Device for taking slag sample from tapping platform to hot-metal bottle

Abstract

The utility model relates to a device for taking a slag sample from an iron tapping platform to a molten iron tank, which belongs to a molten iron slag taking device and comprises a sampling rod and a slag catcher, the tail end of the sampling rod is detachably connected with the slag catcher, the sampling rod is of a telescopic structure or a lengthened structure, the slag catcher comprises one or more slag taking units, and the slag taking units are connected with the sampling rod. And the slag taking unit is provided with a funnel-shaped slag taking hole. The sampling rods are of a plurality of lengthened structures, the plurality of sampling rods are detachably connected end to end, and the slag catcher is detachably connected with the tail end of the tail sampling rod. The slag taking hole is provided with a vertical center line and comprises a horn hole and a straight hole, the hole diameters of the horn hole and the straight hole are gradually reduced from top to bottom, and the horn hole is vertically communicated with the straight hole. The sampling device has the advantages of being simple in structure, low in cost and easy to operate, multiple sections of sampling rods can be flexibly selected for connection sampling under the condition that the fall between the tapping platform and the upper edge of the molten iron tank is large, and the sampling distance problem is effectively solved.

Description

Technical Field

[0001] The utility model relates to a device for taking slag samples from a molten iron ladle. Background Art

[0002] During the production process of a blast furnace, it is sometimes necessary to take slag samples from a molten iron ladle in real time for analysis. For example, when using the barium oxide tracer method to measure the slag-carrying rate of molten iron, slag samples from the molten iron ladle are required. The temperatures of the molten iron and slag in the molten iron ladle are both around 1500 °C, and the tapping platform for manual operation is about 9 meters above the upper edge of the molten iron ladle. It is very difficult for those skilled in the art to take slag samples from the tapping platform to the molten iron ladle, and there is no suitable special tool for taking slag samples.

[0003] A blast furnace slag and iron sample taking tool disclosed in the patent publication number CN206945350U, which consists of a spoon body, a spoon handle and a protrusion, can take slag samples in the slag ditch in front of the furnace. This slag sample taking tool is only convenient for taking samples at close range and cannot be used for taking slag samples from the tapping platform at a high place to the molten iron ladle. Utility Model Content

[0004] The purpose of the utility model is to provide a device for taking slag samples, which is used to directly take slag samples from the tapping platform to the molten iron ladle.

[0005] The technical solution adopted by the utility model to solve the above problems is as follows: A device for taking slag samples from the tapping platform to the molten iron ladle, characterized in that: it includes a sampling rod and a slag catcher, the end of the sampling rod is detachably connected to the slag catcher, the sampling rod is a telescopic structure or an extended structure, the slag catcher includes one or more slag taking units, and the slag taking unit has a funnel-shaped slag taking hole.

[0006] Preferably, the sampling rod is a multi-piece extended structure, and the multi-piece sampling rods are detachably connected end to end, and the slag catcher is detachably connected to the end of the last sampling rod.

[0007] Preferably, one end of the sampling rod is provided with a bolt, and the other end is provided with a nut, and adjacent sampling rods are detachably connected through the bolt and the nut.

[0008] Preferably, a connecting rod is provided on the slag catcher, and the sampling rod is detachably connected to the connecting rod, and the sampling rod and the connecting rod are also connected through the bolt and the nut.

[0009] Preferably, the slag taking hole has a vertical center line, and includes a flared hole and a straight hole with the aperture gradually decreasing from top to bottom, and the flared hole and the straight hole are vertically connected.

