Slag stopping cone

Abstract

The utility model relates to a slag stopping cone which comprises a body, a guide rod, a core rod and a compensation block. A plurality of flow guide grooves are formed in the outer wall of the body, a through hole is formed in the middle of the lower portion of the body, a cavity which is communicated with the through hole and penetrates through the body is formed in the middle of the upper portion of the body, the guide rod is arranged on the lower portion of the through hole, and the compensation block matched with the cavity is arranged in the cavity. The core rod sequentially penetrates through the middle of the body, the middle of the compensation block and the middle of the guide rod from top to bottom, and the core rod is detachably connected with the compensation block. The cavity penetrating through the body is formed in the body, the compensation block detachably connected with the core rod is arranged in the cavity, and the compensation blocks made of different materials and different in height can be replaced, so that the overall density value of the slag stopping cone is adjusted, the density of the slag stopping cone is between that of molten steel and that of steel slag, and the purpose of slag stopping in the converter process is achieved. And meanwhile, tapping efficiency is improved, and steel control time is shortened.

Description

Technical Field

[0001] The utility model belongs to the technical field of converter steel tapping devices, in particular to a slag blocking cone. Background Art

[0002] The slag stopper is a commonly used device for tapping steel in converters. After the molten steel flows out, the slag stopper can block the tapping port, which can prevent the slag from flowing out without affecting the tapping speed too much. The normal tapping time of slag stopper operation consists of two parts: the early tapping time and the late steel control time. The early tapping time refers to the time when the slag stopper is suspended between the molten steel and the slag and does not contact the inner wall of the tapping port. The late steel control time refers to the time when the slag stopper has contacted the inner diameter of the tapping port at the end of tapping and relies on the several guide grooves of the slag stopper to discharge the molten steel into the ladle.

[0003] The density of ordinary slag stop cones is fixed when they leave the factory. If its density is too small, it is easy to drift in the molten steel, affecting the stability of steel tapping and losing the slag stop effect; if its density is too large, it will block the steel tapping port, resulting in a decrease in the early steel tapping rate and reduced steel tapping efficiency. Utility Model Content

[0004] The utility model aims to provide a slag blocking cone to solve the technical problems raised in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A slag stop cone comprises: a body, a guide rod, a core rod and a compensation block; a plurality of guide grooves are arranged on the outer wall of the body, a through hole is arranged in the middle of the lower part, a cavity is arranged in the middle of the upper part which is connected with the through hole and passes through the body, and the guide rod is arranged at the lower part of the through hole, and the compensation block matched with the guide rod is arranged inside the cavity; the core rod passes through the body, the compensation block and the middle part of the guide rod in sequence from top to bottom, and the core rod is detachably connected to the compensation block.

[0007] As a further improvement of the utility model, the core rod is a threaded steel rod, the interior of the compensation block is provided with an internal thread matching the core rod, and the core rod is connected to the compensation block through threads.

[0008] As a further improvement of the utility model, an adjustment disk is provided on the upper side wall of the main body; the guide groove includes a flow channel 1 arranged at the bottom of the adjustment disk and a flow channel 2 arranged on the side wall of the main body, and the flow channel 1 and the flow channel 2 are connected.

[0009] The beneficial effects of adopting the above technical solution are:

[0010] The utility model has a cavity running through the body, and a compensation block detachably connected to the core rod is arranged inside the cavity. The compensation blocks of different materials and different heights can be replaced, so as to adjust the density value of the slag stop cone as a whole, so that its density is between molten steel and slag, so as to achieve the purpose of slag stop during converter operation, and at the same time improve the steel tapping efficiency and reduce the steel control time. In addition, the utility model can shorten the steel control time from 2 minutes to 40 seconds by determining the appropriate steel guide groove size and adjusting the slag stop cone density, and shorten the smelting cycle to about 80 seconds, which greatly improves the smelting efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0012] Figure 2 It is a cross-sectional view of the utility model;

[0013] Markings in the figure: 1 body, 2 guide rod, 3 core rod, 4 compensation block, 5 cavity, 6 adjustment disk, 7 flow channel one, 8 flow channel two. DETAILED DESCRIPTION

[0014] In order to better understand the purpose, structure and function of the present invention, the present invention is described clearly and completely below in conjunction with the accompanying drawings.

