Refractory construction method

Abstract

To provide a refractory construction method which can execute high precision working.SOLUTION: There is provided a refractory construction method in which shaped refractories (101) are stacked in plural tiers in one direction to construct refractories including shaped refractories and unshaped refractories (14) inside a container, and three-dimensional measurement data obtained by measuring the three-dimensional shape in the container are utilized. The refractory construction method may calculate the shape of a gap(s) generated in one tier based on the three-dimensional measurement data. The refractory construction method may execute in-container measurement as the measurement of the three-dimensional shape in the container in at least one of a time before the construction start in the shaped refractories, a time from the construction start to the construction end in the shaped refractories, and a time after the construction end in the shaped refractories.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a method for constructing refractories, including monolithic refractories, in refining vessels such as converters and torpedo cars used in the steelmaking industry in particular. [Background technology]

[0002] Refractories used in molten metal vessels and molten steel vessels can be classified as monolithic refractories and unmonolithic refractories. A typical example of monolithic refractories is firebrick. Firebricks are manufactured by binding refractory aggregate with a binder, filling the resulting mixture into a metal frame, and press-molding. Unfired bricks are produced by volatilizing the organic components in the binder at approximately 200°C after press-molding. Fired bricks are produced by firing the material at temperatures exceeding 1000°C after press-molding. A typical example of an unfired brick is the MgO-C brick used as a wear brick in ladles and converters. Typical examples of fired bricks are magnesia or high-alumina bricks. Since multiple metal press-molding frames are used to produce a single type of brick, the size of the refractory brick varies depending on the size of the frame. Furthermore, the size of each brick varies due to springback after molding and sintering shrinkage during firing. During construction (furnace construction), products that fall within the tolerance range are used. Here, tolerance has the meaning shown in "JIS Z 8103:2000 Measurement Terms."

[0003] Here, equipment that handles high-temperature molten materials, such as converters and ladles, often has a roughly cylindrical shape. The standard refractories installed in these are placed inside the roughly cylindrical vessel, so that the width of the back side is wider than the working side. Furthermore, such standard refractories are installed by stacking them in multiple layers in one direction (for example, the height direction). The tapered shape and the fact that thermal expansion forces during use act in the circumferential direction (depth direction) prevent the standard refractories from slipping out. For example, Patent Document 1 discloses a method of combining two or more types of bricks with different shapes and arranging them so that there are no gaps.

[0004] However, in reality, the shape of the vessel shell may change due to deformation during use or residual beads due to welding repairs. Furthermore, there are also minute differences in the shape of individual standard refractories. Due to deformation of the vessel shell and dimensional tolerances of individual refractories, it is difficult to complete the arrangement with the number of refractories planned in the refractory construction plan. Therefore, the final gaps for each row are measured, and the refractories are processed and filled in the gaps to complete the installation. This type of refractory is sometimes referred to as final adjustment refractory. For example, Patent Document 2 discloses a method of arranging bricks in a spiral pattern up to the furnace top in order to eliminate gaps between rows. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Japanese Patent Application Laid-Open No. 2005-9707 [Patent Document 2] Japanese Patent Application Publication No. 10-204518 Summary of the Invention [Problem to be solved by the invention]

[0006] Here, high availability is required, especially for converters, and a reduction in the time required for refractory construction is required. Furthermore, a reduction in construction time brings about benefits such as reduced labor costs for repairs, a minimization of the number of facilities by improving facility availability, and more flexible operation.

[0007] Spiral refractory construction eliminates the need for final adjustment refractory. However, it requires expensive, specially shaped refractory near the beginning and end of the stack, and if a section of the refractory falls off during operation, the impact will not be limited to the same layer, resulting in the loosening of a wide area of ​​refractory.

[0008] In conventional construction methods, where refractory materials are stacked in multiple layers, it is necessary to measure the final gap. Conventionally, this final gap measurement has been performed manually using a tape measure, ruler, angle ruler, etc., which can result in significant measurement errors depending on the worker's level of skill, or mishearing during communication. As a result, the refractory material must be reprocessed for final adjustment, which can further extend construction time. Furthermore, the aforementioned change in the shape of the container outer shell can cause a mismatch with the surface shape of the standard refractory, resulting in an extended construction time.

