JPS62152550A - Automatic operation control of shaking type rough dividing machine - 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 [Industrial Application Field] The present invention relates to a method for automatically controlling the operation of a swing-type coarse cracker, and more particularly to a method for automatically controlling the progress or stop of supply of block slag.

[Conventional technology] Blast furnace slag, converter slag, electric furnace slag, etc. generated in the iron and steel manufacturing processes are separated into iron by using an oscillating coarse splitter in order to recover the iron content in the furnace slag and utilize the slag. The bulk furnace slag having a high SO content of 60% or more and having dimensions of 300 to 500II11 or more was roughly divided or deformed. (For example, Japanese Patent Application Laid-open No. 147252/1983) By equipping such a swinging type rough splitter with a hydraulic mechanism, f.
In the f1Il or deformation operation, the operation became smoother and it became possible to improve the function. (For example, Japanese Patent Application No. 59-108104) However, depending on the properties and shape of the lumpy furnace slag, even if a normal rocking motion is applied to the rough cracking, the biting in the rough cracking chamber may be insufficient. In some cases, appropriate compressive force may not be applied, and in the case of operation under such rough cracking conditions, the contact position of the lump slag in the rough cracking chamber can be adjusted by expanding or contracting the rough cracking gap in stages. The material was changed to ensure its engagement, and a sufficient compressive force was applied to perform rough splitting, and the material was discharged from the exit of the separation chamber. At this time, the expansion and contraction of the rough cracking gap is changed in stages from the initial setting value of 1710 to 115, so that the lump furnace slag can be continuously processed without stopping the operation of the oscillating rough cracker. It was roughly divided into (
For example, as disclosed in Japanese Patent Application No. 59-2364, as a method of supplying lump furnace slag to a rocking rough splitter, an apron feeder suitable for large lumps, a lifting magnet, etc. were used.

[Problems to be Solved by the Invention] However, in the above-mentioned conventional method for controlling the operation of the rocking type coarse cracker, when continuously supplying the lump furnace slag to the rocking type coarse cracker using an apron feeder, etc. Under rough splitting conditions that vary depending on the shape and properties of the furnace slag, the rough splitting gap of the oscillating rough splitter is adjusted by expanding or decreasing it step by step.
The problem is that the operation cannot be easily controlled, which causes inconveniences, and in particular, during feeding, oscillations may occur due to the shape and properties of any one or more lump slags. When operating the dynamic rough cracking machine by adjusting it to enlarge the rough cracking gap, most of the bulk furnace slag other than those mentioned above will be left in the rough cracking chamber without being subjected to appropriate compressive force. There is a problem in that the slag is discharged from the outlet, making it impossible to obtain high-quality furnace slag with a high iron content and a low slag content.

The present invention solves these conventional problems,
By controlling the supply of the lump slag to the oscillating coarse cracker in accordance with the coarse cracking situation of the lump slag, the lump slag in the rough cracking chamber can be sufficiently chewed with appropriate compression force. The purpose of the present invention is to provide an excellent automatic operation control method for an oscillating rough-splitting machine that can accelerate the rough-splitting operation, improve its rough-splitting operation, and obtain high-quality furnace slag.

[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention supplies the lumpy slag to an oscillating coarse cracker, and adjusts the rough cracking gap by a hydraulic mechanism depending on the rough cracking condition of the lumped slag. In an automatic operation control method for an oscillating rough splitting machine that adjusts by expanding or contracting in steps, the minimum value in a predetermined range of the steps is set as a setting value for a rough splitting gap, and
The coarse cracking gap is detected and compared with the above-mentioned set value to control the progress or stop of the supply of the lumpy slag.

