JPS62502030A - drum for agglomeration - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] drum for agglomeration The present invention is a drum for agglomerating fine-grained (powder) material, the vertical axis of which is It is rotatably supported and has an inlet opening on one end and an outlet opening on the other end. Concerning what you have.

The inlet opening of this kind of drum is fed with granular material and under at least a liquid supply. It accumulates in agglomerates of different sizes.

The agglomerates formed in this way are often dried in an oven before being transferred to the treatment process. . During the drying of the agglomerates, it is actually particularly difficult to dry the agglomerates if they are of different sizes. Small agglomerates are quickly dried and heated in any way possible, but large agglomerates are not sufficiently heated. Not dried.

Smaller agglomerates are collected in narrow piles and the hot air formed in the furnace is usually not needed. No flow can flow through this pile at the strength that it is capable of. For this reason, conglomerates ; to the extent possible that agglomerates of equal size are produced and can be charged into the furnace; The aim is to control the In order to create agglomerates of equal size as much as possible, The agglomerate is placed in a wide dish-like body containing the agglomerate in its inner chamber. This type of dish is relatively short It is characterized by its length and relatively large diameter. Its vertical axis line is It has an upward slope in the direction of the mouth opening, and the agglomerate is rolled in a rotating dish for a predetermined residence time. After working, it falls through the exit opening.

Depending on the length of residence time, the agglomerate emerging from the outlet opening is packed with fine-grained material and a dish. Its size varies depending on the liquid introduced. For further processing of agglomerates, Under correct metering, the agglomerates coming out of the outlet opening are of equal size! The fact that you have one is important. This is important.

Taking into account the fact that the dish has a very short length, it is possible to The dosing of the particulate material must be done very carefully in order to extract the desired size agglomerates. Must be. Even a slight metering error will cause the agglomerate to become too large or too small.

In particular, agglomerates that are too large often have an undesirable moisture content due to post-treatment; It is unsuitable for the treatment of agglomerates.

Additionally, cones are used for agglomeration, and cones are relatively short, similar to saucers. It has vertical length. This cone also has an upwardly sloped longitudinal axis in the direction of the outlet.

This cone allows agglomerates with equal dimensions to be created. cone As long as both the plate and the plate have a very good classification effect, the classification effect will prevent the agglomeration from starting. Under the correct dosing of materials, they have equal size and can therefore be processed well. can.

Both dishes and cones are very sensitive to the starting material with which they are supplied, so If a drum with a downward slope in the direction of its outlet opening is used, then the drum is very Has poor classification performance. The drum is a saucer on one side and a plate on the other under equal driving power. Both of the cones have a large charge.

In order to avoid that agglomerates of different sizes have the disadvantages already mentioned, such A sieve is attached to the back of the eel drum, and the sieve separates the agglomerates according to their size. It will be done.

Sieving steps require additional investment and processing costs.

Despite relatively large charges, drums are therefore only economical and useful in special cases. It can be used for

(Problem to be solved by the invention) The object of the invention is to provide a drum of the type mentioned at the outset with which a good classification effect can be achieved. The aim is to improve the quality of sea urchins.

(Means for solving problems) The above problem is solved by a drum whose longitudinal axis slopes upward in the direction of the outlet opening. It will be done.

(Effect of the invention) Such a drum allows agglomerates of mutually equal size to be discharged from the outlet opening. What will be achieved will be achieved.

Due to its good classification effect, the drum makes the agglomerate go into the next processing step in a special classification process. It is suitable for classifying and supplying agglomerates so that they can be supplied immediately without any waste.

Due to the drum's relatively large length, the material can be moved from the inlet opening to the outlet opening. It has a long distance to be transported. During this process, agglomerates are formed, and their size varies in some places. The thickness can be selected according to the upper slope of the drum axis depending on your wishes. Wear. The desired agglomerate size can be adjusted by the drum according to preset parameters. can be determined. The product discharged from the drum is transferred to the cone on the one hand. Therefore, on the other hand, there is no need for dosing of starting material different from that obtained by the dish. It is a relationship.

Therefore, despite its good classification effect, the drum has a wide range of dosing errors. It's irrelevant.

According to a preferred embodiment of the invention, the upper slope is made variable depending on the residence time.

In this way, various starting materials can be loaded by selecting more or less large upslopes. Ram can be adapted. If desired, the upper slope can be applied to agglomerates of a certain size. is selected such that it can be discharged from the outlet opening without producing significant particulate material. . Separation of the agglomerates from the fine material is therefore not necessary, sb, i.e. the fine particles to the inlet opening of the drum. The return of grain material is also excessive.

Other details of the present invention can be understood from the drawings illustrating the agglomeration device and the description of the embodiments. Ru.

