KR20010057415A - Apparatus for measuring the wear speed of refractory - Google Patents

Abstract

PURPOSE: An apparatus for measuring corrosion speed of refractories is provided to measure the difference in thickness before and after the corrosion, corrosion speed according to time, and a temperature section where the refractory is much corroded. CONSTITUTION: An apparatus for measuring corrosion speed of refractories includes a heating part(10) assembling thermal insulation bodies(13) each having a heating body(12) generating heat in multiple, a hollow cylindrical inner pipe(14) inserted into the inner space of the thermal insulation bodies, and a temperature meter(16) measuring the temperature of the inner space for heating the corrosion material to a target temperature; a corrosion material conveying part(20) having a lower moving bracket(22) ascended and descended by a lower conveying apparatus(29), a stand(23) formed on the upper surface of the lower moving bracket with a regular height, conveying a crucible(24) containing corrosion material to the inner pipe; a test piece conveying part(30) having an upper moving bracket(32) having an upper moving bracket(32) ascended and descended by an upper conveying apparatus, a torque measuring instrument(36) mounting a refractory test piece at the end part of a rotary shaft for depositing the refractory test piece in the crucible; and a measuring part measuring, displaying, and consecutively storing torque and viscosity generated between the refractory test piece and the corrosion material.

Description

Refractory Erosion Speed Measuring Device {APPARATUS FOR MEASURING THE WEAR SPEED OF REFRACTORY}

The present invention relates to a device for measuring the erosion rate of the refractory, and more particularly to a refractory erosion rate measuring apparatus capable of measuring the erosion rate of the refractory material used in contact with the hot melt continuously.

In general, the conditions in which the refractory material and the hot melt contact each other are generated in steelmaking, steelmaking, cement manufacturing, or glass processing. As such, refractory with high erosion resistance is indispensable in these processes.

Therefore, it is essential to measure the erosion rate of the refractory material under each process condition in order to select an appropriate refractory for each process.In the commercialized process, the erosion rate of the refractory material, which is a refractory material, proceeds at a high temperature of 1500 ° C. or higher, thus increasing the speed of erosion. Measuring is not possible with current methods.

The conventional method of measuring the refractory erosion rate was a rotary erosion method, which is made of a refractory material, mounted in a container in the erosion apparatus, and heating the specimen for erosion of the refractory material while heating slag powder and iron ingots. To rotate the heating vessel.

However, when the conventional method is used, the erosion degree can be compared using the difference in specimen thickness before and after erosion. However, it is impossible to measure the erosion rate over time or the temperature section where the refractory is eroded most. .

On the other hand, in the induction furnace erosion method, the specimen was mounted in a fixed state without rotating the container on which the specimen was mounted, and the erosion state of the refractory was measured by injecting a substance capable of generating an induction current. Although the erosion degree can be compared by using, it is not possible to measure the erosion rate of the refractory or the temperature range where the refractory is eroded most.

Accordingly, the present invention has been made to solve the above problems, the object of which is to continuously measure the erosion rate of the refractory over time, the refractory erosion that can measure the temperature section where the refractory is most eroded To provide a speed measuring device.

1 is a front view showing a refractory erosion rate measuring apparatus according to the present invention,

Figure 2 is a side view showing a refractory erosion rate measuring apparatus according to the present invention,

Figure 3 is a longitudinal sectional view showing a refractory erosion rate measuring apparatus according to the present invention,

4 is an assembly view showing the crucible and the refractory test piece employed in the refractory erosion rate measuring apparatus according to the present invention,

Figure 5 is a schematic diagram showing the upper and lower transfer devices employed in the refractory erosion rate measuring apparatus according to the present invention.

* Explanation of symbols for the main parts of the drawings *

11 ..... Body 12 ..... Heating Element

13 ..... insulation 14 ..... inner tube

15a, 15b ... upper and lower airtight 16 ..... thermometer

19 ..... Cover member 21,31 ... Upper and lower guide rod

22,32 ... upper and lower movable bracket 24 ..... crucible

33 ..... axis of rotation 35 ..... refractory specimens

35b ..... pin members 29,39 ... upper and lower feed units

The present invention as a technical configuration for achieving the above object,

In the apparatus for measuring the erosion rate of the refractory,

The upper space of the main body is a multi-assembly having a heat insulator having a heating element that generates a heat source when the external power supply, and equipped with a hollow tube-type inner tube that is inserted through the inner space of the insulator, the thermometer measuring the temperature of the inner space Heating unit for heating the eroded material to the target temperature;