[0015] like Figure 1-Figure 2 The slag-blocking cone shown in the figure comprises: a body 1, a guide rod 2, a core rod 3 and a compensation block 4; the body 1 is in the shape of a truncated cone that is wide at the top and narrow at the bottom. The upper length of the body 1 in this embodiment is 270mm and the height is 200mm. A plurality of guide grooves are arranged on the outer wall of the body 1, and the depth of the guide grooves is deepened from 15mm to 25-30mm. A through hole is arranged in the middle of the lower part of the body 1, and the guide rod 2 is arranged at the lower part of the through hole, that is, the slag-blocking cone is a split slag-blocking cone, and the top of the guide rod 2 contacts the step between the through hole and the body 1, as shown in FIG. Figure 2 As shown, the guide rod 2 is a hollow structure made of refractory material and can be formed by casting. Its length is 1000mm and its diameter is 50mm. A cavity 5 is provided in the middle of the upper part of the main body 1, which is connected to the through hole and passes through the main body 1, and the interior of the cavity 5 is provided with the compensation block 4 matched therewith; the core rod 3 passes through the main body 1, the compensation block 4 and the middle of the guide rod 2 from top to bottom in sequence, and the core rod 3 is detachably connected to the compensation block 4, and the length of the core rod 3 is 1400mm and the diameter is 12mm. Since the compensation block 4 is detachably connected to the core rod 3, the compensation blocks 4 of different materials and different heights can be replaced, thereby adjusting the overall density value of the slag stop cone so that its density is between molten steel and slag, so as to achieve the purpose of slag stop during the converter, while improving the steel tapping efficiency and reducing the steel control time; in this embodiment, the density of the slag stop cone is adjusted to 3.8-4.2t / m 3.

[0016] The core rod 3 is made of metal material to increase the overall weight and adjust the overall center of gravity to the middle of the main body 1. Generally, the core rod 3 is a threaded steel rod. In this case, the compensation block 4 is provided with a matching internal thread. The core rod 3 and the compensation block 4 are connected by threads, and the disassembly and replacement between the core rod 3 and the compensation block 4 are achieved by threaded connection.

[0017] In order to increase the contact volume between the slag stop cone and the molten steel and adjust the gravity of the slag stop cone, in this embodiment, an adjustment disk 6 is provided on the upper side wall of the body 1; the guide groove includes a flow channel 1 7 provided at the bottom of the adjustment disk 6 and a flow channel 2 8 provided on the side wall of the body 1, and the flow channel 1 7 is connected to the flow channel 2 8. When the slag stop cone contacts the steel outlet at a later stage, the molten steel can flow from the flow channel 1 7 and the flow channel 2 8 to the ladle.

[0018] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A slag blocking cone, characterized in that: It includes: A body (1), a guide rod (2), a core rod (3) and a compensation block (4); a plurality of guide grooves are provided on the outer wall of the body (1); a through hole is provided in the middle of the lower part; a cavity (5) is provided in the middle of the upper part and is communicated with the through hole and passes through the body (1); the guide rod (2) is provided at the lower part of the through hole; the compensation block (4) matched with the guide rod (2) is provided inside the cavity (5); the core rod (3) passes through the middle of the body (1), the compensation block (4) and the guide rod (2) in sequence from top to bottom, and the core rod (3) and the compensation block (4) are detachably connected.

2. A slag stop cone according to claim 1, characterized in that: The core rod (3) is a threaded steel rod, and the interior of the compensation block (4) is provided with an internal thread that matches the core rod (3) and the compensation block (4) are connected via threads.

3. The slag blocking cone according to claim 1, characterized in that: An adjusting disk (6) is provided on the upper side wall of the body (1); the guide groove comprises a flow channel 1 (7) arranged at the bottom of the adjusting disk (6) and a flow channel 2 (8) arranged on the side wall of the body (1), and the flow channel 1 (7) and the flow channel 2 (8) are connected.

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