[Function] The present invention has the following effects due to the above configuration. In other words, in order to feed the block slag to the rocking type coarse cracker using an apron feeder or the like, and to perform the rough cracking or deformation operation of the block furnace slag continuously without stopping the operation of the rocking type rough cracker. , the rough cutting situation is confirmed by the hydraulic pressure generated in the hydraulic system of the hydraulic mechanism of the oscillating rough splitting machine, and the rough cutting gap is constantly adjusted in stages between the minimum value and the maximum value within a predetermined range by the hydraulic mechanism. Performs rough splitting or deformation while adjusting by enlarging or contracting. At this time, set the above minimum value as the set value of the rough splitting gap, detect the rough splitting gap of the oscillating type rough splitter and compare it with the above set value, and if there is no difference between the two, continue to cut the apron. The operation of the feeder is continued to progress the supply of the block slag, and if there is a difference, the operation of the apron feeder is stopped to stop the supply of the block slag. therefore,
Under this control operation, the lumpy furnace slag is subjected to appropriate compression force in the coarse cracking chamber, and sufficient biting is promoted, the coarse cracking operation is improved, and it is discharged from the outlet of the coarse cracking chamber, reducing the iron content. It is possible to obtain high-grade furnace slag with high slag content and low slag content.

[Example] Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the invention. In Figure 1,
The rocking coarse cracker 10 is supplied with the lump furnace slag 20 by an apron feeder 30, and the apron feeder 30 has a drive motor 31, which is driven or stopped according to the control of a drive controller 32. It has become.

10 shows the main parts of the swing type rough splitting machine, 1 is a fixed rough splitting plate,
Reference numerals 2 and 2 respectively indicate swinging rough dividing plates, and S indicates a rough dividing gap formed by the fixed rough dividing plate 1 and the swinging rough dividing plate 2. Reference numeral 3 indicates a slide block, and reference numeral 5 indicates a hydraulic cylinder, which are connected to a hydraulic mechanism 4 through a hydraulic system 4a.
b is a pressure gauge for detecting the oil pressure of the hydraulic system 4a. 6
7 is an example of a detection device for detecting the amount of movement of the slide block 3, and its detailed structure is shown in FIG. The output signal 8 of the control circuit 7 controls the operation of the hydraulic mechanism 4, and the output signal 33 controls the operation of the apron feeder 30.

The rough splitting gap S of the oscillating rough splitting machine 10 is determined by the output signal 8 of the control circuit.
By operating the hydraulic mechanism 4, the value can be changed from the MIN value to the MAX value within a predetermined range. At this time, the rough dividing gap S is shown on the open side, and the value on the closed side is smaller by the value of the swing stroke. The change in the rough dividing interval MS from the MIN value to the MAX value due to the movement of the slide block 3 does not change with a continuous value of the movement amount, but with step values.

Next, an explanation will be given of an automatic operation control method for an oscillating coarse splitter using the system configured as described above.

First, it is assumed that the control setting value of the rough cutting gap S of the oscillating rough splitting machine 10 is registered in the control circuit 7, and that the setting value is the MIN value of the rough cutting gap S in the predetermined range of the above-mentioned stage. Oscillating rough splitter 1
The apron feeder 30 supplies the lumped furnace slag to the coarse cracking chamber, where it undergoes rough cracking or deformation, and is discharged from the outlet of the coarse cracking chamber after its first dimension is reduced.

At this time, the hydraulic signal 4C of the hydraulic system 4a detects the load condition and uses it as a variable for the coarse cracking status of the lumpy furnace slag, ensuring that it is caught in the rough cracking chamber and rough cracking under the action of sufficient compressive force. By accurately grasping the fluctuation tendency of the hydraulic signal 4C, the hydraulic mechanism 4 is operated to adjust the rough splitting gap S in the range from the MIN value to the MAX value so that the rough splitting gap S is discharged from the outlet of the rough splitting chamber. Repeat the adjustment to increase or decrease in steps.

At this time, the rough dividing gap S is detected by the position signal 6b of the detection device 6 of the slide block 3, and if the rough dividing gap S is equal to the set value, the output signal 33 of the control circuit 7 is transmitted to the drive controller 32. is input, and the drive motor 31 drives the apron feeder 30 to continue feeding the lump furnace slag. In addition, if the detected coarse gap [5] is not equal to the set value, that is, if the rough gap S is smaller than the set value, then, contrary to the above case, the apron feeder 3
0 is stopped, the supply of the lump slag is stopped, and under this condition, the rough cracking gap S is constantly expanded or contracted in stages in the rough cracking chamber, and the coarse cracking is continued. Depending on the rough splitting of the lumpy slag,
When the rough splitting gap S becomes equal to the set value, the above-mentioned operation is repeated again.

