CN102279091A - Test device and test method for simulating molten iron flow at furnace bottom of blast-furnace hearth - Google Patents
Test device and test method for simulating molten iron flow at furnace bottom of blast-furnace hearth Download PDFInfo
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Abstract
The invention relates to a test device and a test method for simulating molten iron flow at furnace bottom of a blast-furnace hearth. The test device comprises a cylindrical transparent container, a sealing cover, an air scattering hole, a cold air bustle pipe and water discharging ports, wherein the sealing cover is covered at the upper end of the cylindrical transparent container; the diameter of the sealing cover is matched with the inner diameter of the cylindrical transparent container; the air scattering hole is formed on the sealing cover; the cold air bustle pipe is arranged on the lower surface of the sealing cover; an encircling diameter of the cold air bustle pipe is matched with the inner diameter of the cylindrical transparent container; a cold air inlet is formed on the upper surface of the sealing cover; the cold air inlet is communicated with the cold air bustle pipe; a plurality of air outlets are uniformly formed on the cold air bustle pipe; the air outlets are faced to the interior of the cylindrical transparent container; and two water discharging ports are formed on the cylindrical transparent container. The test device provided by the invention has the advantages that the flow status at the furnace bottom of the blast-furnace hearth which cannot be observed under normal production condition can be directly reflected by the test device, the flow status at the furnace bottom of the blast-furnace hearth can be conveniently and comprehensively researched, the material consumption and the labor intensity are reduced and the test cost is saved.
Description
Technical field
The present invention relates to experimental provision and method that a kind of analog blast furnace cupola well furnace bottom molten iron flows, belong to metallurgical ironmaking studying technological domain.
Background technology
The cupola well furnace bottom is one of restriction site of blast furnace long-service life high-efficiency, and the molten iron flow state of research cupola well furnace bottom is to analyze the key that the cupola well furnace bottom corrodes rule, and the molten iron flow state of research cupola well furnace bottom is significant to blast furnace longevity.
In the real work, the temperature of molten iron is up to 1500 ℃ in the blast furnace crucibe, and the theoretical temperature combustion in air port is up to 2000 ℃.Pressure in the cupola well is up to 3～4 atmospheric pressure, and whole process of production is totally-enclosed form, its inner condition of production almost can not directly be observed by the external world, is difficult to analyze its reason when abnormal conditions appear in blast furnace hearth and bottom, gives metallargist's problem analysis, deals with problems and cause difficulty.
Domestic, the report of the experimental study under blast furnace hearth and bottom multiparameter condition is less, and unified experimental program and experimental standard are not proposed, mainly be because the factor that blast furnace hearth and bottom molten iron flow state relates to is more, need many cover experimental provisions or kinds of experiments method just can study, workload and experimental cost are bigger, are unfavorable for the researcher research work that is in full swing.Opinions vary in external physical Model Study aspect aspect blast furnace hearth and bottom molten iron flow state, design physical model voluntarily at field and the problem be concerned about separately, in the process of design physical model, proposed different hypothesis and ignored different influence factors, so far do not form unified experimental technique and standard, the result who obtains for different experiments can not quote mutually, confirmation mutually, causes a large amount of repeating to study and the wasting of resources.
Summary of the invention
At above technical matters, the present invention discloses the experimental provision that a kind of analog blast furnace cupola well furnace bottom molten iron flows, and discloses a kind of experimental technique that utilizes above-mentioned experimental provision analog blast furnace cupola well furnace bottom molten iron to flow simultaneously.
Explanation of nouns:
1, Laser Doppler Velocimeter: utilize the Doppler effect of laser to come a kind of instrument of measurement flow rate.It is to try to achieve flow velocity by the Doppler shift of measuring the generation of scatterer inscattering particle.
2, do not have burnt space: do not have coke or the very large zone of factor of porosity in blast furnace hearth and bottom, it may be present in the close region of cupola well sidewall and furnace bottom.