[0010] Method for sampling slag from the tapping platform into the hot metal ladle based on the above device: When the hot metal ladle to be sampled is full and the swing nozzle swings to the other side to prepare for sampling, considering the large distance between the tapping platform and the slag surface of the hot metal ladle (about 9 m for the conventional distance), sampler A holds the upper part of the connecting rod, inserts the slag catcher into the sampling hole and keeps the connecting rod vertically upward. Sampler B takes a sampling rod and connects it to the connecting rod. After connection, sampler A continues to lower the slag catcher, and sampler B takes another sampling rod and connects it to the lowered sampling rod. According to the distance from the tapping platform to the slag surface in the hot metal ladle, the sampler flexibly selects multiple sections of sampling rods to be spliced until the slag catcher extends below the slag surface at the position to be sampled. The slag sampling hole of the slag catcher is funnel-shaped. During the process of lifting the slag catcher several seconds after it extends below the slag surface, the hot metal leaks away from the lower straight hole, while the slag adheres or hangs on the inclined surface of the trumpet hole. Sampler A gradually lifts the slag catcher through the sampling rod, and sampler B removes the sampling rods one by one until the slag catcher is lifted onto the platform. After the slag cools, the slag adhered to the slag catcher is knocked off and collected to complete the slag sampling work.

[0011] The device and method for sampling slag from the tapping platform into the hot metal ladle proposed in this application have the characteristics of simple structure, low cost and easy operation. For the situation where the drop from the tapping platform to the upper edge of the hot metal ladle is large, multiple sections of sampling rods can be flexibly selected and connected for sampling, effectively solving the sampling distance problem. In addition, the slag sampling hole of the slag catcher is funnel-shaped, and the separation of hot metal and slag can be realized when lifting from below the slag surface. Moreover, the connecting rod and the slag catcher are independently designed, and the connecting rod and the slag catcher can be replaced after taking the slag sample for repeated sampling. Description of the Drawings

[0012] Figure 1 It is a schematic diagram of the slag sampling operation in the embodiment of the present utility model;

[0013] Figure 2 It is a schematic structural diagram of the sampling device in the embodiment of the present utility model;

[0014] Figure 3 It is a schematic longitudinal sectional view of the slag catcher along the center line of the slag sampling hole in the embodiment of the present utility model;

[0015] Figure 4 It is a schematic detachable connection diagram of adjacent sampling rods in the embodiment of the present utility model;

[0016] In the figure, 1 is the sampling device, 2 is the sampling hole, 3 is the hole cover, 4 is the tapping platform, 5 is the swing nozzle, and 6 is the hot metal ladle;

[0017] Figure 2 Among them, 101 is the sampling rod, 102 is the connecting screw, 103 is the connecting rod, and 104 is the slag catcher. Detailed Embodiment

[0018] The present utility model will be further described in detail below in conjunction with the accompanying drawings. The embodiments are exemplary and are intended to explain the present utility model, and should not be construed as a limitation of the present utility model. The textual descriptions in the embodiments correspond to the accompanying drawings, and the descriptions of directions are also based on the drawings, and should not be construed as a limitation of the protection scope of the present utility model.

[0019] As Figures 1 to 4 shown, the device for taking slag samples from the tapping platform into the ladle in this embodiment includes: a sampling rod 101, a connecting screw 102, a connecting rod 103, and a slag catcher 104; the sampling rod 101 includes multiple segments, and the connection quantity is designed according to the heights of the sampling hole 2 and the ladle 6; the connecting screw 102 is arranged at the head and tail of the sampling rod 101: one end is provided with a bolt and the other end is provided with a nut.

[0020] The sampling rod 101 includes 2 to 4 segments, the length of each segment is in the range of 1500 to 2500 mm, and the outer diameter is in the range of 25 to 55 mm; the connecting screw 102 includes a bolt and a nut, which are matched with each other and are respectively welded to the head and tail ends of each segment of the sampling rod 101. In addition, the inner diameter of the nut is smaller than the outer diameter of the sampling rod and is in the range of 20 to 50 mm; the length of the connecting rod 103 is in the range of 500 to 2000 mm, and it is welded to the side of the slag catcher 104. A nut is welded to the tail of the connecting rod 103 and is matched with the bolt on the sampling rod for detachable connection.

