Furnace profile correction method and device after blast furnace lining manufacturing

Abstract

The invention belongs to the technical field of blast furnaces, and relates to a furnace profile correction method and device after blast furnace lining manufacturing, and the method comprises the following steps: obtaining blast furnace burden parameters; calculating the total batch number according to the blast furnace burden parameters; and distributing the blast furnace according to the total batch number of materials. According to the method and device for correcting the furnace profile after blast furnace lining making, conditions beneficial to filling of grouting materials and covering of a damaged surface are formed at the lining making position, and the integrity and strength of lining making are improved.

Description

Technical Field

[0001] The invention relates to the technical field of blast furnaces, and in particular to a method and a device for correcting the furnace shape of a blast furnace after lining. Background Art

[0002] After the blast furnace enters the middle and late stages of its service life, the walls of the furnace belly, furnace waist or under the furnace body that come into contact with the soft-melting material will suffer severe circumferential wear due to the frequent conversion of dry and wet charge, and the protective slag skin will easily fall off. When the wear reaches its limit, large areas of the circumferential walls at the above locations will be burned. At this time, grouting and lining of the areas where charge is missing are required to ensure the safety of the blast furnace. However, in the actual lining process, the slurry tends to gather in the loose areas of charge, resulting in thicker lining areas, making the blast furnace shape irregular, affecting its smooth operation and index optimization, and therefore needs improvement. Summary of the invention

[0003] In view of this, the present invention provides a method and device for correcting the furnace shape after lining of a blast furnace.

[0004] Specifically, the present invention is achieved through the following technical solutions:

[0005] According to a first aspect of the present invention, a method for correcting the shape of a blast furnace after lining is provided, the method comprising the steps of:

[0006] Get blast furnace charge parameters;

[0007] Calculate the total batch number of materials according to the blast furnace charge parameters;

[0008] The blast furnace is charged according to the total batch number of materials.

[0009] Optionally, the obtaining of blast furnace charge parameters comprises the steps of:

[0010] Get the batch number of blast furnace charge;

[0011] Obtain the volume of the first charge corresponding to the uppermost portion of the damaged part of the blast furnace;

[0012] Obtain the volume of the second charge corresponding to the lowest part of the damaged part of the blast furnace;

[0013] Obtain the volume of iron ore and coke in each batch of charge.

[0014] Optionally, the calculating the total number of batches of materials according to the blast furnace charge parameters comprises the steps of:

[0015] Obtaining a first charge volume, a second charge volume, an iron ore volume, and a coke volume from the blast furnace charge parameters;

[0016] Calculating the number of first batches of material required to cover the uppermost portion of the damaged portion of the blast furnace according to the first charge volume, the iron ore volume and the coke volume;

[0017] The number of second charge batches required to cover the uppermost portion of the damaged portion of the blast furnace is calculated according to the second charge volume, the iron ore volume and the coke volume.

[0018] Optionally, the expression of the first batch number is:

[0019]

[0020] Among them, n top Indicates the first batch number, v top Indicates the volume of the first charge, v ore represents the volume of iron minerals, v coke Indicates the volume of coke.

[0021] Optionally, the expression of the second batch number is:

[0022]

[0023] Among them, n end Indicates the second batch number, v end Indicates the volume of the second charge, v ore represents the volume of iron minerals, v coke Indicates the volume of coke.

[0024] Optionally, distributing materials to the blast furnace according to the total number of batches of materials comprises the steps of:

[0025] The wall of the cloth blast furnace is damaged;

[0026] Grouting area of ​​blast furnace;

[0027] Thick parts of cloth blast furnace.

[0028] Optionally, the method of damaging the wall of a distribution furnace comprises the following steps:

[0029] Use a mixture of coke and iron ore with a ratio of 9:1 or more to place it close to the damaged furnace wall within the radial range of 0-0.5m;

[0030] A mixture of coke and iron ore in a ratio of 5:5-4:6 is used to distribute the material close to the damaged furnace wall in the radial range of 0.5-1.0m.