Concrete technical scheme of the present invention is as follows:
The experimental provision that a kind of analog blast furnace cupola well furnace bottom molten iron flows, comprise cylindrical shape transparent vessel, gland bonnet, air bulk storage hole, cold wind bustle pipe and dewatering outlet, described gland bonnet covers in the upper end of cylindrical shape transparent vessel, and the internal diameter of the diameter of gland bonnet and cylindrical shape transparent vessel adapts; Described air bulk storage hole is arranged on the gland bonnet; Lower surface at gland bonnet has the cold wind bustle pipe, and the internal diameter around diameter and cylindrical shape transparent vessel of described cold wind bustle pipe adapts; Upper surface at gland bonnet is provided with cold air inlet, and cold air inlet is connected with the cold wind bustle pipe; Evenly be provided with a plurality of air outlets on the described cold wind bustle pipe, air outlet is in the cylindrical shape transparent vessel; 2 dewatering outlets are arranged on the cylindrical shape transparent vessel;
Be provided with 4 right-angle triangle dividing plates in the bottom of cylindrical shape transparent vessel, two right-angle sides of triangle baffle link to each other with the bottom with cylindrical shape transparent vessel sidewall respectively, and are porose on the described triangle baffle, and the quantity in hole is 5～6, and diameter is 8-10mm;
Be provided with the dead stock column of simulation in the described cylindrical shape transparent vessel, comprise the string bag, hollow baton round and glass bead, hollow baton round and glass bead are contained in the plastics string bag jointly, and the diameter of described hollow baton round is respectively 6mm, 10mm, 25mm and 38mm.Dead stock column weight is regulated in acting as of the hollow baton round of various diameters and glass bead, by pack into the quantity of hollow baton round and glass bead of change, regulates the volume and weight of the dead stock column of simulation.
Described cylindrical shape transparent vessel shell is of a size of: high 500-600mm, internal diameter are 515-520mm, the cold wind bustle pipe be 500-510mm around diameter, the quantity of described air outlet is 8, the angle of described air outlet and surface level is the 20-70 degree.The cold wind bustle pipe be slightly less than the cylindrical vessel internal diameter of outer cover around diameter, be convenient to Installation and Debugging.
Described 2 dewatering outlets are respectively dewatering outlet and following dewatering outlet, and described dewatering outlet distance circle drum ladle distance from bottom down is 120mm-130mm, and following dewatering outlet diameter is 5mm-10mm, and the angle of following dewatering outlet and level is the 20-30 degree; Described upward dewatering outlet distance circle drum ladle distance from bottom is 240mm-260mm, and the angle of last dewatering outlet and level is the 20-30 degree, and the diameter of last dewatering outlet is 5mm-10mm.
Angle between adjacent two right-angle triangle dividing plates is 90 degree; Described triangle baffle is that right-angle side is the isosceles right triangle of 80-100mm, and thickness is 10-12mm; The material of described cylindrical shape transparent vessel is an organic glass, and described triangle baffle is a poly (methyl methacrylate) plate.The present invention adopts the organic glass material to make, and makes experiment more directly perceived, improves the reliability of experimental data.
When reaching experimental pressure in the need container, diffuse place, hole setting pressure table at air earlier, fan blower blasts air by cold air inlet, air outlet in the cylindrical shape transparent vessel, thereby produces the required pressure of experiment, closes fan blower when pressure reaches 3Kpa.
The principle of the real work situation of experimental provision analog blast furnace cupola well of the present invention is as follows:
Described cylindrical shape transparent vessel simulation cupola well furnace bottom, described gland bonnet is used for sealing, and can simulate the sealed high pressure state of blast furnace crucibe when experiment; The air port of described air outlet simulation cupola well is the cylindrical vessel internal pressurization by air outlet, the high pressure conditions of simulation cupola well; The burnt space of nothing in the described triangle lucite spacer simulation cupola well is considered that the disturbing factor in no burnt space make experimental demonstration more accurate in experiment; The iron mouth of described dewatering outlet simulation cupola well; The dead stock column of long-term deposition in the dead stock column of the described simulation simulation cupola well by pack into the quantity of hollow baton round and glass bead of change, is regulated the volume and weight of the dead stock column of simulation.
Experiment preliminary work:
1, vertical direction has scale on the wall of cylindrical shape transparent vessel, and precision is a millimeter.The purpose that the wall of cylindrical shape transparent vessel is provided with scale is: in order to simulate the variation of liquid level in the slag iron discharge process, with the Changing Pattern of research liquid level;
2, will simulate dead stock column and put into cylindrical vessel, its maximum gauge place is controlled between 400～450mm;
3, water filling in the cylindrical shape transparent vessel when reaching liquid level and reach 300mm, stops water filling;
4, treat liquid level stabilizing after, open down the dewatering outlet, measure the Changing Pattern of the flow of liquid level and following dewatering outlet in the cylindrical vessel.