The lower space of the main body has a lower movable bracket which is assembled to the lower guide rod so as to move up and down by a lower transfer device, and has a pedestal having a predetermined height on the upper surface of the lower movable bracket and placed on the pedestal. An erosion material transporting unit for transferring the crucible containing the erosion material to the inner tube;

The refractory body is mounted on the main body so as to be movable on the upper guide rod, and has an upper moving bracket which is lifted up and down by an upper transfer device. The upper moving bracket has a torque measuring instrument equipped with a refractory specimen at a rotating shaft end having a predetermined length. A specimen transfer part for depositing the specimen in the crucible;

By providing a refractory erosion rate measuring device comprising a; measuring unit for measuring, displaying, and continuously storing the torque and viscosity generated between the refractory specimen and the erosion material.

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

1 is a front view showing a refractory erosion rate measuring apparatus according to the present invention, Figure 2 is a side view showing a refractory erosion rate measuring apparatus according to the present invention, Figure 3 shows a refractory erosion rate measuring apparatus according to the present invention. As a longitudinal cross-sectional view, the device 1 of the present invention can accurately measure the erosion rate of the refractory, and the device 1 includes a heating part 10, an erosion material conveying part 20, and a specimen conveying part 30. And a measuring unit 40.

That is, the heating unit 10 is movable with a plurality of moving wheels 7, and the effect of the heating atmosphere on the erosion rate in the upper space (P1) of the main body 11 consisting of a plurality of frames (9) Equipped with a sealed type to measure the bar, the upper space (P1) is composed of a plurality of heat insulators (13) are inserted into the inner space (P3) is a heating element 12 that generates a heat source when the external power supply.

In addition, the central portion of the heat insulator 13 is provided with a hollow-cylindrical cylindrical inner tube 14 inserted through the inner space P3, and the temperature of the inner space P3 heated to a high temperature by the heating element 12. By equipping the thermometer 16 to measure, it is possible to heat the eroded material to the target temperature, and to control the heating atmosphere temperature of the interior space (P3) made of a closed type.

Here, the upper and lower sealing openings (15a) and (15b) formed on the outer surface of the cooling water supply (17a) and the discharge line (17b), respectively, which is supplied to the upper and lower ends of the inner tube (14) and discharged to the outside. Are respectively mounted, and the lower airtight seal 15a having the gas inlet 18a is sealed by a lower transfer bracket 22 to be described later, and the upper airtight seal 15b passes through the inner tube 14. It is sealed by the cover member 19 which has the gas discharge port 18b which gas is discharged, and can make the atmosphere inside the said inner pipe 14 into the hermetic type.

In addition, the erosion material transport unit 20 for transporting the erosion material to the inner tube 14 is a shangdongdong to a pair of lower guide rods 21 installed perpendicular to the lower space (P2) of the main body (11) Equipped with a lower movable bracket 22 to be assembled as possible, the lower movable bracket 22 is raised and lowered by the driving force of the lower conveying device 29, in contact with the lower surface of the lower sealing (15a) An upper surface of the lower movable bracket 22 sealing the lower end of the inner tube 14 is equipped with a pedestal 23 having a predetermined height inserted into the inner tube 14, and on the pedestal 23 an erosion material. This contained crucible 24 is put up.

In addition, the specimen transfer part 30 for depositing the refractory specimen 35 into the erosion material of the crucible 24 raised into the inner tube 14 is provided with a pair of upper guide rods perpendicular to the upper part of the main body 11. An upper movable bracket 32 is mounted to the upper movable bracket 32 so as to be movable in Shanghai, and a rotating shaft having a predetermined length to be inserted into the inner tube 14 in the upper movable bracket 32 which is lifted up and down precisely by the upper transfer device. (33) A refractory specimen 35 is mounted at the end, and a torque measuring device 36 capable of rotating the rotary shaft 33 in one direction is provided.

Here, the refractory specimen 35 and the rotary shaft 33 is connected to the end of the rotary shaft 33 is inserted into the central hole 35a of the refractory specimen 35, as shown in FIG. The pin member 35b is inserted into the connection hole 33a of the rotating shaft inserted into the central hole 35a, and is connected to each other.

In addition, the connection portion 33b of the rotary shaft 33 connecting the refractory specimen 35 may be made of platinum so that it may not be eroded by high temperature erosion material and may be reused by pickling after the test. In addition, the pin member 35b is preferably composed of a platinum material to prevent deformation and breakage of the refractory specimen 35 due to thermal expansion coefficient difference, the inner tube 14, the rotating shaft 33 is the oxide It is composed of a coating of uninium material.

