CN201801537U - Single blow grain magnesium desulfurizing device for molten iron - Google Patents
Single blow grain magnesium desulfurizing device for molten iron Download PDFInfo
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- CN201801537U CN201801537U CN2010205376884U CN201020537688U CN201801537U CN 201801537 U CN201801537 U CN 201801537U CN 2010205376884 U CN2010205376884 U CN 2010205376884U CN 201020537688 U CN201020537688 U CN 201020537688U CN 201801537 U CN201801537 U CN 201801537U
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- molten iron
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Abstract
The utility model discloses a single blow grain magnesium desulfurizing device for molten iron, which comprises a blowing tank (1) and a material feeder that are successively connected from top to bottom. The bottom of the material feeder is connected with a coaxial rotation spray gun (8). The gun body of the coaxial rotation spray gun (8) has a double-layer structure which is obtained through nesting a first inner pipe (16) with a first outer pipe (15). The upper segment of the rotation spray gun (8) is connected with the lower segment through a flange (17) which is provided with a central hole (17-a). A plurality of holes (17-b) are uniformly outside the central hole along the circumference. The central hole is communicated with an inner pipe (16) of the spray gun. The holes (17-b) on the circumference are communicated with a chamber which is formed by the first inner pipe (16) and the first outer pipe (15). The desulfurizing device has the following advantages: realization of continuous, uniform and accurate desulfurizing agent into the molten iron; improved utilization rate and desulfurizing speed of the desulfurizing agent; reduced splash of molten iron; prolonged service life of the spray gun; reduced production and maintenance amount in later period, and good generalization prospect.
Description
Technical field
The utility model relates to a kind of sweetener, and particularly relating to particle magnesium is the desulfurizing iron device of sweetening agent.
Background technology
Along with the user to improving constantly that steel product quality requires, the molten iron pretreatment desulfurizing technology of economical and efficient is one of key link that realizes high efficiency, low cost Clean Steel production platform.The ultimate principle of desulfurizing iron is to utilize element or the compound bigger than iron with the avidity of sulphur, adds in the molten iron to capture the sulphur in the iron sulphide, make it to be converted into more stable, be insoluble to molten iron and the sulfide that enters slag is removed.The single-spray particle magnesium desulfurization technology be with the particle magnesium of passivation accurately, stable, evenly, in molten iron, jet continuously.At present, the single-spray particle magnesium desulfurizer is generally by injection system, gun system, feeder system, airing system, control and instrumentation system are formed automatically.Wherein, the core of injection system be by material feeder guarantee winding-up jar can be accurately, stable, the particle magnesium of in molten iron, jetting evenly, continuously, otherwise cause magnesium short period of time vigorous reaction to cause a large amount of splashes of molten iron for the inhomogeneous meeting of magnesium, iron loss increases, simultaneously, too concentrate on the magnesium that does not have enough time to have reacted and float to surface combustion, the utilization ratio of magnesium descends, and desulfurization degree descends, and forms density stream or group's stream in transport pipe easily, cause stifled rifle, reduce the operating rate and the serviceability rate of equipment; In gun system, existing spray gun principal mode is single winding-up mouthful band back taper vaporizing chamber structure, this spray gun exists problems, on the one hand because the spray gun bottom has vaporizing chamber, spray gun teetertotters easily in blowing desulfurization, sweetener is brought disadvantageous effect, on the other hand, the magnesium grain concentrates gasification back volume to expand rapidly at vaporizing chamber, magnesium steam enters the molten iron from vaporizing chamber can produce serious splash, concentrated gasification has also reduced the contact area of magnesium steam and molten iron, makes that the utilization ratio of magnesium is on the low side; In addition, owing to the constructional feature of spray gun, easily adhere to the slag iron of splash on the vaporizing chamber inwall, even stop up the winding-up mouth, the workload that has increased cleaning and safeguarded.
