Experimental device for measuring hot crack index of lump ore

Abstract

The utility model discloses an experimental device for measuring the hot crack index of lump ore, which comprises a muffle furnace provided with a furnace door and a hearth, and a plurality of through holes arranged at the top of the muffle furnace; a plurality of penetrating holes are formed in the top of the loading mechanism, the penetrating holes correspond to the through holes, and a plurality of material boxes are arranged in the loading mechanism; a thermodetector is arranged on one side of the muffle furnace, a plurality of thermocouples are arranged at one end of the thermodetector, and the thermocouples penetrate through the through holes and extend into the hearth; and a temperature controller is also arranged on one side of the muffle furnace. The device can monitor the temperature condition in the hearth in real time, and accurate control over the temperature in the experiment process is ensured; the loading mechanism enables the material box for bearing lump ore samples to be loaded and taken out conveniently, experimental heating can be carried out on a plurality of lump ores at the same time, it is guaranteed that the experimental temperature and time are both carried out under the same condition, ten lump ore hot crack index detection experiments can be rapidly completed after the lump ores are taken out and cooled, time and labor are saved, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of ore detection, in particular to an experimental device for measuring the thermal cracking index of a lump ore. Background Art

[0002] The thermal cracking property of natural rich lump ore is an important metallurgical property of iron ore. Poor thermal cracking property will reduce the permeability of blast furnace charge column and deteriorate blast furnace smelting index. Natural lump ore of different types from different origins has different cracking properties. In production, it is necessary to measure the thermal cracking index of different types of natural rich lump ore to reasonably match the ore. According to the national standard GB / T10322.6-2004 / ISO8371:1994, the lump ore sample should be tested ten times.

[0003] In the related art, the conventional method is to use an iron ore low-temperature reduction pulverization measuring device to conduct experiments. The experiment is conducted once, and it cannot be guaranteed that the temperature and time of each experiment are conducted under the same conditions. It is greatly subject to human interference. At the same time, the frequent heating and cooling of the experimental equipment will cause a lot of working time to be occupied. It takes three working days to complete a block ore thermal cracking index test, which is time-consuming and labor-intensive, and has low work efficiency. Utility Model Content

[0004] The utility model aims to provide an experimental device for measuring the thermal cracking index of lump ore, so as to solve at least one aspect of the problems and defects raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An experimental device for measuring the thermal cracking index of lump ore, comprising:

[0007] A muffle furnace, wherein the muffle furnace is provided with a furnace door and a furnace chamber, and a plurality of through holes are provided on the top of the muffle furnace;

[0008] A loading mechanism, wherein a plurality of through holes are arranged on the top of the loading mechanism, the plurality of through holes are arranged correspondingly to the plurality of through holes, and a plurality of material boxes are arranged in the loading mechanism;

[0009] A temperature measuring instrument is arranged on one side of the muffle furnace, and a plurality of thermocouples are arranged on one end of the temperature measuring instrument, and the plurality of thermocouples are penetrated through the plurality of through holes and extend into the furnace;

[0010] A temperature controller is also provided on one side of the muffle furnace.

[0011] The experimental device for determining the thermal cracking index of lump ore according to this scheme has at least the following technical effects:

[0012] The experimental device for determining the thermal cracking index of lump ore is provided with a plurality of through holes on the furnace top of the muffle furnace, a charging mechanism is provided in the furnace, and a plurality of through holes are provided on the top of the charging mechanism, and a plurality of thermocouples of a temperature measuring instrument pass through the plurality of through holes and the plurality of through holes correspondingly to reach the top of the lump ore, so that the temperature in the furnace can be monitored in real time, and the accurate control of the temperature during the experiment is ensured, and the experimental temperature in the furnace is maintained, so that the ore block can maintain the temperature required for the experiment; and the charging mechanism makes it easy to load and take out the material box carrying the lump ore sample, and can perform experimental heating on a plurality of lump ore at the same time, so as to ensure that the temperature and time of each experiment are carried out under the same conditions, and after being taken out and cooled, ten detection experiments of the thermal cracking index of the lump ore can be completed quickly, which saves time and labor and improves work efficiency.

