Transport device for storing and transporting material during a treatment process, treatment device, and method for treating material

Abstract

The invention relates to a transport device (10) for storing and transporting material (12) during a treatment process, in particular for producing battery material, in which the material (12) is treated with a process gas (14). A plurality of container units (18) each provide a container volume (20) for the material (12) and are arranged one above the other in a plurality of planes (22.i) while maintaining a distance. Two container units (18a, 18b) define in each case a container pair (28) having a lower container unit (18a) and an upper container unit (18b) arranged thereabove. A flow chamber (30) is formed between the lower and the upper container unit (18a, 18b) of the container pair (28), which flow chamber extends between a flow inlet (32) on an inflow side (34) and a flow outlet (36) on an outflow side (38). The transport device (10) comprises a process-gas conducting device (50), which provides a flow conducting structure (52) for a container pair (28) on the inflow side (34) of the container pair, by means of which flow conducting structure a process gas flow (16) incident on the flow conducting structure (52) is deflected in such a way that the process gas flow flows through the flow inlet (32) in the direction of the container volume (20) of the lower container unit (18a) of the container pair (20). The invention further relates to a treatment device (62) and to a method for treating material (12) with a process gas (14).

Description

[0001] Transport device for storing and transporting material during a treatment process, treatment device and method for treating material

[0002] BACKGROUND OF THE INVENTION

[0003] 1. Field of the invention

[0004] The invention relates to a transport device for storing and transporting material during a treatment process, in particular for the production of battery material, in which the material is treated with a process gas, comprising: a) several container units, each providing a container volume for the material and arranged one above the other in several levels while maintaining a distance; b) two container units each define a container pair with a lower container unit and an upper container unit arranged above it; c) a flow space is formed between the lower and the upper container unit of the container pair, which extends between a flow inlet on an inlet side and a flow outlet on an outlet side.

[0005] Furthermore, the invention relates to a treatment device for treating material with a process gas, in particular for the production of battery material, comprising: a) a process chamber defined within a process chamber housing; b) a process gas system by means of which the process gas can be injected into the process chamber; and c) a conveying system by means of which the material can be conveyed through the process chamber. The invention also relates to a method for treating material with a process gas, in particular for the production of battery material, in which the material is conveyed through a process chamber in a transport device.

[0006] 2. Description of the state of the art

[0007] The production of battery materials, such as anode materials for batteries, involves a number of sequential treatment processes in which the material is thermally treated and / or treated with a process gas in a specific process atmosphere required for each treatment process. The material is typically particulate and, in particular, a powder.

[0008] The process gas can be an inert gas or a chemically reactive gas. Examples of process gases include air (possibly conditioned), water vapor (H2O), carbon dioxide (CO2), or oxygen (O2).

[0009] For example, the material is heated to temperatures of up to 1,000 °C and exposed to a chemically reactive process gas with which the material can react. The temperature can also be exceeded by 1,000 °C if required.

[0010] For high quality, it is important that the material is heated uniformly and that there are no areas with unacceptable temperature differences within the material. Furthermore, the process gas must be able to flow homogeneously over and, if necessary, through the material, so that the desired reaction also occurs homogeneously throughout the material.

[0011] For example, in transport structures and treatment devices of the type mentioned above, as known from DE 102017121224 A1, process gas is blown in laterally through flow inlets between material containers and directed onto the material using directional injection devices. This is relatively complex from a structural and process engineering perspective, as the injection devices and the transport structures must be coordinated to ensure that the process gas reaches and is directed onto the material as desired. SUMMARY OF THE INVENTION

[0012] It is therefore an object of the invention to provide a transport device, a treatment plant and a method of the type mentioned above, which, in a structurally simple manner, lead to an effective application of process gas to the material.

[0013] This task is solved in a transport device of the type mentioned above by the fact that d) the transport device comprises a process gas guiding device which provides a flow guide structure for a pair of containers on its inlet side, with which a process gas flow hitting the flow guide structure is deflected in such a way that it flows through the flow inlet in the direction of the container volume of the lower container unit of the pair of containers.

[0014] In this way, the process gas flows onto material located in the container volume of the lower container unit and penetrates deeper into the material volume than would occur if the material were merely flowing over it. This directed flow onto the material is achieved by a mechanically simple flow guide structure that is carried along by the transport device during its transport movement.

