A slag sampling device and method for ladle slag and tundish covering agent

Abstract

The present invention discloses a slag sampling device for ladle slag and tundish covering agent, comprising a sampling rod, a connecting sleeve and a sampling head connected in sequence; the sampling rod comprises a hand-grip rod section and an installation sampling pipe section, a bending structure is formed between the hand-grip rod section and the installation sampling pipe section; the upper end of the connecting sleeve is arranged in the installation sampling pipe section; the sampling head is arranged at the lower end of the connecting sleeve, comprising a slag catcher and a slag storage device arranged in the slag catcher. The present invention has a certain structural strength and is a slag sampling tool for ladle slag or tundish covering agent samples that is easy to capture and grab high-temperature molten slag samples.

Description

Technical Field

[0001] The invention relates to a slag sampling technology in steelmaking, and more specifically to a slag sampling device and method for ladle slag and tundish covering agent. Background Art

[0002] During the steelmaking process, ladle slag and tundish covering are high-temperature molten slag floating on the surface of molten steel. During the steelmaking process, it is necessary to sample and analyze the ladle slag or tundish covering agent in real time in order to timely control the product quality of the production process. Both ladle slag and tundish covering agent are in a high-temperature molten state, with a temperature of more than 1400℃. There is currently no dedicated sampling tool for ladle slag and tundish covering agent.

[0003] In existing patent applications, for example, a layered slag sampling device disclosed in Chinese patent application No. 201020522275.9 is composed of a sampler and a sleeve, whose longitudinal planing surface has multiple grooves, and the sleeve is a cylindrical shell with one end completely open and the other end closed, which can obtain slag samples close to the steel slag interface layer. However, the above patent structure is still relatively complex and not conducive to operation. Summary of the invention

[0004] In view of the above-mentioned defects existing in the prior art, the object of the present invention is to provide a slag sampling device and method for ladle slag and tundish covering agent, which has a certain structural strength and is a slag sampling tool for ladle slag or tundish covering agent samples that is easy to capture and grasp high-temperature molten slag samples.

[0005] To achieve the above object, the present invention adopts the following technical solution:

[0006] In one aspect, a ladle slag and tundish covering agent slag sampling device comprises a sampling rod, a connecting sleeve and a sampling head connected in sequence;

[0007] The sampling rod comprises a hand-grip rod section and an installation sampling tube section, and a bending structure is formed between the hand-grip rod section and the installation sampling tube section;

[0008] The upper end of the connecting sleeve is arranged in the installation sampling pipe section;

[0009] The sampling head is arranged at the lower end of the connecting sleeve, and comprises a slag catcher and a slag storage device arranged in the slag catcher.

[0010] Preferably, the outer diameter of the handle bar section is in the range of 15 to 50 mm, the thickness is in the range of 2 to 10 mm, and the length is in the range of 1800 to 3000 mm.

[0011] Preferably, the inner diameter of the installation sampling pipe section is in the range of 30 to 100 mm, the wall thickness is in the range of 3 to 10 mm, and the length is 300 mm.

[0012] Preferably, the inclination angle between the hand grip section and the installation sampling tube section is in the range of 90 to 150 degrees.

[0013] Preferably, the installation sampling pipe section is provided with 2 to 5 fixing bolts.

[0014] Preferably, the connecting sleeve is arranged in the installation sampling pipe section through the fixing bolts.

[0015] Preferably, the connecting sleeve is a paper tube with an outer diameter ranging from 30 to 100 mm.

[0016] Preferably, the slag catcher is made of cast iron or refractory material into a cylindrical shape with an outer diameter ranging from 30 to 200 mm;

[0017] The lower end of the slag catcher is configured as a bell mouth, and the upper end of the slag catcher is configured as a circular ring-shaped slag storage space, and the bell mouth and the slag storage space are connected through a slag flow channel;

[0018] The diameter of the slag flow channel is in the range of 10 to 50 mm.

[0019] Preferably, the slag storage device is arranged in the slag storage space and is made of a thin plate, and the thickness of the thin plate is in the range of 1 to 5 mm;

[0020] The inner cavity of the slag storage device is set to be annular, the inner diameter of the annular is in the range of 10 to 50 mm, and the outer diameter is in the range of 20 to 150 mm;

[0021] An annular wall is provided at the inner diameter position of the circular ring, the annular wall is connected with the slag flow channel, and the height range is within 10 to 30 mm.