[0021] The slag catcher 104 is a cuboid made of cast iron or refractory material, with a length in the range of 200 to 400 mm, a width in the range of 200 - 400 mm, and a thickness in the range of 3 to 10 mm; the slag catcher 104 includes four identical modules, and each single module has a funnel-shaped slag-taking hole. The upper part is a flared hole with a large upper part and a small lower part, and the lower part is a straight hole, which is vertically through. The included angle between the inclined plane of the flared hole and the horizontal plane is in the range of 30 to 60°. The sum of the blank areas of the flared holes on the upper surface of the slag catcher 104 accounts for 70% - 95% of the upper area of the slag catcher, the sum of the blank areas of the lower parts of each module accounts for 10 - 30% of the lower area of the slag catcher, and the length of the straight pipe section at the lower part of each module accounts for 10 - 30% of the thickness of the slag catcher;

[0022] Method for taking slag samples from the tapping platform into the hot metal ladle: When the hot metal ladle 6 to be sampled is full and the spout 5 is swung to the other side for sampling, considering the large distance between the tapping platform 4 and the slag surface of the hot metal ladle 6 (about 9 m in the conventional distance), the sampler A holds the upper part of the connecting rod 103, inserts the slag catcher 104 into the sampling hole 2 and keeps the connecting rod 103 vertical. The sampler B takes a sampling rod 101 and connects it to the connecting rod 103 through the connecting screw 102. After connection, the sampler A continues to lower the slag catcher 104, and the sampler B takes another sampling rod and connects it to the lowered sampling rod through the connecting screw. According to the distance from the tapping platform to the slag surface in the hot metal ladle, the sampler flexibly selects multiple sections of sampling rods to connect until the slag catcher extends below the slag surface at the position where the sample is to be taken. Each module of the slag catcher 104 is funnel-shaped. During the process of lifting the slag catcher a few seconds after it extends below the slag surface, the hot metal leaks away from below the module, while the slag adheres or hangs on the inclined surface above the module. The sampler A gradually lifts the slag catcher through the sampling rod, and the sampler B removes the sampling rods one by one until the slag catcher is lifted onto the platform. After the slag cools, the slag adhered to the slag catcher is knocked off and collected to complete the work of taking slag samples.

[0023] The above slag sampling device has the characteristics of simple structure, low cost and easy operation. For the situation where the drop from the tapping platform to the upper edge of the hot metal ladle is large, multiple sections of sampling rods can be flexibly selected to connect for sampling, effectively solving the sampling distance problem. In addition, the slag catcher is funnel-shaped, and the separation of hot metal and slag can be realized when it is lifted from below the slag surface. Moreover, the connecting rod and the slag catcher are independently designed. After taking the slag sample, the connecting rod and the slag catcher can be replaced for repeated sampling.

Claims

1. A device for taking slag samples from a tapping platform into a molten iron ladle, characterized in that: It comprises a sampling rod and a slag catcher, wherein the end of the sampling rod is detachably connected to the slag catcher, the sampling rod is a telescopic structure or an extended structure, and the slag catcher comprises one or more slag collecting units, and the slag collecting units have a funnel-shaped slag collecting hole.

2. The device for taking slag samples from the iron-discharging platform into the molten iron ladle according to claim 1, characterized in that: The sampling rods are a structure of multiple extended rods, the multiple sampling rods are detachably connected head to tail, and the slag catcher is detachably connected to the end of the last sampling rod.

3. The device for taking slag samples from the iron-discharging platform into the molten iron ladle according to claim 2, characterized in that: A bolt is arranged at one end of the sampling rod, and a nut is arranged at the other end, and adjacent sampling rods are connected detachably by the bolt and the nut.

4. The device for taking slag samples from the iron-discharging platform into the molten iron ladle according to claim 1, characterized in that: A connecting rod is arranged on the slag catcher, and the sampling rod is detachably connected to the connecting rod.

5. The device for taking slag samples from the iron-discharging platform into the molten iron ladle according to claim 1, characterized in that: The slag taking hole has a vertical center line, and comprises a trumpet hole and a straight hole whose apertures gradually decrease from top to bottom, and the trumpet hole and the straight hole are connected vertically.

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