At this time, the rotating shaft 33 is a through-hole of the cover member 19 into which the rotating shaft 33 is inserted from the inner tube 14 when the refractory specimen 35 is completely deposited on the erosion material of the crucible 24. It is equipped with a rod member whose outer diameter gradually increases toward the bottom so that the outer shaft diameter is in close contact with the through hole 19a so that there is no heat leakage through the 19a.

In addition, the measurement unit 40 includes a measurement device 37 and a storage device to measure, display, and continuously store the torque and viscosity generated between the refractory specimen 35 and the eroded material.

On the other hand, the upper and lower transfer brackets 22 and 32, the upper and lower transfer devices 29 and 39 are provided with the same structure in the lower space and the upper portion of the main body 11, respectively, so as to move up and down are shown in FIG. As shown in the figure, screw rotation shafts 29a, which are assembled with respective transfer screws 29b and 39b of the upper and lower movable brackets 22 and 32, and bearing members 29c and 39c are assembled at both ends, respectively. (39b) and drive motors (29e, 39e) connected through the rotational force transmission members (29d, 39d) so as to rotate the screw rotation shaft (29a, 39a) in the forward and reverse directions, respectively, The crucible 24 and the refractory specimen 35 are respectively inserted into the inner tube 14 so that the refractory specimen 35 can be contained in the erosion material of the crucible 24. You can raise and lower each.

Here, the upper and lower conveying devices (29) and (39) are upper and lower movable brackets (22) and (32), which are assembled on the upper and lower guide rods (21) and (31), respectively, so as to move upward and downward. It can be configured by replacing the upper and lower cylinder member (not shown) to be assembled and lifted.

In addition, each side of the upper and lower brackets (22, 32) at the time of the touch contact signal generation so as to precisely control the position of the crucible 24, the refractory specimen 35 is inserted into the inner tube (14) A pair of upper and lower limit switches 28a, 28b, 38a and 38b for stopping the driving of the lower feeder 29 and 39 are respectively provided.

The operation and effects of the present invention having the above-described configuration will be described.

First, the erosion material is contained in the crucible 24 mounted on the support 23 of the lower movable bracket 22 in the lower space P2 of the main body 11, and then When the driving motor 29e is rotated in the forward direction, the lower movable bracket 22 assembled with the screw rotation shaft 29a that is rotated in the forward direction is lifted to the upper portion.

The crucible 24 on the pedestal 23 enters the inner tube 14 by the upward movement of the lower movable bracket 22, and the lower movable bracket 22 is in contact with the contact signal of one upper limit switch 28a. When stopped by the lower seal 15a mounted on the lower end of the inner tube 14 is in close contact with the upper surface of the lower movable bracket 22, the upper end of the inner tube 14 is the cover member 19 By closing the crucible 14, the inside of the inner tube 14, which is raised and positioned, becomes a sealed atmosphere.

Subsequently, when the upper transfer bracket 32 installed on the upper portion of the main body 11 is lowered by the upper transfer device 39, the rotation shaft 33 of the torque measuring device 36 mounted on the lower upper transfer bracket 32 is lowered. ) Also begins to descend into the inner tube (14) through the through hole (19a) of the cover member 19, and when the lower upper transfer bracket 32 is detected by one lower limit switch 38b and stopped, At the same time as the upper moving bracket 32 is stopped, the refractory specimen 35 connected to the lower end of the rotating shaft 33 of the torque measuring device 36 by the pin member 35b is contained in the erosion material in the crucible 24.

In this state, when an external power source is applied to the heating element 12 assembled in the heat insulator 13 to provide a heat source to the internal space P3 of the heat insulator 13, the crucible ( Erosion material contained in the 24 and the refractory specimen 35 can be heated to rise to the desired temperature, the heating temperature is often detected by the thermometer (16).

In addition, by heating the refractory specimen 35 and the erosion material using the heating element 12 and rotating the rotating shaft 33 at a constant speed to rotate the refractory specimen 35 contained in the erosion material, the erosion material and refractory The torque generated between the specimens 35 is measured, the viscosity of the eroded material is measured as the measuring device 37, the measured value is displayed, and the value is stored in the storage device.

