A test device for droplet performance testing and primary slag extraction for coke research

Abstract

The present application provides a molten drop performance test and primary slag extraction test device for coke research, including a heating furnace, an inner flow channel is provided in the middle of the heating furnace, a graphite crucible is slidably installed in the middle of the inner flow channel, a thermocouple is provided in the middle of the heating furnace, a hollow hole is provided below the graphite crucible, a base is provided on the outside below the heating furnace, a rotating block is provided in the middle of the lower end of the base, the rotating block is driven by a motor, the motor drives the rotating shaft, a rotating table is fixedly installed on the upper end of the rotating shaft, and a weighing mechanism is provided in the middle of the rotating table. The present invention drives the graphite crucible as a whole to move up and down by the supporting crossbar and the load-bearing device through the driving mechanism, adjusts the flow rate control of the drip test by adjusting the height of the graphite crucible, and better controls the variables; the rotation of the integrated rotating table realizes the dynamic temperature detection of the coke titration experiment, controls the air intake in the middle of the inner flow channel through the air outlet, and forms a circulation of the air flow in the inner flow channel in combination with the air inlet.

Description

Technical Field

[0001] The invention relates to the field of steelmaking coke, in particular to a molten droplet performance test and primary slag extraction test device for coke research. Background Art

[0002] With the large-scale blast furnace and the improvement of equipment level, the long-term stable operation of blast furnace is of great importance. The three important factors affecting the smooth operation of blast furnace are coke quality, iron-containing raw material performance and blast furnace operation, among which coke quality has the greatest impact on the smooth operation of blast furnace. Coke is an essential raw material for blast furnace smelting, and the supporting role of coke skeleton is the prerequisite for achieving stable and smooth operation of blast furnace smelting. After blast furnace coal injection, the coke ratio into the furnace decreases, the deterioration of coke in the blast furnace is aggravated, and the quality of coke has a more prominent impact on blast furnace smelting. With the development of large-scale blast furnace and enhanced smelting technology, it is always the pursuit of coking workers to continuously improve the quality of coke to meet the requirements of blast furnace smelting for coke quality. At the same time, with the continuous increase of raw materials of different qualities and the reasonable application of high wind temperature, high oxygen enrichment and large coal injection technology, the quality of coke plays an increasingly important role in the stable operation of blast furnace production, especially the cold and hot strength of coke, coke reactivity and coke strength after reaction. Therefore, choosing appropriate coke economic indicators and maintaining stable coke quality can reduce blast furnace fluctuations and achieve the purpose of long-term stable operation.

[0003] Master the parameters such as the physical and chemical characteristics of iron-containing raw materials and coke commonly used in blast furnace production, and combine the blast furnace production data to preliminarily analyze the corresponding rules of raw material grade, coke quality and blast furnace indicators; then analyze the microstructure of coke from different commonly used sources, master its microcrystalline structure, functional group type, micromorphology and optical structure, and analyze the intrinsic relationship between the microstructure of coke and the macroscopic mechanical properties; then analyze and study the erosion process of coke in the soft melting zone and the slag penetration behavior of coke, master the analysis and characterization of initial slag formation of different grades of charge structures, the analysis of the erosion process of coke by slag corresponding to different grades of charge structures, and the retention behavior of slag with different components in coke of different qualities, and obtain the thermal erosion process parameters of coke under different grades of charge structures; finally, based on the above data, analyze the adaptability of raw materials and coke of different qualities, obtain the influence of improving raw material quality on blast furnace smelting based on the existing quality of coke quality, and the influence of high-quality coke oxygen-enriched, high wind temperature and large coal injection on blast furnace smelting, and give the influence of raw material quality and coke selection on cost under two operating modes.

