JPS58183788A - Machine for compacting coal for coke - Google Patents

Abstract

PURPOSE:A mixed coal of high coking coal and weak coking coal is introduced into a molding frame and compacted was vibrations are applied to the coal to produce coal for coke with high density in high productivity. CONSTITUTION:A mixed coal of high coking coal and weak coking coal C is introduced through chute 11 into molding frame 1 and guide rollers 5 are operated to introduce the compaction rod 3 from the upper position into the frame 1 so that the foot 9 at the lower end is placed on the surface C1 of the powder coal C to be compacted. (At this time, the compacting rod is unconnected from the chuck (6). After completion of falling down of the compaction rod 3, the chuck 6 is operated to ensure the holding of the rod 3 and the vibrator 8 is operated on the lower side of the compaction rod 3. Under this state, the cylinder rod 7a is extended to move the rod 3 down for compaction. Thus, the compaction and molding of the coal C is effected as the vibrator causes dynamic friction between fine particles mutually.

Description

[Detailed Description of the Invention] This apparatus relates to a coking coal compaction device, which is capable of molding high-density coking coal by compacting crushed pulverized coal while applying vibrations, thereby making it possible to compact coking coal. Providing high-quality coke even if the price is low! The present invention relates to a coal compaction device for coke that can improve the productivity of a coke oven.

General 1 (Ninox, which is commonly used in iron-making furnaces, etc., is desired to be as hard as possible because it is subjected to physical abrasion and crushing action in the furnace.

By the way, in order to produce such hard coke, it is desirable to use so-called strong caking coal, which has a high caking property, but reserves of this strong caking coal are small and expensive, so it is generally not used. Coking coal is made by blending strong caking coal with weakly caking coal and slightly caking coal, which have low caking properties and are inexpensive.However, if the mixing ratio of weakly caking coal is increased, Strength of coke: W tends to be low in weight. Therefore, as a method to obtain coke with high strength even if the mixing ratio of weakly caking coal with low caking property is increased, The standard method is to mix the charcoal into powder and then compact it.

Here, an example of a method for compacting coking coal will be explained based on the drawings.

As shown in Fig. 1, numeral 1 is a horizontally elongated formwork with an open upper part, and powdered coal to be treated C, which is a mixture of strongly coking coal and weakly coking coal, is supplied from this open part 2. Then, the supplied powdered coal C to be treated is compacted and compacted by moving a number of consolidation rods 3 provided along the longitudinal direction of the formwork 1 downward in the formwork 1. .

By the way, in the above-mentioned compaction device, the compaction rod 3
Gradually press down to simply add the powdered coal C in the formwork 1.
Since the pressure molding is only performed, the air existing between the powder particles is not released and is compressed in a sealed manner. Therefore, when the pressing force of the compression rod 3 is released, the compressed air expands. This acts like a so-called air spring, and it is difficult to produce coke cake that is sufficiently highly consolidated without loosening the highly consolidated pulverized coal C.

The reason why the air between the powdered coal particles does not escape is because the powder particles are pressed together, which creates a large static frictional force between these particles, and this static frictional force causes the air to flow between the powdered coal particles. This is because the release is prevented.

In addition, the above-mentioned coke with a low compaction density has a small contact area between the pulverized coal particles, so when carbonizing it, the thermal conductivity is low FL, and carbonization takes a long time. Not only does this cause the inconvenience of lowering productivity, but there is also the problem that high-quality coke with sufficiently high strength cannot be obtained.

The present invention was devised to effectively solve the above-mentioned problems, and its purpose is to apply vibration to the pulverized coal to be treated when molding coke. By releasing the air between powdered coal particles and consolidating it, it is possible to form a highly dense coke, which not only makes it possible to obtain high-quality coke even when the carbon quality is low, but also improves coke productivity. The object of the present invention is to provide a raw coke compaction device that can improve coke production.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings.

First of all, FIG. 2 is a schematic vertical cross-sectional view showing a preferred embodiment of the present invention, and 1 is a mold for compaction molding a mixed powdered coal C of strongly coking coal and weakly coking coal. be.

The formwork 1 has an open portion 2 open at the top and is formed as a horizontally long container with a rectangular cross section. A large number of hanging frames 4 are provided above the formwork 1 along the longitudinal direction of the formwork (only 1 is shown in the illustrated example), which are suspended vertically and movably.

A consolidation rod 3 is provided on the hanging frame 4 so as to be movable up and down while being inserted and guided into the formwork 1 from the open part 2 by being held by guide rollers 5 provided in two stages, upper and lower. It is being

This consolidation rod 3 has a chuck device 6 at its center in the longitudinal direction.
At the same time, this chuck device 6 is attached to a cylinder rod 7a of a compression cylinder 7 that is integrally fixed with the suspension frame 4, and therefore, the chuck device 6
By extending the cylinder rod 7a of the consolidation cylinder 7 while gripping the consolidation rod 3, the consolidation rod 3 can be moved downward in order to pressurize and consolidate the pulverized coal C to be treated.