[0031] Optionally, the distribution blast furnace grouting part includes the steps of:

[0032] A mixture of coke and iron ore in a ratio of 7:3 is used to distribute the blast furnace grouting in the radial range of 0-1.0m.

[0033] Optionally, the thickening part of the distribution blast furnace comprises the steps of:

[0034] A mixture of coke and iron ore in a ratio of 5:5 is used to distribute the blast furnace lining in the radial range of 0-1.5m.

[0035] According to a second aspect of the present invention, there is provided a device for correcting the shape of a blast furnace after lining, characterized in that it comprises:

[0036] Parameter acquisition module, used to obtain blast furnace charge parameters;

[0037] A batch number calculation module is used to calculate the total batch number of materials according to the blast furnace charge parameters;

[0038] The blast furnace charging module is used to charge the blast furnace according to the total number of batches of materials.

[0039] The technical solution provided by the present invention brings at least the following beneficial effects:

[0040] The present application provides a method and device for correcting the furnace shape after lining of a blast furnace, which creates conditions at the lining that are conducive to the filling of grouting materials and covering of damaged surfaces, thereby improving the integrity and strength of the lining. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or related technical descriptions are briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0043] Figure 1 A schematic flow chart of a method for correcting the shape of a blast furnace after lining is provided in an embodiment of the present invention;

[0044] Figure 2 A schematic structural diagram of a device for correcting the shape of a blast furnace after lining is provided in an embodiment of the present invention;

[0045] Figure 3 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention;

[0046] Figure 4 A schematic diagram of the structure of a storage medium provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] Figure 1 The present invention schematically shows a flow chart of a method for correcting the shape of a blast furnace after lining, which is applicable to an embodiment of the present invention.

[0049] See also Figure 1 The embodiment of the present invention provides a method for correcting the shape of a blast furnace after lining. The method can be applied to electronic devices, such as PCs, servers, terminals, etc. The method may include the following steps:

[0050] S1: Obtain blast furnace charge parameters;

[0051] Exemplarily, the step of obtaining blast furnace charge parameters comprises the following steps:

[0052] Get the batch number of blast furnace charge;

[0053] Obtain the volume of the first charge corresponding to the uppermost portion of the damaged part of the blast furnace;

[0054] Obtain the volume of the second charge corresponding to the lowest part of the damaged part of the blast furnace;

[0055] Obtain the volume of iron ore and coke in each batch of charge.

[0056] In an embodiment of the present application, when the blast furnace is in normal production, the total number of batches N (generally N=33-40) of charge added from the time the raw materials are charged to the furnace to the time the molten iron is discharged after smelting is calculated, and the positions of the top Htop and the bottom Hend of the damaged part of the blast furnace are calculated according to the design type of the blast furnace, as well as the corresponding volumes Vtop (also known as the first charge volume) and Vend (also known as the second charge volume) of the charge loaded, and the volume of iron ore Vore and the volume of coke Vcoke in each batch of charge are calculated.

[0057] S2: Calculate the total batch number of materials according to the blast furnace charge parameters;

[0058] Exemplarily, the step of calculating the total number of batches of material according to the blast furnace charge parameters comprises the following steps:

[0059] Obtaining a first charge volume, a second charge volume, an iron ore volume, and a coke volume from the blast furnace charge parameters;

[0060] Calculating the number of first batches of material required to cover the uppermost portion of the damaged portion of the blast furnace according to the first charge volume, the iron ore volume and the coke volume;

[0061] The number of second charge batches required to cover the uppermost portion of the damaged portion of the blast furnace is calculated according to the second charge volume, the iron ore volume and the coke volume.

[0062] In an embodiment of the present application, the number of batches ntop of materials required for the repair surface charge to completely reach and cover the damaged part Htop is calculated based on the first charge volume, the iron ore volume and the coke volume. In order to ensure that the charge on the repair surface can cover the upper end of the damaged part when it descends, 6 batches of materials are added on the basis of ntop to obtain the total number of batches Ntop required to cover Htop; the number of batches nend of materials required for the repair surface charge to completely cover the damaged part Hend is calculated based on the second charge volume, the iron ore volume and the coke volume. In order to ensure that the charge on the repair surface can reach and cover the damaged part Hend when it descends, 3 batches of materials are added on the basis of nend to obtain the total number of batches Nend required to cover the upper end.

