JPS6121473Y2 - - Google Patents

Description

[Detailed explanation of the idea]

The present invention relates to an improvement of a device for supplying raw materials for sintered ore to a sintering machine. In recent years, in the production method of sintered ore, when charging raw materials into pallets of a sintering furnace for the purpose of improving productivity, reducing fuel consumption, improving quality, etc., raw materials with low coke content are placed in the lower layer. In some cases, a so-called two-stage charging method is used, in which the upper layer is supplied with a raw material having a high coke content in layers. Two methods are possible to implement this two-stage charging method. One method is to use one conveyor line to alternately convey two types of raw materials with different compositions according to a time schedule. This method is economical because it does not require modification of the equipment, but it cannot be adopted if there is no margin in the time schedule. Another method is to use multiple conveyor lines to convey raw materials with different compositions, but this method also requires a large amount of expense for expanding equipment. This invention was proposed with the aim of making a two-stage charging method possible by conveying two types of mixed raw materials at the same time regardless of the time schedule by slightly improving the conventional single-line conveyor line. It is. As shown in FIG. 1, the raw material conveying device according to the present invention includes one series of conveyor lines 2 having a separation chute 9 at the rear end of the conveyor line 2 for separating the conveyed raw materials, and respective conveyor lines 3, 3'. , 6, 6' are coke supply devices 4, 4'.
A conveyor line 7 has mixers 5 and 5', and conveys the blended raw materials at the rear end of the conveyor line.
A two-line conveyor line 3, 3', 6, 6' having a collection chute 10 that gathers at the hopper, and a single-line conveyor line 7 having a bifurcated supply chute 11 at the rear end of the conveyor line 7 for supplying the blended raw materials to the hopper. This is a raw material conveyance device using a conveyor line. Below, regarding the sintering raw material conveying device of the present invention,
This will be explained using drawings. The sintered raw material cut out from the raw material tank 1 is conveyed by the first conveyor line 2 to the second conveyor lines 3 and 3'. The raw materials transferred from the conveyor line 2 to 3, 3' are provided at the upper part of the separation chute 9 at the rear end of the conveyor line 2, as shown in FIG.
They are easily separated by a partition plate 9a extending above the conveyor line 2, and loaded onto the following two conveyor lines 3, 3'. A predetermined amount of coke is added to the raw materials loaded on the conveyor lines 3, 3' by coke supply devices 4, 4', respectively, and the raw materials are transferred to mixers 5, 5'.
The raw materials are uniformly mixed by the conveyor lines 6 and 6' to form blended raw materials with different coke contents. As shown in FIG.
By means of a partition plate 10a lowered to the upper surface of the succeeding conveyor line 7 provided at the lower part of the conveyor line 7, the mixed raw materials of the conveyor lines 6 and 6' are loaded onto one conveyor line 7 without mixing with each other. . As shown in FIG. 4, the different mixed raw materials conveyed by one conveyor line 7 are
A partition plate 11a provided at the upper part of the forked chute 11 at the rear end of the conveyor line 7 and extending above the conveyor line 7 separates the conveyor line 7 without significant mixing, and the lower first surge hopper 8 and It is supplied to the second surge hopper 8'. Therefore, the first and second surge hoppers 8 and 8' store blended raw materials with different coke contents, for example, the blended raw materials with a higher coke content are stored in the second surge hopper 8'. As shown in Figure 1,
On the sintering machine pallet 12, it is charged in the upper layer, and the first surge hopper 8 is charged with a blended raw material with a low coke content, and on the sintering machine pallet 12, it is charged in the lower layer. Next, Table 1 shows examples of conveyance using a conventional one-line conveyor line according to a time schedule and a case using this apparatus. According to the results, although there was a slight increase in mixing with this device, there was no difference in the quality of the sintered ore.

[Table] Regarding the present invention, in the examples, 1 series ~
Although the conveyor line has been described as having 2 lines to 1 line, it may be set to 1 line to 2 lines or 1 line to 2 lines depending on the material conveyance distance or the height of the location. As described above, the device of the present invention has a very simple structure, so the construction cost is lower than that of installing two conveyor lines, and it is possible to transfer sintered raw materials with a specific blending ratio according to the conventional time schedule. This is an excellent device that can be transported without much change from the transport method.

[Brief explanation of the drawing]

Figure 1 is a sintering furnace flow diagram, Figure 2 is a separation chute diagram, Figure 3 is a collective chute diagram, Figure 4 is a supply chute diagram, 1-raw material tank, 2, 3, 3', 6, 6'・7-conveyor line, 4/4'-coke supply device,
5/5'-mixer, 8/8'-surge hopper,
9-Separation shoot, 10-Collection shot, 11-
Supply chute, 12-sintering machine pallet, 9a/1
0a/11a - Partition plate.

Claims (1)

[Scope of utility model registration request] This is a sintering raw material conveying device that has only two lines of solid fuel blending and mixing lines, with a bifurcated separation at the end of one series of conveyor lines that supplies raw materials to the solid fuel blending and mixing line. At the output side of the solid fuel blending and mixing line, there is a collection chute in which the blended raw materials coming from the two conveyor lines are placed on one conveyor line, divided into two in the line traveling direction. 1 after the solid fuel blending and mixing line.
A raw material conveyance device using a conveyor line, which has a bifurcated supply chute at the end of the series conveyor line that distributes the blended raw materials placed separately on the conveyor line into separate surge hoppers.