Guiding type slag stopping ball

Abstract

The utility model relates to the technical field of converter tapping slag stopping, and particularly discloses a guide type slag stopping ball which comprises a slag stopping ball body and a guide rod, the inside of the guide rod is fixedly connected with deformed steel bar with the upper end extending to the outside of the guide rod, and the outside of the slag stopping ball body is sleeved with a first lantern ring and a second lantern ring which are symmetrically distributed. The second lantern ring is located below the first lantern ring, the inner wall of the first lantern ring and the inner wall of the second lantern ring are fixedly connected with a plurality of limiting plugging blocks matched with the flow guide grooves, and a plurality of evenly-distributed through holes are formed in the outer wall of the second lantern ring. By means of the special shape and structural design of the slag stopping ball, the defects that the slag stopping hit rate of the slag stopping ball is low and the slag stopping plug turns over and floats in the slag stopping process are overcome, the slag stopping success rate can reach 98% or above, the slag stopping effect is good, the slag stopping effect is good, and the service life of the slag stopping ball and the slag stopping plug is prolonged. Consumption of a steelmaking deoxidizer is reduced, and the steelmaking cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to converter tapping slag blocking technology field, specifically disclose a kind of guiding type slag ball. BACKGROUND

[0002] Tapping slag blocking is to keep the maximum slag in the furnace by certain method, to reduce the converter high oxidizing final slag in tapping process into ladle. And reduce the converter tapping slag quantity is an important aspect to improve the quality of molten steel. In the process of converter tapping, the slag blocking operation can not only stabilize the chemical composition of molten steel, but also reduce the inclusions in steel, improve the cleanliness of molten steel, and can reduce ladle slag, extend the service life of ladle. At the same time, it can also reduce refractory material, and correspondingly improve the service life of converter tapping port refractory material, and provide good conditions for molten steel refining.

[0003] But the main method of slag blocking ball and slag blocking plug (cone) is widely used at present, and the advantages of slag blocking ball are low cost, simple operation. The disadvantage is that the hit rate of ball is low, and the slag blocking ball usually reaches the tapping hole in the form of following the flow. However, due to the high viscosity of steel slag, the slag blocking ball sometimes cannot reach the tapping hole smoothly, or cannot effectively block the tapping hole when the molten steel flows out. In addition, due to the complete falling of circular slag blocking ball on the tapping hole, the probability of premature blocking of tapping hole is significantly increased, which reduces the molten steel yield, and the effect of slag blocking is general.

[0004] The advantages of slag blocking plug (cone) are that the tapping car is put into the tapping hole, and the lower part is a guide rod, so that the slag blocking plug can automatically and accurately reach the predetermined position. Because the cone body has a groove, the vortex is suppressed, and when the slag blocking plug blocks the tapping hole, the residual steel can still flow into the ladle through the groove, so that the molten steel yield is improved. The disadvantage is that the guide rod is melted during tapping, and the upper cone body is easy to be turned over. On the other hand, when the service life of tapping hole reaches the later stage, the inner hole vortex increases, and the slag blocking cone is easy to be turned over and float, so that the probability of slag blocking failure increases. CONTENT OF UTILITY MODEL

[0005] The utility model provides a kind of guiding type slag ball, which can accurately put the slag blocking ball into the tapping hole by guide rod cooperation, and the lower longitudinal groove can be blocked by limiting blocking block after the molten steel is discharged, to prevent smaller steel slag from entering the ladle through the flow guide groove.

[0006] The utility model discloses a kind of guide type slag ball, including slag ball body and guide rod, the outer wall of the slag ball body is equipped with flow guide groove, the inside fixed connection of the guide rod has the threaded steel extending to the outside of guide rod upper end, the outer wall of the threaded steel is provided with nut, the outside of the slag ball body is equipped with the first sleeve ring and second sleeve ring of symmetrical distribution, the second sleeve ring is below the first sleeve ring, the inner wall of the first sleeve ring and second sleeve ring is all fixedly connected with multiple limit plugging blocks matched with flow guide groove, the outer wall of the second sleeve ring is equipped with multiple evenly distributed through holes, the outer wall of the first sleeve ring and second sleeve ring is all fixedly connected with two symmetrically distributed ear plates, two ear plates on the same side are fixedly connected by bolt.

[0007] In order to facilitate the converter inside molten steel is exhausted, as a kind of guide type slag ball of the utility model preferably, the flow guide groove includes eight longitudinal grooves, and a transverse groove is arranged along the diameter direction, and the longitudinal grooves and the transverse groove are mutually penetrated.

[0008] In order to facilitate the installation guide rod, as a kind of guide type slag ball of the utility model preferably, the inside of the slag ball body is equipped with center hole, and the lower end of the slag ball body is equipped with mounting hole.

[0009] In order to prevent slag ball body from being melted and damaged, as a kind of guide type slag ball of the utility model preferably, the material of the slag ball body is refractory material, and the main component MgO is greater than or equal to 75%.