[0063] Exemplarily, the expression of the first batch number is:

[0064]

[0065] Among them, n top Indicates the first batch number, v top Indicates the volume of the first charge, v ore represents the volume of iron minerals, v coke Indicates the volume of coke.

[0066] Exemplarily, the expression of the second batch number is:

[0067]

[0068] Among them, n end Indicates the second batch number, v end Indicates the volume of the second charge, v ore represents the volume of iron minerals, v coke Indicates the volume of coke.

[0069] S3: distributing materials to the blast furnace according to the total batch number of materials.

[0070] Exemplarily, the method of distributing materials to a blast furnace according to the total number of material batches comprises the following steps:

[0071] The wall of the cloth blast furnace is damaged;

[0072] Grouting area of ​​blast furnace;

[0073] Thick parts of cloth blast furnace.

[0074] In the embodiment of the present application, when the total batch number of materials is used to distribute the materials to the blast furnace, the materials are mainly distributed to the damaged wall of the blast furnace, the grouting part of the blast furnace and the thickened part of the blast furnace.

[0075] Exemplarily, the method of distributing the damaged wall of a blast furnace comprises the following steps:

[0076] Use a mixture of coke and iron ore with a ratio of 9:1 or more to place it close to the damaged furnace wall within the radial range of 0-0.5m;

[0077] A mixture of coke and iron ore in a ratio of 5:5-4:6 is used to distribute the material close to the damaged furnace wall in the radial range of 0.5-1.0m.

[0078] In the embodiment of the present application, the distribution of the repair charge to the damaged wall is controlled. The purpose of the distribution method is to ensure that the charge in step S2 reaches the lining part through distribution before the wind is stopped, that is, the coke-ore combination ratio within the radial range of 0 to 0.5 m close to the damaged furnace wall is Coke:Ore ≥ 9:1, and the ratio of ore (Ore) and coke (Coke) mixed charge 0.5 to 1.0 m inward is Coke:Ore = 5:5 to 4:6, and the distribution of other radial parts is carried out according to normal smelting.

[0079] Exemplarily, the distribution blast furnace grouting part includes the steps of:

[0080] A mixture of coke and iron ore in a ratio of 7:3 is used to distribute the blast furnace grouting in the radial range of 0-1.0m.

[0081] In the embodiment of the present application, the consolidation of the lining material at the grouting site is strengthened and the material is laid to prevent it from falling off. After the lining is completed, in order to strengthen the lining site and prevent it from falling off, in the initial 0 to 40 batches of materials (ntop to ntop + 40) of the smelting cycle, the material is laid according to the principle of controlling the airflow intensity at the lining site (furnace wall edge) and reducing the downward speed of the charge by 1 / 3 to 1 / 2 of the normal speed, that is, the coke-ore combination ratio within the radial range of 0 to 1.0 m at the grouting site is Coke: Ore = about 7: 3, and the material laying at other radial sites is carried out according to normal smelting, which increases the total proportion of coke at the edge of the furnace wall, and there is enough gas flow to reach the edge to bake the furnace wall. At the same time, because the proportion of ore at the edge of the furnace wall is small, the charge descends slowly, which will not scour the lining site, and will not produce more molten charge to make the lining site thicker, so as to achieve the purpose of improving the consolidation strength and integrity of the lining surface.

[0082] Exemplarily, the method of distributing thick parts of a blast furnace comprises the following steps:

[0083] A mixture of coke and iron ore in a ratio of 5:5 is used to distribute the blast furnace lining in the radial range of 0-1.5m.