[0004] The existing molten droplet performance test device for coke research cannot achieve dynamic temperature detection. In addition, the titration experimental equipment has a fixed structure and cannot achieve height adjustment, and its scope of use is small. Therefore, we propose a molten droplet performance test and initial slag extraction test device for coke research to solve the above problems. Summary of the invention

[0005] In order to overcome the shortcomings of the prior art, the purpose of the present invention is to investigate the microscopic morphology and optical structure of coke of different qualities, study the corresponding relationship between the microscopic structure and macroscopic performance of coke of different qualities, explore the correlation between the reactivity of coke, post-reaction strength, etc. and the isotropic and anisotropic structures of coke, and provide a theoretical basis for the selection of blast furnace coke raw materials; clarify the coke penetration behavior of slag corresponding to raw materials of different qualities in coke layers of different qualities, establish a comprehensive matching system of raw material characteristics and coke adaptability, and provide a theoretical basis for the coordinated operation of raw materials of different qualities and coke of different qualities.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] As a coke research droplet performance test and primary slag extraction test device, it includes:

[0008] The heating furnace is a hollow circular coil, an inner flow channel is arranged in the middle of the heating furnace, a graphite crucible is slidably mounted in the middle of the inner flow channel, an air inlet is arranged below the lower part of the inner flow channel, the gas in the inner flow channel is balanced through the air inlet, a thermocouple is arranged in the middle of the heating furnace, the heating furnace is driven by the thermocouple to heat the graphite crucible, coke to be heated in the middle of the graphite crucible is placed, and a hollow hole is arranged below the graphite crucible to test the droplet performance of the coke.

[0009] A base is provided on the outer side below the heating furnace, a rotating block is provided in the middle of the lower end of the base, the rotating block is driven by a motor, the motor drives the rotating shaft, a rotating table is fixedly installed on the upper end of the rotating shaft, the rotating table is driven by the rotating block to drive the rotating shaft, the lower end of the inner flow channel is connected to the side of the upper end of the rotating table, a weighing mechanism is provided in the middle of the rotating table, and a pipeline is provided on the upper end of the graphite crucible for communication.

[0010] Preferably, the graphite crucible comprises a pot body, which is a round structural block. A funnel is provided in the middle of the lower part of the pot body, and the funnel is provided with a plurality of groups of evenly distributed hollow holes. By heating the coke in the pot body, the dripping of the coke can be controlled.

[0011] Preferably, a receiving groove is provided below the pot body, and a clamping groove is provided on the upper part of the receiving groove, through which the pot body is clamped and placed, so as to place and control the high temperature of heating, and a ground groove is provided in the middle of the receiving groove for collecting the remaining ash in the pot body.

[0012] Preferably, a horizontal plate is provided at the bottom below the base, a vertical column is fixedly installed on the right side of the horizontal plate, and a driving mechanism is slidably installed above the vertical column.

[0013] Preferably, a supporting cross bar is provided on the left side of the driving mechanism, and a load-bearing device is fixedly connected to the left side of the supporting cross bar. The supporting cross bar and the load-bearing device are driven by the driving mechanism to move the graphite crucible up and down as a whole, and the flow rate control of the drip test is adjusted by adjusting the height of the graphite crucible to better control the variables.

[0014] Preferably, a cover plate is provided at the upper end of the inner flow channel for shielding, an air outlet is provided at the upper end of the inner flow channel through the cover plate, air intake of the middle part of the inner flow channel is controlled through the air outlet, and the airflow in the inner flow channel is circulated in combination with the air inlet.

[0015] Preferably, a load-bearing device is provided at the upper end of the inner flow channel, and the inner flow channel equipment as a whole is hoisted by the load-bearing device, and the inner flow channel equipment as a whole is weighed by the load-bearing device, so that the weight reduction of the dripping in the graphite crucible can be measured, thereby realizing the corresponding test of the quality of the coke by the coal slag dripping in the inner flow channel. The structure is simple and reliable, and the test of the coke quality can be realized.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The driving mechanism is used to move the supporting crossbar and the load-bearing device up and down as a whole, and the flow rate control of the drip test is adjusted by adjusting the height of the graphite crucible to better control the variables; the rotation of the integrated rotating table realizes the dynamic temperature detection of the coke titration experiment, and the air intake in the middle of the inner flow channel is controlled through the air outlet, and the air intake is combined with the air intake to circulate the air flow in the inner flow channel.