Summary of the invention
The purpose of this utility model provides a kind of not with the desulfuration of single-spray particle magnesium molten iron equipment of vaporizer.
To achieve these goals, by the following technical solutions:
A kind of desulfuration of single-spray particle magnesium molten iron device, comprise the winding-up jar and the material feeder that connect successively from top to bottom, the material feeder bottom is connected to rotary spray gun by transfer lime, it is characterized in that: described coaxial rotary spray gun rifle body is the bilayer structure of the first interior pipe and the nested composition of first outer tube, makes spray gun form two independent medium transport passage; Pipe be used to jet particle magnesium and carrier gas thereof in first; The cavity that pipe forms in the outer sleeve and first is used to the protective gas of jetting.
Coaxial rotary spray gun epimere is connected by flange with hypomere, and flange is provided with centre hole, some holes that are uniformly distributed along the circumference outside the centre hole, and centre hole communicates with pipe in the spray gun, and the cavity that the pipe and first outer tube form in the circumferential apertures and first communicates;
The winding-up mouth of coaxial rotary spray gun constitutes by pipe is nested in second outer tube and second, and interior pipe communicates with pipe in first, and the cavity that the pipe and first outer tube form in the outer tube and first communicates.
Moment of torsion when rotating in order to transmit spray gun, described flange is provided with a plurality of equally distributed keys.
The pipe particle magnesium that is used to jet in second; The gap of pipe is used for winding-up protection gas in second outer tube and second, in order to make protection gas spray in the molten iron with very high speed, described in the outer end of pipe, be designed to have the protection gas intensifier ring of tapering.
Rotary spray gun hypomere bottom is equipped with a plurality of winding-ups mouthful, and the winding-up mouth is along spray gun circumferential direction uniform distribution, its axis and the angled α of spray gun axis, 20 °≤α≤90 °; For making the abundant dispersion of magnesium grain in molten iron, a plurality of winding-ups mouthful spray gun that is positioned at the rotary spray gun bottom face exports the diameter of its distribution circumference greater than 400mm.
Smooth and easy in order to ensure feed, the volume of winding-up jar is less than 1
, reduce the stock column pressure that the glassware cylinder is born with this.
Accurate for blanking, described cylinder surface is provided with the metering feeding trough of multi-row staggered distribution, and it is equal with respect to the dislocation amount of adjacent row's metering feeding trough that every row measures feeding trough.
This kind cylinder all equates at the cubic capacity of the metering feeding trough that any one angle same scope comprises, and therefore by the rotation of cylinder, can realize even feeding, and feeding coal is directly proportional with the number of turns and angle that cylinder rotates.
The width of material receiving area T is at least 3 times that measure the feeding trough groove width in the material feeder main body.
In order to guarantee not leak material, the width of seal area A and seal area B should be greater than the groove width of metering feeding trough in the material feeder main body, and the gap of seal area A and seal area B piece housing and cylinder should be less than the particle diameter of material.
In order to prevent that material from adhering on the cylinder, as further optimization, the side of described material feeder main body is provided with the gas purging device that leads to cylinder surface.
Described gas purging device comprises the purge hole that sealing is arranged on the surge chamber on the material feeder main body cover and laterally evenly arranges on the material feeder main body cover.
In order to prevent that effectively material particles and dust from entering bearing, as further optimization, bearing is provided with the hermetic seal structure, and bearing is provided with hermetic seal pressurized gas passage near a side of cylinder.
Material feeder main body top also is provided with the material feeder top linkage section that matching with the material feeder main body in the lower end, matches with the winding-up jar in the upper end.
