KR920004090Y1 - Device for equal dispersion of raw material of the blast furnace - Google Patents

Abstract

No content.

Description

Uniform Dispersion Device of Raw Material

1A, 1B, and 1C are schematic cross-sectional views showing particle size distribution and cutting patterns in a storage hopper generally used, and FIG. 1A is a state of loading of raw materials in a hopper, and FIG. 1B is a raw material in an initial hopper Fig. 1c is a distribution state diagram of raw materials in the hopper at the end of cutting.

2 is a main portion perspective view showing a uniform charging device of a conventional surge hopper (Surge hopper).

Figure 3a, Figure 3b is one embodiment of the present invention, Figure 3a is a perspective view showing a uniform charging device of the cone-shaped dispersion plate, Figure 3b is a longitudinal cross-sectional view of Figure 3a.

Figure 4 is an enlarged perspective view of the main portion of the triangular rod-shaped dispersion plate showing an embodiment according to the present invention.

Figure 5 is a use state showing the particle flow in the dispersion plate according to the present invention.

Figure 6 is a graph showing the particle size and particle size change according to the outflow time according to the prior art.

7 is a graph showing the particle size and particle size change according to the outflow time when using a cone-shaped dispersion plate according to the present invention.

* Explanation of symbols for main parts of the drawings

1, 2: cone type first and second dispersion plate 3: connecting rod

4, 5: triangular rod type first and second dispersion plates

The present invention is segregated into the raw material of granules and granules in the hopper when the grain, metal powder, raw material ore (hereinafter referred to as "raw material") is charged into the storage hopper (hopper). It relates to a uniform dispersion device of the raw material that can stabilize the quality of the product by suppressing the phenomenon to supply the raw material uniformly.

In general, when the raw materials 6a and 6b are supplied to the hopper 8a, roughly the raw materials 6a and 6b are handled intensively, as shown in FIG. 1a centering on the point where the raw materials 6a and 6b are supplied. Stacked in a columnar shape, the surface of the columnar raw material (6a, 6b) acts as an inclined surface so that the fine-grained raw material (6a) is stacked in the center of the hopper (8a), the granulated raw material (6b) at the edge This results in a classification phenomenon in which the fine particles and granulation of raw materials 6a and 6b are segregated.

At this time, the phenomenon of the accumulation and segregation of the raw material (6a, 6b) depends on the amount of feedstock, the angle of repose, the size of the hopper, it is known that segregation occurs during all charging process.

When the raw materials 6a and 6b charged as described above are cut out from the hopper 8a, as shown in FIG. The raw material 6a is first cut out and a phenomenon in which the size of the particles increases with time occurs.

Therefore, such a phenomenon is a major cause for the quality variation of the product in the manufacturing process of handling the raw materials 6a and 6b having different ingredients and quality by particle size, in particular among the raw materials 6a and 6b.

In the conventional improvement method for reducing particle size segregation of raw materials in the general storage hopper, the raw materials 6a and 6b are supplied by reducing the width and length of the general hopper 8a as shown in FIG. The feeder 7 is loaded while reciprocating from side to side or back and forth while the speed is reduced, using a drum hopper 9 type cutting device, and several small hoppers installed on the hopper 8a. A method of attaching a cone-shaped cutout control device to the cutout part 8b in the hopper 8a, a method of using two sets of cutout devices with the shape of the lower end of the hopper 8a as a "W" shape, and the like. have.

However, among these conventional methods, in the case of first reducing the supply speed of the raw materials 6a and 6b supplied into the hopper 8a and reciprocating the supply device, the efficiency of the supply device is low and the direction in which the supply device moves. Segregation in the horizontal direction (see FIG. 2) is reduced, and the storage efficiency according to the shape of the hopper 8a is reduced.

In addition, since the equipment cost of the drum pit 9 is high and economically unreasonable, it is used only in special cases.

And secondly, in the case of distributing and installing several small intermediate hoppers on the hopper 8a, a lot of equipments for the conventional apparatus are required, and there is a problem that the installation cost is high.

Third, in the case of attaching the cone-shaped cutout control device to the cutout portion 8b in the hopper 8, the segregation phenomenon of the raw materials 6a and 6b can be greatly reduced, but wettable raw materials cannot be used. There are a lot of restrictions on the raw materials, there is a disadvantage that the maintenance of the equipment in the continuous operation is not easy, the situation is used only in special cases.

Fourth, the method using the W-shaped hopper and two sets of cutting devices cannot be a fundamental solution, and the storage efficiency of the hopper 8a is low, and the installation cost is relatively high compared with the conventional hopper 8a.

Therefore, these conventional methods are generally used in a limited manufacturing process, which is expensive because of the high equipment cost.

The present invention was devised to solve the problems such as the reduction of the storage efficiency according to the shape of the hopper in the conventional method, the constraint of the raw materials, the expensive equipment cost, and the deterioration of the efficiency of various peripheral devices, especially when supplying the raw material into the hopper. It is an object of the present invention to provide a uniform dispersing device of raw materials which prevents segregation of fine granules in the hopper and granules in the hopper by dispersing the raw materials using a simple structure.