[0018] 2. The whole equipment of the inner flow channel is hoisted by a load-bearing device, and the whole equipment of the inner flow channel is weighed by the load-bearing device, so that the weight reduction of the dripping in the graphite crucible can be measured, so as to realize the corresponding test of the quality of the coke by the slag dripping in the inner flow channel. The structure is simple and reliable, and the test of the quality of the coke can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall structural diagram of a molten droplet performance test and primary slag extraction test device for coke research of the present invention;

[0020] Figure 2 This is a structural diagram of a molten droplet performance test device and a primary slag extraction test device for coke research of the present invention;

[0021] Figure 3 This is a structural diagram of a molten droplet performance test device and a primary slag extraction test device for coke research according to the present invention.

[0022] In the figure: 1. Heating furnace; 2. Base; 3. Rotating block; 4. Rotating table; 5. Thermocouple; 6. Graphite crucible; 61. Pot body; 62. Funnel; 63. Receiving groove; 7. Inner flow channel; 8. Air outlet; 9. Load-carrying device; 10. Air inlet; 11. Cover plate; 12. Cross plate; 13. Support cross bar; 14. Driving mechanism. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0024] The same parts are denoted by the same reference numerals. It should be noted that the words "front", "rear", "left", "right", "upper" and "lower" used in the following description refer to directions in the drawings, and the words "bottom" and "top", "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0025] Example 1

[0026] Reference Figure 1 As shown, as a test device for droplet performance test and primary slag extraction for coke research, it includes: a heating furnace 1, the heating furnace 1 is a hollow circular coil, an inner flow channel 7 is arranged in the middle of the heating furnace 1, a graphite crucible 6 is slidably installed in the middle of the inner flow channel 7, an air inlet 10 is arranged below the lower part of the inner flow channel 7, the gas in the inner flow channel 7 is balanced by the air inlet 10, a thermocouple 5 is arranged in the middle of the heating furnace 1, the heating furnace 1 is driven by the thermocouple 5 to heat the graphite crucible 6, the coke to be heated in the middle of the graphite crucible 6 is placed, and a hollow hole is arranged below the graphite crucible 6 to test the droplet performance of the coke,

[0027] A base 2 is provided on the lower outer side of the heating furnace 1, a rotating block 3 is provided in the middle of the lower end of the base 2, the rotating block 3 is driven by a motor, the motor drives the rotating shaft, a rotating table 4 is fixedly installed on the upper end of the rotating shaft, the rotating block 3 drives the rotating table 4 to drive the rotating shaft, the lower end of the inner flow channel 7 is connected to the side of the upper end of the rotating table 4, a weighing mechanism is provided in the middle of the rotating table 4, the upper end of the graphite crucible 6 is provided with a pipeline for communication, the upper end of the inner flow channel 7 is provided with a cover plate 11, which is used for shielding, and the upper end of the inner flow channel 7 passes through the cover The plate 11 is provided with an air outlet 8, through which the air intake of the middle part of the inner flow channel 7 is controlled, and the air flow in the inner flow channel 7 is circulated in combination with the air inlet 10. A load-bearing device 9 is provided at the upper end of the inner flow channel 7, and the load-bearing device 9 is used to hoist the entire equipment of the inner flow channel 7, and the load-bearing device 9 is used to weigh the entire equipment of the inner flow channel 7, so that the weight reduction of the dripping in the graphite crucible 6 can be measured, so as to realize the corresponding test of the quality of the coke by the coal slag dripping in the inner flow channel 7. The structure is simple and reliable, and the test of the quality of the coke can be realized.

[0028] Example 2

[0029] Reference Figure 1 As shown, as a test device for droplet performance test and primary slag extraction for coke research, it includes: a heating furnace 1, the heating furnace 1 is a hollow circular coil, an inner flow channel 7 is arranged in the middle of the heating furnace 1, a graphite crucible 6 is slidably installed in the middle of the inner flow channel 7, an air inlet 10 is arranged below the lower part of the inner flow channel 7, the gas in the inner flow channel 7 is balanced by the air inlet 10, a thermocouple 5 is arranged in the middle of the heating furnace 1, the heating furnace 1 is driven by the thermocouple 5 to heat the graphite crucible 6, the coke to be heated in the middle of the graphite crucible 6 is placed, and a hollow hole is arranged below the graphite crucible 6 to test the droplet performance of the coke,