[0010] In order to prevent guide rod from being melted and damaged, as a kind of guide type slag ball of the utility model preferably, the guide rod is refractory mud.

[0011] In order to prevent nut, threaded steel and bolt from being melted and damaged, as a kind of guide type slag ball of the utility model preferably, the material of the nut, threaded steel and bolt is all refractory steel.

[0012] Compared with the prior art, the utility model has the advantages that:

[0013] The guide type slag ball, when molten steel is exhausted, the slag ball body loses buoyancy, and then moves downward, so that the limit plugging block in the inner wall of the second sleeve ring blocks the lower longitudinal groove, and the through hole is blocked by the slag ball body, to prevent steel slag from entering the ladle, the unique shape and structure design of the utility model make up for the low hit rate of the slag ball and the phenomenon of slag blocking cone and floating, and the success rate of slag blocking can reach more than 98%, which saves the consumption of steel deoxidizer and reduces the cost of steelmaking. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is the overall structure diagram of the utility model a kind of guide type slag ball;

[0015] Figure 2 It is the structure view of the first sleeve ring and the second sleeve ring of the utility model;

[0016] Figure 3 It is the front view of the slag stopping ball body of the utility model;

[0017] Figure 4 It is the top view of the slag stopping ball body of the utility model.

[0018] In the figure, 1, the slag stopping ball body;2, the guide rod;3, the flow guide groove;301, the longitudinal groove;302, the transverse groove;4, the nut;5, the threaded steel;6, the first sleeve ring;7, the second sleeve ring;8, the limiting plugging block;9, the through hole;10, the ear plate;11, the bolt;12, the center hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantage of the utility model more clearly, the following is combined with the drawing and example, and the utility model is further described in detail.It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0020] In the description of the utility model, it should be understood that the orientation or position relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as limiting the utility model. The device or element indicated must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as limiting the utility model.In addition, in the description of the utility model, the meaning of "a plurality of" is two or more than two, unless otherwise specifically limited.

[0021] Please refer to Figures 1-4 A guide type slag stopping ball, including the slag stopping ball body 1 and the guide rod 2, the outer wall of the slag stopping ball body 1 is provided with the flow guide groove 3, the inside of the guide rod 2 is fixedly connected with the threaded steel 5 extending to the outside of the guide rod 2, the outer wall of the threaded steel 5 is provided with the nut 4, the outside of the slag stopping ball body 1 is provided with the first sleeve ring 6 and the second sleeve ring 7 distributed symmetrically, the second sleeve ring 7 is below the first sleeve ring 6, the inner wall of the first sleeve ring 6 and the second sleeve ring 7 is fixedly connected with a plurality of limiting plugging blocks 8 matched with the flow guide groove 3, the outer wall of the second sleeve ring 7 is provided with a plurality of evenly distributed through holes 9, the outer wall of the first sleeve ring 6 and the second sleeve ring 7 is fixedly connected with two symmetrically distributed ear plates 10, and the two ear plates 10 on the same side are fixedly connected through the bolt 11.

[0022] In the embodiment: the slag stopping ball body 1 is aligned with the converter tapping hole through the slag stopping car gripper, the slag stopping car gripper is loosened, the slag stopping ball body 1 is accurately added into the tapping hole, the specific gravity of the slag stopping ball body 1, the first sleeve ring 6 and the second sleeve ring 7 is between the specific gravity of molten steel and the specific gravity of slag, when the converter molten steel is tapped out, the slag stopping ball body 1 and the first sleeve ring 6 and the second sleeve ring 7 sink automatically, the second sleeve ring 7 sinks to the converter bottom plate first, and the molten steel can continue to be discharged from the tapping hole through the through hole 9, when the molten steel is tapped out, the slag stopping ball body 1 loses buoyancy and moves downward, so that the limiting stop block 8 on the inner wall of the second sleeve ring 7 blocks the lower longitudinal groove 301, and the through hole 9 is blocked through the slag stopping ball body 1, so that the slag is prevented from entering the ladle, the special shape and structure design of the utility model make up for the low hit rate of the slag stopping ball and the slag stopping plug (cone) turning cone and floating phenomenon, the success rate of slag stopping can reach more than 98%, the consumption of steelmaking deoxidizer is saved, and the steelmaking cost is reduced.

[0023] As a technical optimization scheme of the utility model, the flow guide groove 3 includes eight longitudinal grooves 301 and a transverse groove 302 arranged along the diameter direction, and the plurality of longitudinal grooves 301 and the transverse groove 302 are mutually penetrated.

[0024] In the embodiment: by penetrating the plurality of longitudinal grooves 301 and the transverse groove 302, the molten steel is conveniently discharged from the converter along the flow guide groove 3.

[0025] As a technical optimization scheme of the utility model, the inside of the slag stopping ball body 1 is provided with a center hole 12, and the lower end of the slag stopping ball body 1 is provided with a mounting hole.