[0022] On the other hand, a ladle slag and tundish covering agent slag sampling method is provided, wherein the ladle slag and tundish covering agent slag sampling device is used for sampling, the sampling head is installed at the lower end of the connecting sleeve, the upper end of the connecting sleeve is inserted into the installation sampling pipe section, and is tightened and fixed by the fixing bolt;

[0023] When sampling, the operator holds the hand-held rod section, extends the sampling head into the slag surface at the desired sampling position, and uses the bell mouth in the slag catcher to send the liquid slag into the slag storage device through the slag flow channel. After the sampling head remains on the slag surface for several seconds, the sampling head is lifted up to complete the sampling work.

[0024] The present invention provides a slag sampling device and method for ladle slag and tundish covering agent, which has the following beneficial effects:

[0025] 1) The ladle slag and tundish covering agent slag sampling device of the present invention has a simple structure, low cost and convenient operation;

[0026] 2) The bell mouth design of the slag catcher in the ladle slag and tundish covering agent slag sampling device of the present invention can accurately locate the position where the slag sample is to be taken by aligning the bell mouth with the position where the slag is to be taken when catching the slag;

[0027] 3) The annular slag storage device of the slag catcher in the ladle slag and tundish covering agent slag sampling device of the present invention is designed, and the internal height of the slag storage device is equivalent to the thickness of the slag layer. The liquid slag enters the slag storage device through the slag flow channel. When the slag is full, the molten steel will not flow in again, and the molten steel and slag are separated when the slag is taken. The slag storage device is independently designed, and after the slag is taken and the slag sample is taken, the slag storage device can be replaced and reused. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the structure of the slag sampling device for ladle slag and tundish covering agent of the present invention;

[0029] Figure 2 It is a schematic diagram of the structure of the slag catcher in the slag sampling device for ladle slag and tundish covering agent of the present invention;

[0030] Figure 3 The present invention is a schematic diagram of the structure of the slag storage device in the slag sampling device for the ladle slag and the tundish covering agent. DETAILED DESCRIPTION

[0031] In order to better understand the above technical solution of the present invention, the technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] Please combine Figures 1 to 3 As shown, a ladle slag and tundish covering agent slag sampling device provided by the present invention comprises a sampling rod 1, a connecting sleeve 2 and a sampling head 3 which are connected in sequence.

[0033] The sampling rod 1 is made of a steel pipe, and comprises a hand-grip rod section 101 and an installation sampling tube section 102 .

[0034] The outer diameter of the handle section 101 is in the range of 15 to 50 mm, the thickness is in the range of 2 to 10 mm, and the length is in the range of 1800 to 3000 mm.

[0035] The inner diameter of the installation sampling pipe section 102 is within the range of 30 to 100 mm, the wall thickness is within the range of 3 to 10 mm, and the length is 300 mm.

[0036] The inclination angle between the hand-grip rod section 101 and the installation sampling pipe section 102 is within a range of 90 to 150 degrees.

[0037] The sampling pipe section 102 is provided with 2 to 5 fixing bolts 4 .

[0038] The connecting sleeve 2 is made of a paper tube with an outer diameter ranging from 30 to 100 mm. The upper end of the connecting sleeve 2 is inserted into the sampling pipe section 102 and fixed by 2 to 5 fixing bolts 4. The sampling head 3 is installed at the lower end of the connecting sleeve 2.

[0039] The sampling head 3 includes a slag catcher 301 and a slag storage container 302 disposed in the slag catcher 301 .

[0040] The slag catcher 301 is cylindrical and made of cast iron or refractory material, and has an outer diameter ranging from 30 to 200 mm.

[0041] The inner lower end of the slag catcher 301 is configured as a bell mouth 5 , and the inner upper end is configured as a circular ring-shaped slag storage space 6 . The bell mouth 5 and the slag storage space 6 are connected via a slag flow channel 7 .

[0042] The diameter of the slag flow channel 7 is in the range of 10 to 50 mm.

[0043] The slag storage device 302 is installed in the slag storage space 6 and is made of a thin plate with a thickness ranging from 1 to 5 mm.