[0015] It is advantageous to have a separate flow guide structure for each pair of containers. This ensures that the material is effectively supplied with process gas at all levels of the transport device.

[0016] Preferably, a flow guide structure is provided on each of two opposite sides of a pair of containers. Such a transport device can thus be supplied with process gas from either side, regardless of its orientation. This simplifies handling, particularly in treatment devices with two parallel conveying lines, where transport devices conveyed on these lines are supplied with process gas from different sides. A structurally simple yet effective flow guide structure is provided by a flow surface on a side wall of the upper container unit of the pair.

[0017] Preferably, the flow surface is inclined downwards at a flow angle relative to a horizontal plane in the direction from the flow inlet to the vertical central plane of the upper container unit.

[0018] Particularly effective are flow angles between 10° and 80°, between 25° and 65°, between 40° and 50°, or 45°. Basically, the flow angle is selected to achieve the most effective turbulence in the flow space.

[0019] Fluid dynamically favorable alternatives exist when the flow surface is planar, convex, or concave, and / or defined by a sequence of ribs or similar features, and / or follows the shape of a circular cylinder. The curvature of a convex or concave flow surface and the radius r of any circular cylinder underlying a potentially formed circular cylinder surface are also selected to achieve the most effective turbulence possible in the flow space.

[0020] One structural option is to design the process gas guidance system with flow control structures as a separate component. In this case, the tank units are essentially surrounded by a separate framework structure that provides the flow control structure(s).

[0021] In an alternative design, a flow guide structure is formed through or on a side wall of the upper container unit.

[0022] It is advantageous if the side wall of the upper container unit is angled and has an angled profile in cross-section with a lower section and an upper section, the lower section providing the flow guidance structure.

[0023] Preferably, the distance between two treatment units is determined by a spacing structure.

[0024] The spacer structure can be designed as a separate component, in particular as a frame, from which the container units can be lifted and stored. Alternatively, it is advantageous if the spacer structure includes support legs and complementary mounting surfaces on each container unit, so that the container units can be stacked on top of each other.

[0025] In the treatment device of the type mentioned above, the problem stated above is solved by the fact that the conveying system includes several transport devices with some or all of the features explained above.

[0026] It is advantageous if the conveyor system includes a sliding track on which the transport devices can be pushed through the process area on a push plate. Such conveyor systems are robust and can withstand aggressive atmospheres and high temperatures.

[0027] With regard to the flow of gas to the transport device, it is advantageous if the process gas system comprises a nozzle arrangement, in particular a nozzle arrangement with slot nozzles, by means of which process gas flows can be directed towards one or more of the flow control structures of the process gas guidance device.

[0028] In the method of the type mentioned above, the problem stated above is solved by using several transport devices with some or all of the features explained above.

[0029] BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Exemplary embodiments of the invention are explained in more detail below with reference to the drawings. These show:

[0031] Figure 1 shows a perspective view of a transport device according to the invention with several container units for material, which are arranged one above the other in several levels while maintaining a distance.

[0032] Figure 2 shows a side view of the transport device from Figure 1;

[0033] Figure 3 is a front view of the transport device from Figure 1; Figure 4 is a perspective view of a container unit;

[0034] Figure 5 shows a top view of the container unit from Figure 4;

[0035] Figure 6 shows a section of the container unit along the section line Vl-Vl of Figure 5, showing a total of one container pair;

[0036] Figure 7 schematically shows a cross-section of a process chamber housing of a treatment furnace with a process chamber in which the transport device is arranged and with a process gas system;

[0037] Figure 8 shows a section of the transport device according to Figure 7, in which the container units are filled with material, with schematically illustrating flows.

[0038] DESCRIPTION OF PREFERRED EXAMPLES

[0039] Figures 1, 2, and 3 show a transport device 10 for storing and transporting material 12 during a treatment process, particularly for the production of battery material, in which the material 12 is treated with a process gas 14. As mentioned earlier, the process gas can be an inert gas or a chemically reactive gas and, for example, air, water vapor (H₂O), carbon dioxide (CO₂), or oxygen (O₂). Process gas 14 and process gas flows 16 are illustrated by arrows only in Figures 7 and 8.

[0040] 1. Container units and support frame

[0041] The transport device 10 comprises several container units 18 for the material 12, one of which is shown separately in Figures 4 and 5.