[0030] A base 2 is provided on the lower outer side of the heating furnace 1, a rotating block 3 is provided in the middle of the lower end of the base 2, the rotating block 3 is driven by a motor, the motor drives the rotating shaft, a rotating table 4 is fixedly installed on the upper end of the rotating shaft, the rotating block 3 drives the rotating table 4 to drive the rotating shaft, the lower end of the inner flow channel 7 is connected to the side of the upper end of the rotating table 4, a weighing mechanism is provided in the middle of the rotating table 4, the upper end of the graphite crucible 6 is provided with a pipeline for communication, the upper end of the inner flow channel 7 is provided with a cover plate 11, which is used for shielding, and the upper end of the inner flow channel 7 passes through the cover The plate 11 is provided with an air outlet 8, through which the air outlet 8 is used to control the air intake in the middle of the inner flow channel 7, and the air inlet 10 is combined to form a circulation in the air flow in the inner flow channel 7. A load-bearing device 9 is provided at the upper end of the inner flow channel 7, and the whole equipment of the inner flow channel 7 is hoisted by the load-bearing device 9, and the whole equipment of the inner flow channel 7 is weighed by the load-bearing device 9, so that the weight reduction of the dripping in the graphite crucible 6 can be measured, so as to realize the corresponding test of the quality of the coke by the slag dripping in the inner flow channel 7. The structure is simple and reliable, and the test of the quality of the coke can be realized.

[0031] like Figure 2 As shown, the graphite crucible 6 includes a pot body 61, which is a round structural block. A funnel 62 is provided in the middle of the lower part of the pot body 61. The funnel 62 is provided with a plurality of groups of evenly distributed hollow holes. By heating the coke in the pot body 61, the dripping of the coke is controlled. A receiving groove 63 is provided under the pot body 61. A clamping groove is provided on the upper part of the receiving groove 63. The pot body 61 is clamped and placed through the receiving groove 63 for placing and controlling the heated high temperature. A ground groove is provided in the middle of the receiving groove 63 for collecting the residual ash in the pot body 61.

[0032] Example 3

[0033] Reference Figure 1 As shown, as a test device for droplet performance test and primary slag extraction for coke research, it includes: a heating furnace 1, the heating furnace 1 is a hollow circular coil, an inner flow channel 7 is arranged in the middle of the heating furnace 1, a graphite crucible 6 is slidably installed in the middle of the inner flow channel 7, an air inlet 10 is arranged below the lower part of the inner flow channel 7, the gas in the inner flow channel 7 is balanced by the air inlet 10, a thermocouple 5 is arranged in the middle of the heating furnace 1, the heating furnace 1 is driven by the thermocouple 5 to heat the graphite crucible 6, the coke to be heated in the middle of the graphite crucible 6 is placed, and a hollow hole is arranged below the graphite crucible 6 to test the droplet performance of the coke,

[0034] A base 2 is provided on the lower outer side of the heating furnace 1, a rotating block 3 is provided in the middle of the lower end of the base 2, the rotating block 3 is driven by a motor, the motor drives the rotating shaft, a rotating table 4 is fixedly installed on the upper end of the rotating shaft, the rotating block 3 drives the rotating table 4 to drive the rotating shaft, the lower end of the inner flow channel 7 is connected to the side of the upper end of the rotating table 4, a weighing mechanism is provided in the middle of the rotating table 4, the upper end of the graphite crucible 6 is provided with a pipeline for communication, the upper end of the inner flow channel 7 is provided with a cover plate 11, which is used for shielding, and the upper end of the inner flow channel 7 passes through the cover The plate 11 is provided with an air outlet 8, through which the air outlet 8 is used to control the air intake in the middle of the inner flow channel 7, and the air inlet 10 is combined to form a circulation in the air flow in the inner flow channel 7. A load-bearing device 9 is provided at the upper end of the inner flow channel 7, and the whole equipment of the inner flow channel 7 is hoisted by the load-bearing device 9, and the whole equipment of the inner flow channel 7 is weighed by the load-bearing device 9, so that the weight reduction of the dripping in the graphite crucible 6 can be measured, so as to realize the corresponding test of the quality of the coke by the slag dripping in the inner flow channel 7. The structure is simple and reliable, and the test of the quality of the coke can be realized.

