CN202465768U - Melted iron desulfurization spray gun utilizing granular magnesium - Google Patents
Melted iron desulfurization spray gun utilizing granular magnesium Download PDFInfo
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- CN202465768U CN202465768U CN2011205430351U CN201120543035U CN202465768U CN 202465768 U CN202465768 U CN 202465768U CN 2011205430351 U CN2011205430351 U CN 2011205430351U CN 201120543035 U CN201120543035 U CN 201120543035U CN 202465768 U CN202465768 U CN 202465768U
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- spray gun
- molten iron
- linear arm
- splitter
- taper
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Abstract
The utility model belongs to the field of ferrous metallurgy, particularly relates to a melted iron desulfurization spray gun utilizing granular magnesium. The spray gun comprises frameworks (1) with a fire-resistant liner (2) and a spray gun channel (3). A two-phase flow divider (4) is fixedly arranged on an end portion of the spray gun channel (3), linear branch pipes (6) are fixedly arranged at an outlet of the two-phase flow divider (4), a tapered splitter (5) is fixedly arranged at an end portion, which is located in an extension of the two-phase flow divider and corresponding to entrances of the linear branch pipes (6), of the spray gun channel (3), and is arranged at the bottom of the two-phase flow divider (4), the tapered splitter (5) is a cylinder with a tip which points towards the direction of the spray gun channel (3), and the inclined angle Alpha formed between each inclined plane and the longitudinal axis of the tapered splitter is half of the inclined angle Beta formed between each linear branch pipe (6) and the longitudinal axis of the spray gun. By the aid of the melted iron desulfurization spray gun utilizing the granular magnesium, material supply intensity of guiding the granular magnesium into the melted iron can be improved, reliability of delivering the granular magnesium physically can be guaranteed, and high index of desulfurization in a large hot metal ladle can be achieved.
Description
Technical field
The utility model belongs to ferrous metallurgy device field, is specifically to belong to stove to handle molten iron outward, can be used for being a large amount of desulfurizing irons, is included in to be the granule magnesium molten iron desulfuring spray gun of desulfurizing iron in the large-scale hot metal ladle of 140～350t.
Background technology
The known spray gun that uses when in large-scale hot metal ladle, being desulfurizing iron with particle magnesium is a nozzle, and it comprises a skeleton that refractory lining is arranged, crooked passage, dismountable fireproof casing and removable nozzle.Couple together with a threaded engagement between nozzle and bending channel.Install on the replaceable nozzle and fixing thrust washer.The angle of bend of the relative what spray gun of the spray gun passage longitudinal axis is 30～50 ℃, and the bending radius of passage is not less than 100mm.
Shortcoming of the known molten iron desulfuring spray gun of this structure be supply magnesium intensity have certain limitation (6～12kg/min), more inadequate when especially used hot metal ladle freeboard less (below the 0.4m) and the fierce degree of sweetening process are higher.
This in big hot metal ladle the spray gun of desulfurization (using particle magnesium) usefulness as prototype; Comprise the skeleton and the spray gun passage that hang with refractory lining; The spray gun passage replenishes the arm and the removable nozzle of two splitter of equipment, bending in the exit; These all become independently parts, and simultaneously, two is not more than 15 ° with respect to the separately angle of the spray gun longitudinal axis in the splitter; Arm is 35～50 ° with respect to the angle of bend of the spray gun longitudinal axis; The inside nominal diameter of eyelet exports propulsive route and dwindles gradually to spray gun with two in the splitter, in the arm and in the replaceable nozzle, and the summation of section area equals the spray gun cross sectional area in each arm, and the ratio of section area is 0.6～0.9 in replaceable nozzle and the arm.
The splitter that a shortcoming of prototype is a two is manufactured complicacy, because diversion structure receives the restriction (being not more than 15 °) of minute of angle, and arm needs bending (35～50 °), this just make manufacture be very much complicated with manufacture expense and increase.The bending of arm has also strengthened the partial resistance of defeated magnesium pipeline.In addition; This structure of splitter can not guarantee that two has enough sufficient shunt before getting into arm; Because some solid phase material is when colliding with the splitter inwall; Maybe be to the deceleration of motion of total materials flow of shunting not as yet, cause shock resistance to increase and produce vibration, thereby the situation of carrier gas flux occurs strengthening.Enlargement in section causes the speed loss of two in the splitter after the access incisions, has also hindered the further rationalization of injection parameter, promptly hinders the raising of material concentration in the carrier gas and the reduction of carrier gas flux.
