CN1254763A - Desulfurizing method and equipment by co-stirring of machine and gas - Google Patents
Desulfurizing method and equipment by co-stirring of machine and gas Download PDFInfo
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- CN1254763A CN1254763A CN 98121021 CN98121021A CN1254763A CN 1254763 A CN1254763 A CN 1254763A CN 98121021 CN98121021 CN 98121021 CN 98121021 A CN98121021 A CN 98121021A CN 1254763 A CN1254763 A CN 1254763A
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
A desulfurizing method and equipment using the co-stirring of machine and gas for the external desulfurization of molten iron features that a sealing rotary joint fixed to the top end of blowing pipe is used to connect said blowing pipe with desulfurizing agent conveying pipe in sealing and moving mode, and a driver is joined to upper part of blowing pipe whose lower part has a stirring block fixed to it. Both gas blowing and mechanical stirring act on the molten iron at same time for desulfurizing it. Its advantages are high stirring, sufficient mixing between molten iron and desulfurizing agent, short reaction time, high desulfurizing rate increased from 40-50% to more than 80%, and high utilization rate of desulfurizing agent.
Description
The present invention relates to a kind of method and apparatus of external desulfurization of hot metal, sulfur method and device that particularly a kind of machinery, gas recombination stir.
In the process of external desulfurization of hot metal, the factor that influences its sweetening effectiveness has a lot, except the factors such as height of the length of the kind of sweetening agent, quality, desulfurization time, molten iron temperature, and the stirring means when also having sweetening agent and molten iron to mix.At present, the method that is used for external desulfurization of hot metal mainly contains two kinds: a kind of is mechanical mixing method, and a kind of is the gas blowing process.Mechanical mixing method is to drop into sweetening agent in molten iron, stirs with the power wheel drive stirring rake then, makes molten iron and sweetening agent mix the method that realizes desulfurizing iron.The gas blowing process is meant with spray gun sends carrying object and sweetening agent into the molten iron depths, utilizes bubble floating to carry out the method for desulfurizing iron.Because these two kinds of methods all are to use separately, therefore be difficult to thorough mixing between molten iron and the sweetening agent in the short period of time, although this problem is also not obvious under the situation of molten iron temperature higher (1400 ℃), sweetening effectiveness is still relatively good, desulfurization degree can reach 90%, but but shows particularly outstandingly under the situation of the outer molten iron temperature generally lower (1200～1300 ℃) of stove at home, and not only sweetening effectiveness is poor, desulfurization degree generally can only reach 40～50%, and the utilization ratio of sweetening agent is also lower.If make it abundant reaction, improve desulfurization degree, just must prolong the reaction times, so do not satisfy demand of practical production again far away.
The sulfur method and the device that the object of the present invention is to provide a kind of machinery, gas recombination to stir, make under the situation of its molten iron temperature outside stove lower (1200～1300 ℃), under the constant condition of other factorses such as the kind of sweetening agent, quality, by improving the thorough mixing time that the stirring intensity of molten iron is shortened molten iron and sweetening agent, thereby reach the desulfurization degree that both improves molten iron, improve the purpose of sorbent utilization again.
The object of the present invention is achieved like this, and the sulfur method that this machinery, gas recombination stir is that the outer molten iron of stove is carried out gas winding-up and mechanical stirring simultaneously.Wherein gas winding-up and mechanical stirring both can be simultaneously finished jointly by independent device separately, also can finish jointly by same device.
A kind of device that is used for the sulfur method of machinery, gas recombination stirring, mainly have the winding-up pipe of injection hole and refractory materials that the winding-up pipe is gone up external application is formed by the lower end, upper end at the winding-up pipe is fixed with seal swivel joint, and by seal swivel joint will jet the pipe connect with the winding-up transfer line sealing activity of sweetening agent, drive unit is connected in the top of winding-up pipe, is fixed with the stirring piece of external application refractory materials in the bottom of winding-up pipe.
Because the present invention has adopted mechanical stirring is carried out external desulfurization of hot metal with the method that the gas winding-up combines, therefore improved the stirring intensity of molten iron widely, thorough mixing and reaction times between molten iron and the sweetening agent have been shortened simultaneously, under the constant condition of other factorses such as the kind of sweetening agent, quality, its desulfurization degree can be brought up to more than 80% from original 40～50%, has improved the utilization ratio of sweetening agent simultaneously again.
Below in conjunction with accompanying drawing the present invention is described in further detail.
Fig. 1 is the schematic diagram of the sulfur method of machinery of the present invention, gas recombination stirring;
Fig. 2 is the structural representation of the desulfurizer of machinery of the present invention, gas recombination stirring;
Fig. 3 is the structural representation of the seal swivel joint part among Fig. 2;
Fig. 4 is a kind of structural representation that stirs piece among Fig. 2;
Fig. 5 is the another kind of structural representation that stirs piece among Fig. 2.