In the diagram: Figure 1 is a schematic diagram of a dish-shaped body; Figure 2 is a schematic diagram of a cone; Figure 3 is a diagram of a drum with a downward slope in the direction of the outlet opening; Figures 4a and 4b are diagrams of the drum with a downward slope in the direction of the outlet opening; Figure 3 shows a schematic diagram of a drum with an upward slope in the direction of the opening;

(Example) The drum consists of a drum body 1, a drive device 2, a filling device 3, and a lifting device 4.

The drive 2 is coupled to the drum body 1 in a suitable manner, for example by a gearing 5. There is. This gearing consists, for example, of spur gears, which drive gears face the drive 2. It is fixed to the outer surface 6 of the drum. A pinion (not shown) meshes with this spur gear. On is driven by drive device 2.

The inlet opening 3 comprises, for example, a screw conveyor 7 and a liquid intake 8 . Skri Both the conveyor 7 and the liquid inlet 8 lead to an inlet opening 9, which is connected to a cylindrical drum body. 10 is formed on one of both end faces.

The screw conveyor 7 is connected to a storage tank (not shown) via a material intake port 10. The storage tank contains particulate material 12 which is collected into agglomerates 11. fine grain material moves in the direction of the screw conveyor 7 through the intake port 10, and A. Fill the inner chamber 13 surrounded by the drum body 1 with the required amount of fine grain material 12 according to your wishes. to be transported to.

The drum body 1 is inclined by its longitudinal axis 14 to a support base 15 extending in the horizontal direction. It is supported by

This oblique bearing is located at its inlet in the direction of the outlet opening 16 facing the inlet opening 9. It takes the form of an upward slope of the drum body 1 from the opening 9. The agglomerate enters from this outlet opening 16. It is carried out of room 13. The tilt position of the drum body 1 is raised and lowered based on the upward slope of the vertical axis. Adjusted by means of a device 4, the lifting device is for this purpose located in the region 1 adjacent to the outlet opening 16. 7 grips the outer surface 6 of the drum body 1 facing the outlet opening. This lifting device 4 can be formed, for example, as a hydraulically driven piston 19, the cylinder 2 of which 0 is supported on a support stand 15.

Depending on the desired upper υ slope of the longitudinal axis 14, the piston 19 is more or less It is rolled out from 20.

For supporting the drum body 1, a pressure-flexible bearing 21 is provided between the piston 19 and the outer surface 6. can be provided. However, the bearing 2 3, 24, and its entire bearing surface is supported so as to be pivotable relative to the support base 15. It is also conceivable to support it on the lifting device 4.

After the drum body 1 undergoes rotational movement via the drive device 2, fine granule material is transferred via the filling device 3. A material 12 is charged into the inner chamber 13 of the drum body 1. A drum body that rotates the particulate material 12 Due to the inwardly charging movement of 1, an agglomerate 11 is formed in the inner chamber 13.

These agglomerates are the accumulation of the fine particulate material 12 at so-called granulation nuclei within the fine particulate material 12. Occurs due to This granular material 12 is placed in a deep hole adjacent to the filling device 3 of the drum body 1. Collected at location 25. On this particulate material 12 there is a large influence in the direction of the outlet opening 16. A large and medium agglomerate 26 is located.

On the large and medium agglomerates, the large agglomerates 11 are located on the filling surface, where they roll , finally reaching the outlet opening 16 from which it is discharged.

By this, liquid is fed into the particulate material into the inner chamber 13 at its inlet through the liquid intake port 8. Ru. With this liquid metering, large agglomerates 11 do not exceed a moisture content that is advantageous for after-treatment. It must be noted that

The drum body generally has a diameter between 0.5 and 3 m.

The length of the drum body 8 may be 8 to 10 m. Drum according to the size of the upper slope. The degree of filling is at least 10X, but preferably within 20-30%.

The slope is then selected between 1° and 45°, preferably between 3° and 20°. can be done.

The length to diameter ratio of the drum is at least 1 to 1, and generally greater.

A scraper 27 is fixed to the inner chamber 15 of the drum body 1. extending parallel to the longitudinal axis 14 through the drum body 1 and defining an interior chamber 13 of the drum body 1; It has a predetermined distance 28 from the inner surface.

This distance! 2B determines the layer thickness formed on the inner surface 29, and the liquid The body-enriched particulate material 1A12 adheres to the inner surface 29. In this method, scraper 2 7 prevents the inner diameter of the inner chamber from decreasing while the drum body 1 is in operation. At that time, the oyster and shi 27 The blades 30 provided facilitate separation of particulate material. The grain material to be separated is the distance y42 It is fixed on the layer which is separated by 8 and is integrated on the inner surface 29.

