CN210215420U - Stirring device for blowing and stirring composite molten iron desulphurization - Google Patents
Stirring device for blowing and stirring composite molten iron desulphurization Download PDFInfo
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- CN210215420U CN210215420U CN201920691772.2U CN201920691772U CN210215420U CN 210215420 U CN210215420 U CN 210215420U CN 201920691772 U CN201920691772 U CN 201920691772U CN 210215420 U CN210215420 U CN 210215420U
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Abstract
The utility model discloses a stirring device for blowing and stirring composite molten iron desulphurization, which comprises a lifting frame, a rotary driving system, a transmission shaft, a stirring head and a powder gas pipe, wherein the lifting frame is driven by the lifting driving system and can ascend and descend in the vertical direction and be locked; the rotary driving system is arranged on the lifting frame, and the driving end of the rotary driving system is connected with the transmission shaft; the transmission shaft is vertically arranged, and the lower end of the transmission shaft is connected with the stirring head; the powder gas pipe is arranged inside the transmission shaft and the stirring head; the inlet of the powder air pipe is communicated with a desulfurizer powder supply pipeline, and the outlet of the powder air pipe is communicated with the outside. The utility model has the advantages that: the utility model discloses use the jetting desulfurization as the basis, introduce rotary driving device, make the jetting pipe rotatory, played the function of gas stirring to improve molten iron dynamics condition, make desulfurizer and molten iron reaction more abundant, improve the utilization ratio of desulfurizer.
Description
Technical Field
The utility model belongs to the technical field of the molten iron preliminary treatment, concretely relates to compound molten iron desulfurization's of jetting stirring agitating unit.
Background
With the social development and the continuous improvement of the requirements on the quality of steel, the molten iron desulphurization becomes one of the indispensable links of steel production. Mechanical stirring desulfurization and blowing desulfurization are two main methods for desulfurizing molten iron at present: the mechanical stirring desulfurization method is characterized in that a stirring head of an outer lining refractory material is immersed into a molten iron tank and is driven to rotate by a driving device, so that molten iron is stirred, desulfurization reaction between the molten iron and a desulfurizing agent is promoted, and the aim of desulfurizing the molten iron is fulfilled; the desulfurization method has good desulfurization effect, low production cost and short treatment time, but the temperature drop of the molten iron is large, and the iron loss is large. The blowing desulfurization method is characterized in that high-pressure gas is used as a carrier to spray a desulfurizing agent into molten iron from a spray gun, and the carrier gas simultaneously plays a role in stirring the molten iron so as to mix the desulfurizing agent and the molten iron for desulfurization; the blowing desulfurization method has low equipment investment cost, small molten iron temperature drop and small iron loss, but has poor dynamic conditions, insufficient reaction of the desulfurizing agent and the molten iron, low utilization rate of the desulfurizing agent and high unit consumption cost of the desulfurizing agent. Therefore, in order to meet the needs of modern production, it is necessary to further study the method of desulfurizing molten iron.
Disclosure of Invention
An object of the utility model is to provide a desulfurization agitating unit of compound molten iron of jetting stirring to prior art's not enough.
The utility model adopts the technical proposal that: a stirring device for blowing and stirring composite molten iron desulphurization comprises a lifting frame, a rotary driving system, a transmission shaft, a stirring head and a powder gas pipe, wherein the lifting frame is driven by the lifting driving system and can ascend, descend and be locked in the vertical direction; the rotary driving system is arranged on the lifting frame, and the driving end of the rotary driving system is connected with the transmission shaft; the transmission shaft is vertically arranged, and the lower end of the transmission shaft is connected with the stirring head; the powder gas pipe is arranged in the transmission shaft and the stirring head and is arranged along the axial direction of the transmission shaft and the stirring head; the inlet of the powder air pipe is communicated with a desulfurizer powder supply pipeline, and the outlet of the powder air pipe is communicated with the outside.
