 5 through 7 which is introduced as follows: a mechanism capable of maintaining pressure at the outlet (46) of the enclosure (40) is connected to the outlet (46) of the enclosure (40) while still allowing excess sealing agent to flow out. 9. The machine set for conveying liquid metal according to claim 8, which is made special in that the mechanism which can maintain the pressure level at the outlet (46) of the enclosure (40) while still allowing the excess sealant to flow out, is a loss mechanism at the precision-tuned head (61) which is terminated by the vent outlet (62). 10. The method of operation of a set of machinery for handling liquid metals according to one of the preceding claims, which is made special in which the sealing agent is introduced into the enclosure(40;18). 11. The method under claim 10 is characterized by the fact that the sealing agent is a finely ground product. 12. The method under claim 11 is characterized by the fact that the product being ground is a powder. 13. The method under claim 12 is characterized by the fact that the powder contains particles of various sizes. 14. Any of the methods under claims 12 and 13 are made special in that the powder is selected from graphite and another refractory material which does not cause degradation of the quality of the metal. 15. Any of the methods under claims 12 and 13 are made special in that the powder is a molten product such as enamel which is sufficiently viscous in its liquid state to partially seal the leaks in the enclosure (40;18). 16. Any of the methods under Rights 10 and 11 are made special in that the sealing agent is selected from colors and resins and 17. The method under claim 10 is made special by the fact that the sealing agent is a non-volatile product of choice of salts and metals which are liquid at the temperature of the enclosure (40;18). 18. The method under claim 10 is characterized by the fact that the non-volatile product is introduced into a wire form which melts as it passes through the enclosure (40;18). 19. Any of the methods under claims 10 through 18 are made special in that the sealing substance is produced by the reaction of at least two chemical substances which are inactive at a temperature but which react at the temperature of the enclosure (40;18). 20. The method under claims 10 to 19 is made special in that the sealing substance is continuously introduced. 21. The method under claims 10 to 19 is made special in that the sealing substance is introduced discontinuously and uniformly. 22. The method under claims 10 to 21 is made special in that an inert gas is used for transporting the sealing agent into the enclosure (40;18). 23. The procedure under claim 22 is made special by the following: - The pressure of the inert gas at the inlet of the chamber (40;18) is set to a predetermined value. - The corresponding flow rate of the inert gas injected into the chamber (40;18) is measured. - The sealing agent is introduced into the chamber (40;18) when the value of such flow rate exceeds a predetermined value. 24. The procedure under claim 22 is made special by the following: - The flow rate of the inert gas injected into the chamber (40;18) is set to a predetermined value. - The pressure of the inert gas at the inlet of this chamber is measured. - The sealing agent is introduced into the chamber (40;18) when the value of such pressure is below a predetermined value. 25. The method under claim 22 can be applied in the machines under claim 8 or 9 which are made special in such that: - the flow rate of inert gas injected into the chamber (40) is controlled to a set value; - the flow rate of inert gas at the vent outlet (62) is determined; - the set value of the inert gas flow rate injected into the chamber (40) is adjusted in such such a way that the inert gas flow rate at the vent outlet is always positive; - the flow rate of inert gas drawn into the molten channel (28) is determined by the difference between the inert gas flow rate injected into the chamber (40) and the inert gas flow rate at the vent outlet (62); - the sealant is introduced into the chamber (40) when the said flow rate of inert gas drawn into the molten channel (28) exceeds the acceptable limit. (Clause 25, page 6, figure 11)