As shown in Figure 1, the sulfur method of machinery of the present invention, gas recombination stirring is that the outer molten iron 10 of stove is carried out gas winding-up and mechanical stirring simultaneously.Wherein gas winding-up and churned mechanically implementation mainly contain two kinds: a kind of is to finish jointly by independent device separately simultaneously, such as around near iron ladle 9 inner side-walls, inserting one or more winding-up pipes that are connected with the winding-up transfer line of sweetening agent, be equipped with at the center of iron ladle and the joining agitator arm (figure slightly) that stirs piece that has of drive unit; Another kind can be finished (as shown in Figure 2) jointly by same device.
As shown in Figure 2, the present invention is used to realize the machinery of aforesaid method, the desulfurizer that gas recombination stirs, the main winding-up pipe 6 that is had injection hole 8 by the lower end is formed with the refractory materials 7 that the winding-up pipe is gone up external application, upper end at winding-up pipe 6 is fixed with seal swivel joint 2, and connect with the winding-up transfer line 1 sealing activity of sweetening agent by seal swivel joint 2 pipe 6 of will jetting, drive unit 3 is connected in the top of winding-up pipe 6, is fixed with the stirring piece 5 of external application refractory materials in the bottom of winding-up pipe 6.
As shown in Figure 3, in the desulfurizer that machinery of the present invention, gas recombination stir, its seal swivel joint 2 mainly is the upper end that is fixed on winding-up pipe 6 by an end, the other end is formed by the bearing assembly 23 and the terminal joining sleeve 26 of the winding-up transfer line 1 of sweetening agent, bearing assembly 23 is by back-up ring 24 and end cap 22 fixed in addition, and will guarantee simultaneously has certain distance between the upper end of the end of pipeline 1 and winding-up pipe 6.In addition, from sleeve 26, shed, between sleeve 26 and pipeline 1, also be filled with lock packing 25 in order to prevent sweetening agent.
As shown in Figure 3, in the desulfurizer that machinery of the present invention, gas recombination stir, its drive unit 3 is the top that is connected in winding-up pipe 6 by shaft coupling 31 and intermeshing bevel gear set 32.In addition, consider safety and dust-proof needs, an outer cover 21 is installed around whole seal swivel joint 2 and gear unit 32.
As shown in Figure 2, because seal swivel joint 2, gear unit 32 and have the winding-up pipe 6 that stirs piece 5 and all belong to consumable accessory, for the ease of removing and installing, the present invention's pipe 6 of will jetting is divided into the two portions up and down that are used to connect drive unit and are used to stir, and by a splice sleeve 4 these two portions is linked together.
Shown in Fig. 4,5, stir piece 5 among the present invention and can adopt multiple structure formation, be that " ten " font or cross section are " one " font as cross section, also can adopt cross section is the structure (figure is slightly) of " rice " font.
Difference according to actual needs, the quantity that is fixed on the stirring piece 5 of winding-up pipe 6 bottoms among the present invention can determine arbitrarily that under the situation of conditions permit be generally 1～3 and get final product, each structure that stirs between the piece 5 promptly can be identical, also can be different.In addition, the quantity of injection hole 8 can be selected in 3 or 4 and is advisable in the winding-up pipe 6.
This device drive winding-up pipe 6 under motor 3 drivings rotates simultaneously with stirring piece 5 during desulfurization.Stir 5 pairs of molten iron of piece and carry out mechanical stirring, manage 6 lower end injection holes 8 to molten iron depths rotary blowing current-carrying gas and sweetening agent from winding-up simultaneously, molten iron is carried out the gas winding-up.Therefore the low temperature molten iron is under the effect of these two kinds of whipping forces, can and the sweetening agent thorough mixing, shortened the reaction times, improved the utilization ratio of sweetening agent, the while desulfurization degree is also brought up to more than 80% from original 40～50%.
Claims (10)
1, the sulfur method of a kind of machinery, gas recombination stirring is characterized in that the outer molten iron of stove is carried out gas winding-up and mechanical stirring simultaneously.
2, the sulfur method that stirs of machinery according to claim 1, gas recombination is characterized in that gas winding-up and mechanical stirring finish jointly by independent device separately.
3, the sulfur method of machinery according to claim 1, gas recombination stirring is characterized in that gas is jetted and mechanical stirring is finished jointly by same device.
4, a kind of device that is used for the sulfur method of the described machinery of claim 1, gas recombination stirring, mainly have the winding-up pipe (6) of injection hole (8) and refractory materials (7) that winding-up pipe is gone up external application is formed by the lower end, it is characterized in that being fixed with seal swivel joint (2) in the upper end of winding-up pipe (6), and connect with winding-up transfer line (1) the sealing activity of sweetening agent by seal swivel joint (2) pipe (6) of will jetting, drive unit (3) is connected in the top that (6) are managed in winding-up, and the bottom of winding-up pipe (6) is fixed with the stirring piece (5) of external application refractory materials (7).