[0009] An object of the present disclosure is to provide a method for constructing a refractory material that allows for high-precision processing. [Means for solving the problem]

[0010] (1) A method for constructing a refractory material according to an embodiment of the present disclosure includes: A method for constructing a refractory material, comprising stacking standard refractories in a plurality of stages in one direction to construct a refractory material including the standard refractories and unstandard refractories in a container, Three-dimensional measurement data obtained by measuring the three-dimensional shape inside the container is used.

[0011] (2) As one embodiment of the present disclosure, in (1), Based on the three-dimensional measurement data, the shape of the gap that occurs in one step is calculated.

[0012] (3) As one embodiment of the present disclosure, in (2), An in-vessel measurement, which is a measurement of the three-dimensional shape inside the vessel, is performed at least one of before the start of construction of the standard refractory material, between the start and end of construction of the standard refractory material, and after the end of construction of the standard refractory material.

[0013] (4) As an embodiment of the present disclosure, in (3), The measurement inside the vessel is carried out after the construction of the standard refractory material is completed, The refractory material for final adjustment is processed based on the calculated shape of the gap.

[0014] (5) As an embodiment of the present disclosure, in (3), The measurement inside the vessel is performed from the start of construction of the standard refractory material to the end of construction, The refractory material for final adjustment is processed based on the calculated shape of the gap.

[0015] (6) As an embodiment of the present disclosure, in (3), The measurement inside the vessel is performed before the start of construction of the standard refractory material, The refractory material for final adjustment is processed based on the calculated shape of the gap.

[0016] (7) As an embodiment of the present disclosure, in (3), The measurement inside the vessel is performed before the start of construction of the standard refractory material and during the period from the start of construction of the standard refractory material to the end of construction, processing a refractory for final adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring inside the container before starting construction of the standard refractory; The refractory for final adjustment is processed as a fine adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring inside the container from the start to the end of construction of the standard refractory.

[0017] (8) As an embodiment of the present disclosure, in (3), The measurement inside the vessel is performed from the start of construction of the standard refractory to the end of construction and after construction of the standard refractory is completed, processing a refractory for final adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring inside the container from the start to the end of construction of the standard refractory; The refractory for final adjustment is processed as a fine adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring inside the container after the construction of the standard refractory is completed.

[0018] (9) As an embodiment of the present disclosure, in (3), The measurement inside the vessel is performed before the start of construction of the standard refractory material and after the completion of construction of the standard refractory material, processing a refractory for final adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring inside the container before starting construction of the standard refractory; The refractory for final adjustment is processed as a fine adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring inside the container after the construction of the standard refractory is completed.

[0019] (10) As an embodiment of the present disclosure, in any one of (1) to (9), A refractory material including the standard refractory material and the unspecified refractory material is constructed in the vessel using a robot equipped with a means for constructing the standard refractory material.

[0020] (11) As an embodiment of the present disclosure, in (10), The robot A part or all of a master-slave system consisting of a master robot operated by an operator and a slave robot that performs a predetermined task on a work object, The slave robot is configured to output a reaction force command value in accordance with the reaction force perceived when installing the standard refractory material, and the master robot is configured to generate a reaction force to be perceived by the operator based on the reaction force command value. [Effects of the Invention]

[0021] According to the present disclosure, a method for constructing a refractory material that allows high-precision processing can be provided. [Brief explanation of the drawings]

[0022] [Figure 1] FIG. 1 is a schematic diagram showing a cross section of a refractory material applied to a refining vessel. [Figure 2] FIG. 2 is an enlarged view of a wear brick. [Figure 3] FIG. 3 is a schematic diagram for explaining construction by a refractory construction method according to an embodiment of the present disclosure. [Figure 4]FIG. 4 is a flowchart showing an example of a process of a refractory construction method according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0023] Hereinafter, a method for constructing a refractory material according to an embodiment of the present disclosure will be described with reference to the drawings. In each drawing, identical or corresponding parts are designated by the same reference numerals. In the description of this embodiment, the description of identical or corresponding parts will be omitted or simplified as appropriate.