Utilize the method for described experimental provision analog blast furnace cupola well furnace bottom molten iron flow state, step is as follows:
1) will simulate dead stock column and put into the cylindrical shape transparent vessel, regulate the maximum gauge of the dead stock column of simulation;
2) diffuse hole water filling in the cylindrical shape transparent vessel by air, when water filling highly reaches 300mm, open down the dewatering outlet, adjust injection flow, make liquid level constant, regulate the floating height of the dead stock column of simulation at 300mm;
3) open Laser Doppler Velocimeter, adjust the measuring position, make the camera lens of Laser Doppler Velocimeter be positioned at the level height of dewatering orifice, and make lens plane parallel with the longitudinal section of cylindrical shape transparent vessel;
4) Laser Doppler Velocimeter begins to survey flow rate of liquid, and the zone of testing the speed is near the mean flow rate about cylindrical shape transparent vessel inwall 50mm;
5) diameter of the xsect of cylindrical shape transparent vessel being divided equally with cut-point is 8 sections, described diameter aligns with the line of last dewatering outlet and last dewatering outlet, closely to direction order far away cut-point is numbered from the distance dewatering outlet, cut-point is respectively: 1,2,3,4,5,6,7; To divide 4 sections equally with cut-point with the perpendicular radius of described diameter, near home position to away from center of circle direction serial number, cut-point is respectively 8,9,10;
6) add tracer agent at cut-point 7 places, measure the mean residence time of tracer agent at other cut-point place except that cut-point 7; The mode of adding tracer agent is as follows: open air and diffuse the hole, directly pouring massfraction into to cut-point 7 places is 5%, and temperature is 100 degrees centigrade liquor potassic permanganate 100ml, closes air and diffuses the hole, is forced into 3Kpa again in the cylindrical shape transparent vessel;
7) observe and recording drum shape transparent vessel in current condition emotionally.
The maximum gauge of regulating the dead stock column of simulation in step 1) is 300～350mm.
The maximum gauge of regulating the dead stock column of simulation in step 1) is 400～450mm.
In step 2) in regulate the floating height of the dead stock column of simulation, make its distance from bottom cylindrical shape transparent vessel bottom to 230mm, open the dewatering outlet, close down the dewatering outlet;
In step 2) in regulate the floating height of the dead stock column of simulation, make its distance from bottom cylindrical shape transparent vessel bottom to 100mm;
In step 2) in regulate the floating height of the dead stock column of simulation after, keep the floating height of the dead stock column of simulation constant, in the dead stock column of simulation, increase the ratio of the less hollow baton round of diameter.
The invention has the beneficial effects as follows:
1, the present invention analyzes the flow state of blast furnace hearth and bottom molten iron intuitively by simple experimental program;
2, the present invention can realize multinomial research contents under same set of experimental provision, the scientific research personnel that can help more all sidedly to smelt iron analyzes the duty of blast furnace hearth and bottom, reach of the influence of each objective factor, can save scientific research cost, can increase work efficiency again cupola well furnace bottom duty.
3, the present invention can reflect the cupola well furnace bottom flow state that blast furnace can't be observed intuitively under normal production conditions, can test the velocity distribution and the circulation movement of cupola well furnace bottom, can simulate the high pressure and the air blast state of actual blast furnace, " the heavy seat ", " floating " state of dead stock column in can the analog blast furnace cupola well, can change iron mouth length and air port length apace, help understanding the production law of blast furnace enclosed system.
4, the present invention simulates the variation that has realized iron mouth length, the length in air port, dead stock column shape, blast and air quantity, is convenient to the flow state of synthetic study cupola well furnace bottom, has reduced material consumption and labour intensity, has saved experimental cost.
Description of drawings
Fig. 1 is the structural representation of experimental provision of the present invention;
Fig. 2 is the structural representation of triangle lucite spacer;
Fig. 3 is the arrangenent diagram of triangle lucite spacer in cylindrical shape transparent vessel bottom;
Fig. 4 is that mean residence time measurement point and tracer agent add the some synoptic diagram;
Wherein, 1, air diffuses the hole; 2, gland bonnet; 3, dewatering outlet; 4., cylindrical shape transparent vessel; 5, cold wind bustle pipe; 6, cold air inlet; 7, air outlet; 8, triangle lucite spacer; 20, circular hole.