According to the scheme, the stirring head comprises a stirrer steel core; the upper end of the stirrer steel core is connected with the lower end of the transmission shaft through a half-joint, and the powder gas pipe penetrates through the upper end of the transmission shaft and extends out of the lower end of the stirrer steel core; the lower part of the stirrer steel core and the part of the powder gas pipe extending out of the stirrer steel core are coated with refractory materials, a powder gas outlet channel communicated with the powder gas pipe is arranged in the refractory materials, one end of the powder gas outlet channel is communicated with the powder gas pipe, and the other end of the powder gas outlet channel is communicated with the outside. In this embodiment, the powder gas pipe is divided into two sections, wherein the powder gas pipe is arranged inside the transmission shaft and the powder gas pipe is arranged in the stirrer steel core.
According to the scheme, the powder gas pipe is divided into two sections, wherein the powder gas pipe is arranged inside the transmission shaft and is an upper powder gas pipe, and the powder gas pipe is arranged in the steel core of the stirrer and is a lower powder gas pipe; two powder gas outlet channels with opposite directions are vertically and symmetrically arranged at the lower end of the lower powder gas pipe, a plug is arranged at the lower opening of the powder gas pipe, the two powder gas outlet channels and the lower powder gas pipe form a T-shaped channel, and desulfurizer powder gas enters from a desulfurizer powder gas supply pipeline and is sprayed out from the two powder gas outlet channels after sequentially passing through the upper powder gas pipe and the lower powder gas pipe.
According to the scheme, the lifting frame is a steel structure frame and is driven by a lifting driving system; an upper layer steel platform and a lower layer steel platform are arranged in the lifting frame, and the rotary driving system is arranged on the upper layer steel platform; the rotary driving system comprises a hollow sleeve type rotary driving speed reduction motor, the rotary driving speed reduction motor is installed on the upper steel platform, the transmission shaft penetrates through the hollow sleeve of the rotary driving speed reduction motor and is matched with the hollow sleeve, and the rotary driving speed reduction motor drives the transmission shaft to rotate.
According to the scheme, the transmission shaft is of a hollow long-axis structure and is vertically arranged; the transmission shaft is matched with bearings which are respectively arranged in the upper bearing seat and the lower bearing seat, wherein the upper bearing seat is arranged on the lower layer steel platform, the lower bearing seat is arranged in the supporting steel pipe, the supporting steel pipe is fixed at the bottom of the lower layer steel platform, and the transmission shaft penetrates out of the supporting steel pipe and then is connected with the stirrer steel core.
According to the scheme, the upper end of the transmission shaft is provided with the rotary joint, the rotary joint comprises a fixed part and a movable part which are communicated with each other, the fixed part is connected with the desulfurizer supply pipeline, the movable part is connected with the transmission shaft through the connecting bolt, the movable part can synchronously rotate along with the transmission shaft, and the lower opening of the movable part and the inner wall of the upper powder gas pipe are subjected to sealing treatment.
According to the scheme, the lower end of the transmission shaft is sleeved in the half-catcher and connected with the half-catcher key; the lower part of the half-catcher is connected with the upper end of the steel core of the stirrer through a bolt.
According to the scheme, the thread steel and the anchoring plates are alternately arranged on the outer wall of the lower powder air pipe at intervals in the circumferential direction, and the axial direction of the thread steel is parallel to the axial direction of the lower powder air pipe; the deformed steel bar and the anchoring plate are embedded in the refractory material,
according to the scheme, the upper end of the lower powder air pipe is provided with a powder air pipe sealing head, a sealing groove is formed in the powder air pipe sealing head, a third sealing ring is arranged on the inner side surface of the sealing groove, and the third sealing ring is used for sealing the joint of the upper powder air pipe and the lower powder air pipe.
According to the scheme, the sealing plate is arranged at the top of the sealing head of the powder gas pipe, and the supporting plate is arranged on the sealing plate; the sealing plate supports the upper powder gas pipe and further seals the joint of the upper powder gas pipe and the lower powder gas pipe.
The utility model has the advantages that: the utility model introduces the rotary driving device based on blowing desulfurization to rotate the blowing pipe, thereby playing the role of gas stirring, improving the dynamic condition of molten iron, leading the reaction of the desulfurizer and the molten iron to be more sufficient and improving the utilization rate of the desulfurizer; the utility model has the advantages that the stirring blades are not increased, the temperature drop loss of the molten iron is reduced as much as possible, and the stirring head is driven to rotate by adopting a more economical and concise transmission mode because the weight of the stirring head is not increased, so that the equipment investment is saved, and meanwhile, the equipment is simpler and more reliable; the utility model discloses equipment input cost does not have the large scale increase for jetting desulphurization unit, and the investment income obviously improves, is particularly useful for medium and small-tonnage molten iron desulfurization technology, and economic benefits is showing.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is an enlarged view of a point a in the present embodiment.