Rotary spray gun is divided into two sections, two sections connect by flange, the rotary spray gun epimere hangs on the spray gun lift cart and is connected with protection letter shoot road with particle magnesium by swivel joint, and under the drive of transmission mechanism, can realize the rotation of whole spray gun, rotary spray gun hypomere outside surface is with refractory materials, the rotary spray gun bottom is provided with divider, the desulfuration of single-spray particle magnesium molten iron rotary spray gun rifle body that does not contain vaporizing chamber is the bilayer structure of the first interior pipe and the nested composition of first outer tube, make spray gun form two independent medium transport passage, pipe be used to jet particle magnesium and carrier gas thereof in first, the cavity that pipe forms in first outer tube and first is used to the protective gas of jetting, when the two-way medium arrives spray gun hypomere bottom, being assigned with device is assigned to a plurality of winding-ups and mouthful is blown in the molten iron, protection gas sprays in the molten iron by second interior pipe of the mouth of jetting and the circumferential weld cavity between second outer tube via divider, and particle magnesium and carrier gas thereof then spray in the molten iron via the second interior pipe of divider by the winding-up mouth; Rotary spray gun hypomere bottom is equipped with a plurality of winding-ups mouths, the winding-up mouth is along spray gun circumferential direction uniform distribution, its axis and the angled α of spray gun axis, 20 °≤α≤90 °, because the second interior pipe of winding-up mouth and the circumferential weld cavity of second outer tube dwindle gradually in a winding-up mouthful terminus area, make shielding gas in by this section process, be accelerated, thereby spray in the molten iron with very high speed, between winding-up mouthful tube wall and particle magnesium, formed gas shield together so on the one hand, can prevent effectively that the soft heat of being heated of magnesium grain from sticking to winding-up later on and mouthful go up to stop up winding-up mouthful, the gas of ejection adds that the pole of rotation the earth of spray gun self has increased the mixing effect of molten iron at a high speed on the other hand, make the dynamic conditions of desulfurization be greatly improved, protect gas can also play certain cooling effect simultaneously; The spray gun branch is gone up hypomere and is made respectively; the spray gun epimere is connected by flange with hypomere; flange has two independently delivery medium passages; the centre hole particle magnesium that is used to jet passes through; some circumferential apertures that the centre hole outside is evenly arranged along circumference are passed through for protection gas; between the passage and between the passage and the external world tightness system is installed; design has a plurality of equally distributed keys on the flange; transmit moment of torsion when being used for the spray gun rotation; such design form has reduced the manufacturing transport difficulty of spray gun; simultaneously because hypomere is compared shortening greatly with whole spray gun length; thereby can be easily the refractory materials of hypomere be carried out special processes and handle; thereby improve the work-ing life of spray gun greatly, make things convenient for the replacing of spray gun, reduce use cost.
The utility model is by the cancellation vaporizing chamber, the magnesium grain is sprayed in the molten iron by a plurality of winding-ups mouthful homodisperse, magnesium steam and molten iron contact area have been increased, help the carrying out that react, the splash that produces when effectively reducing the magnesium gasification, by rare gas element and rotary spray guns such as nitrogen-blow or argon gas, increase the gas stirring effect of molten iron simultaneously, improve the dynamic conditions of desulfurization.This desulfurizer realizes that sweetening agent enters molten iron continuously, evenly, accurately, improves the rate of utilization and the desulfurization rate of sweetening agent, increases the work-ing life of spray gun, reduces the obstruction that spray gun oral area dry slag causes, and alleviates later stage production maintenance, reduces desulphurization cost.
Metering feed of the present utility model is evenly accurate, can guarantee the steady of feed, the gas purging device has avoided material to adhere on the cylinder, influences the effect of feed, specially designed gas-tight sealing system of rotaty prevents that effectively material particles and dust from entering bearing, prolongs the work-ing life of equipment.
Description of drawings
Fig. 1 is the utility model embodiment one-piece construction synoptic diagram;
Fig. 2 is a material feeder agent structure synoptic diagram among Fig. 1;
Fig. 3 is the structural representation of Fig. 2 intermediate roll and bearing connection portion;
Fig. 4 is upper and lower section joint flange structural representation of spray gun among Fig. 1;
Fig. 5 is spray gun hypomere bottom divider and a winding-up mouth structure synoptic diagram among Fig. 1;
Fig. 6 is the enlarged view of D among Fig. 2;
Fig. 7 is the structural representation in gas purging hole among Fig. 2;
Fig. 8 is the expansion synoptic diagram of Fig. 1 intermediate roll surface metrology feeding trough.
Embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described further:
To shown in Figure 8, the desulfuration of single-spray particle magnesium molten iron device comprises winding-up jar 1, material feeder top linkage section 2, material feeder main body 3, material feeder bottom linkage section 4, transfer lime 7, coaxial rotary spray gun 8, winding-up gas bag 9 and purges gas bag 10 as Fig. 1.Material feeder top linkage section 2 and material feeder bottom linkage section 4 are installed on the material feeder main body 3, material feeder top linkage section 2 is connected with winding-up jar 1 by flange, material feeder bottom linkage section 4 is connected with transfer lime 7, realizes the purpose that the coaxial rotary spray gun 8 of the desulfuration of single-spray particle magnesium molten iron that does not contain vaporizing chamber is realized desulfurizing iron that is transported to of material afterwards by carrier gas.
Winding-up gas bag 9 is as the source of the gas source of winding-up jar 1, transfer lime 7 and rotary spray gun 8 shielding gas; Purge the source of the gas source of gas bag 10 as material feeder cylinder 5 purging systems and roller bearings 11 hermetic seals; Purge the gaseous tension of the gaseous tension of gas bag 10 greater than winding-up gas bag 9.
Material feeder is divided into bottom linkage section 4 three parts of material feeder top linkage section 2, material feeder main body 3 and material feeder, and material feeder upper and lower part linkage section is installed on the material feeder main body 3.The upper end of top linkage section 2 is a rounded section, matches with winding-up jar 1, and the lower end is the square-section, matches with material feeder main body 3; Material feeder top linkage section 2 is connected with storage tank 1 by flange, and material feeder bottom linkage section 4 is connected with material conveying pipe, realizes the conveying of material by carrier gas.
Even in order to ensure to the glassware feed, the distribution of metering feeding trough should be satisfied certain requirement above the cylinder 5, and the metering feeding trough is many rows and distributes on cylinder, and present embodiment is an example with three rows.Each row metering feeding trough all equates with dislocation amount h of adjacent row's metering feeding trough, thereby the spacing of the adjacent metering feeding trough of same row is 3h, and the length of whole metering feeding trough is that the girth of cylinder is the integral multiple that same row upward measures feeding trough spacing 3h.The cylinder arbitrfary point that is this kind regular distribution all equates at the total area of the metering feeding trough that the scope of same width along the circumferential direction comprises.Thereby can guarantee that the angle that feeding coal and cylinder turn over is directly proportional, control feeding coal and delivery rate thereby can rotate by index drum.The speed range of cylinder 5 is between 3-30 r/min, and rotating speed is too high then can be owing to material can't be full of the accuracy that the metering feeding trough influences the metering feed at short notice.
Material enters in the roller bearings 11 by cylinder and material feeder shell can quicken the wearing and tearing of bearing, reduce the work-ing life of feed valve, increase maintenance cost, though existing material feeder has designed sealing-ring, but because material particles has certain rigidity, so sealing-ring is difficult to play the effective seal effect.This use is novel to have increased the hermetic seal design on the basis of adopting the conventional seals method, blanket gas enters space between roller shaft and the housing 3-a by hermetic seal with pressurized gas passage 13, make and keep malleation in the bearing bore, after be blown into material feeder inner chamber 14, stop material particles and dust to enter bearing 11 and then damage bearing like this, improved work-ing life.