Embodiment
The invention will be further described below in conjunction with accompanying drawing and embodiment, but be not limited thereto.
The experimental provision that a kind of analog blast furnace cupola well furnace bottom molten iron flows, comprise cylindrical shape transparent vessel, gland bonnet, air bulk storage hole, cold wind bustle pipe and dewatering outlet, described gland bonnet covers in the upper end of cylindrical shape transparent vessel, and the internal diameter of the diameter of gland bonnet and cylindrical shape transparent vessel adapts; Described air bulk storage hole is arranged on the gland bonnet; Lower surface at gland bonnet has the cold wind bustle pipe, and the internal diameter around diameter and cylindrical shape transparent vessel of described cold wind bustle pipe adapts; Upper surface at gland bonnet is provided with cold air inlet, and cold air inlet is connected with the cold wind bustle pipe; Evenly be provided with a plurality of air outlets on the described cold wind bustle pipe, air outlet is in the cylindrical shape transparent vessel; 2 dewatering outlets are arranged on the cylindrical shape transparent vessel;
Be provided with 4 right-angle triangle dividing plates in the bottom of cylindrical shape transparent vessel, two right-angle sides of triangle baffle link to each other with the bottom with container side wall respectively, and are porose on the described triangle baffle, and the quantity in hole is 6, and diameter is 8mm;
Be provided with the dead stock column of simulation in the described cylindrical shape transparent vessel, comprise the string bag, hollow baton round and glass bead, hollow baton round and glass bead are contained in the plastics string bag jointly, the diameter of described hollow baton round is respectively 6mm, 10mm, 25mm and 38mm: diameter is 31500 of the hollow baton rounds of 6mm, diameter is 2250 of the hollow baton rounds of 10mm, diameter is 2750 of the hollow baton rounds of 25mm, and diameter is 500 of the hollow baton rounds of 38mm.Dead stock column weight is regulated in acting as of the hollow baton round of various diameters and glass bead, by pack into the quantity of hollow baton round and glass bead of change, regulates the volume and weight of the dead stock column of simulation.
Described cylindrical shape transparent vessel shell is of a size of: high 550mm, internal diameter is 512mm, the cold wind bustle pipe be 510mm around diameter, the quantity of described air outlet is 8, the angle of described air outlet and surface level is 20 degree, the cold wind bustle pipe be slightly less than the cylindrical vessel internal diameter of outer cover around diameter, be convenient to Installation and Debugging.
Described 2 dewatering outlets are respectively dewatering outlet and following dewatering outlet, and described dewatering outlet distance circle drum ladle distance from bottom down is 120mm, and following dewatering outlet diameter is 8mm, and the angle of following dewatering outlet and level is the 20-30 degree; Described upward dewatering outlet distance circle drum ladle distance from bottom is 240mm, and the angle of last dewatering outlet and level is the 20-30 degree, and the diameter of last dewatering outlet is 8mm.
Angle between adjacent two right-angle triangle dividing plates is 90 degree; Described triangle baffle is that right-angle side is the isosceles right triangle of 80-100mm, and thickness is 10mm; The material of described cylindrical shape transparent vessel is an organic glass, and described triangle baffle is a poly (methyl methacrylate) plate.The present invention adopts the organic glass material to make, and makes experiment more directly perceived, improves the reliability of experimental data.