[0013] As a further solution of the utility model: the loading mechanism is a loading rack.

[0014] As a further solution of the utility model: legs are respectively provided on both sides of the loading rack, a storage plate is provided in the middle between the legs on both sides, a plurality of storage holes are opened on the storage plate, and a plurality of material boxes are correspondingly provided in the plurality of storage holes.

[0015] By arranging supporting legs on both sides of the loading rack, a placing plate is arranged between the middle parts of the supporting legs on both sides, a plurality of placing holes are opened on the placing plate, and a plurality of material boxes are arranged correspondingly in the plurality of placing holes, so that the loading rack is convenient for loading and unloading of material boxes, and also convenient for the loading rack to enter and exit the furnace, thereby improving the convenience of operation and realizing the continuity of work.

[0016] As a further solution of the utility model: a limiting groove is arranged at the bottom of the furnace, and the supporting legs on both sides are arranged in the limiting groove.

[0017] Since a limit groove is provided at the bottom of the furnace and the supporting legs on both sides are arranged in the limit groove, during the experiment, the supporting legs on both sides of the charging rack are fixed in the limit groove, thereby preventing the charging rack from being offset or misaligned due to vibration, improving the alignment between the thermocouple and the perforation on the top of the charging rack, and ensuring the accuracy of the detection of the lump ore temperature.

[0018] As a further solution of the utility model: a cover plate is detachably provided on the top of the loading rack, and a plurality of the perforations are provided on the cover plate.

[0019] By arranging a detachable cover plate on the top of the loading rack, when the lump ore sample needs to be heated, the cover plate is removed to facilitate the loading and unloading of the material box; and a plurality of perforations are arranged on the cover plate. After the cover plate is installed and the loading rack is placed in the furnace, it is convenient for thermocouples to pass through the perforations, so that the plurality of thermocouples correspond to the plurality of material boxes, thereby realizing the simultaneous temperature detection of the lump ores in different material boxes.

[0020] As a further solution of the present invention: the number of the through hole, the through hole, the storage hole and the material box is set to 4.

[0021] By setting the number of through holes, perforations, storage holes and material boxes to 4, it only takes three times to complete the ten block ore temperature tests required by the national standard. At the same time, the accuracy and work efficiency of the temperature detection can be guaranteed, so that the thermal cracking index test can be carried out after the block ore is taken out and cooled. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0023] Figure 1 The schematic diagram of the structure of an experimental device for determining the thermal cracking index of lump ore is shown in FIG.

[0024] Figure 2 A schematic diagram of the structure of a muffle furnace, an experimental device for determining the thermal cracking index of lump ore;

[0025] Figure 3 This is a schematic diagram of the charging rack structure of an experimental device for determining the thermal cracking index of lump ore;

[0026] Figure 4 This is a schematic diagram of the top view of the loading rack of an experimental device for measuring the thermal cracking index of lump ore.

[0027] Reference numerals:

[0028] 10. Muffle furnace; 101. Furnace door; 102. Furnace chamber; 103. Through hole; 104. Limiting groove; 20. Loading mechanism; 201. Through hole; 202. Loading rack; 203. Support leg; 204. Storage plate; 205. Storage hole; 206. Cover plate; 30. Thermometer; 301. Thermocouple; 40. Temperature controller; 50. Material box. DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0032] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0033] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. The components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0034] Therefore, the following detailed description of the embodiments of the utility model provided in the accompanying drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents selected embodiments of the utility model. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0035] like Figure 1-4 The embodiment of the utility model shown is an experimental device for determining the thermal cracking index of lump ore, comprising: a muffle furnace 10, the muffle furnace 10 is provided with a furnace door 101 and a furnace chamber 102, and a plurality of through holes 103 are provided on the top of the muffle furnace 10; a charging mechanism 20, the charging mechanism 20 is arranged in the furnace chamber 102; a plurality of through holes 201 are provided on the top of the charging mechanism 20, and the plurality of through holes 201 are arranged corresponding to the plurality of through holes 103, and a plurality of material boxes 50 are arranged in the charging mechanism 20; a thermometer 30 is provided on one side of the muffle furnace 10, and a plurality of thermocouples 301 are provided at one end of the thermometer 30, and the plurality of thermocouples 301 are penetrated through the plurality of through holes 103 and extend into the furnace chamber 102; a temperature controller 40 is also provided on one side of the muffle furnace 10.