[0044] The inner cavity of the slag storage container 302 is set to be annular, and the inner diameter of the annular is in the range of 10 to 50 mm, and the outer diameter is in the range of 20 to 150 mm.

[0045] An annular wall 8 is provided on the inner diameter of the circular ring 302 . The annular wall 8 is connected to the slag flow channel 7 , and the height range is within 10 to 30 mm.

[0046] The present invention also provides a method for sampling ladle slag and tundish covering agent slag, wherein the ladle slag and tundish covering agent slag sampling device of the present invention is used for sampling, a sampling head 3 is installed at the lower end of a connecting sleeve 2, the upper end of the connecting sleeve 2 is inserted into the installation sampling pipe section 102, and is tightened and fixed by a fixing bolt 4;

[0047] When sampling, the operator holds the handle section 101, extends the sampling head 3 into the slag surface at the desired sampling position, and uses the bell mouth 5 in the slag catcher 301 to send the liquid slag into the slag storage container 301 through the slag flow channel 7. After the sampling head 3 remains on the slag surface for a few seconds, the sampling head 3 is lifted up to complete the sampling work.

[0048] Example 1

[0049] The present embodiment provides a ladle slag and tundish covering agent slag sampling device, comprising a sampling rod 1, a connecting sleeve 2 and a sampling head 3 which are connected in sequence.

[0050] The sampling rod 1 is made of a steel pipe, and comprises a hand-grip rod section 101 and an installation sampling tube section 102 .

[0051] The outer diameter of the handle section 101 is 15 mm, the thickness is 2 mm, and the length is 1800 mm.

[0052] The installation sampling pipe section 102 has an inner diameter of 30 mm, a wall thickness of 3 mm, and a length of 300 mm.

[0053] The inclination angle between the hand-grip rod section 101 and the installation sampling pipe section 102 is 90°.

[0054] Two fixing bolts 4 are provided on the installation sampling pipe section 102 .

[0055] The connecting sleeve 2 is made of a paper tube with an outer diameter of 30 mm. The upper end of the connecting sleeve 2 is inserted into the sampling pipe section 102 and fixed by two fixing bolts 4. The sampling head 3 is installed at the lower end of the connecting sleeve 2.

[0056] The sampling head 3 includes a slag catcher 301 and a slag storage container 302 disposed in the slag catcher 301 .

[0057] The slag catcher 301 is cylindrical and made of cast iron or refractory material, and has an outer diameter of 30 mm.

[0058] The inner lower end of the slag catcher 301 is configured as a bell mouth 5 , and the inner upper end is configured as a circular ring-shaped slag storage space 6 . The bell mouth 5 and the slag storage space 6 are connected via a slag flow channel 7 .

[0059] The diameter of the slag flow channel 7 is 10 mm.

[0060] The slag storage device 302 is installed in the slag storage space 6 and is made of a thin plate with a thickness of 1 mm.

[0061] The inner cavity of the slag storage container 302 is set to be annular, and the inner diameter of the annular is 10 mm and the outer diameter is 20 mm.

[0062] An annular wall 8 is provided on the inner diameter of the circular ring 302 . The annular wall 8 is connected to the slag flow channel 7 and has a height of 10 mm.

[0063] The ladle slag and tundish covering agent slag sampling device of this embodiment is used for sampling. The sampling head 3 is installed at the lower end of the connecting sleeve 2, and the upper end of the connecting sleeve 2 is inserted into the installation sampling pipe section 102 and is tightened and fixed by two fixing bolts 4;

[0064] When sampling, the operator holds the handle section 101, extends the sampling head 3 into the slag surface at the desired sampling position, and uses the bell mouth 5 in the slag catcher 301 to send the liquid slag into the slag storage container 301 through the slag flow channel 7. After the sampling head 3 remains on the slag surface for 1 second, the sampling head 3 is lifted up to complete the sampling work.

[0065] Example 2

[0066] The present embodiment provides a ladle slag and tundish covering agent slag sampling device, comprising a sampling rod 1, a connecting sleeve 2 and a sampling head 3 which are connected in sequence.

[0067] The sampling rod 1 is made of a steel pipe, and comprises a hand-grip rod section 101 and an installation sampling tube section 102 .

[0068] The outer diameter of the handle section 101 is 32.5 mm, the thickness is 6 mm, and the length is 2400 mm.