Utilize the method for embodiment 1 described experimental provision analog blast furnace cupola well furnace bottom molten iron flow state, step is as follows:
1) will simulate dead stock column and put into the cylindrical shape transparent vessel, the maximum gauge of regulating the dead stock column of simulation is 400～450mm;
2) diffuse hole water filling in the cylindrical shape transparent vessel by air, when water filling highly reaches 300mm, open down the dewatering outlet, adjust injection flow, make liquid level constant, regulate the floating height of the dead stock column of simulation, make the distance from bottom container bottom 100mm of the dead stock column of simulation at 300mm;
3) open Laser Doppler Velocimeter, adjust the measuring position, make the camera lens of Laser Doppler Velocimeter be positioned at the level height of dewatering orifice, and make lens plane parallel with the longitudinal section of cylindrical shape transparent vessel;
4) Laser Doppler Velocimeter begins to survey flow rate of liquid, and the zone of testing the speed is near the mean flow rate about cylindrical shape transparent vessel inwall 50mm; The purpose that tests the speed herein is: after experiment finishes, and the speed data measured according to Laser Doppler Velocimeter, flow field figure draws;
5) diameter of the xsect of cylindrical shape transparent vessel being divided equally with cut-point is 8 sections, described diameter aligns with the line of last dewatering outlet and last dewatering outlet, closely to direction order far away cut-point is numbered from the distance dewatering outlet, cut-point is respectively: 1,2,3,4,5,6,7; To divide 4 sections equally with cut-point with the perpendicular radius of described diameter, near home position to away from center of circle direction serial number, cut-point is respectively 8,9,10;
6) add tracer agent at cut-point 7 places, measure the mean residence time of tracer agent at other cut-point place except that cut-point 7; The mode of adding tracer agent is as follows: open air and diffuse the hole, directly pouring massfraction into to cut-point 7 places is 5%, and temperature is 100 degrees centigrade liquor potassic permanganate 100ml, closes air and diffuses the hole, is forced into 3Kpa again in the cylindrical shape transparent vessel;
7) observe and recording drum shape transparent vessel in current condition emotionally.
As embodiment 2 described methods, its difference is that the maximum gauge that described step 1) is regulated the dead stock column of simulation is 300～350mm.
Embodiment 4,
As embodiment 2 described methods, its difference is, in step 2) in regulate the floating height of the dead stock column of simulation, make its distance from bottom cylindrical shape transparent vessel bottom to 230mm, open the dewatering outlet, close down the dewatering outlet.
Embodiment 5,
As embodiment 2 described methods, its difference is, in step 2) in regulate the floating height of the dead stock column of simulation, make its distance from bottom cylindrical shape transparent vessel bottom to 100mm.
Embodiment 6,
As embodiment 2 described methods, its difference is, in step 2) in regulate the floating height of the dead stock column of simulation after, keep the floating height of the dead stock column of simulation constant, in the dead stock column of simulation, increase the ratio of the less hollow baton round of diameter.
Claims (10)
1. the experimental provision that flows of an analog blast furnace cupola well furnace bottom molten iron, comprise cylindrical shape transparent vessel, gland bonnet, air bulk storage hole, cold wind bustle pipe and dewatering outlet, described gland bonnet covers in the upper end of cylindrical shape transparent vessel, and the internal diameter of the diameter of gland bonnet and cylindrical shape transparent vessel adapts; Described air bulk storage hole is arranged on the gland bonnet; Lower surface at gland bonnet has the cold wind bustle pipe, and the internal diameter around diameter and cylindrical shape transparent vessel of described cold wind bustle pipe adapts; Upper surface at gland bonnet is provided with cold air inlet, and cold air inlet is connected with the cold wind bustle pipe; Evenly be provided with a plurality of air outlets on the described cold wind bustle pipe, air outlet is in the cylindrical shape transparent vessel; 2 dewatering outlets are arranged on the cylindrical shape transparent vessel;
Be provided with 4 right-angle triangle dividing plates in the bottom of cylindrical shape transparent vessel, two right-angle sides of triangle baffle link to each other with the bottom with container side wall respectively, and are porose on the described triangle baffle, and the quantity in hole is 5～6, and diameter is 8-10mm;
Be provided with the dead stock column of simulation in the described cylindrical shape transparent vessel, comprise the string bag, hollow baton round and glass bead, hollow baton round and glass bead are contained in the plastics string bag jointly, and the diameter of described hollow baton round is respectively 6mm, 10mm, 25mm and 38mm.
2. experimental provision as claimed in claim 1, it is characterized in that, described cylindrical shape transparent vessel shell is of a size of: high 500-600mm, internal diameter is 515-520mm, the cold wind bustle pipe be 500-510mm around diameter, the quantity of described air outlet is 8, and the angle of described air outlet and surface level is the 20-70 degree.
3. experimental provision as claimed in claim 1, it is characterized in that, described 2 dewatering outlets are respectively dewatering outlet and following dewatering outlet, described dewatering outlet distance circle drum ladle distance from bottom down is 120mm-130mm, following dewatering outlet diameter is 5mm-10mm, and the angle of following dewatering outlet and level is the 20-30 degree; Described upward dewatering outlet distance circle drum ladle distance from bottom is 240mm-260mm, and the angle of last dewatering outlet and level is the 20-30 degree, and the diameter of last dewatering outlet is 5mm-10mm.