[0042] Each figure shows a reference coordinate system that is fixed to the transport device 10 so that it moves with the transport device in space. This reference coordinate system is used in the same way when considering a single container unit 18. With respect to this coordinate system and taking into account the operating orientation of the transport device 10 during the treatment process, the transport device 10 defines the upward direction as the positive z-direction, the forward direction as the positive y-direction, and the right direction as the positive x-direction. In the operating orientation, the forward direction is the transport direction in which the transport device 10 moves during the treatment process. The directions downward, backward, and left point in the opposite direction.A vertical line or plane thus runs in the z-direction, and a horizontal line or plane thus runs in an xy-plane. Furthermore, for the sake of clarity, not all parts and components are always labeled with a reference symbol in the figures.

[0043] The container units 18 each provide a container volume 20 for the material 12 and are arranged one above the other in several levels 22.i with i = 1 to n, maintaining a distance between them. The levels 22.1 to 22.9 shown in Figures 2 and 3 apply analogously to Figure 1, in which the lower five container units 18 in levels 22.1 to 22.5 are shown empty, and the four container units 18 arranged above them in levels 22.5 to 22.8 are shown filled with material 12.

[0044] The container volume 20 is defined by a circumferential container wall 24 and a container base 26, which are only labelled in Figure 4. The container wall 24 comprises a front end wall 24a, a rear end wall 24b, a left side wall 24c, and a right side wall 24d. The container wall 24 and the container base 26 form, in particular, a material tray; such tray-shaped material containers are referred to in practice as trays.

[0045] In the present embodiment, there are n = 9 levels and consequently nine container units 18. In modifications not specifically shown, n can also deviate from this and correspondingly more or fewer container units 18 may be encompassed by the transport device 10.

[0046] Two container units 18 define a container pair 28, each consisting of a lower container unit 18a and an upper container unit 18b. A flow space 30 is formed between these units, extending between a flow inlet 32 ​​on an inlet side 34 of the container pair 28 and a flow outlet 36 on an outlet side 38 of the container pair 28. Figure 6 shows a container pair 28, the lower container unit 18a of which is shown with a dashed line. Here, the inlet side 34 and the outlet side 38 are on opposite sides of the container pair 28; however, this arrangement can be modified.

[0047] Passages also remain on the front and back of the container pair 28, so that the flow chamber 30 is fluidically connected to the surroundings there as well. In a modification, however, the flow chamber 30 can also be closed or largely closed there, so that overflow is at least reduced. For example, the end walls 24a and 24b of a container unit 18 can extend downwards to such an extent that the end wall 24a, 24b of an upper container unit 18b comes close to or slightly overlaps the lower container unit 18a.

[0048] In the transport device 10, the container pairs 28 are aligned such that all inlet sides 34 and outlet sides 38 are located on the same side, thus defining the inlet side 34 and the outlet side 38 of the transport device 10.

[0049] In the present embodiment, viewed from bottom to top, the upper container unit 18b of a container pair 28 is always the lower container unit 18a of the next container pair 28 in the upward direction. This is illustrated in Figure 1 with reference to the lower three container units 18 in levels 22.1, 22.2 and 22.3.

[0050] In this setup, for a number of n container units 18, there are a number of n-1 container pairs 28, i.e., for the nine container units 18 shown here, there are consequently eight container pairs 28. The upper container unit 18 of the uppermost container pair 28 is not filled with material 12 during the treatment, but merely serves as a cover.

[0051] To ensure that the container units 18 are arranged while maintaining the required distance and to determine the distance, the transport device 10 includes a spacing structure 40.

[0052] As shown in Figures 4, 5 and 6, the spacing structure 40 in the present embodiment comprises support legs 42 and complementary support surfaces 44 on each container unit 18, wherein the container units 18, the support legs 42 and the support surfaces 44 are complementary to each other in such a way that the container units 18 can be placed on top of each other and stacked. In the present case, the container units 18 are rectangular in plan view and each corner area, i.e., where an end wall 24a or 24b meets a side wall 24c or 24d, has a downwardly projecting support 42. Complementarily, each container unit 18 has an upwardly projecting support surface 44 at each of its four corners, so that in the case of a pair of containers 28, the upper container unit 18 with its support 42 can be placed on the support surfaces 44 of the lower container unit 18.This is further illustrated in Figure 4 by means of a close-up, in which the mounting surface 44 is bounded by dashed lines.