[0024] FIG. 1 is a diagram schematically showing a cross section of a standard refractory 101 installed in a refining vessel 1. The refining vessel 1 is composed of a steel shell 11 and the standard refractory 101. The standard refractory 101 is installed inside the refining vessel 1 relative to the steel shell 11, stacked in multiple layers in one direction. Hereinafter, one direction in which the standard refractory 101 is stacked is referred to as the height direction. The standard refractory 101 includes permanent bricks 12 and wear bricks 13. The permanent bricks 12 and wear bricks 13 may each be of one type, or may be of multiple types. The permanent bricks 12 and wear bricks 13 are bonded together by a non-monolithic refractory 14. Hereinafter, the direction perpendicular to the height direction, from the inside to the outside of the refining vessel 1, may be referred to as the depth direction. For example, mortar is used as the monolithic refractory 14, but the monolithic refractory 14 is not limited to this and may be a stamp material, kampun, or the like.

[0025] FIG. 2 is an enlarged view of a wear brick 13. The numerical values ​​(unit: mm) shown are examples and are not limited to these values. The left side of FIG. 2 shows the side of the wear brick 13. The right side of FIG. 2 shows the top surface of the wear brick 13. The wider side (162.5 mm in the right side of FIG. 2) is positioned closer to the shell 11 in the depth direction. In other words, the wear brick is tapered so that the side closer to the shell 11 is larger and the side closer to the furnace interior is smaller. Here, the interior of the furnace refers to the inside of a vessel such as a converter, i.e., the inside of the refining vessel 1. Wear bricks 13 generally have a tolerance of about -1% to +1%. In other words, a difference of about -1% to +1% from the design value is generally allowed for wear bricks 13, and there are individual differences in size.

[0026] 1 again, in this embodiment, the standard refractory 101 is installed using a measuring instrument 16. Furthermore, as in this embodiment, a robot 17 may also be used.

[0027] The measuring instrument 16 measures the three-dimensional shape inside the furnace. For example, the position of the weld bead and the size of the protrusion on the shell 11 are measured, and the standard refractory 101 to be applied to that portion is processed based on the surface shape of the shell 11. This eliminates the waiting time for processing the standard refractory 101. The measurement of the three-dimensional shape inside the furnace may include the measurement of the three-dimensional shape of the standard refractory 101 before it is placed. The measurement of the three-dimensional shape inside the furnace is sometimes referred to as in-furnace measurement. The in-furnace measurement is an example of measurement inside the refining vessel 1 (in-vessel measurement). The in-furnace measurement is performed at a set timing, and the shape of the gap (see S in Figure 3) that occurs in one stage is calculated based on the three-dimensional measurement data obtained by the in-furnace measurement, but this will be described in detail later.

[0028] The measuring instrument 16 is realized by an optical or contact type device capable of measuring three-dimensional shapes. One example of the measuring instrument 16 is a laser scanner. Furthermore, the measuring instrument 16 may be configured to include a camera or the like so that when an operator remotely controls the robot 17, the operator can refer to visual information (e.g., images) from the measuring instrument 16 to operate the robot. The measurement method of the measuring instrument 16 can be selected from a stereo method that uses multiple cameras to take pictures, a ToF method that calculates the time it takes for reflected light to return, a structured lighting method that utilizes light interference, and the like.

[0029] The robot 17 is equipped with an application means for the standard refractory 101. The robot 17 is, for example, a robot arm, but is not limited to a robot arm. The application means is not particularly limited, and may be any means that can grasp the standard refractory 101, place the standard refractory 101, apply the unspecified refractory 14 to the standard refractory 101, and apply pressure to the standard refractory 101.

[0030] The robot 17 may be, for example, a six-axis vertical articulated robot. A two-pronged gripping hand or a six-point suction hand may be used as the robot hand (an example of an installation means). When gripping the standard refractory 101, a rubber packing or the like may be used on the fingers to prevent damage to the standard refractory 101. The size of the robot 17 may be selected according to the size of the refining vessel 1 and the weight of the standard refractory 101 to be gripped.

[0031] The robot 17 may be operated by a machine operator using a controller, or may be part or all of a remote control system. For example, the robot 17 may be part or all of a master-slave system consisting of a master robot operated by an operator and a slave robot that performs a predetermined task on a work object. The slave robot may also have a function for sensing a reaction force generated when installing the standardized refractory material 101. The slave robot may output a reaction force command value according to the perceived reaction force, and the master robot may generate a reaction force that the operator senses based on the reaction force command value.