Fig. 3 is an enlarged view of the position B in the present embodiment.
Fig. 4 is an enlarged view of the point C in the present embodiment.
Fig. 5 is a sectional view a-a of fig. 1.
The notation in the figure is: 1-lifting frame, 2-rotary driving gear motor, 3-transmission shaft, 4-upper powder gas pipe, 5-upper bearing seat, 6-first sealing ring, 7-supporting steel pipe, 8-bearing, 9-lower bearing seat, 10-half connecting handle, 11-key, 12-stirrer steel core, 13-lower powder gas pipe, 14-powder gas outlet channel, 15-refractory material, 16-rotary joint, 17-second sealing ring, 18-connecting bolt, 19-baffle plate, 20-supporting plate, 21-sealing plate, 22-powder gas pipe sealing head, 23-third sealing ring, 24-plug, 25-anchoring plate and 26-deformed steel.
Detailed Description
For a better understanding of the present invention, reference is made to the following detailed description taken in conjunction with the accompanying drawings.
The stirring device for blowing and stirring combined molten iron desulphurization as shown in fig. 1 comprises a lifting frame 1, a rotary driving system, a transmission shaft 3, a stirring head and a powder gas pipe, wherein the lifting frame 1 is driven by the lifting driving system and can ascend, descend and lock in the vertical direction; the rotary driving system is arranged on the lifting frame 1, and the driving end of the rotary driving system is connected with the transmission shaft 3; the transmission shaft 3 is vertically arranged, and the lower end of the transmission shaft 3 penetrates through the lower-layer steel platform and then is connected with the stirring head; the powder gas pipe is arranged in the transmission shaft 3 and the stirring head and is arranged along the axial direction of the transmission shaft and the stirring head; the inlet of the powder air pipe is communicated with a desulfurizer powder supply pipeline, and the outlet of the powder air pipe is communicated with the outside.
Preferably, said stirring head comprises a stirrer steel core 12; a flange at the upper end of the stirrer steel core 12 is connected with the lower end of the transmission shaft 3 through a half-joint 10, and the powder gas pipe penetrates from the upper end of the transmission shaft 3 and extends out of the lower end of the stirrer steel core 12; the lower part of the stirrer steel core 12 and the part of the powder gas pipe extending out of the stirrer steel core 12 are coated with refractory materials 15, a powder gas outlet channel 14 communicated with the powder gas pipe is arranged in the refractory materials 15, one end of the powder gas outlet channel 14 is communicated with the powder gas pipe, and the other end of the powder gas outlet channel 14 is communicated with the outside. In this embodiment, the powder gas pipe has two sections, wherein the upper powder gas pipe 4 is arranged inside the transmission shaft 3, and the lower powder gas pipe 13 is arranged inside the steel core 12 of the stirrer.
The utility model discloses in, lifting frame 1 is steel structural framework, by the lift actuating system drive, can freely go up and down and lock in the vertical direction according to the molten iron desulfurization process requirement, and this technique is prior art, and here is not repeated. An upper layer steel platform and a lower layer steel platform are arranged in the lifting frame 1, and the rotary driving system is arranged on the upper layer steel platform; the rotary driving system comprises a hollow sleeve type rotary driving speed reduction motor 2, the rotary driving speed reduction motor 2 is installed on the upper steel platform, the transmission shaft 3 penetrates through the hollow sleeve of the rotary driving speed reduction motor 2 and is matched with the hollow sleeve, and the rotary driving speed reduction motor 2 drives the transmission shaft 3 to rotate.