[0069] The installation sampling pipe section 102 has an inner diameter of 65 mm, a wall thickness of 6.5 mm, and a length of 300 mm.

[0070] The inclination angle between the hand-grip rod section 101 and the installation sampling pipe section 102 is 120°.

[0071] Four fixing bolts 4 are provided on the installation sampling pipe section 102 .

[0072] The connecting sleeve 2 is made of a paper tube with an outer diameter of 65 mm. The upper end of the connecting sleeve 2 is inserted into the sampling pipe section 102 and fixed by four fixing bolts 4. The sampling head 3 is installed at the lower end of the connecting sleeve 2.

[0073] The sampling head 3 includes a slag catcher 301 and a slag storage container 302 disposed in the slag catcher 301 .

[0074] The slag catcher 301 is cylindrical and made of cast iron or refractory material, and has an outer diameter of 115 mm.

[0075] The inner lower end of the slag catcher 301 is configured as a bell mouth 5 , and the inner upper end is configured as a circular ring-shaped slag storage space 6 . The bell mouth 5 and the slag storage space 6 are connected via a slag flow channel 7 .

[0076] The diameter of the slag flow channel 7 is 30 mm.

[0077] The slag storage device 302 is installed in the slag storage space 6 and is made of a thin plate with a thickness of 3 mm.

[0078] The inner cavity of the slag storage container 302 is set to be annular, and the inner diameter of the annular is 30mm and the outer diameter is 85mm.

[0079] An annular wall 8 is provided on the inner diameter of the circular ring 302 . The annular wall 8 is connected to the slag flow channel 7 and has a height of 20 mm.

[0080] The ladle slag and tundish covering agent slag sampling device of this embodiment is used for sampling. The sampling head 3 is installed at the lower end of the connecting sleeve 2, and the upper end of the connecting sleeve 2 is inserted into the installation sampling pipe section 102 and is tightened and fixed by four fixing bolts 4;

[0081] When sampling, the operator holds the handle section 101, extends the sampling head 3 into the slag surface at the desired sampling position, and uses the bell mouth 5 in the slag catcher 301 to send the liquid slag into the slag storage container 301 through the slag flow channel 7. After the sampling head 3 remains on the slag surface for a few seconds, the sampling head 3 is lifted up to complete the sampling work.

[0082] Example 3

[0083] The present embodiment provides a ladle slag and tundish covering agent slag sampling device, comprising a sampling rod 1, a connecting sleeve 2 and a sampling head 3 which are connected in sequence.

[0084] The sampling rod 1 is made of a steel pipe, and comprises a hand-grip rod section 101 and an installation sampling tube section 102 .

[0085] The outer diameter of the handle section 101 is 50 mm, the thickness is 10 mm, and the length is 3000 mm.

[0086] The installation sampling pipe section 102 has an inner diameter of 100 mm, a wall thickness of 10 mm, and a length of 300 mm.

[0087] The inclination angle between the hand-grip rod section 101 and the installation sampling pipe section 102 is 150°.

[0088] Five fixing bolts 4 are provided on the installation sampling pipe section 102 .

[0089] The connecting sleeve 2 is made of a paper tube with an outer diameter of 100 mm. The upper end of the connecting sleeve 2 is inserted into the sampling pipe section 102 and fixed by five fixing bolts 4. The sampling head 3 is installed at the lower end of the connecting sleeve 2.

[0090] The sampling head 3 includes a slag catcher 301 and a slag storage container 302 disposed in the slag catcher 301 .

[0091] The slag catcher 301 is cylindrical and made of cast iron or refractory material, and has an outer diameter of 200 mm.

[0092] The inner lower end of the slag catcher 301 is configured as a bell mouth 5 , and the inner upper end is configured as a circular ring-shaped slag storage space 6 . The bell mouth 5 and the slag storage space 6 are connected via a slag flow channel 7 .

[0093] The diameter of the slag flow channel 7 is 50 mm.

[0094] The slag storage device 302 is installed in the slag storage space 6 and is made of a thin plate with a thickness of 5 mm.

[0095] The inner cavity of the slag storage container 302 is set to be annular, and the inner diameter of the annular is 50mm and the outer diameter is 150mm.