[0084] In the embodiment of the present application, the thick part of the lining is loosened, detached and flattened. When 40 batches of materials (i.e.: Ntop+40) of charge pass through the grouting part, it is necessary to increase the proportion of ore and gas flow in the repaired part, and the temperature of the wall of this part is 15-20° higher than the normal and the downward speed of the charge (to the normal smelting speed). By using the cloth, the charge structure of the 40-120 batches of materials (Ntop+40-Ntop+120) after the air supply, that is, the charge structure at 0-1.5m radially close to the lining surface, is adjusted to Coke:Ore=5:5 or so, and the charge structure of other radial parts is carried out normally. In this way, on the one hand, the high-speed gas flow can be used to consume the coke consolidated inside the thick part, and to reduce and melt the consolidated ore inside, so that the thick surface forms a loose structure; on the other hand, the rapidly descending charge is used to drive the loose thick part to fall off and smooth its surface.

[0085] like Figure 2 The present application provides a device for correcting the shape of a blast furnace after lining, which is characterized by comprising:

[0086] Parameter acquisition module 10, used to obtain blast furnace charge parameters;

[0087] A batch number calculation module 20 is used to calculate the total batch number of materials according to the blast furnace charge parameters;

[0088] The blast furnace charging module 30 is used to charge the blast furnace according to the total number of batches of materials.

[0089] The device for correcting the shape of a blast furnace after lining is provided in the present application and can execute the method for correcting the shape of a blast furnace after lining provided in the above steps.

[0090] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In addition, the appended claims of the present invention are intended to cover all changes and modifications that fall within the scope and boundaries of the appended claims, or the equivalent forms of such scope and boundaries.

[0091] Reference below Figure 3 , which shows a schematic diagram of the structure of an electronic device 100 suitable for implementing the embodiment of the present disclosure. The electronic device in the embodiment of the present disclosure may include, but is not limited to, mobile terminals such as mobile phones, notebook computers, digital broadcast receivers, PDAs (personal digital assistants), PADs (tablet computers), PMPs (portable multimedia players), vehicle terminals (such as vehicle navigation terminals), etc., and fixed terminals such as digital TVs, desktop computers, etc. Figure 3The electronic device shown is only an example and should not bring any limitation to the functions and scope of use of the embodiments of the present disclosure.

[0092] like Figure 3 As shown, the electronic device 100 may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 101, which can perform various appropriate actions and processes according to a program stored in a read-only memory (ROM) 102 or a program loaded from a storage device 108 to a random access memory (RAM) 103. In the RAM 103, various programs and data required for the operation of the electronic device 100 are also stored. The processing device 101, the ROM 102, and the RAM 103 are connected to each other via a bus 104. An input / output (I / O) interface 105 is also connected to the bus 104.

[0093] Typically, the following devices may be connected to the I / O interface 105: an input device 106 including, for example, a touch screen, a touchpad, a keyboard, a mouse, an image sensor, a microphone, an accelerometer, a gyroscope, etc.; an output device 107 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 108 including, for example, a magnetic tape, a hard disk, etc.; and a communication device 109. The communication device 109 may allow the electronic device 100 to communicate with other devices wirelessly or by wire to exchange data. Although the electronic device 100 having various devices is shown in the figure, it should be understood that it is not required to implement or have all the devices shown. More or fewer devices may be implemented or have alternatively.

[0094] In particular, according to an embodiment of the present disclosure, the process described above with reference to the flowchart can be implemented as a computer software program. For example, an embodiment of the present disclosure includes a computer program product, which includes a computer program carried on a computer-readable medium, and the computer program contains program code for executing the method shown in the flowchart. In such an embodiment, the computer program can be downloaded and installed from the network through the communication device 109, or installed from the storage device 108, or installed from the ROM 102. When the computer program is executed by the processing device 101, the above-mentioned functions defined in the method of the embodiment of the present disclosure are executed.

[0095] Reference below Figure 4 , which shows a structural schematic diagram of a computer-readable storage medium suitable for implementing an embodiment of the present disclosure, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, it can implement the method for correcting the furnace shape after lining of a blast furnace as described in any of the above.

[0096] The present application also provides a computer program product, which includes a computer program / computer executable instructions, and when the computer program / computer executable instructions are executed by a processor of an electronic device, the steps of any of the above-mentioned methods for correcting the shape of a blast furnace after lining are implemented.