On the other hand, in order to obtain a relationship that can know the degree of erosion of the refractory specimen, first prepared a fluid having a viscosity similar to the hot erosion material at room temperature, and manufactured a cylindrical refractory specimen having a variety of diameters and lengths immersed in the fluid and torque Torque is measured using a measuring instrument while rotating at a constant speed.

In this case, the relation that the torque and the diameter of the outer specimen are inferior can be obtained based on the fact that the larger diameter and length of the specimen have a larger torque measured than the smaller diameter and length of the specimen. At this time, since the operation is performed at room temperature, a relation between torque and diameter can be easily obtained.

And, by measuring the torque at the refractory specimen rotation from the above relation, it is possible to easily outflow of the diameter at the time of erosion.

That is, when the refractory specimen 35 is deposited on a hot erosion material in a high temperature atmosphere in the inner tube of the apparatus 1 as described above, and the torque is measured while rotating the refractory specimen 35 at a constant speed, The diameter and length of the specimen (which can be converted into the volume of the specimen) can be known, and from this, the amount of refractory specimen lost by erosion can be known.

Accordingly, if the torque is continuously specified with time during the erosion test, the erosion rate of the refractory can be known.

According to the present invention as described above, because the erosion rate of the refractory material proceeds at a high temperature can be easily measured, not only the difference in thickness before and after erosion, but also the erosion rate with temperature and the temperature section where the refractory is eroded the most. The effect of producing a refractory having high erosion resistance is obtained.

Claims (5)

In the apparatus for measuring the erosion rate of the refractory, In the upper space P1 of the main body 11, a plurality of heat insulators 13 having a heating element 12 that generates a heat source when an external power supply is assembled, and penetrates into the inner space P3 of the heat insulator 13. A heating unit 10 having a hollow cylindrical tube inner tube 14 inserted therein and having a thermometer 16 measuring a temperature of the inner space P3 to heat the eroded material to a target temperature; The lower space P2 of the main body 11 has a lower movable bracket 23 which is assembled to the lower guide rod 21 so as to be movable and lowered by a lower transfer device 29, and the lower movable bracket ( Equipped with a pedestal 23 having a predetermined height on the upper surface of the 23) is mounted on the pedestal 23, the erosion material conveying portion 20 for transferring the crucible 24 containing the erosion material to the inner tube (14) ; On the main body 11 is provided with an upper movable bracket 32 which is assembled to the upper guide rod 31 so as to be movable up and down by the upper transfer device 39, and the upper movable bracket 32 has a predetermined length. A specimen conveying part (30) having a torque measuring device (36) having a refractory specimen (35) mounted at an end of a rotating shaft (33) having the refractory specimen (35) in a crucible (24); Refractory erosion rate measuring apparatus comprising a; measuring unit 40 for measuring, displaying, and continuously storing the torque and viscosity generated between the refractory specimen 35 and the erosion material. The method of claim 1, Upper and lower airtight openings 15a and 15b respectively formed on the outer surface of the upper and lower ends of the inner tube 14 are provided with coolant supply 17a and discharge line 17b respectively discharged to the outside. Each of the lower airtight openings 15a having the gas inlets 18a are respectively sealed by the lower movable bracket 22, and the upper airtight openings 15b are gas outlets through which the gas passing through the inner pipe is discharged. A refractory erosion rate measuring apparatus characterized by being sealed by a cover member (19) having a (18b) to configure the atmosphere inside the inner tube (14) in a closed type. The method of claim 1, The refractory specimen 35 and the rotating shaft 33 form a connection hole 33a at the end of the rotating shaft 33 which is inserted into the central hole 35a of the refractory specimen 35 and inserted into the central hole 35a. Refractory erosion rate measuring apparatus, characterized in that the pin member (35b) is inserted into the connection hole (33a) of the rotating shaft is connected to each other. The method of claim 1, The connecting portion 33b of the rotating shaft 33 connecting the refractory specimen 35 is not only eroded by a high temperature erosion material but also made of platinum so as to be reused by pickling after the test. 35b) is a refractory erosion rate measuring apparatus, characterized in that composed of platinum material to prevent deformation and breakage of the refractory specimen (35) by thermal expansion coefficient difference. The method of claim 1, Each side of the upper and lower brackets 22 and 32 transfers the upper and lower parts when a touch contact signal is generated so as to precisely control the position of the crucible 24 and the refractory specimen 35 inserted into the inner tube 14. A refractory erosion rate measuring device, characterized in that a pair of upper and lower limit switches (28a) (28b) (38a) (38b) for stopping the operation of the device (29) (39) is provided respectively.