[0032] The robot 17 may be equipped with a control means for controlling the motor by synthesizing the control target values ​​of the position, speed, and force of the standard refractory 101 at any ratio. The control means may be realized by an arithmetic device such as a processor. By controlling the motor in this manner, it is possible to prevent bricks from breaking when being laid. It is also possible to reproduce the delicate movements of a skilled kiln builder. For example, the robot 17 may be equipped with a hammer as part of the laying means. The robot 17 may have a function for finely adjusting the position of a brick by hitting the top and side of the brick with the hammer.

[0033] FIG. 3 is a schematic diagram illustrating construction by a refractory construction method according to this embodiment. Standard refractories 101 are stacked in multiple tiers in one direction (height direction) in a refining vessel 1 to construct the refractory. FIG. 3 shows how wear bricks 13 (one specific example of the standard refractories 101) are arranged in one of these tiers. In construction methods in which refractories are stacked in multiple tiers, the final gap (see S in FIG. 3 ) has traditionally been measured manually using a tape measure or the like. In the refractory construction method according to this embodiment, the shape of the gap that will occur in one tier is calculated based on three-dimensional measurement data obtained by measuring the three-dimensional shape of the furnace interior. Then, final adjustment refractories 15 (so-called cement bricks) are processed based on the calculated gap shape and inserted into the gap after the construction of the standard refractories 101 is completed. Inserting the final adjustment refractories 15 fills the gap and prevents the standard refractories 101 from loosening in the circumferential direction. In the refractory construction method according to this embodiment, the refractory for final adjustment 15 is processed based on the three-dimensional measurement data measured by the measuring instrument 16, so measurement errors are unlikely to occur and processing with high precision is possible. Furthermore, there is no need to reprocess the refractory for final adjustment 15 due to measurement errors or mishearing during transmission, so construction time can be shortened.

[0034] Here, the in-furnace measurement is performed at least one of before the start of construction of the standard refractory 101, during the period from the start of construction of the standard refractory 101 to the end of construction, and after the end of construction of the standard refractory 101. The start of construction of the standard refractory 101 refers to the placement of the first standard refractory 101 in one tier. The end of construction of the standard refractory 101 refers to the placement of all standard refractories 101 in one tier, and a state in which the placement of the final adjustment refractory 15 is awaited. In the refractory construction method according to this embodiment, the calculation of the shape of the gaps may be delayed until the completion of construction of the standard refractory 101, or may be calculated based on three-dimensional measurement data measured before that. Accelerating the calculation of the shape of the gaps allows the processing of the final adjustment refractory 15 to begin earlier, thereby enhancing the effect of shortening the construction time. In calculating the shape of the gap, a design value for the size of the standard refractory 101 before installation (before placement) may be used, or an actual measurement value of each standard refractory 101 obtained by in-furnace measurement may be used when the standard refractory 101 has been carried into the furnace. Furthermore, as shown by P in FIG. 3 , if the placement of the standard refractory 101 is shifted due to deformation of the steel shell 11, etc., this affects the shape of the gap. Such deformation can be grasped by in-furnace measurement and reflected in the calculation of the shape of the gap. Furthermore, in-furnace measurement may be performed multiple times. In this case, the processed refractory for final adjustment 15 may be processed again as a fine adjustment so as to fit the shape of the gap calculated based on the 3D measurement data from the second or subsequent measurements. Here, the acquisition and calculation of data related to the installation of the standard refractory 101 may be performed, for example, by a computer capable of communicating with the measuring instrument 16 or by a control means of the robot 17. When performed by a computer, the calculation results may be output to the robot 17 or shown to the operator of the robot 17 or the person processing the refractory for final adjustment 15.

[0035] 4 is a flowchart showing the processing of the refractory construction method according to this embodiment. In this embodiment, acquisition of data and calculations related to the construction of the standardized refractory 101 are executed by a computer that manages the equipment used in the construction.

[0036] First, settings related to the construction of the standard refractory 101, including the timing at which in-furnace measurements are performed, are made (step S1). The settings may be performed, for example, by an operator instructing a computer using an input means (for example, a keyboard or a mouse). In addition, when construction is automated, the settings may be performed by the computer reading a file containing settings.