When the processing high-sulphur molten iron is produced low-sulfur molten iron in large-scale hot metal ladle, must in melt, import the magnesium more than the 200kg.Although can guarantee that at two nozzle spray guns 14～20kg/min supplies under the situation of magnesium intensity, in molten iron, spray into the required time of magnesium material still very long (10～14min).Handling oversize meeting of time spent causes spray gun to safeguard that labor capacity strengthens and service life of lance shortens.In addition, the molten iron groundwater increment also is restricted in the hot metal ladle, and the freeboard height should be not less than 0.4m in the bag.
The utility model content
The utility model is intended to overcome the weak point of prior art and a kind of feeding strength that imports particle magnesium that improves in molten iron is provided; Guarantee the safety of air conveying particle magnesium material, reach the granule magnesium molten iron desulfuring spray gun of desulfurization high target in large-scale hot metal ladle.
For solving the problems of the technologies described above, the utility model is achieved in that
Granule magnesium molten iron desulfuring spray gun, it comprises skeleton and the spray gun passage of being with refractory lining; Be fixed with the two splitter in the end of spray gun passage; Be fixed with the linear arm in the exit of said two splitter; In the bottom of said two splitter, in two splitter extension, line correspondence shape arm ingress, end is fixed with taper and splits the branch device in the spray gun passage.
As a kind of preferred version, it is the right cylinder that has tip that the branch device is split in the said taper of the utility model, and its tip points to the spray gun channel direction; Said taper is split branch device tip cone bottom diameter and is equaled the spray gun channel diameter.
As another kind of preferred version, the tip that the branch device is split in the said taper of the utility model forms some scarp; The inclination alpha that the branch device longitudinal axis is split to taper in said scarp equals linear arm half the to spray gun longitudinal axis angle of inclination beta.
Further, the quantity on the said scarp of the utility model equals the number of linear arm, and each scarp is corresponding with the inlet of linear arm.
Further, the point of contact, bottom of branch device scarp and barrel portion is split in the said taper of the utility model, and point of contact, the bottom K with spray gun passage eyelet in two splitter extension coincides with linear arm eyelet.
In addition, the inlet eye diameter of the said linear arm of the utility model is selected by following proportionlity:
In the formula: d в х is linear arm inlet eye diameter, mm;
D κ is the spray gun channel diameter, mm;
N is the quantity of linear arm, number.
Secondly, the utility model is fixed with replaceable nozzle in the exit of said linear arm.
Once more, the utility model is with fire-resistant bushing pipe on said replaceable nozzle.
The hand-hole of the utility model linear arm can be made the shape of tapering, and its cone angle is controlled between 5～10 °.
The effect that industry adopts this spray gun to obtain is: guaranteed in molten iron, to infeed the feed stability of particle magnesium, improved confession magnesium intensity, improved the filling level of molten iron in the hot metal ladle, shortened the time of handling molten iron, reduced the laboring fee of repairing spray gun and used.
Compare the spray gun of applying for a patent and its prototype; Show that its difference is: in the two splitter, inserted a taper and split the branch device; Cone bottom diameter equals the spray gun channel diameter, and the inclination alpha that the branch device longitudinal axis is split to taper in the scarp equals linear arm half the to spray gun longitudinal axis angle of inclination beta.At this moment, arm becomes linear, and its inlet diameter is selected by following relational expression:
In the formula: d в х is linear arm inlet eye diameter, mm;
D κ is the spray gun channel diameter, mm;
N is the quantity of linear arm, number.
Therefore, this spray gun of being applied for conforms to " utility model " criterion.
Compare this kind spray gun of applying for a patent and other technical scheme of the same trade, can not find the characteristic of wherein different what prototype.Therefore, this spray gun meets the criterion of " utility model level ".
Description of drawings
Below in conjunction with accompanying drawing and embodiment the utility model is described further.
Fig. 1 is the utility model spray gun substructure longitudinal diagram.
Among the figure: 1, skeleton; 2, refractory lining; 3, spray gun passage; 4, two splitter; 5, the branch device is split in taper; 6, linear arm; 7, replaceable nozzle; 8, fire-resistant bushing pipe.
Embodiment
As shown in the figure, granule magnesium molten iron desulfuring spray gun, it comprises skeleton 1 and the spray gun passage 3 of being with refractory lining 2; Be fixed with two splitter 4 in the end of spray gun passage 3; Be fixed with linear arm 6 in the exit of said two splitter 4; In the bottom of said two splitter 4, in two splitter extension, line correspondence shape arm 6 ingress, end are fixed with taper and split branch device 5 in spray gun passage 3.
The right cylinder of branch device 5 for having split in the said taper of the utility model, and its tip points to spray gun passage 3 directions; Said taper is split branch device 5 tip cone bottom diameters and is equaled spray gun passage 3 diameters.