As an implementation structure for achieving the object of the present invention, by installing a medium (hereinafter referred to as "dispersion plate") that can uniformly disperse the raw material on the top of the storage hopper it is possible to fundamentally reduce segregation during charging of the raw material .

Hereinafter, the implementation structure according to the present invention according to the drawings in detail.

The present invention is a storage hopper (8a) in the device for loading the raw material (6a, 6b) transferred to the conveyor belt 10 as shown in Figure 3a, 3b and 4 in the storage hopper (8a) The primary dispersion plate 1 and the secondary dispersion plate 2 are provided at the point where the raw materials 6a and 6b that have passed through the primary dispersion plate 1 fall on the upper portion of the first dispersion plate 1. .

3a and 3b is an embodiment of the present invention, the first and second dispersion plates (1, 2) are formed in a cone (cone) shape, the lower end of the cone-shaped primary dispersion plate 1 and the cone shape The connecting rods 3 are fixed between the upper ends of the secondary dispersion plates 2, and the connecting rods 3 are three or more, so that the trivets are configured.

4 is another embodiment of the present invention, wherein the first and second dispersion plates 4 and 5 are triangular rods, and both ends of the first and second dispersion plates 4 and 5 are stored in the storage hopper 8a. ) Is fixed to the upper end portion.

Cone 1, secondary dispersion plate (1), (2) of the present invention is fixed to the upper end of the conical storage hopper (8a), triangular rod first, secondary dispersion plate (4), which is another embodiment of the present invention, 5 is fixed to the upper end of the sintered surge hopper 8a as shown in FIG.

The operation and effect of the embodiment structure according to the present invention configured as described above will be described.

That is, according to the present invention, as illustrated in FIG. 5, the raw materials 6a and 6b transferred to the conveyor belt 10 are dispersed in various directions or both sides by the first dispersion plate 1 or 4. The raw materials 6a and 6b dispersed in the primary dispersion plate 1 or 4 are generally supplied to the storage hopper 8a by increasing the dispersion degree by the secondary dispersion plate 2 or 5. The effect of suppressing segregation in the charging process can be obtained.

In this way, the raw materials 6a and 6b dispersed and loaded into the storage hopper 8a have a multi-stage dispersion charging effect by the operation of the first and second dispersion plates. Thus, the raw materials 6a and 6a in the storage hopper 8a can be obtained. The feed phenomenon of 6b) is formed concentrically (6a, 6b) are stacked concentrically, and interfering with each other interfering with each other, the raw material of fine granules (6a) and granules ( It is possible to uniformly distribute the particle sizes of the raw materials 6a and 6b by suppressing segregation and classification of 6b).

EXAMPLE

6 and 7 show changes in particle size and particle size by the outflow time when the conventional charging method is used and when the cone type first, secondary dispersion plates (1) and (2) of the present invention are used.

In this case, the sample used was loaded with 1.7 kg of sand with an average particle diameter of 0.8 mm, and the total outflow time was 36 seconds, and samples were taken at intervals of 5 seconds to measure the particle size distribution.

In the case of the conventional charging method of FIG. 6, it can be seen that the average particle diameter of the effluent rapidly increases with each outflow time, and as shown in FIG. 7, the cone type first, secondary dispersion plates 1, and (2) of the present invention ), The initial part is similar to the conventional charging method of FIG. 6, but the particle size change of the effluent is gradually decreased.

Accordingly, it can be seen that the cone-shaped first and secondary dispersion plates 1 and 2 of the present invention have an effect of significantly reducing particle size segregation when charging the raw materials 6a and 6b into the storage hopper 8a. have.

In addition, when the triangular rods first and secondary dispersion plates 4 and 5, which are other embodiments, are provided on the upper end of the storage hopper 8a, the triangular rods 1 and 2 through 4 and 5 are provided. By distributing and supplying the raw materials 6a and 6b in the storage hopper 8a, it is possible to solve the problem of limitation of the raw materials shown in the conventional charging method, and by classifying the raw materials 6a and 6b in the storage hopper 8a. Segregation can be reduced to achieve uniform particle size.

In particular, the physical properties of each particle size change is severe, and in the case of a raw material having a wide particle size range, the particle size can be uniformly supplied to obtain an effect of improving the quality of the product.

In addition, since the present invention has a simple structure, the equipment cost is low, and since it is installed on the storage hopper 8a, it is a practical design that facilitates maintenance work during continuous operation.

Claims (1)

In the apparatus for charging the raw material (6a, 6b) transferred to the conveyor belt (10) in the storage hopper (8a), the primary dispersion plate (1) on the upper portion of the storage hopper (8a) and the lower portion A device for uniformly dispersing raw materials, characterized in that the secondary dispersion plate (2) is fixed.