It is also possible to introduce the filling device 3 into the interior chamber 13 through the outlet opening 16 . this In the method the drum can be closed on its end face facing the outlet opening 16. . A liquid inlet 8 can also be provided in a similar manner.

The drum is rotated at a rotation speed of 5 to 20 r, p, m, and the selection is made by the drum body 1. depends on the diameter. Drum according to material to be agglomerated, amount, liquid added e.g. The body has a length of 7 m, a diameter of 1.5 m, and a rotation speed of 1 Or, p, m.

The agglomerate 11 within the inner chamber 13 is lowered or raised by the lifting device 1. Residence time can be influenced by width. Therefore, depending on the type of fine grain material 12, The supplied liquid and agglomerate formation are unaffected.

In contrast, the dish shown in Figure 1 requires very careful maintenance of the correct mixing ratio. must be

The agglomerate leaving the dish 31 due to the short residence time of the agglomerate 11 inside the dish 31 11 has too high a moisture content or an undesirable size as agglomerates 11.

The agglomerate 11 obtained in the cone 32 in a similar manner also Extremely sensitive to new mixing ratios.

Even within the cone 32 only very short residence times can be guaranteed; Agglomerates 11 of desired size should be formed.

Similar to the drum sloping upward towards the outlet opening 16 according to the invention as shown in FIG. Both the dish 31 and the cone 32 have a very good classification effect.

On the other hand, this classification effect is due to the downward slope toward the outlet opening 16, as shown in FIG. Ram 33 is missing.

The agglomerates 11, 26, which are most different in size, exit from the outlet opening 16.

With respect to the desired size of the agglomerate 11, a downwardly sloping dome towards the outlet opening 16 is thus formed. Ram 33 produced a fines content between 200 and 400%.

In consideration of such a bad classification effect, the agglomerate coming out of this drum 33 is additionally treated as an example. For example, it must be sorted using a sieve.

C) international search report

Claims (20)

[Claims] 1. A drum for agglomeration of fine-grained material, supported rotatably about its longitudinal axis. and has an inlet opening on one end face and an outlet opening on the other end face. in which the longitudinal axis (14) has an upward slope in the direction of the outlet opening (16). An agglomerate drum featuring: 2. The agglomerate drive according to claim 1, wherein the upward slope is variable depending on the residence time. Ram. 3. The agglomerate according to claim 1 or 2, having an upward slope of at least 1°. drum. 4. Claims 1 to 3, wherein the upward slope is between 1° and 45°. The agglomerate drum according to any one of the following. 5. Claims 1 to 4, wherein the upward slope is between 3° and 20°. The agglomerate drum according to any one of the following. 6. Claims 1 to 5, wherein the length to diameter ratio is at least 1:1. The agglomerate drum according to any one of. 7. Claims 1 to 6, wherein the length to diameter ratio is 5:1. The agglomerate drum according to any one of the above. 8. The drum has an inner chamber (13), the inner chamber being surrounded by the drum body (1). the inner surface (29) of the drum body facing its inner chamber (13) is smooth; 7. The agglomerate drum according to any one of paragraphs 1 to 7. 9. The drum body (1) is mounted on a bearing (21) with its outer surface (6) facing its inner surface (29). The bearing is mounted on a lifting device (4) adjustable in the direction of the drum body (1). Any one of claims 1 to 8 supported by: conglomerate drum. 10. The agglomerate door according to claim 9, wherein the lifting device (4) has a hydraulic drive. Ram. 11. Claims 1 to 10, wherein the drum has a diameter of 0.5 to 3 m. The agglomerate drum according to any one of. 12. Claims 1 to 11, wherein the drum has a length of 8 to 10 m. An agglomerate drum according to any one of the above. 13. The drum is connected to the drive (2) via a chain transmission, as claimed. An agglomerate drum according to any one of ranges 1 to 12. 14. The drum is connected to the drive device (2) via a gear system. The agglomerate drum according to any one of items 1 to 12. 15. Claims 1 to 1, wherein the drum has a degree of filling of at least 10%. The agglomerate drum according to any one of items 4 to 4. 16. Claims 1 to 15, wherein the drum has a filling degree of 20-30%. The agglomerate drum according to any one of the above. 17. In the inner chamber (13), at a predetermined distance from the inner surface (29) with respect to the longitudinal axis (14) Claims 1 to 16, in which the scrapers (27) extend in parallel. An agglomerate drum according to any one of the above. 18. The scraper (27) rotates the blade (30) in the opposite direction to the rotation direction of the drum body (1). The agglomerate according to any one of claims 1 to 17, having drum. 19. The drum is 3~20r. p. m. From claim 1, which has a rotational speed of 19. Agglomerate drum according to any one of the preceding clauses. 20. 16. Agglomerate drum according to claim 15, wherein the rotational speed is dependent on the drum diameter.