[0037] If the in-furnace measurement does not need to be performed before the start of construction of the standard refractory 101 (No in step S2), the process proceeds to step S6. If the in-furnace measurement is set to be performed before the start of construction of the standard refractory 101 (Yes in step S2), the three-dimensional shape of the inside of the furnace is measured by the measuring instrument 16 (step S3). The computer calculates the shape of the gap that will occur in one layer based on the three-dimensional measurement data (step S4). The final adjustment refractory 15 is processed to fit the calculated gap (step S5).

[0038] The construction of the standard refractory 101 starts (step S6). In this embodiment, the construction is carried out using the robot 17.

[0039] If the in-furnace measurement does not need to be performed between the start and end of the construction of the standard refractory 101 (No in step S7), the process proceeds to step S11. If the in-furnace measurement is set to be performed between the start and end of the construction of the standard refractory 101 (Yes in step S7), the measuring instrument 16 measures the three-dimensional shape of the inside of the furnace (step S8). The computer calculates the shape of the gap that will occur in one layer based on the three-dimensional measurement data (step S9). The refractory 15 for final adjustment is processed to fit the calculated gap (step S10). Here, if the refractory 15 for final adjustment has already been processed, step S10 may be reprocessing as a fine adjustment.

[0040] Thereafter, the construction of the standard refractories 101 is completed (step S11). That is, in one stage, the standard refractories 101, except for the final adjustment refractories 15, are in a constructed state.

[0041] If the in-furnace measurement does not need to be performed after the construction of the standard refractory 101 is completed (No in step S12), the process proceeds to step S16. If the in-furnace measurement is set to be performed after the construction of the standard refractory 101 is completed (Yes in step S12), the three-dimensional shape of the inside of the furnace is measured by the measuring instrument 16 (step S13). The computer calculates the shape of the gap that will occur in one layer based on the three-dimensional measurement data (step S14). The refractory 15 for final adjustment is processed to fit the calculated gap (step S15). Here, if the refractory 15 for final adjustment has already been processed, step S15 may be reprocessing as a fine adjustment.

[0042] Then, the final adjustment refractory 15 is placed in the gap (step S16). Such a series of processes is carried out in each stage.

[0043] Hereinafter, several combinations of branches in the flowchart of FIG. 4 (that is, Yes or No in steps S2, S7, and S12) will be described as examples, but the present disclosure is not limited to these examples.

[0044] Reference example In the method, in-furnace measurement is performed after the completion of the construction of the standard refractories 101, and the refractories for final adjustment 15 are processed based on the calculated shape of the gap. The completion of the construction of the standard refractories 101 means, as described above, that all the standard refractories 101 are arranged in one stage and the stage is ready for the placement of the refractories for final adjustment 15. Therefore, the measuring instrument 16 can measure the gap that will eventually occur more accurately. Unlike conventional methods, this method does not rely on the skill of the measurer, and allows for highly accurate measurement in a short time. Therefore, the processing accuracy of the refractories for final adjustment 15 is improved, and additional time required for reprocessing can be avoided.

[0045] Example 1In this example, in-furnace measurements are performed from the start to the end of construction of the standard refractories 101, and the final adjustment refractories 15 are processed based on the calculated gap shape. As described above, the start of construction of the standard refractories 101 means that the first standard refractory 101 is placed in one stage. A predicted gap shape is calculated without waiting for the gap that will ultimately occur. The accuracy of the calculated gap shape is Reference example Although this is not as early as in the case of (1), it is possible to start processing the refractory material 15 for final adjustment earlier. In other words, it is possible to further shorten the construction time. The closer the in-furnace measurement is performed to the end of construction, the higher the accuracy of estimating the shape of the gap. On the other hand, the closer the in-furnace measurement is performed to the start of construction, the greater the effect of shortening the construction time. Therefore, the timing for performing the in-furnace measurement may be determined depending on the degree of reduction in the required construction time.

[0046] Example 2 In the method, in-furnace measurement is performed before the start of construction of the standard refractory 101, and the refractory for final adjustment 15 is processed based on the calculated shape of the gap. Although the accuracy of the calculated shape of the gap decreases, the start of processing of the refractory for final adjustment 15 can be further accelerated. In other words, it is possible to significantly shorten the construction time.