[0053] As can also be clearly seen there, each mounting surface 44 is flanked radially on the outside by a retaining wall 46 in such a way that slippage and movement of two container units 18a and 18b of a container pair 28 relative to each other in the xy-plane is prevented.

[0054] In a variation, the support legs 42 can also point upwards and the support surfaces 44 downwards. In this case, an upper container unit 18 is placed with its support surfaces 44 onto the support legs 42 of the lower container unit 18.

[0055] In another variation, not shown in detail, the spacer structure 40 can also be designed as a separate component. For example, the spacer structure 40 can form a kind of frame that can accommodate and support the container units 18. For this purpose, a frame structure with horizontal guide rails is suitable, into which the container units 18 can be inserted, and which have corresponding horizontal bearing rails or bearing ribs for this purpose.

[0056] In the transport device 10 illustrated in Figure 1, the uppermost container unit 18, which is again separately designated 18', is shown empty and is also provided with support legs 42' that are shorter in the vertical direction than the support legs 42 on the other container units 18. The uppermost container unit 18' serves as the upper cover 48 of the material 12 located in the container unit 18 below it. 2. Process gas guidance device and flow guide structure

[0057] The transport device 10 comprises a process gas guiding device 50, which provides a flow guide structure 52 on the inlet side 34 of a pair of containers 28. This flow guide structure deflects a process gas flow 16 striking the flow guide structure 52 such that it flows through the flow inlet 32 ​​towards the container volume 20 of the lower container unit 18a of the pair of containers 28. As a result, the main flow direction of the process gas flow 16 acquires a vertical directional component that it did not previously possess.

[0058] In the present embodiment, a flow guide structure 52 is provided for each pair of containers 28. Furthermore, in this embodiment, a flow guide structure 52 is provided on both sides, left and right, of each pair of containers 28. The inlet side 34 and the outlet side 38 are then defined when the transport device 10 is used in the treatment process, as will become clear below. In a modification, the flow guide structure 52 can also be present on only one side of the pair of containers 28.

[0059] The flow guide structure 52 is provided in particular by a flow surface 54, which is formed by or on the side wall 24c, 24d of the upper container unit 18b. The flow surface 54 is inclined downwards at a flow angle α relative to a horizontal xy-plane, in the direction from the flow inlet 32 ​​to the vertical central plane 56 of the upper container unit 18b. This is illustrated in Figure 6.

[0060] A flow surface 54 is formed in particular by the fact that the respective side wall 24c or 24d is correspondingly angled and has an angled profile in section with a lower section 58 and an upper section 60, wherein the lower section 58 provides the flow guide structure 52.

[0061] In one variation, the flow surface 54 can also be provided by a separate component that is attached to the outside of the side wall 24c, 24d.

[0062] In the present preferred embodiment, the flow angle is a = 45°. The upper section 60 extends vertically. In variations, the respective side wall 24c, 24d can also be inclined relative to a horizontal xy-plane by a flow angle α, but without having an angled profile within itself. This is illustrated in Figure 6 by an additional right side wall 24'd, shown with a dotted line.

[0063] The flow angle α can also be shallower or steeper than 45° in further variations. Furthermore, as explained at the beginning, the flow angle can, in particular, lie between 10° and 80°, between 25° and 65°, or between 40° and 50°.

[0064] The flow surface 54 shown here is a flat surface. However, the flow surface 54 can also be convex or concave, so that the flow angle α changes along the flow surface 54. Furthermore, the flow surface 54 can also be defined by a sequence of ribs or the like. Alternatively or additionally, the flow surface 54 can follow the shape of a circular cylinder.

[0065] The flow angle a as well as the curvature of a convex or concave curved flow surface 54 and the radius r of a circular cylinder, which underlies a possibly formed circular cylindrical surface, are determined with the aim of generating the most effective turbulence possible in the flow space 30.

[0066] In a modification not specifically shown, the process gas guidance device 50 may not be formed on or through the container units 18, but may be provided by a separate component. For example, the process gas guidance device 50 may be integrated into the frame structure described above as a modification of the spacer structure 40. A flow guide vane, for example, may then be provided as the flow guide structure 52, which provides the flow surface 54.