4. experimental provision as claimed in claim 1 is characterized in that, the angle between adjacent two right-angle triangle dividing plates is 90 degree; Described triangle baffle is that right-angle side is the isosceles right triangle of 80-100mm, and thickness is 10-12mm; The material of described cylindrical shape transparent vessel is an organic glass, and described triangle baffle is a poly (methyl methacrylate) plate.
5. utilize the method for the described experimental provision analog blast furnace of claim 1 cupola well furnace bottom molten iron flow state, step is as follows:
1) will simulate dead stock column and put into the cylindrical shape transparent vessel, regulate the maximum gauge of the dead stock column of simulation;
2) diffuse hole water filling in the cylindrical shape transparent vessel by air, when water filling highly reaches 300mm, open down the dewatering outlet, adjust injection flow, make liquid level constant, regulate the floating height of the dead stock column of simulation at 300mm;
3) open Laser Doppler Velocimeter, adjust the measuring position, make the camera lens of Laser Doppler Velocimeter be positioned at the level height of dewatering orifice, and make lens plane parallel with the longitudinal section of cylindrical shape transparent vessel;
4) Laser Doppler Velocimeter begins to survey flow rate of liquid, and the zone of testing the speed is near the mean flow rate about cylindrical shape transparent vessel inwall 50mm;
5) diameter of the xsect of cylindrical shape transparent vessel being divided equally with cut-point is 8 sections, described diameter aligns with the line of last dewatering outlet and last dewatering outlet, closely to direction order far away cut-point is numbered from the distance dewatering outlet, cut-point is respectively: 1,2,3,4,5,6,7; To divide 4 sections equally with cut-point with the perpendicular radius of described diameter, near home position to away from center of circle direction serial number, cut-point is respectively 8,9,10;
6) add tracer agent at cut-point 7 places, measure the mean residence time of tracer agent at other cut-point place except that cut-point 7; The mode of adding tracer agent is as follows: open air and diffuse the hole, directly pouring massfraction into to cut-point 7 places is 5%, and temperature is 100 degrees centigrade liquor potassic permanganate 100ml, closes air and diffuses the hole, is forced into 3Kpa again in the cylindrical shape transparent vessel;
7) observe and recording drum shape transparent vessel in current condition emotionally.
6. method as claimed in claim 5 is characterized in that, the maximum gauge of regulating the dead stock column of simulation in step 1) is 300～350mm.
7. method as claimed in claim 5 is characterized in that, the maximum gauge of regulating the dead stock column of simulation in step 1) is 400～450mm.
8. method as claimed in claim 5 is characterized in that, in step 2) in regulate the floating height of the dead stock column of simulation, make its distance from bottom cylindrical shape transparent vessel bottom to 230mm, open the dewatering outlet, close down the dewatering outlet.
9. method as claimed in claim 5 is characterized in that, in step 2) in regulate the floating height of the dead stock column of simulation, make its distance from bottom cylindrical shape transparent vessel bottom to 100mm.
10. method as claimed in claim 5 is characterized in that, in step 2) in regulate the floating height of the dead stock column of simulation after, keep the floating height of the dead stock column of simulation constant, in the dead stock column of simulation, increase the ratio of the less hollow baton round of diameter.
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| CN103695583A (en) * | 2013-12-30 | 2014-04-02 | 辽宁科技学院 | Electromechanical integration test device of blast furnace |
| CN105277334A (en) * | 2014-07-16 | 2016-01-27 | 鞍钢股份有限公司 | Apparatus for simulating flow of molten iron in hearth of blast furnace, and method thereof |
| CN106929615A (en) * | 2017-04-13 | 2017-07-07 | 安徽工业大学 | A kind of blast furnace crucibe numerical simulation and resolution system and its control method |
| CN109283219A (en) * | 2018-12-07 | 2019-01-29 | 中南大学 | A kind of experimental rig and method of big temperature difference mixed convection heat transfer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106929615A (en) * | 2017-04-13 | 2017-07-07 | 安徽工业大学 | A kind of blast furnace crucibe numerical simulation and resolution system and its control method |
| CN109283219A (en) * | 2018-12-07 | 2019-01-29 | 中南大学 | A kind of experimental rig and method of big temperature difference mixed convection heat transfer |
| CN109283219B (en) * | 2018-12-07 | 2021-06-01 | 中南大学 | Large-temperature-difference mixed convection heat transfer testing device and method |
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