The tip that branch device 5 is split in the said taper of the utility model forms some scarp; The inclination alpha that the branch device longitudinal axis is split to taper in said scarp equals the half the of 6 pairs of spray gun longitudinal axis of linear arm angle of inclination beta.
The quantity on the said scarp of the utility model equals the number of linear arm 6, and each scarp is corresponding with the inlet of linear arm 6.
The point of contact, bottom of branch device 5 scarp and barrel portion is split in the said taper of the utility model, and point of contact, the bottom K with spray gun passage 3 eyelet in two splitter extension coincides with linear arm 6 eyelets.
The inlet eye diameter of the said linear arm 6 of the utility model is selected by following proportionlity:
In the formula: d в х is linear arm inlet eye diameter, mm;
D κ is the spray gun channel diameter, mm;
N is the quantity of linear arm, number.
The utility model is fixed with replaceable nozzle 7 in the exit of said linear arm 6.
The utility model is with fire-resistant bushing pipe 8 on said replaceable nozzle 7.
The spray gun that the utility model is applied for a patent comprises skeleton 1, the refractory lining 2 on the skeleton, and spray gun passage 3, branch device 5 is split in two splitter 4 and the taper of inserting wherein, linear arm 6 and replaceable nozzle 7, the fire-resistant bushing pipe 8 of embedded of equipment in the arm 6.
The diameter of the what spray gun passages 3 such as cone bottom diameter of branch device 5 is split in taper.
The diameter of linear arm hand-hole is selected according to the following relationship formula:
In the formula: d в х is linear arm inlet eye diameter, mm;
D κ is the spray gun channel diameter, mm;
N is the quantity of linear arm, number.
The mode of operation of this spray gun is following: when the surplus pressure (gauge pressure) that causes in the magnesium feed bin (not shown on the figure) surpasses spray gun and slips in the molten iron during resistance of injection system; The carrier gas supply of connection from the magnesium feed bin to spray gun is inserted into spray gun the degree of depth that reaches a necessity in the molten iron.Connect the metering feeding device (not shown on the figure) of magnesium desulfurizer, particulate state magnesium material just gets into spray gun passage 3 with the pneumatic transport mode, enters into the molten iron melt through two splitter 4, linear arm 6 and replaceable nozzle 7 then.Infeeding and must promptly ending feed behind the magnesium desulfurizer of quantity, from molten iron, propose spray gun, stop carrier gas and supply with.
The main points of this spray gun of declaring patent are following:
In the two splitter, insert a taper and split the branch device;
Cone bottom diameter equals the spray gun channel diameter, and the inclination alpha that the branch device longitudinal axis is split to taper in said scarp equals linear arm half the to spray gun longitudinal axis angle of inclination beta.So just guaranteed that the solid phase particles in the two is equal to each input angle of splitting the branch device, each reflection angle also equates, thereby helps the particle edge and the direction of linear arm parallel axes to move.In the two splitter, replenish and equipped taper and split branch device and some linear arms; Selection that the linear arm is gone into bore dia will make these hand-holes have point of contact at (point of contact) and become has tapering, has just guaranteed that two was evenly distribute basically before getting into arm.The branch of splitting device has been arranged in the two splitter; Make the degree of expansion of spray gun passage after otch reduce to minimum; This helps two not only in two arms; And the distribution in 3,4 even more a plurality of arm is uniformly, makes the speed loss of two reduce to minimum, thereby improved the concentration of particle magnesium in carrier gas.
The linear arm is gone into bore dia and is selected by relational expression
; No matter be in order to make these arm quantity what arranged; All be placed in the splitter; And the hand-hole that makes them has the common point of contact, that is to say, equals in the circumference of spray gun channel diameter at diameter; Cut a regular polygon (positive n limit shape) that n limit arranged, its length of side equals the diameter of linear arm hand-hole.This technical scheme that proposes has guaranteed directly to import to two in the hand-hole of linear arm, that is to say the generation of in injection system, having got rid of situation such as vibration, disturbance and resistance increase.
Tapering α=5～10 of linear arm hand-hole ° can be reduced by the shock resistance of spray gun passage to linear arm transit time, have stablized two velocity of flow before jet is gone out spray gun in arm and in nozzle.When the tapering of hand-hole during greater than α=10 °, the resistance of this section obviously increases, and promptly produces vibration in the injection system.If tapering also is irrational from the structure angle less than α=5 °.