[0067] In the embodiment described here, the container units 18 of the transport device 10 are arranged one above the other in alignment with each other. In variations not shown, a lateral offset between two treatment units 18a, 18b of a container pair 28 and / or between two container pairs 28 may also be provided. All components of the transport device 10, and thus the transport device 10 as a whole, are made of stainless steel, with the nickel-chromium-iron alloy EN 2.4851 (NiCr23Fe15Al) being particularly suitable.

[0068] 3. Treatment device

[0069] A transport device 10 designed in this way is used in a treatment device 62, in which a treatment process is carried out in which the material 12 is treated with the process gas 14. Figure 7 schematically shows, as an example of such a treatment device 62, a partial section of a treatment furnace 64 with a process chamber housing 66.

[0070] Within the process chamber housing 66, a process chamber 68 is defined through which the material 12 is conveyed. For this purpose, the treatment furnace 64 provides a conveying system 70 comprising several transport devices 10, which are loaded with the material 12 and conveyed accordingly through the process chamber 68. As mentioned above, the transport device 10 is conveyed in its forward direction in its operating orientation.

[0071] The process chamber housing 66 can be the outer housing of the treatment device 62 as such, but the process chamber housing 66 can also be arranged in a separate outer housing of the treatment device 62, which is not shown here.

[0072] The conveying system 70 comprises a slide 72 on which the transport devices 10 are pushed through the process chamber 68. For this purpose, the transport device 10 is mounted on a push plate 74, which is pushed along the slide 72. The conveying system 70 also includes a push system, known per se and therefore not shown in detail, with which several transport devices 10 are pushed in a series abutting each other through the process chamber 68. The transport devices 10 are oriented with their front end wall 24a facing forward in the transport direction and with their inlet side 34 facing left or right. The treatment device 62 comprises two parallel conveying strands 76, of which only the left conveying strand 76 is shown in the figure, in which the transport device 10 is oriented with its inlet side 34 facing left. However, only one conveying strand 76 may also be provided.

[0073] The treatment device 62 comprises a process gas system 78, with which the process gas 14 is injected into the process chamber 68 in the form of process gas streams 16. The process gas 14 is injected laterally into the respective area of ​​the process chamber 68 next to the transport device 10 and directed towards the inlet side 34 of the transport device 10, as defined in this way. As a result, process gas streams 16 encounter the flow guide structures 52 of the process gas guidance device 50 on the inlet side 34 of the transport device 10.

[0074] For the transport device 10 on the second conveying line 76, which is not fully visible in Figure 7, the process gas 14 is injected from the right side. Because a flow guide structure 52 is provided on both the left and right sides of a pair of containers 28, the transport device 10 can be used there without changing its orientation. The inlet side 34 is then defined on the other side of the transport device 10, namely where the process gas 14 is injected from the right side. If the flow guide structure 52 is provided on only one side, the transport device 10 can be used rotated by 180°.

[0075] Figure 8 illustrates that process gas flows 16 are deflected by each flow guide structure 52 of a container pair 28 such that they flow through the flow inlet 32 ​​into the flow chamber 30 and towards the container volume 20 of the lower container unit 18a of the respective container pair 28. As mentioned above, the direction of the process gas flow 16 acquires a vertical directional component that it did not previously possess, which can be seen in Figure 8, where only the container pair 28 is marked with a reference symbol, by the thicker flow lines. The process gas flow 16 is generally deflected again by or at the surface of the material 12, or within the material 12 itself, which is located in the container volume 20. Overall, the material 12 located in the container volume 20 of the lower container unit 18a is effectively exposed to the process gas 14.This results in eddies and turbulence 80, which are schematically indicated in Figure 8 and promote gas exchange, in which process gas 14 is mixed with the material 12 and reaction gas 80 already released from the material is carried along by the gas stream and discharged from the flow chamber 30 through the flow outlet 36.

[0076] At the outlet side 38 of the transport device 10, the atmosphere of the process chamber 68 is extracted by a suction system, shown only schematically in Figure 7 and designated overall by 84, through several suction openings 86 located forward in the conveying direction.

[0077] The process gas system 78 comprises a nozzle arrangement 88 with which process gas streams 16 are selectively directed onto one or more, in this case all, flow guide structures 52 of the process gas guidance device 50. Figure 8 illustrates this with the superimposed pairs of arrows. For this purpose, the nozzle arrangement 88 is specifically designed as a nozzle arrangement 88 with slot nozzles 90.