In the utility model, the transmission shaft 3 is a hollow long-axis structure and is vertically arranged; the transmission shaft 3 is matched with bearings 8 which are respectively arranged in an upper bearing 8 seat and a lower bearing 8 seat, wherein the upper bearing 8 seat is arranged on a lower layer steel platform, the lower bearing 8 seat is arranged in a supporting steel pipe 7, the supporting steel pipe 7 is fixed at the bottom of the lower layer steel platform, and the transmission shaft 3 penetrates out of the supporting steel pipe 7 and then is connected with a stirrer steel core 12; in order to prevent dust from entering the bearing 8, sealing rings one 6 are respectively arranged at both ends of the upper bearing seat 5 and the lower bearing seat 9. In this embodiment, the upper bearing seat 5 and the lower bearing seat 9 are connected into a whole through the support steel pipe 7, and are fixed on the lower steel platform of the lifting frame 1 together, so as to support the transmission shaft 3 (as shown in fig. 1). The upper end of the transmission shaft 3 is provided with a rotary joint 16, the rotary joint 16 comprises a fixed part and a movable part which are communicated with each other, wherein the fixed part is connected with a desulfurizer supply pipeline, the movable part is connected with the transmission shaft 3 through a connecting bolt 18, and the movable part can synchronously rotate along with the transmission shaft 3; a second sealing ring 17 is arranged between the lower opening of the movable part and the inner wall of the upper powder gas pipe 4 to prevent the desulfurizing agent powder gas from leaking (as shown in figure 2). The lower end of the transmission shaft 3 is sleeved in the half-joint 10 and is connected with a key 11 of the half-joint 10 (the key 11 is used for transmitting torque); the lower part of the half-catcher 10 is connected with the upper end of the steel core 12 of the stirrer through a bolt.
In the utility model, the powder air pipe comprises an upper powder air pipe 4 and a lower powder air pipe 13, wherein the upper powder air pipe 4 is arranged in the transmission shaft 3, and a certain gap is left between the outer wall of the upper powder air pipe 4 and the hollow inner wall of the transmission shaft 3; the lower end of the upper powder air pipe 4 extends out of the transmission shaft 3, and the outer wall of the lower end is welded with a supporting plate 20; the lower opening of the upper powder air pipe 4 is connected with the upper opening of the lower powder air pipe 13, and a third sealing ring 23 is arranged at the joint of the upper powder air pipe and the lower powder air pipe. The lower powder gas pipe 13 is sleeved inside the stirrer steel core 12, and a certain gap is left between the outer wall of the lower powder gas pipe 13 and the inner wall of the stirrer steel core 12 (as shown in fig. 1). The upper end of the lower powder gas pipe 13 is provided with a powder gas pipe sealing head 22, a sealing groove is arranged in the powder gas pipe sealing head 22, a third sealing ring 23 is arranged on the inner side surface of the sealing groove, and the third sealing ring 23 is used for sealing the joint of the upper powder gas pipe 4 and the lower powder gas pipe 13; a sealing plate 21 is arranged at the top of the powder gas tube sealing head 22, and the supporting plate 20 is arranged on the sealing plate 21; the sealing plate 21 supports the upper cyclone 4 and further seals the junction of the upper cyclone 4 and the lower cyclone 13 (see fig. 3). Two powder gas outlet channels 14 with opposite directions are vertically and symmetrically arranged at the lower end of the lower powder gas pipe 13, a plug 24 is welded at the bottom of the powder gas outlet channel 14, the two powder gas outlet channels 14 and the lower powder gas pipe 13 form a T-shaped channel, and desulfurizer powder gas enters from a desulfurizer powder gas supply pipeline and is sprayed out from the two powder gas outlet channels 14 after sequentially passing through the upper powder gas pipe 4 and the lower powder gas pipe 13.
In the utility model, the part below the flange of the stirrer steel core 12, the part of the lower powder gas pipe 13, which is exposed out of the stirrer steel core 12, and the powder gas outlet channel 14 are all coated by the refractory material 15; the outer wall of the lower powder air pipe 13 is circumferentially and uniformly provided with deformed steel bars 26 and anchoring plates 25 at intervals, and the axial direction of the deformed steel bars 26 is parallel to the axial direction of the lower powder air pipe 13; the deformed steel bars 26 and the anchoring plates 25 are embedded in the refractory material 15, the deformed steel bars 26 reinforce the lower powder gas pipe 13, and the anchoring plates 25 are used for reinforcing the adhesive force between the refractory material 15 and each steel structure, resist the corrosion of molten iron in the stirring process and meet the service life requirement of the stirring head (shown in fig. 4 and 5).
