CN215593114U

CN215593114U - Novel high-efficient molten iron desulfurization is taken off sediment device

Info

Publication number: CN215593114U
Application number: CN202121196143.6U
Authority: CN
Inventors: 印传磊; 蒋建平; 郑力宁; 杨丽梅; 翟万里; 李润
Original assignee: Jiangsu Lihuai Steel Co ltd; Jiangsu Shagang Group Huaigang Special Steel Co Ltd
Current assignee: Jiangsu Lihuai Steel Co ltd; Jiangsu Shagang Group Huaigang Special Steel Co Ltd
Priority date: 2021-05-31
Filing date: 2021-05-31
Publication date: 2022-01-21
Anticipated expiration: 2031-05-31

Abstract

The utility model discloses a novel efficient molten iron desulphurization slag removing device which comprises an arc-surface-shaped slag removing disc and a first slag removing device arm, wherein the slag removing disc is provided with a through hole, a transverse plate is fixed at the lower end of the first slag removing device arm, a first clamping strip and a second clamping strip which are parallel to the first slag removing device arm are fixedly arranged on the transverse plate, and the first clamping strip and the transverse plate penetrate through the through hole to fix the slag removing disc in an interval between the first clamping strip and the second clamping strip. The slag removing plate can remove slag in all directions in the ladle, and slag removing plates with the same width can gather more slag to be removed, so that desulfurized slag can be removed from the ladle quickly and efficiently.

Description

Novel high-efficient molten iron desulfurization is taken off sediment device

Technical Field

The utility model relates to the field of molten iron pre-desulfurization production, in particular to a novel efficient molten iron desulfurization and slagging-off device.

Background

With the development of special steel, the requirement of some special steel grades on residual sulfur of molten steel is higher and higher, and the deep desulfurization treatment of molten iron entering a furnace is a necessary link in the steelmaking production process. At present, two main methods of molten iron desulphurization are granular magnesium blowing desulphurization and KR stirring desulphurization, and both of the two methods need to remove desulphurization slag, so that the desulphurization slag is prevented from entering a smelting furnace along with molten iron to cause molten iron resulfurization, the initial sulfur content of the molten steel is high, and the aim of desulphurization cannot be achieved.

At present, the existing desulfurization slag raking device generally has the defects that the inclination angle of a slag raking arm is different from the inclination angle of a ladle, so that a gap exists between the slag raking arm and the ladle, a slag raking disc cannot rapidly rake off the desulfurization slag near the inner wall of the ladle, and even though the slag raking disc can be close to the inner wall of the ladle, the slag raking disc is square and is not matched with the inner wall of the ladle, the slag raking disc cannot be attached to the ladle wall, and the desulfurization slag on the inner wall of the ladle cannot be completely raked off in the whole process. Resulting in low desulfurization and slagging-off rate and long slagging-off time. Meanwhile, although the related documents 'development and improvement of hot metal ladle blowing auxiliary slagging process' and 'research and practice of the top blowing slagging process by the strong steel KR method' report that in order to better remove desulfurized slag, the hot metal ladle tanks are provided with blowing auxiliary slagging equipment, each hot metal ladle tank needs to be technically improved, a blowing pipeline is added, the difficulty of popularization and transportation is high, the application cost is high, and the temperature of molten iron can be reduced.

Disclosure of Invention

According to the novel efficient molten iron desulphurization slag raking device provided by the utility model, as the slag raking disc adopts the arc surface design, compared with the traditional square slag raking disc, the slag raking disc can be more attached to the wall of a molten iron ladle, the slag raking disc can carry out slag raking in all directions in the molten iron ladle, and the slag raking discs with the same width can gather more slag to be raked out, so that the desulphurization slag can be quickly and efficiently raked out of the molten iron ladle.

The technical scheme disclosed by the utility model is as follows: the utility model provides a novel high-efficient molten iron desulfurization is taken off sediment device, includes cambered surface form take off the sediment dish, takes off sediment ware arm one, has the through-hole on the dish of taking off the sediment, and the lower extreme of taking off sediment ware arm one is fixed with the diaphragm, and fixed mounting has the card strip one, card strip two with taking off sediment ware arm parallel arrangement on the diaphragm, and card strip one, diaphragm pass behind the through-hole will take off the sediment dish and fix in the interval between card strip one and card strip two.

On the basis of the scheme, the slag removing disc is preferably in interference fit with the first clamping strip and the second clamping strip.

On the basis of the scheme, preferably, the back surface of the slag removing disc is provided with a groove, the groove is communicated with the through hole, and the first clamping strip is clamped in the groove.

In addition to the above, preferably, the through hole is a rectangular hole.

On the basis of the scheme, preferably, the upper end of the first slag skimmer arm is fixedly connected with a second slag skimmer arm, the second slag skimmer arm is axially and horizontally arranged, and an included angle is formed between the second slag skimmer arm and the first slag skimmer arm.

On the basis of the scheme, preferably, the upper end of the first slag skimmer arm is fixedly arranged on a driven gear, the driven gear is meshed with a driving gear, the driving gear is fixed on an output shaft of a motor, and the driven gear is rotatably connected with a second slag skimmer arm.

Compared with the prior art, the utility model has the following beneficial effects:

the angle of the slag raker arm and the shape of the slag raking disc are changed, so that the desulfurized slag can be quickly raked from the ladle, the slag raking rate reaches over 99 percent, the iron loss in the slag raking process can be reduced, and the slag raking time is shortened by half. The sulfur return amount of the molten iron is less than 0.003 percent, and the initial sulfur content of the molten steel is further reduced by 20 percent.