[0097] The present application provides a method and device for correcting the furnace shape after lining of a blast furnace, which creates conditions at the lining that are conducive to the filling of grouting materials and covering of damaged surfaces, thereby improving the integrity and strength of the lining.

[0098] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0099] The foregoing is merely a specific embodiment of the present invention, which enables those skilled in the art to understand or implement the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A method for correcting the shape of a blast furnace after lining, characterized in that: The method comprises the steps of: Get blast furnace charge parameters; Calculate the total batch number of materials according to the blast furnace charge parameters; The blast furnace is charged according to the total batch number of materials.

2. The method for correcting the furnace shape after lining the damaged wall in the soft melting area of ​​a blast furnace according to claim 1, characterized in that: The obtaining of blast furnace charge parameters comprises the steps of: Get the batch number of blast furnace charge; Obtain the volume of the first charge corresponding to the uppermost portion of the damaged part of the blast furnace; Obtain the volume of the second charge corresponding to the lowest part of the damaged part of the blast furnace; Obtain the volume of iron ore and coke in each batch of charge.

3. The method for correcting the furnace shape after lining the damaged wall in the soft melting area of ​​a blast furnace according to claim 1, characterized in that: The calculation of the total batch number of materials according to the blast furnace charge parameters comprises the steps of: Obtaining a first charge volume, a second charge volume, an iron ore volume, and a coke volume from the blast furnace charge parameters; Calculating the number of first batches of material required to cover the uppermost portion of the damaged portion of the blast furnace according to the first charge volume, the iron ore volume and the coke volume; The number of second charge batches required to cover the uppermost portion of the damaged portion of the blast furnace is calculated according to the second charge volume, the iron ore volume and the coke volume.

4. The method for correcting the furnace shape after lining the damaged wall in the soft melting area of ​​a blast furnace according to claim 3, characterized in that: The expression of the first batch number is: Among them, n top Indicates the first batch number, v top Indicates the volume of the first charge, v ore represents the volume of iron minerals, v coke Indicates the volume of coke.

5. The method for correcting the furnace shape after lining the damaged wall in the soft melting area of ​​a blast furnace according to claim 3, characterized in that: The expression of the second batch number is: Among them, n end Indicates the second batch number, v end Indicates the volume of the second charge, v ore represents the volume of iron minerals, v coke Indicates the volume of coke.

6. The method for correcting the furnace shape after lining the damaged wall in the soft melting area of ​​a blast furnace according to claim 1, characterized in that: The method of distributing materials to the blast furnace according to the total batch number of materials comprises the following steps: The wall of the cloth blast furnace is damaged; Grouting area of ​​blast furnace; Thick parts of cloth blast furnace.

7. The method for correcting the furnace shape after lining the damaged wall in the soft melting area of ​​a blast furnace according to claim 6, characterized in that: The damaged wall of the distribution blast furnace comprises the following steps: Use a mixture of coke and iron ore with a ratio of 9:1 or more to place it close to the damaged furnace wall within the radial range of 0-0.5m; A mixture of coke and iron ore in a ratio of 5:5-4:6 is used to distribute the material close to the damaged furnace wall in the radial range of 0.5-1.0m.

8. The method for correcting the furnace shape after lining the damaged wall in the soft melting area of ​​a blast furnace according to claim 6, characterized in that: The distribution blast furnace grouting part comprises the steps of: A mixture of coke and iron ore in a ratio of 7:3 is used to distribute the blast furnace grouting in the radial range of 0-1.0m.

9. The method for correcting the furnace shape after lining the damaged wall in the remelting area of ​​a blast furnace according to claim 6, characterized in that: The thickening part of the distribution furnace comprises the following steps: A mixture of coke and iron ore in a ratio of 5:5 is used to distribute the blast furnace lining in the radial range of 0-1.5m.

10. A device for correcting the shape of a blast furnace after lining, characterized in that: include: Parameter acquisition module, used to obtain blast furnace charge parameters; A batch number calculation module is used to calculate the total batch number of materials according to the blast furnace charge parameters; The blast furnace charging module is used to charge the blast furnace according to the total number of batches of materials.

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