Agitating unit has specifically realized the compound back agitating unit of blowing method and stirring method and has gone up required various functions, like the rotary drive of agitator and the input of the rotatory in-process desulfurizer powder gas of agitator, the setting of powder gas passageway and the dynamic seal design of each junction etc..
The utility model discloses a theory of operation does:
1. the stirring device is integrally installed, and according to the desulfurization process requirement, when the stirring device does not need to work, the lifting frame 1 is lifted to a high position and locked; when the stirring device needs to work, the lifting frame 1 is lowered to a low position and locked, and then the rotary driving speed reduction motor 2 is started.
2. The rotary driving speed reduction motor 2 is in a hollow sleeve installation form, and the transmission shaft 3 can directly penetrate through the hollow sleeve to be connected with the rotary driving speed reduction motor 2; the rotary driving speed reducing motor 2 is small in size and large in speed reducing ratio, and can meet the rotating speed and rotating torque required by stirring.
3. The stirrer steel core 12, the lower powder gas pipe 13, the powder gas outlet and the refractory material 15 jointly form a stirring head for stirring molten iron, the stirring head is connected with the rotary driving speed reduction motor 2 through the transmission shaft 3, and the stirring head performs rotary motion under the driving of the rotary driving speed reduction motor 2, so that the aim of improving the dynamic conditions of the molten iron during blowing is fulfilled.
4. In the rotating process of the stirring head, the transmission shaft 3 synchronously rotates, the rotary joint 16 is fixed on the transmission shaft 3, the movable part of the rotary joint 16 rotates along with the transmission shaft 3, and the fixed part of the rotary joint 16 is connected with an external desulfurizing agent powder gas supply pipeline and is in a static state. The desulfurizer powder gas enters the movable part through the fixed part of the rotary joint 16, flows through the inside of the upper powder gas pipe 4, enters the inside of the lower powder gas pipe 13, and is finally sprayed out from two powder gas outlet channels 14 at the bottom of the lower powder gas pipe 13 and enters molten iron. When the transmission shaft 3 rotates, the lower powder gas pipe 13 and the stirrer steel core 12 rotate together, and the upper powder gas pipe 4 is kept relatively static and is sealed by the powder gas pipe sealing head 22 and the sealing ring III 23.
It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The stirring device for blowing and stirring combined molten iron desulphurization is characterized by comprising a lifting frame, a rotary driving system, a transmission shaft, a stirring head and a powder gas pipe, wherein the lifting frame is driven by the lifting driving system and can ascend and descend in the vertical direction and be locked; the rotary driving system is arranged on the lifting frame, and the driving end of the rotary driving system is connected with the transmission shaft; the transmission shaft is vertically arranged, and the lower end of the transmission shaft is connected with the stirring head; the powder gas pipe is arranged in the transmission shaft and the stirring head and is arranged along the axial direction of the transmission shaft and the stirring head; the inlet of the powder air pipe is communicated with a desulfurizer powder supply pipeline, and the outlet of the powder air pipe is communicated with the outside.
2. The stirring apparatus for molten iron desulfurization by blowing stirring combination according to claim 1, wherein the stirring head comprises a stirrer steel core; the upper end of the stirrer steel core is connected with the lower end of the transmission shaft through a half-joint, and the powder gas pipe penetrates through the upper end of the transmission shaft and extends out of the lower end of the stirrer steel core; the lower part of the stirrer steel core and the part of the powder gas pipe extending out of the stirrer steel core are coated with refractory materials, a powder gas outlet channel communicated with the powder gas pipe is arranged in the refractory materials, one end of the powder gas outlet channel is communicated with the powder gas pipe, and the other end of the powder gas outlet channel is communicated with the outside.
3. The stirring apparatus for desulfurization of molten iron by blowing and stirring according to claim 2, wherein the pulverized gas pipe is divided into two sections, wherein the pulverized gas pipe is disposed inside the transmission shaft and the pulverized gas pipe is disposed inside the stirrer core; two powder gas outlet channels with opposite directions are vertically and symmetrically arranged at the lower end of the lower powder gas pipe, a plug is arranged at the lower opening of the powder gas pipe, the two powder gas outlet channels and the lower powder gas pipe form a T-shaped channel, and desulfurizer powder gas enters from a desulfurizer powder gas supply pipeline and is sprayed out from the two powder gas outlet channels after sequentially passing through the upper powder gas pipe and the lower powder gas pipe.