[0036] When in use, a plurality of material boxes 50 are placed in the charging mechanism 20, the furnace door 101 is opened, the charging mechanism 20 is placed in the furnace 102, a plurality of thermocouples 301 in the plurality of through holes 103 are lowered, and correspondingly pass through the plurality of through holes 201 to be inserted into the plurality of material boxes 50; the furnace door 101 is closed, the muffle furnace 101 is started and the temperature controller 40 is adjusted to raise the temperature in the furnace 102 to 700°C to preheat the material boxes 50; after maintaining the constant temperature for 20 minutes, the furnace 102 is heated to 700°C. Open the furnace door 101, raise a number of thermocouples 301, take out the charging mechanism 20, load a number of block ore samples into a number of material boxes 50 respectively, then place the charging mechanism 20 into the furnace 102, lower a number of thermocouples 301, insert them into a number of material boxes 50, close the furnace door 101, wait for 30 minutes, open the furnace door 101 again and take out the charging mechanism 20, after the charging mechanism 20 cools to room temperature, take out the block ore sample and perform thermal cracking index detection.

[0037] Specifically, the experimental device for determining the thermal cracking index of lump ore is provided with a plurality of through holes 103 on the top of the muffle furnace 10, a charging mechanism 20 is provided in the furnace 102, and a plurality of through holes 201 are provided on the top of the charging mechanism 20, and a plurality of thermocouples 301 of the temperature measuring instrument 30 pass through the plurality of through holes 103 and the plurality of through holes 201 correspondingly to reach the top of the lump ore, so that the temperature in the furnace 102 can be monitored in real time, and the accurate control of the temperature during the experiment is ensured, and the experimental temperature in the furnace is maintained, so that the ore block maintains the temperature required for the experiment; and the charging mechanism 20 makes it easy to load and take out the material box 50 carrying the lump ore sample, and can also perform experimental heating on multiple lump ore at the same time, so as to ensure that the temperature and time of each experiment are carried out under the same conditions. After being taken out and cooled, ten detection experiments of the thermal cracking index of the lump ore can be completed quickly, which saves time and effort and improves work efficiency.

[0038] Table 1 shows the results of the determination of the explosion index of high explosion block ore:

[0039] DI-6.30 Standard method determination results / % The results of this method are % 1 time 10.27 11.34 2 times 16.28 14.36 3 times 11.63 10.36 4 times 10.74 10.31 5 times 12.66 13.26 6 times 14.24 12.11 7 times 10.80 10.24 8 times 11.80 11.57 9 times 11.23 11.9 10 times 11.65 10.98 average 12.13 11.64

[0040] Table 1

[0041] like Figure 3 and Figure 4 As shown, the loading mechanism 20 is a loading rack 202; legs 203 are respectively provided on both sides of the loading rack 202, a storage plate 204 is provided in the middle between the legs 203 on both sides, a plurality of storage holes 205 are opened on the storage plate 204, and a plurality of material boxes 50 are correspondingly arranged in the plurality of storage holes 205.

[0042] Specifically, by respectively providing legs 203 on both sides of the loading rack 202, a placement plate 204 is provided between the middle parts of the legs 203 on both sides, a plurality of placement holes 205 are opened on the placement plate 204, and a plurality of material boxes 50 are correspondingly provided in the plurality of placement holes 205, so that the loading rack 202 is convenient for loading and unloading the material boxes 50, and also convenient for the loading rack 202 to enter and exit the furnace 102, thereby improving the convenience of operation and realizing the continuity of work.

[0043] like Figure 2 As shown, a limiting groove 104 is provided at the bottom of the furnace 102 , and the supporting legs 203 on both sides are arranged in the limiting groove 104 .