[0047] Example 3 In the method, in-furnace measurements are performed before the start of construction of the standard refractory 101 and during the period from the start of construction to the end of construction of the standard refractory 101. The refractory for final adjustment 15 is fabricated based on the shape of the gap based on 3D measurement data obtained by in-furnace measurements before the start of construction of the standard refractory 101. Then, the refractory for final adjustment 15 is fabricated as fine adjustment based on the shape of the gap based on 3D measurement data obtained by in-furnace measurements during the period from the start of construction of the standard refractory 101 to the end of construction. By fine-tuning the refractory for final adjustment 15 after obtaining an estimated gap shape with higher accuracy, the accuracy of fabricating the refractory for final adjustment 15 can be further improved. Furthermore, the start of fabrication of the refractory for final adjustment 15 can be accelerated, thereby shortening the construction time.

[0048] Example 4In the method, in-furnace measurements are performed from the start to the end of construction of the standard refractory 101 and after construction of the standard refractory 101 is completed. The refractory for final adjustment 15 is processed based on the shape of the gap based on three-dimensional measurement data obtained by in-furnace measurements from the start to the end of construction of the standard refractory 101. Then, the refractory for final adjustment 15 is processed as fine adjustment based on the shape of the gap based on three-dimensional measurement data obtained by in-furnace measurements after construction of the standard refractory 101 is completed. By fine-tuning the refractory for final adjustment 15 after obtaining an estimated gap shape with higher accuracy, the precision of processing the refractory for final adjustment 15 can be further improved.

[0049] Example 5 In the method, in-furnace measurements are performed before the start of construction of the standard refractory 101 and after the completion of construction of the standard refractory 101. The refractory for final adjustment 15 is processed based on the shape of the gap based on three-dimensional measurement data obtained by the in-furnace measurement before the start of construction of the standard refractory 101. Then, the refractory for final adjustment 15 is processed as fine adjustment based on the shape of the gap based on three-dimensional measurement data obtained by the in-furnace measurement after the completion of construction of the standard refractory 101. By fine-tuning the refractory for final adjustment 15 after obtaining an estimated gap shape with higher accuracy, the precision of processing the refractory for final adjustment 15 can be further improved.

[0050] As described above, the refractory construction method according to this embodiment uses three-dimensional measurement data obtained by measuring the three-dimensional shape inside the furnace, and therefore is less susceptible to errors compared to conventional methods that use one-dimensional measurement data obtained manually using a ruler, angle ruler, tape measure, etc. Therefore, the refractory for final adjustment 15 can be fabricated with high precision.

[0051] Furthermore, the refractory construction method according to this embodiment is suitable for automation, such as continuous automatic construction using a robot 17. Conventional methods require workers to enter the furnace to manually measure gaps inside the furnace. In the refractory construction method according to this embodiment, three-dimensional shape data can be automatically measured using a measuring instrument 16. Furthermore, automation can reduce construction time. Furthermore, since workers do not need to enter or exit the furnace, work space and movement space are not required, and the flexibility of equipment layout is improved.

[0052] Furthermore, as described above, the robot 17 may be part or all of a master-slave system consisting of a master robot operated by an operator and a slave robot that performs a predetermined task on a work object, and may be configured so that the operator can sense a reaction force. Because force information is transmitted in both directions, the operator can perform work remotely with the same amount of force as if he or she were working inside the furnace as a bricklayer.

[0053] In addition, in the refractory construction method according to the present embodiment, the place where the processing of the refractory for final adjustment 15 is carried out is not limited, but processing equipment for the refractory for final adjustment 15 capable of cutting, grinding, etc. may be provided inside the furnace. In this case, there is no waiting time for processing, and it is not necessary to carry in the refractory for final adjustment 15 after processing, which enhances the effect of shortening the construction time.

[0054] Although the embodiments according to the present disclosure have been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various modifications or alterations based on the present disclosure, and therefore, it should be noted that these modifications and alterations are included within the scope of the present disclosure. [Explanation of symbols]

[0055] 1. Refining vessel 11 Ironhide 12 Permanent brick 13 Wear brick 14 Monolithic refractories 15 Refractories for final adjustment 16 Measuring Instruments 17. Robot 101 Standard refractories

Claims

1. A method for constructing a refractory material, comprising stacking standard refractories in a plurality of stages in one direction to construct a refractory material including the standard refractories and unstandard refractories in a container, performing an in-vessel measurement, which is a measurement of a three-dimensional shape inside the vessel, at least one of before the start of construction of the standard refractory, during the period from the start of construction of the standard refractory to the end of construction, and after the end of construction of the standard refractory; calculating a shape of a gap occurring in one step based on three-dimensional measurement data obtained by measuring a three-dimensional shape inside the container; The measurement inside the vessel is performed from the start of construction of the standard refractory material to the end of construction, A refractory construction method, comprising processing a refractory for final adjustment based on the calculated shape of the gap.