[0026] In the embodiment: by penetrating the center hole 12 in the inside of the slag stopping ball body 1 and providing the mounting hole in the lower end of the slag stopping ball body 1, the guide rod 2 is conveniently mounted.

[0027] As a technical optimization scheme of the utility model, the material of the slag stopping ball body 1 is refractory material, and the main component is MgO≥75%.

[0028] In the embodiment: by setting the material of the slag stopping ball body 1 as refractory material, the slag stopping ball body 1 is prevented from being melted and damaged.

[0029] As a technical optimization scheme of the utility model, the guide rod 2 is refractory mud.

[0030] In the embodiment: by setting the guide rod 2 as refractory mud material, the guide rod 2 is prevented from being melted and damaged.

[0031] As a technical optimization scheme of the utility model, the materials of the nut 4, the threaded steel 5 and the bolt 11 are all refractory steel.

[0032] In the embodiment, the nut 4, the threaded steel 5 and the bolt 11 are all made of fire-resistant steel, so that the nut 4, the threaded steel 5 and the bolt 11 are prevented from being melted and damaged.

[0033] The working principle and use process of the utility model are as follows:

[0034] When assembling the slag stopping ball, first, the first sleeve ring 6 and the second sleeve ring 7 are respectively sleeved on the upper and lower sides of the slag stopping ball body 1, the limiting plugging block 8 is aligned with the longitudinal groove 301, then the first sleeve ring 6 and the second sleeve ring 7 are fixed through the bolt 11, the upper end of the threaded steel 5 is inserted into the center hole 12, then the nut 4 is screwed, then the nut 4 and the threaded steel 5 are welded, so that the slag stopping ball body 1 and the guide rod 2 are prevented from moving axially.

[0035] In use, the guide type slag stopping ball is clamped on the clamp of the slag stopping car, the threaded steel 5 on the upper part of the guide rod 2 is clamped, the guide type slag stopping ball is added at the late stage of the converter tapping, when the remaining steel liquid in the converter is about one third, the guide type slag stopping ball is accurately added into the tapping hole by loosening the clamp button of the slag stopping car, because the specific gravities of the slag stopping ball body 1, the first sleeve ring 6 and the second sleeve ring 7 are between the specific gravities of the steel liquid and the slag, when the converter steel liquid is about to be exhausted, the slag stopping ball body 1 and the first sleeve ring 6 and the second sleeve ring 7 automatically sink, the second sleeve ring 7 first sinks to the converter bottom plate, the steel liquid can continue to be discharged from the tapping hole through the through hole 9, when the steel liquid is exhausted, the slag stopping ball body 1 loses buoyancy and moves downward, so that the limiting plugging block 8 on the inner wall of the second sleeve ring 7 blocks the lower longitudinal groove 301, and the through hole 9 is blocked by the slag stopping ball body 1, so that the slag is prevented from entering the ladle, after the converter tapping is completed, the converter is shaken to check the position of the tapping hole, if the guide type slag stopping ball does not automatically fall off, the guide type slag stopping ball remaining in the tapping hole can be knocked off by using a steel pipe.

[0036] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, any modification, equivalent replacement and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A piloted cinder ball comprising a cinder ball body (1) and a pilot rod (2), characterized in that: The outer wall of the slag stopping ball body (1) is provided with a flow guide groove (3), the inside of the guide rod (2) is fixedly connected with a threaded steel (5) extending to the outside of the guide rod (2), the outer wall of the threaded steel (5) is provided with a nut (4), the outside of the slag stopping ball body (1) is sleeved with a first sleeve ring (6) and a second sleeve ring (7) symmetrically distributed, the second sleeve ring (7) is below the first sleeve ring (6), the inner walls of the first sleeve ring (6) and the second sleeve ring (7) are fixedly connected with a plurality of limiting plugging blocks (8) matched with the flow guide groove (3), the outer wall of the second sleeve ring (7) is provided with a plurality of uniformly distributed through holes (9), the outer walls of the first sleeve ring (6) and the second sleeve ring (7) are fixedly connected with two symmetrically distributed ear plates (10), and the two ear plates (10) on the same side are fixedly connected through bolts (11).

2. A pilot-type ball according to claim 1, wherein: The flow guide groove (3) comprises eight longitudinal grooves (301) and a transverse groove (302) arranged in the diameter direction, and the plurality of longitudinal grooves (301) and the transverse groove (302) are mutually penetrated.

3. A pilot-type cinder ball according to claim 1, characterized in that: The inside of the slag stopping ball body (1) is provided with a center hole (12) penetratingly, and the lower end of the slag stopping ball body (1) is provided with a mounting hole.

4. A pilot-type ball according to claim 1, wherein: The guide rod (2) is refractory clay.

5. A pilot-type ball according to claim 1, wherein: The materials of the nut (4), the threaded steel (5) and the bolt (11) are all refractory steel.

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