[0044] Specifically, since a limiting groove 104 is provided at the bottom of the furnace 102 and the two side legs 203 are provided in the limiting groove 104, during the experiment, the two side legs 203 of the loading rack 202 are fixed in the limiting groove 104, so as to avoid the loading rack 202 from being offset or misaligned due to vibration, thereby improving the alignment between the thermocouple 301 and the top through hole 201 of the loading rack 202 and ensuring the accuracy of the detection of the lump ore temperature.

[0045] like Figure 3 As shown, a cover plate 206 is detachably provided on the top of the loading rack 202 , and a plurality of through holes 201 are provided on the cover plate 206 .

[0046] Specifically, by detachably setting a cover plate 206 on the top of the loading rack 202, when the lump ore sample needs to be heated, the cover plate 206 is removed to facilitate the loading and unloading of the material box 50; and a plurality of through holes 201 are set on the cover plate 206. After the cover plate 206 is installed and the loading rack 202 is placed in the furnace 102, it is convenient for the thermocouple 301 to pass through the through holes 201, so that the plurality of thermocouples 301 correspond to the plurality of material boxes 50, thereby realizing the temperature detection of the lump ores in different material boxes 50 at the same time.

[0047] According to the embodiment of the present invention, the number of the through hole 103 , the through hole 201 , the storage hole 205 and the material box 50 is set to four.

[0048] Specifically, by setting the number of through holes 103, perforations 201, storage holes 205 and material boxes 50 to 4, it only takes three times to complete the ten block ore temperature tests required by the national standard, while ensuring the accuracy and work efficiency of temperature detection, so that the thermal cracking index test can be carried out after the block ore is taken out and cooled.

[0049] The above contents are merely examples and explanations of the structure of the utility model. The technicians in this technical field may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the structure of the utility model or exceed the scope defined in the claims, they should all fall within the protection scope of the utility model.

Claims

1. An experimental device for determining the thermal cracking index of lump ore, characterized in that: include: A muffle furnace (10), wherein the muffle furnace (10) is provided with a furnace door (101) and a furnace chamber (102), and a plurality of through holes (103) are provided on the top of the muffle furnace (10); A charging mechanism (20), wherein the charging mechanism (20) is arranged in the furnace (102); The top of the loading mechanism (20) is provided with a plurality of through holes (201), the plurality of through holes (201) are arranged corresponding to the plurality of through holes (103), and a plurality of material boxes (50) are arranged inside the loading mechanism (20); A temperature measuring instrument (30) is disposed on one side of the muffle furnace (10), and a plurality of thermocouples (301) are disposed on one end of the temperature measuring instrument (30), wherein the plurality of thermocouples (301) are penetrated through the plurality of through holes (103) and extend into the furnace (102); A temperature controller (40) is also provided on one side of the muffle furnace (10).

2. The experimental device for determining the thermal cracking index of lump ore according to claim 1, characterized in that: The loading mechanism (20) is a loading rack (202).

3. The experimental device for determining the thermal cracking index of lump ore according to claim 2, characterized in that: The loading rack (202) is provided with supporting legs (203) on both sides, and a storage plate (204) is provided in the middle between the supporting legs (203) on both sides. The storage plate (204) is provided with a plurality of storage holes (205), and a plurality of material boxes (50) are correspondingly arranged in the plurality of storage holes (205).

4. The experimental device for determining the thermal cracking index of lump ore according to claim 3, characterized in that: A limiting groove (104) is provided at the bottom of the furnace (102), and the supporting legs (203) on both sides are arranged in the limiting groove (104).

5. The experimental device for measuring the thermal cracking index of lump ore according to any one of claims 3 or 4, characterized in that: A cover plate (206) is detachably provided on the top of the loading rack (202), and a plurality of the through holes (201) are provided on the cover plate (206).

6. The experimental device for determining the thermal cracking index of lump ore according to claim 5, characterized in that: The number of the through hole (103), the through hole (201), the storage hole (205) and the material box (50) is set to four.

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