4. The stirring apparatus for desulfurizing molten iron by blowing and stirring according to claim 2, wherein the lifting frame is a steel frame and is driven by a lifting driving system; an upper layer steel platform and a lower layer steel platform are arranged in the lifting frame, and the rotary driving system is arranged on the upper layer steel platform; the rotary driving system comprises a hollow sleeve type rotary driving speed reduction motor, the rotary driving speed reduction motor is installed on the upper steel platform, the transmission shaft penetrates through the hollow sleeve of the rotary driving speed reduction motor and is matched with the hollow sleeve, and the rotary driving speed reduction motor drives the transmission shaft to rotate.
5. The stirring apparatus for desulfurization of molten iron according to claim 4, wherein said transmission shaft has a hollow long-axis structure and is vertically disposed; the transmission shaft is matched with bearings which are respectively arranged in the upper bearing seat and the lower bearing seat, wherein the upper bearing seat is arranged on the lower layer steel platform, the lower bearing seat is arranged in the supporting steel pipe, the supporting steel pipe is fixed at the bottom of the lower layer steel platform, and the transmission shaft penetrates out of the supporting steel pipe and then is connected with the stirrer steel core.
6. The stirring apparatus for desulfurizing molten iron by blowing and stirring according to claim 5, wherein a rotary joint is provided at an upper end of the driving shaft, the rotary joint comprising a fixed part and a movable part communicating with each other, wherein the fixed part is connected to the desulfurizing agent supply pipe, the movable part is connected to the driving shaft via a connecting bolt, the movable part is rotatable in synchronization with the driving shaft, and a lower port of the movable part is sealed against an inner wall of the upper powder air duct.
7. The stirring apparatus for desulfurization of molten iron by blowing and stirring according to claim 2, wherein the lower end of the transmission shaft is fitted into and connected to the half-catcher key; the lower part of the half-catcher is connected with the upper end of the steel core of the stirrer through a bolt.
8. The stirring apparatus for combined molten iron desulphurization according to claim 3, wherein the outer wall of the lower powder air tube is provided with deformed steel bars and anchoring plates at even intervals in the circumferential direction, and the axial direction of the deformed steel bars is parallel to the axial direction of the lower powder air tube; the deformed steel bar and the anchoring plate are embedded in the refractory material.
9. The stirring apparatus for performing combined molten iron desulphurization through blowing and stirring according to claim 3, wherein a powder gas tube sealing head is provided at the upper end of the lower powder gas tube, a sealing groove is provided in the powder gas tube sealing head, a third sealing ring is provided on the inner side surface of the sealing groove, and the third sealing ring is used for sealing the joint of the upper powder gas tube and the lower powder gas tube.
10. The stirring apparatus for desulfurization of molten iron by blowing and stirring combination according to claim 3, wherein a sealing plate is provided on the top of the sealing head of the powder gas pipe, and a supporting plate is welded to the outer wall of the lower end of the upper powder gas pipe, the supporting plate being provided on the sealing plate; the sealing plate supports the upper powder gas pipe and further seals the joint of the upper powder gas pipe and the lower powder gas pipe.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920691772.2U CN210215420U (en) | 2019-05-15 | 2019-05-15 | Stirring device for blowing and stirring composite molten iron desulphurization |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920691772.2U CN210215420U (en) | 2019-05-15 | 2019-05-15 | Stirring device for blowing and stirring composite molten iron desulphurization |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055368A (en) * | 2019-05-15 | 2019-07-26 | 中冶南方工程技术有限公司 | The agitating device of compound desulfurizing iron is stirred in a kind of blowing |
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2019
- 2019-05-15 CN CN201920691772.2U patent/CN210215420U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055368A (en) * | 2019-05-15 | 2019-07-26 | 中冶南方工程技术有限公司 | The agitating device of compound desulfurizing iron is stirred in a kind of blowing |
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