[0078] By coordinating the flow guide structure 52 with the process gas system 78, the mixing of the material 12 with the process gas 14 and thus the treatment process can be optimized in a plant-specific manner.

Claims

PATENT CLAIMS 1. Transport device for storing and transporting material (12) during a treatment process, in particular for the production of battery material, in which the material (12) is treated with a process gas (14), comprising a) several container units (18), each providing a container volume (20) for the material (12) and arranged in several levels (22.i) are arranged one above the other while maintaining a distance; wherein b) each pair of container units (18a, 18b) defines a container pair (28) with a lower container unit (18a) and an upper container unit (18b) arranged above it; c) a flow space (30) is formed between the lower and the upper container units (18a, 18b) of the container pair (28), which extends between a flow inlet (32) on an inlet side (34) and a flow outlet (36) on an outflow side (38); characterized in that d) the transport device (10) comprises a process gas guiding device (50) which provides a flow guiding structure (52) for a pair of containers (28) on its inlet side (34), with which a process gas flow (16) striking the flow guiding structure (52) is deflected in such a way that it flows through the flow inlet (32) in the direction of the container volume (20) of the lower container unit (18a) of the pair of containers (20).

2. Transport device according to claim 1, characterized in that a respective flow guide structure (52) is provided for each existing pair of containers (28).

3. Transport device according to claim 1 or 2, characterized in that a flow guide structure (52) is provided on each of two opposite sides of a container pair (28).

4. Transport device according to one of claims 1 to 3, characterized in that the flow guide structure (52) is provided by a flow surface (54) on a side wall (24c, 24d) of the upper container unit (18b) of the container pair (28).

5. Transport device according to claim 4, characterized in that the flow surface (54) is inclined downwards in a flow angle (a) relative to a horizontal plane in the direction from the flow inlet (32) to the vertical median plane (56) of the upper container unit (18b).

6. Transport device according to claim 5, characterized in that the flow angle (a) is between 10° and 80°, between 25° and 65°, between 40° and 50° or 45°.

7. Transport device according to claim 5 or 6, characterized in that the flow surface (54) is planar or convex or concave curved and / or is defined by a sequence of ribs or the like and / or follows a circular cylindrical surface.

8. Transport device according to one of claims 1 to 7, characterized in that the process gas guidance device (50) with flow guidance structures (52) is designed as a separate component.

9. Transport device according to one of claims 1 to 7, characterized in that a flow guide structure (52) is formed by or on a side wall (24c, 24d) of the upper container unit (18b).

10. Transport device according to claim 9, characterized in that a side wall (24c, 24d) of the upper container unit (18b) is bent and has an angled profile in section with a lower section (58) and an upper section (60), wherein the lower section (58) provides the flow guide structure (52).

11. Transport device according to one of claims 1 to 10, characterized in that the distance between two treatment units (18) is determined by a spacer structure (40).

12. Transport device according to claim 11, characterized in that the spacer structure (40) is designed as a separate component, in particular as a frame from which the container units (18) can be received and stored.

13. Transport device according to claim 11, characterized in that the spacer structure (40) comprises support legs (42) and complementary support surfaces (44) on each container unit (18), so that the container units (18) can be placed on top of each other and stacked.

14. Treatment device for treating material (12) with a process gas (14), in particular for the production of battery material, comprising a) a process chamber (68) defined in a process chamber housing (66); b) a process gas system (78) by means of which the process gas (14) can be injected into the process chamber (68); c) a conveying system (70) by means of which the material (12) can be conveyed through the process chamber (68); characterized in that d) the conveying system (70) comprises several transport devices (10) according to one of claims 1 to 13.

15. Treatment device according to claim 14, characterized in that the conveying system (70) comprises a sliding track (72) on which the transport devices (10) can be pushed through the process chamber (78) on a push plate (74).

16. Treatment device according to claim 14 or 15, characterized in that the process gas system (78) includes a nozzle arrangement (88), in particular a nozzle arrangement (88) with slot nozzles (90), comprising process gas flows (16) by means of which process gas flows can be directed towards one or more of the flow guidance structures (52) of the process gas guidance device (50).

17. Method for treating material (12) with a process gas (14), in particular for the production of battery material, wherein the material (12) is conveyed through a process chamber (68) in a transport device (10), characterized in that a transport device (10) according to one of claims 1 to 13 or a treatment device (62) according to one of claims 14 to 16 is used.

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