Comprehensive the above can find out, this spray gun of request for utilization patent, can guarantee stable, have very high feeding strength send into molten iron to particulate state magnesium, shorten the whole cycle of handling molten iron.Dispersive is sent into molten iron to magnesium and has been added rational injection parameter, just can guarantee the carrying out of stable technical process, and can pour into more molten iron to hot metal ladle and make under the less situation of freeboard stable carrying out.Meanwhile, the technico-economical comparison of process also improves to some extent, comprises that service life of lance prolongs, and its maintenance cost reduces, and hot metal temperature drop diminishes during the winding-up, and melt improves the specific absorption of magnesium, natural solution the problem that proposes, reached desired result.
Be with being appreciated that, more than about the specific descriptions of the utility model, only be used to the utility model is described and be not to be subject to the described technical scheme of the utility model embodiment.Those of ordinary skill in the art should be appreciated that still and can make amendment or be equal to replacement the utility model, to reach identical technique effect.As long as satisfy the use needs, all in the protection domain of the utility model.
Claims (8)
1. granule magnesium molten iron desulfuring spray gun comprises skeleton (1) and the spray gun passage (3) of being with refractory lining (2); It is characterized in that, be fixed with two splitter (4) in the end of spray gun passage (3); Be fixed with linear arm (6) in the exit of said two splitter (4); In the bottom of said two splitter (4), in two splitter extension, end line correspondence shape arm (6) ingress is fixed with taper and splits branch device (5) in spray gun passage (3).
2. granule magnesium molten iron desulfuring spray gun according to claim 1 is characterized in that: said taper is split branch device (5) for having the right cylinder of tip, and its tip points to spray gun passage (3) direction; Said taper is split branch device (5) tip cone bottom diameter and is equaled spray gun passage (3) diameter.
3. granule magnesium molten iron desulfuring spray gun according to claim 2 is characterized in that: the tip that branch device (5) is split in said taper forms some scarp; The inclination alpha that the branch device longitudinal axis is split to taper in said scarp equals linear arm (6) half the to spray gun longitudinal axis angle of inclination beta.
4. granule magnesium molten iron desulfuring spray gun according to claim 3 is characterized in that: the quantity on said scarp equals the number of linear arm (6), and each scarp is corresponding with the inlet of linear arm (6).
5. granule magnesium molten iron desulfuring spray gun according to claim 4; It is characterized in that: the point of contact, bottom of branch device (5) scarp and barrel portion is split in said taper, and point of contact, the bottom K with spray gun passage (3) eyelet in two splitter extension coincides with linear arm (6) eyelet.
6. granule magnesium molten iron desulfuring spray gun according to claim 5 is characterized in that: the inlet eye diameter of said linear arm (6) is selected by following proportionlity:
In the formula: d в х is linear arm inlet eye diameter, mm;
D κ is the spray gun channel diameter, mm;
N is the quantity of linear arm, number.
7. granule magnesium molten iron desulfuring spray gun according to claim 6 is characterized in that: be fixed with replaceable nozzle (7) in the exit of said linear arm (6).
8. according to the arbitrary described granule magnesium molten iron desulfuring spray gun of claim 1～7, it is characterized in that: on said replaceable nozzle (7), be with fire-resistant bushing pipe (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205430351U CN202465768U (en) | 2011-12-22 | 2011-12-22 | Melted iron desulfurization spray gun utilizing granular magnesium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205430351U CN202465768U (en) | 2011-12-22 | 2011-12-22 | Melted iron desulfurization spray gun utilizing granular magnesium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202465768U true CN202465768U (en) | 2012-10-03 |
Family
ID=46913946
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205430351U Expired - Lifetime CN202465768U (en) | 2011-12-22 | 2011-12-22 | Melted iron desulfurization spray gun utilizing granular magnesium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202465768U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443681A (en) * | 2011-12-22 | 2012-05-09 | 刘东业 | Granulated magnesium molten iron desulphurization spray gun |
| CN103642982A (en) * | 2013-12-24 | 2014-03-19 | 辽宁新邦科技有限公司 | Side-spraying-type molten iron desulphurization device |
-
2011
- 2011-12-22 CN CN2011205430351U patent/CN202465768U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102443681A (en) * | 2011-12-22 | 2012-05-09 | 刘东业 | Granulated magnesium molten iron desulphurization spray gun |
| CN102443681B (en) * | 2011-12-22 | 2013-08-14 | 刘东业 | Granulated magnesium molten iron desulphurization spray gun |
| CN103642982A (en) * | 2013-12-24 | 2014-03-19 | 辽宁新邦科技有限公司 | Side-spraying-type molten iron desulphurization device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121003 Effective date of abandoning: 20130814 |
|
| RGAV | Abandon patent right to avoid regrant |