2. A method for constructing a refractory material, comprising stacking standard refractories in a plurality of stages in one direction to construct a refractory material including the standard refractories and unstandard refractories in a container, performing an in-vessel measurement, which is a measurement of a three-dimensional shape inside the vessel, at least one of before the start of construction of the standard refractory, during the period from the start of construction of the standard refractory to the end of construction, and after the end of construction of the standard refractory; calculating a shape of a gap occurring in one step based on three-dimensional measurement data obtained by measuring a three-dimensional shape inside the container; The measurement inside the vessel is performed before the start of construction of the standard refractory material, A refractory construction method, comprising processing a refractory for final adjustment based on the calculated shape of the gap.

3. A method for constructing a refractory material, comprising stacking standard refractories in a plurality of stages in one direction to construct a refractory material including the standard refractories and unstandard refractories in a container, performing an in-vessel measurement, which is a measurement of a three-dimensional shape inside the vessel, at least one of before the start of construction of the standard refractory, during the period from the start of construction of the standard refractory to the end of construction, and after the end of construction of the standard refractory; calculating a shape of a gap occurring in one step based on three-dimensional measurement data obtained by measuring a three-dimensional shape inside the container; The measurement inside the vessel is performed before the start of construction of the standard refractory material and during the period from the start of construction of the standard refractory material to the end of construction, processing a refractory for final adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring the inside of the container before starting construction of the standardized refractory; A refractory construction method in which the final adjustment refractory is processed as a fine adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring inside the container from the start to the end of construction of the standard refractory.

4. A method for constructing a refractory material, comprising stacking standard refractories in a plurality of stages in one direction to construct a refractory material including the standard refractories and unstandard refractories in a container, performing an in-vessel measurement, which is a measurement of a three-dimensional shape inside the vessel, at least one of before the start of construction of the standard refractory, during the period from the start of construction of the standard refractory to the end of construction, and after the end of construction of the standard refractory; calculating a shape of a gap occurring in one step based on three-dimensional measurement data obtained by measuring a three-dimensional shape inside the container; The measurement inside the vessel is performed from the start of construction of the standard refractory to the end of construction and after construction of the standard refractory is completed, processing a refractory for final adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring the inside of the container from the start to the end of construction of the standard refractory; A refractory construction method in which the final adjustment refractory is processed as a fine adjustment based on the shape of the gap obtained from the three-dimensional measurement data obtained by measuring inside the container after the construction of the standard refractory is completed.

5. A method for constructing a refractory material, comprising stacking standard refractories in a plurality of stages in one direction to construct a refractory material including the standard refractories and unstandard refractories in a container, performing an in-vessel measurement, which is a measurement of a three-dimensional shape inside the vessel, at least one of before the start of construction of the standard refractory, during the period from the start of construction of the standard refractory to the end of construction, and after the end of construction of the standard refractory; calculating a shape of a gap occurring in one step based on three-dimensional measurement data obtained by measuring a three-dimensional shape inside the container; The measurement inside the vessel is performed before the start of construction of the standard refractory material and after the completion of construction of the standard refractory material, processing a refractory for final adjustment based on the shape of the gap based on the three-dimensional measurement data obtained by measuring the inside of the container before starting construction of the standardized refractory; A refractory construction method in which the final adjustment refractory is processed as a fine adjustment based on the shape of the gap obtained from the three-dimensional measurement data obtained by measuring inside the container after the construction of the standard refractory is completed.

6. 6. A method for constructing a refractory material according to claim 1, wherein a refractory material including the standard refractory material and the unstandard refractory material is constructed in the container using a robot equipped with a construction means for the standard refractory material.

7. The robot, A part or all of a master-slave system consisting of a master robot operated by an operator and a slave robot that performs a predetermined task on a work object, A refractory construction method as described in claim 6, configured so that the slave robot outputs a reaction force command value in accordance with the reaction force perceived when constructing the standard refractory material, and the master robot generates a reaction force to be perceived by the operator based on the reaction force command value.

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