Drawings

FIG. 1 is a perspective view of the present invention;

FIG. 2 is a schematic structural diagram of a slag removing plate;

fig. 3 is a structural schematic diagram of a groove on the slag removing disc.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the utility model, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

As shown in fig. 1-3, a novel high-efficiency molten iron desulphurization slag removing device comprises an arc-surface-shaped slag removing disc 2 and a slag removing device arm I3, wherein the slag removing disc is provided with a through hole 1, a transverse plate 4 is fixed at the lower end of the slag removing device arm I, a first clamping strip 5 and a second clamping strip 6 which are arranged in parallel with the slag removing device arm are fixedly arranged on the transverse plate, and the first clamping strip and the transverse plate pass through the through hole and then fix the slag removing disc in an interval between the first clamping strip and the second clamping strip.

Wherein, taking the diameter (inner diameter) of the ladle as 1200mm as an example, the diameter (outer diameter) of the slag removing disc can be 1200mm, and the arc length of the slag removing disc is 300 mm.

The technical scheme is simple, and the slag removing plate adopts an arc surface design, so that the slag removing plate can be more attached to the wall of a molten iron ladle compared with the traditional square slag removing plate, the slag removing plate can remove slag in the molten iron ladle in all directions, and the slag removing plates with the same width can gather more slag to remove the desulfurized slag from the molten iron ladle quickly and efficiently, so that resulfurization is avoided, favorable conditions are provided for molten steel smelting desulfurization in subsequent working sections, and the consumption of molten steel desulfurized lime and smelting time are reduced.

The back of the slag removing disc is provided with a groove 10 which is communicated with the through hole, and the first clamping strip is clamped in the groove, so that the back of the slag removing disc can be better attached to the inner wall of a ladle, the slag removing disc can be prevented from shaking, the slag removing disc and the first slag remover arm are more stably fixed, and the depth of the groove is not less than the thickness of the first clamping strip.

Wherein, the slag removing disc is in interference fit with the first clamping strip and the second clamping strip.

The through hole is a rectangular hole.

The upper end of the first slag skimmer arm is fixedly connected with a second slag skimmer arm 9, the second slag skimmer arm is axially and horizontally arranged, and an included angle is formed between the second slag skimmer arm and the first slag skimmer arm.

The upper end of the first slag remover arm is fixedly arranged on a driven gear 7, the driven gear is meshed with a driving gear 8, the driving gear is fixed on an output shaft of a motor, the driven gear is rotatably connected with a second slag remover arm, the driven gear is a gear bearing, a fixed shaft is radially arranged on the second slag remover arm, the fixed shaft is fixedly connected with an inner ring of the gear bearing, and the driving gear is meshed with outer ring teeth of the gear bearing. The motor is fixed on the second slag raking device arm or a bracket fixedly connected with the second slag raking device arm, wherein a driving gear, a driven gear, the bracket and the motor are not shown in the figure.

The first clamping strip penetrates through the rectangular hole and then is pulled down to be clamped into the first clamping strip and the second clamping strip, the interval between the first clamping strip and the second clamping strip is hung on the transverse plate, and the interval between the first clamping strip and the second clamping strip is slightly smaller than the thickness of the slag removing disc to form interference fit, so that the slag removing disc is firmly fixed.

The angle between the first slag skimmer arm and the second slag skimmer arm is determined according to the angle of the ladle needing to rotate, when the ladle needs to rotate, the driven gear is driven by the driving gear to rotate through the motor to drive the driven gear to rotate, so that the driven gear can drive the first slag skimmer arm to rotate, and when the ladle is used, the second slag skimmer arm moves horizontally to skim slag.

It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a novel high-efficient molten iron desulfurization is taken off sediment device, its characterized in that, including arc face form take off the sediment dish, take off sediment ware arm one, take off the through-hole on the sediment dish, the lower extreme of taking off sediment ware arm one is fixed with the diaphragm, fixed mounting has the card strip one, card strip two with taking off sediment ware arm parallel arrangement on the diaphragm, card strip one, diaphragm pass behind the through-hole will take off the sediment dish and fix in the interval between card strip one and card strip two.

2. The novel high-efficiency molten iron desulphurization and slagging-off device of claim 1, wherein the slagging-off disc is in interference fit with the first clamping strip and the second clamping strip.

3. The novel high-efficiency molten iron desulphurization and slag removal device as claimed in claim 1, wherein the back surface of the slag removal disc is provided with a groove, the groove is communicated with the through hole, and the clamping strip is clamped in the groove.

4. The novel high-efficiency molten iron desulphurization and slagging-off device of claim 1, wherein the through hole is a rectangular hole.

5. The novel high-efficiency molten iron desulphurization and slag removal device as claimed in claim 1, wherein the upper end of the first slag remover arm is fixedly connected with the second slag remover arm, the second slag remover arm is axially and horizontally arranged, and an included angle is formed between the second slag remover arm and the first slag remover arm.

6. The new high-efficiency molten iron desulphurization and slag removal device as claimed in claim 5, wherein the upper end of the first slag remover arm is fixedly mounted on a driven gear, the driven gear is meshed with a driving gear, the driving gear is fixed on the output shaft of a motor, and the driven gear is rotatably connected with the second slag remover arm.