Coaxial rotary spray gun is divided into spray gun epimere and spray gun hypomere two portions.Connect by flange 17 between epimere and the hypomere.The concrete structure of flange 17 as shown in Figure 4, flange is provided with centre hole 17-a, the centre hole outside some circumferential apertures 17-b that are uniformly distributed along the circumference.Pipe 16 communicates in the centre hole and first, is used for by winding-up magnesium grain and carrier gas thereof; The cavity that pipe 16 and first outer tube 15 forms in the circumferential apertures 17-b and first communicates, and is used for by protection gas.Be respectively equipped with sealing-ring 17-c and sealing-ring 17-d between two passages and between the passage and the external world, design has a plurality of equally distributed keys 18 on the flange 17, transmits moment of torsion when being used for the spray gun rotation.
As shown in Figure 5; rotary spray gun hypomere bottom is equipped with divider 19 and winding-up mouth 20; divider 19 sprays into particle magnesium and protection gas shunting in the molten iron along the equally distributed winding-up of circumference mouthfuls 20 by several, the axis of winding-up mouth axis and the spray gun α that has a certain degree, 20 °≤α≤90 °.Spray gun hypomere outside surface is coated with refractory materials 21, and the V-arrangement riveting muscle 22 and the gusset that are welded on the spray gun gun barrel can make refractory materials more firm, improves the work-ing life of spray gun.The same with the spray gun gun barrel, the winding-up mouth also is made of the two-layer steel pipe of pipe 20-b in the second outer tube 20-a and second.The pipe 20-b particle magnesium that is used to jet communicates with pipe 16 in first in second; Cavity in the second outer tube 20-a and second between pipe 20-b is used for winding-up protection gas, communicates with the cavity of 16 formation of pipe in first outer tube 15 and first.Protection gas enters the winding-up mouth, the cavity in the second outer tube 20-a and second between the pipe 20-b by the ring groove in divider 19 outsides and the hole of trench bottom.There is certain tapering the outer end of managing 20-b in second, makes protection gas can be accelerated in by winding-up mouthful end like this, sprays in the molten iron with very high speed.
The above; only be embodiment of the present utility model; be not to any pro forma restriction of the present utility model; any those skilled in the art; in the scope that does not break away from technical solutions of the utility model; when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations; in every case be not break away from the technical solutions of the utility model content; to any simple modification, equivalent variations and modification that above embodiment did, all still belong to the scope of technical solutions of the utility model protection according to the utility model technical spirit.
Claims (11)
1. desulfuration of single-spray particle magnesium molten iron device, comprise the winding-up jar (1) and the material feeder that connect successively from top to bottom, the material feeder bottom is connected to coaxial rotary spray gun (8) by transfer lime (7), it is characterized in that: described coaxial rotary spray gun (8) rifle body is the bilayer structure of managing (16) and the nested composition of first outer tube (15) in first;
Rotary spray gun (8) epimere is connected by flange (17) with hypomere, flange (17) is provided with centre hole (17-a), some holes (17-b) are uniformly distributed along the circumference outside the centre hole, centre hole communicates with pipe (16) in the spray gun, and the cavity that pipe (16) and first outer tube (15) form in the circumferential apertures (17-b) and first communicates;
The winding-up mouth (20) of coaxial rotary spray gun (8) is by pipe (20-b) nested formation in second outer tube (20-a) and second, in in the pipe (20-b) and first pipe (16) communicate, the cavity of managing the formation of (16) and first outer tube (15) in the outer tube (20-a) and first communicates.
2. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 1, it is characterized in that: described flange (17) is provided with a plurality of equally distributed keys (18).
3. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 2, it is characterized in that: the outer end of pipe (20-b) has tapering in described.
4. according to claim 2 or 3 described desulfuration of single-spray particle magnesium molten iron devices, it is characterized in that: coaxial rotary spray gun (8) hypomere bottom is equipped with a plurality of winding-ups mouthful (20), jet mouthful (20) along spray gun circumferential direction uniform distribution, its axis and the angled α of spray gun axis, 20 °≤α≤90 °; The spray gun that is positioned at a plurality of winding-up mouths of rotary spray gun (8) bottom face exports the diameter of its distribution circumference greater than 400mm.
5. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 4, it is characterized in that: the volume of described winding-up jar (1) is less than 1m
3, reduce the stock column pressure that glassware cylinder (5) is born with this, guarantee that feed is smooth and easy.
6. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 5, it is characterized in that: described cylinder (5) surface is provided with the metering feeding trough of multi-row staggered distribution, and it is equal with respect to the dislocation amount of adjacent row's metering feeding trough that every row measures feeding trough.
7. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 6, it is characterized in that: the width of the interior material receiving area T of material feeder main body (3) is at least 3 times of metering feeding trough groove width.
8. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 7, it is characterized in that: the width of interior seal area A of material feeder main body (3) and seal area B should be greater than the groove width of metering feeding trough, and the gap of seal area A and seal area B piece housing and cylinder (5) should be less than the particle diameter of material.
9. described according to Claim 8 desulfuration of single-spray particle magnesium molten iron device is characterized in that: the side of described material feeder main body (3) is provided with the gas purging device (6) that leads to cylinder (5) surface.
10. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 9, it is characterized in that: described gas purging device (6) comprises the purge hole that sealing is arranged on the surge chamber on material feeder main body (3) shell and laterally evenly arranges on material feeder main body (3) shell.
11. according to the described desulfuration of single-spray particle magnesium molten iron device of claim 10, it is characterized in that: have bearing (11) between cylinder (5) and the housing (3-a), described bearing (11) is provided with hermetic seal pressurized gas passage (13) near a side of cylinder (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205376884U CN201801537U (en) | 2010-09-21 | 2010-09-21 | Single blow grain magnesium desulfurizing device for molten iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205376884U CN201801537U (en) | 2010-09-21 | 2010-09-21 | Single blow grain magnesium desulfurizing device for molten iron |
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| Publication Number | Publication Date |
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| CN201801537U true CN201801537U (en) | 2011-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010205376884U Expired - Fee Related CN201801537U (en) | 2010-09-21 | 2010-09-21 | Single blow grain magnesium desulfurizing device for molten iron |
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| CN (1) | CN201801537U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256102A (en) * | 2014-07-16 | 2016-01-20 | 鞍钢股份有限公司 | Blowing and stirring integrated type molten iron pretreatment desulphurization device and method |
| CN105274271A (en) * | 2015-10-20 | 2016-01-27 | 武汉钢铁(集团)公司 | Nozzle anti-blocking spray gun for molten iron blowing desulfurization |
| CN108788027A (en) * | 2018-06-23 | 2018-11-13 | 共享装备股份有限公司 | The spheroidization device and spheronization process of spheroidal graphite cast-iron |
| CN112808991A (en) * | 2020-12-27 | 2021-05-18 | 上海交通大学安徽(淮北)陶铝新材料研究院 | In-situ autogenous aluminum matrix composite material system with permanent magnet stirring function |
-
2010
- 2010-09-21 CN CN2010205376884U patent/CN201801537U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256102A (en) * | 2014-07-16 | 2016-01-20 | 鞍钢股份有限公司 | Blowing and stirring integrated type molten iron pretreatment desulphurization device and method |
| CN105274271A (en) * | 2015-10-20 | 2016-01-27 | 武汉钢铁(集团)公司 | Nozzle anti-blocking spray gun for molten iron blowing desulfurization |
| CN105274271B (en) * | 2015-10-20 | 2017-09-19 | 武汉钢铁有限公司 | Molten iron spraying desulfurization spraying spout anticlogging spray gun |
| CN108788027A (en) * | 2018-06-23 | 2018-11-13 | 共享装备股份有限公司 | The spheroidization device and spheronization process of spheroidal graphite cast-iron |
| CN112808991A (en) * | 2020-12-27 | 2021-05-18 | 上海交通大学安徽(淮北)陶铝新材料研究院 | In-situ autogenous aluminum matrix composite material system with permanent magnet stirring function |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20140921 |
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