[0096] An annular wall 8 is provided on the inner diameter of the circular ring 302 . The annular wall 8 is connected to the slag flow channel 7 and has a height of 30 mm.

[0097] The ladle slag and tundish covering agent slag sampling device of this embodiment is used for sampling. The sampling head 3 is installed at the lower end of the connecting sleeve 2, and the upper end of the connecting sleeve 2 is inserted into the installation sampling pipe section 102 and is tightened and fixed by 5 fixing bolts 4;

[0098] When sampling, the operator holds the handle section 101, extends the sampling head 3 into the slag surface at the desired sampling position, and uses the bell mouth 5 in the slag catcher 301 to send the liquid slag into the slag storage container 301 through the slag flow channel 7. After the sampling head 3 remains on the slag surface for 1 second, the sampling head 3 is lifted up to complete the sampling work.

[0099] Those skilled in the art should recognize that the above embodiments are only used to illustrate the present invention, and are not intended to limit the present invention. As long as they are within the spirit of the present invention, any changes or modifications to the above embodiments will fall within the scope of the claims of the present invention.

Claims

1. A slag sampling device for ladle slag and tundish covering agent, characterized in that: It includes a sampling rod, a connecting sleeve and a sampling head which are connected in sequence; The sampling rod comprises a hand-grip rod section and an installation sampling tube section, and a bending structure is formed between the hand-grip rod section and the installation sampling tube section; The upper end of the connecting sleeve is arranged in the installation sampling pipe section; The sampling head is arranged at the lower end of the connecting sleeve, and comprises a slag catcher and a slag storage device arranged in the slag catcher. The slag catcher is made of cast iron or refractory material and is cylindrical with an outer diameter ranging from 30 to 200 mm; The lower end of the slag catcher is configured as a bell mouth, and the upper end of the slag catcher is configured as a circular ring-shaped slag storage space, and the bell mouth and the slag storage space are connected through a slag flow channel; The diameter of the slag flow channel ranges from 10 to 50 mm. The slag storage device is arranged in the slag storage space and is made of a thin plate, and the thickness of the thin plate ranges from 1 to 5 mm; The inner cavity of the slag storage device is set to be annular, the inner diameter of the annular is in the range of 10 to 50 mm, and the outer diameter is in the range of 20 to 150 mm; An annular wall is provided at the inner diameter position of the circular ring, the annular wall is connected with the slag flow channel, and the height range is within 10 to 30 mm.

2. The ladle slag and tundish covering agent slag sampling device according to claim 1, characterized in that: The outer diameter of the handle bar section is in the range of 15 to 50 mm, the thickness is in the range of 2 to 10 mm, and the length is in the range of 1800 to 3000 mm.

3. The ladle slag and tundish covering agent slag sampling device according to claim 1, characterized in that: The inner diameter of the installation sampling pipe section is within the range of 30 to 100 mm, the wall thickness is within the range of 3 to 10 mm, and the length is 300 mm.

4. The ladle slag and tundish covering agent slag sampling device according to claim 1, characterized in that: The inclination angle between the hand-grip rod section and the installation sampling pipe section is within a range of 90 to 150 degrees.

5. The ladle slag and tundish covering agent slag sampling device according to claim 1, characterized in that: The installation sampling pipe section is provided with 2 to 5 fixing bolts.

6. The ladle slag and tundish covering agent slag sampling device according to claim 5, characterized in that: The connecting sleeve is arranged in the installation sampling pipe section through the fixing bolts.

7. The ladle slag and tundish covering agent slag sampling device according to claim 1, characterized in that: The connecting sleeve is a paper tube with an outer diameter ranging from 30 to 100 mm.

8. A method for sampling ladle slag and tundish covering agent, characterized in that: The ladle slag and tundish covering agent slag sampling device according to any one of claims 1 to 7 is used for sampling, the sampling head is installed at the lower end of the connecting sleeve, the upper end of the connecting sleeve is inserted into the installation sampling pipe section, and is tightened and fixed by fixing bolts; When sampling, the operator holds the hand-held rod section, extends the sampling head into the slag surface at the desired sampling position, and uses the bell mouth in the slag catcher to send the liquid slag into the slag storage device through the slag flow channel. After the sampling head remains on the slag surface for several seconds, the sampling head is lifted up to complete the sampling work.

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