[0035] like Figure 2 As shown, the graphite crucible 6 includes a pot body 61, which is a round structural block. A funnel 62 is provided in the middle of the lower part of the pot body 61. The funnel 62 is provided with a plurality of groups of evenly distributed hollow holes. The coke in the pot body 61 is heated to control the dripping of the coke. A receiving groove 63 is provided under the pot body 61. A clamping groove is provided on the upper part of the receiving groove 63. The pot body 61 is clamped and placed through the receiving groove 63 to place and control the heated high temperature. A ground groove is provided in the middle of the receiving groove 63 to collect the residual ash in the pot body 61.

[0036] like Figure 3 As shown, a horizontal plate 12 is arranged at the bottom below the base 2, a column is fixedly installed on the right side of the horizontal plate 12, a driving mechanism 14 is slidably installed above the column, a supporting cross bar 13 is arranged on the left side of the driving mechanism 14, and a load-bearing device 9 is fixedly connected to the left side of the supporting cross bar 13. The driving mechanism 14 drives the supporting cross bar 13 and the load-bearing device 9 to move the graphite crucible 6 up and down as a whole, and the flow rate control of the drip test is adjusted by adjusting the height of the graphite crucible 6 to better control the variables.

[0037] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A molten drop performance test and primary slag extraction test device for coke research, characterized in that: A heating furnace (1), wherein the heating furnace (1) is a hollow circular coil, an inner flow channel (7) is arranged in the middle of the heating furnace (1), a graphite crucible (6) is slidably mounted in the middle of the inner flow channel (7), an air inlet (10) is arranged below the lower part of the inner flow channel (7), a thermocouple (5) is arranged in the middle of the heating furnace (1), coke to be heated in the middle of the graphite crucible (6), a hollow hole is arranged below the graphite crucible (6), and a hole is formed on the outer side of the lower part of the heating furnace (1). A base (2) is provided, a rotating block (3) is provided in the middle of the lower end of the base (2), the rotating block (3) drives a rotating shaft through a motor, a rotating table (4) is fixedly installed on the upper end of the rotating shaft, the lower end of the inner flow channel (7) is connected to the side of the upper end of the rotating table (4), and a weighing mechanism is provided in the middle of the rotating table (4); a horizontal plate (12) is provided at the bottom below the base (2), a column is fixedly installed on the right side of the horizontal plate (12), and a driving mechanism (14) is slidably installed above the column; A support cross bar (13) is arranged on the left side of the driving mechanism (14), and a load-bearing device (9) is fixedly connected to the left side of the support cross bar (13), so that the support cross bar (13) and the load-bearing device (9) are driven by the driving mechanism (14) to move the graphite crucible (6) up and down as a whole; A cover plate (11) is provided at the upper end of the inner flow channel (7); The upper end of the inner flow channel (7) passes through the cover plate (11) to be provided with an air outlet (8).

2. The device for testing the droplet performance and primary slag extraction for coke research according to claim 1, characterized in that: The graphite crucible (6) comprises a pot body (61), the pot body (61) is a round structure block, a funnel (62) is arranged in the middle of the lower part of the pot body (61), and the funnel (62) is provided with a plurality of groups of evenly distributed hollow holes.

3. The device for testing the droplet performance and primary slag extraction for coke research according to claim 2, characterized in that: A receiving groove (63) is provided below the pot body (61), and a clamping groove is provided on the upper part of the receiving groove (63).

4. The device for testing the droplet performance and primary slag extraction for coke research according to claim 3, characterized in that: A ground groove is arranged in the middle of the receiving groove (63).

5. The device for testing droplet performance and primary slag extraction for coke research according to claim 1, characterized in that: A load-bearing device (9) is provided at the upper end of the inner flow channel (7).

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