DE1583878C - Device for accelerating physico-chemical processes in molten metals - Google Patents

Description

direction. In its upper area at the fork 2, the discharge tubes 3 and 4 are connected, their channels 5 and 6 either have the same or different diameters as the inner diameter 7 of the intake pipe 1. By changing this diameter 5 to 7, the proportion of affect the amount of pig iron conveyed through the suction pipe. Aligned with the suction pipe 1 another vertically arranged part 8, in the interior of which the drive shaft 9 is attached. The device consists essentially of metallic stiffeners, not shown, that of ceramic Crowds are surrounded. Depending on the intended use in metallic melts at higher temperatures, various ceramic masses are suitable for producing the device.

The embodiment shows axes running at different angles to the horizontal the discharge tubes, denoted by 10 and 11, which can also run exactly horizontally.

The invention enables with a suitable arrangement of the discharge tubes, taking into account the Length of the inner channels, as well as the processing for the same or different diameters a larger area of molten bath tanks of different sizes, each of the available thicknesses of the slag layers and their specific properties.

1 sheet of drawings

Claims (4)

1 2 that in the case of larger baths, higher and / or unpatent claims: remote areas are covered and take part in the processes, so that the duration of the treatment 1. Device for acceleration physika- is shortened. Lisch-chemical processes in molten metal 5 The invention _{x is} able to achieve the desired improvement or similarly dense substances with a rotating suction pipe immersed in the melt by increasing the outlet velocity of the melt from the pump. For this purpose at its upper area several transversely to is proposed as a solution to the problem that the axis of rotation extending ejector tubes are connected- at least some of the ejector tubes are different, characterized in that io is long. The short ejection tubes are only used for at least part of the ejection tubes (3, 4) unmixing the central bath area, while it is of different lengths. through the longer tubes the edges of the fusible 2. Device according to claim 1, characterized in that both the slag and the slag layer are acted upon, indicates that the longer discharge tubes (4) are particularly favorable, the speed is below a shallower angle to the horizontal 15 keitsverbinding longer pipes, as this one run out than the shorter ones. exposed to greater centrifugal force. Therefore 3. Apparatus according to claim 1, characterized in that the melt occurs at a higher speed, indicating that several of the ejector tubes (3, 4) which differ from the ejection tube and which are long at a greater distance still touch the slag layer at different heights from the suction tube. The outer layers are connected to the intake pipe (1). 20 outer zones of the solid phase have so far hardly been 4. Device according to one of claims 1 to used and also accepted little or no 3, characterized in that the reaction takes part in the same length. The near areas are as before Ejection tubes (3, 3 or 4, 4) treated in pairs, but carries the kinetic energy on are arranged opposite one another. The exit of the longer pipes 25 lead and accelerate separation of the reacting particles. This advantage is all the more serious than in rounds Containers, the proportion of the amount of the edge zone increases proportionally with the distance to the center. A special 30 Effect is also given by the fact that currents generated by short discharge tubes are partially from the currents of the longer discharge tubes The invention is concerned with a device to be cut. The cutting individual Strömunzur acceleration physico-chemical pre-g _en leads to better mixing of the Bagänge in molten metals or similar tight Stof- 35 of, although but substantially the effect of the fen with an immersible in the melt, rotie- fast pre-execution and Abtransportierens of generating suction pipe, at the upper area of which several molten bath parts to the reactants are desired rere discharge pipes running transversely to the axis of rotation. are connected. _{Arjer also} the length of the contact surface, measured Such, from the German patent specification 40 _SE n from the center of the vertical rotating shaft 1 190479 known mixing device is suitable of the intake pipe, can be considerably verbesbeispielsweise especially for desulfurizing, Entsili- _S ren by the present invention the longer discharge wallpapering or dephosphorizing pig iron bath. The 'pipes at a flatter angle to the horizontal melt rises from the lower bath layers in the approach than the shorter ones. 45 The amount of flushing against the slag layer accelerates radially out again. On the length of the th pig iron bath particles, however, the contact can also be increased further after the radial flow has reached. So as improvement is held with a solid phase. In the present example tion of the invention provided that several of the unis desirable to lead past discharge pipes of different lengths as possible in various melt parts on a layer of lime slag, react to a 5 ° altitude are connected to the suction pipe,
sen and just as quickly discharged again to The device according to the invention can be with to make way for new parts. Detuned in rotation within a more or less high speed The pump promotes a set period of time. In order for larger devices a mass-large amount of the melt in the reaction zone. to bring about compensation, it is according to a wide-id it is undetermined whether the emerging circular feature of the invention is expedient that the same Run from the deeper weld pool area through the long discharge pipes in pairs opposite each other through the radial ejector tubes on which are clawingly arranged. th phase over and back into the intake pipe, all sawn I _n the drawing, an embodiment of the range of the bath captured. As the bath size increases, the invention is shown schematically and below the effect of the pump decreases. Remote areas 60 explained in more detail. are less recorded. The figure in the drawing represents a vertical one Compensate for the disadvantage through longer-term stirring. Axial section by trying to work in this position, which, however, results in a cooling of the device, whereby the melt at the upper end is connected. The economy of the fende rotary drive device, which has been omitted for the sake of simplicity, decreases with longer stirring times, in which 65 _se n, as well as the molten iron surrounding the device, can be cleaned. bad is not shown further with its container. The invention is based on the object that the suction pipe 1 forms a vertical part of the pre