A vibrating body 8, which is a feature of the present invention, is provided below the consolidation rod 3, that is, on the consolidation side, and which generates vibration by, for example, electric means. A foot 9 for contacting and pressing the surface C1 of the powdered coal C to be treated is attached via a vibration isolating rubber 10, and the vibration generated by the vibrating body 8 is transferred to the vibration isolating rubber 10. 9, it is possible to pressurize tL while applying it to the pulverized coal C to be treated. That is, by applying vibration to the pulverized coal C to be treated, dynamic friction is applied between the pulverized coal particle phases h1, and the compressed air trapped therein can be released into the atmosphere.

In the above embodiment, the vibration isolating rubber 10 was interposed between the vibrating body 8 and the seventh part 9 to alleviate the transmission of vibration, but it is of course possible to omit this. .

Next, the operation of the present invention will be explained.

First, a mixture of powdered coal C to be treated, which is a mixture of strongly caking coal and weakly caking coal, is introduced into the formwork 1 through the chute 11 as appropriate. When the introduction of the pulverized coal to be treated is completed, the guide 5 is operated, the consolidation rod 3 positioned above is lowered and inserted into the formwork 1, and the foot 9 at the lower end is inserted. Place it on the surface C11 of the pulverized coal C to be treated (at this point, the consolidation rod 3
and the engagement with the chuck device 6 has been released). When the consolidation rod 3 has been lowered, the chuck device 6 is operated to securely grip the consolidation rod 3, and the vibrating body 8 provided on the gravity consolidation side of the consolidation rod 3 is activated. . Then, in this state, the 7 cylinder rod 7a of the consolidation cylinder γ is extended to move the consolidation rod 3 downward. As a result, the pulverized coal C to be treated is compacted for a certain period of time while generating dynamic friction between the pulverized coal particles due to vibrations transmitted from the vibrating body 8 via the vibration isolating rubber 10 and the foot 9. This kinetic frictional force is much smaller than the static frictional force that occurs between the powdered coal particles when compaction is simply performed without adding vibration as in the conventional example, and therefore, the compressed air trapped between the powdered coal particles This pulverized coal C can be highly compacted so that the pulverized coal C can escape easily, and the compaction rod 3) does not loosen even after the extrusion force is released. Since the compressed air from the discharged cylinder 1'-X does not act like an air spring as in the conventional example, it is possible to reduce energy consumption through compaction.

In this way, when consolidation is completed, chuck placement 6
The operation of is released, and the connection between this and the consolidation rod 3, i, is released. Then, the guide roller 5 is activated to move the consolidation rod 3 upward, and then (1) the pulverized coal C to be treated is supplied and the above-described operation is repeated to form coke. Incidentally, as the height of the pulverized coal C to be treated increases, it goes without saying that the hanging frame 4 should be raised accordingly.

In this way, when the pulverized coal C to be treated is compacted, vibration is applied to the pulverized coal to create dynamic friction between the pulverized coal particles while pressurizing the pulverized coal, so that the compressed air between the pulverized coal particles can easily escape. It is possible to produce compacted coke monthly.

In short, according to the present invention, the following excellent effects can be achieved.

(1) When compacting the coke, we applied vibration to the pulverized coal to release the compressed air between the pulverized coal particles while consolidating it. This allows us to compact the coke with a high degree of consolidation with less compaction energy. can be manufactured.

(2) Therefore, since the pulverized coal particles are brought closer together, the thermal conductivity between them is improved, the carbonization time can be further shortened, and coke productivity can be improved as much as possible.

(3) Since powdered coal can be compacted to a high density and molded into coke, it is possible to produce coke of good quality that can withstand physical abrasion even if the blending amount of low-quality coal is increased.

(4) Since the structure is simple, it can be easily adopted.

[Brief explanation of drawings]

FIG. 1 is a schematic partially cutaway perspective view showing a conventional coke crude coal compaction device, and FIG. 2 is a schematic vertical sectional view showing a coke crude coal compaction device according to a preferred embodiment of the present invention. In the figure, 1 is a formwork, 2 is an open part, 3 is a consolidation rod, 5 is a guide roller, 6 is a chuck device, 7 is a consolidation ring, 7
a is a cylindrical blonde, 8 is a vibrator, and 9 is a foot. Patent Applicant Ishikawajima Harima Heavy Industries Co., Ltd. Representative Patent Attorney Nobuo Kinutani Figure 1 Figure 2

Claims (1)

[Claims] a formwork which is open in the formwork and accommodates the pulverized coal to be treated therein; a consolidation shell which is inserted through the open part of the formwork and moves to pressurize the pulverized coal to be treated; 1. A coke river consolidation device characterized by comprising a vibrating body for applying dynamic friction to powdered coal to be treated.