5, the desulfurizer of machinery according to claim 4, gas recombination stirring, it is characterized in that seal swivel joint (2) is the upper end that is fixed on winding-up pipe (6) by an end, the other end is formed by the bearing assembly (23) and the terminal joining sleeve (26) of the winding-up transfer line (1) of sweetening agent, and is filled with lock packing (25) between sleeve (26) and pipeline (1).
6, the desulfurizer that stirs of machinery according to claim 4, gas recombination is characterized in that drive unit (3) is the top that is connected in winding-up pipe (6) by shaft coupling (31) and intermeshing bevel gear set (32).
7, the desulfurizer of machinery according to claim 4, gas recombination stirring, it is characterized in that on the top of winding-up pipe (6), be linked together with the part that is used for external application refractory materials (7) by a splice sleeve (4) part that is used to connect drive unit (3) in the pipe (6) of will jetting.
8, the desulfurizer that stirs of machinery according to claim 4, gas recombination, the cross section that it is characterized in that stirring piece (5) is " ten " font structure.
9, the desulfurizer that stirs of machinery according to claim 4, gas recombination, the cross section that it is characterized in that stirring piece (5) is " one " font structure.
10, the desulfurizer that stirs of machinery according to claim 4, gas recombination, the quantity that it is characterized in that stirring piece (5) is 1～3, the quantity of injection hole (8) is 1～4 in the winding-up pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121021 CN1254763A (en) | 1998-11-25 | 1998-11-25 | Desulfurizing method and equipment by co-stirring of machine and gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98121021 CN1254763A (en) | 1998-11-25 | 1998-11-25 | Desulfurizing method and equipment by co-stirring of machine and gas |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1254763A true CN1254763A (en) | 2000-05-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98121021 Pending CN1254763A (en) | 1998-11-25 | 1998-11-25 | Desulfurizing method and equipment by co-stirring of machine and gas |
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| CN (1) | CN1254763A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948942A (en) * | 2010-09-17 | 2011-01-19 | 马鞍山市鑫海耐火材料有限责任公司 | Novel desulfurization spray gun |
| CN102443536A (en) * | 2010-10-09 | 2012-05-09 | 新奥科技发展有限公司 | Auxiliary device for photobioreactor |
| CN102676741A (en) * | 2012-05-29 | 2012-09-19 | 中天钢铁集团有限公司 | KR (knotted reactor) powder spraying, stirring and desulfurizing device and method |
| CN104755634A (en) * | 2012-10-10 | 2015-07-01 | 浦项制铁公司 | Impellor and melt-pool processing method using same |
| CN105256102A (en) * | 2014-07-16 | 2016-01-20 | 鞍钢股份有限公司 | Blowing and stirring combined molten iron pretreatment desulfurization device and method |
| CN110699508A (en) * | 2019-10-31 | 2020-01-17 | 武汉科技大学 | Blowing type spiral stirrer for molten iron desulphurization |
| CN110777234A (en) * | 2019-11-25 | 2020-02-11 | 张家港扬子江冷轧板有限公司 | Double-blowing molten iron desulphurization device |
-
1998
- 1998-11-25 CN CN 98121021 patent/CN1254763A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101948942A (en) * | 2010-09-17 | 2011-01-19 | 马鞍山市鑫海耐火材料有限责任公司 | Novel desulfurization spray gun |
| CN101948942B (en) * | 2010-09-17 | 2012-10-03 | 马鞍山市鑫海耐火材料有限责任公司 | Novel desulfurization spray gun |
| CN102443536A (en) * | 2010-10-09 | 2012-05-09 | 新奥科技发展有限公司 | Auxiliary device for photobioreactor |
| CN102443536B (en) * | 2010-10-09 | 2014-07-30 | 新奥科技发展有限公司 | Auxiliary device for photobioreactor |
| CN102676741A (en) * | 2012-05-29 | 2012-09-19 | 中天钢铁集团有限公司 | KR (knotted reactor) powder spraying, stirring and desulfurizing device and method |
| CN104755634A (en) * | 2012-10-10 | 2015-07-01 | 浦项制铁公司 | Impellor and melt-pool processing method using same |
| CN104755634B (en) * | 2012-10-10 | 2017-06-09 | 浦项制铁公司 | Impeller and use its molten bath processing method |
| US9683271B2 (en) | 2012-10-10 | 2017-06-20 | Posco | Impeller and method of melt-pool processing method using the same |
| CN105256102A (en) * | 2014-07-16 | 2016-01-20 | 鞍钢股份有限公司 | Blowing and stirring combined molten iron pretreatment desulfurization device and method |
| CN110699508A (en) * | 2019-10-31 | 2020-01-17 | 武汉科技大学 | Blowing type spiral stirrer for molten iron desulphurization |
| CN110699508B (en) * | 2019-10-31 | 2022-02-01 | 武汉科技大学 | Blowing type spiral stirrer for molten iron desulphurization |
| CN110777234A (en) * | 2019-11-25 | 2020-02-11 | 张家港扬子江冷轧板有限公司 | Double-blowing molten iron desulphurization device |
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