FIG. 2 shows the coarse splitting interval 1 of the oscillating coarse splitting machine 10 in one embodiment of the present invention! ! It shows the relationship between S and step value. In FIG. 2, the step values are 0°1.2, 3.4, 5.・
...As n changes, the coarse interval II! S
changes stepwise from MIN to MAX (direct), and the oscillating rough splitting machine 10 can be operated with a rough splitting interval l5iS corresponding to an arbitrary step value. 1/ of the difference between the MIN value and MAX value of S
The ratio is set at 10-115.

FIG. 3 shows an example of the structure of a detection device for detecting the amount of movement of the slide block 3 of the oscillating coarse splitter 10 in an embodiment of the present invention. In FIG. 3, 6 is a detection device, and 6a is a dock, which is attached to the slide block 3 and moves integrally with the slide block 3. 6b, 6c
are mounting bases for limit switches 6d and 6e, respectively, which are mounted together with the detection device 6 at fixed positions on the swing type rough splitter 10. The limit switches 6d and 6e each have a step value of 0°1, 2, 3, 4, 5. They are attached as a pair at positions M corresponding to -n, and are activated so that the limit switches 6d and 6e are pressed or not pressed by the movement of the tongue 6a. When pressed, it indicates a conductive state, and when it is not pressed, it indicates a non-conductive state. In addition, by mounting them in pairs at positions corresponding to the step value, unstable operation caused by the use of a single limit switch can be prevented, and the detection of the rough cutting gap S and the operation of the hydraulic mechanism 4 can be ensured. It can be done.

In this way, according to the above embodiment, the lump slag is fed to the oscillating coarse cracker using an apron feeder or the like, and the slag can be continuously processed without stopping the operation of the oscillating coarse splitter. Perform rough splitting or deformation operation. At this time, the rough splitting or deformation operation is carried out while adjusting the rough splitting gap by expanding or contracting it step by step using a hydraulic mechanism, and at the same time, the rough splitting gap is detected and compared with the above-mentioned set value, and the block furnace In order to control the progress or stop of the slag supply, the coarse cracking operation of the lump furnace slag in the oscillating rough cracker is improved, and the lump slag is discharged from the outlet of the rough cracking chamber into high iron slag with high iron content and low slag content. Automatic operation control of the oscillating rough splitter can be performed to obtain high-quality furnace slag.

Note that the present invention is not limited to the embodiments described above. That is, it goes without saying that aspects such as the supply of the lump slag, the oscillating rough splitter, the detection device, and the control circuit can be changed as appropriate.

[Effects of the Invention] As is clear from the above embodiments, the present invention uses a relatively simple configuration to stop the operation of the oscillating rough splitter even if there are variations in the shape and properties of the lumpy slag. Rough splitting or deformation can be performed continuously without any trouble. In addition, by detecting the rough cracking gap of the oscillating rough cracker and controlling the progress or stop of the supply of the block slag, sufficient biting of the block slag can be promoted under the appropriate compression force. The rough cracking operation can be improved, producing high-quality furnace slag with high iron content and low slag content, and the functionality of the oscillating rough cracker has been significantly improved, such as increasing its throughput. Its effects are enormous, such as the ability to

[Brief explanation of drawings]

Fig. 1 is an oscillating coarse roughing method according to an embodiment of the present invention. Fig. 2 is an explanatory diagram showing the relationship between the rough cutting gap and step value in the same method, and Fig. 3 is a detailed illustration of the movement amount detection device in the same method. It is a diagram.

Claims (1)

[Claims] An automatic operation control method for an oscillating rough-splitting machine, in which block slag is supplied to the oscillating-type rough-splitting machine, and the rough-splitting gap is adjusted by expanding or contracting in stages using a hydraulic mechanism depending on the rough-splitting condition of the lump slag. In this step, the minimum value in the predetermined range of the step is set as the set value of the rough cracking gap, and the rough cracking gap is detected and compared with the set value to control the progress or stop of the supply of the block slag. Automatic operation control method for a swing-type coarse splitter.