CN202968616U - Free-style molten iron desulfurization spray gun - Google Patents

Abstract

The utility model belongs to the field of molten iron desulfurization equipment and in particular relates to a free-style molten iron desulfurization spray gun. The free-style molten iron desulfurization spray gun comprises a T-shaped steel tube (1), a spray gun spray tube (2), a framework (3) and a refractory material layer (4), wherein the framework (3) and the refractory material layer (4) are fixedly arranged on the spray gun spray tube (2); the spray gun spray tube (2) is arranged in the refractory material (4); the bottom port of the T-shaped steel pipe (1) is fixedly communicated with the port of a spray gun spray tube (2); a desulfurizing agent hose (5) is fixedly arranged at the transverse port of the T-shaped steel pipe (1); a suspending chain (6) is fixedly arranged on the T-shaped steel tube (1); a holder (7) is fixedly arranged on the suspending chain (6); a lifting frame (8) is fixedly arranged on the holder (7); a horn mouth gasifying chamber (8) is arranged at the lower end of the spray gun spray tube (2); and the length of the suspending chain (6) is 200mm-300mm. The free-style molten iron desulfurization spray gun is capable of improving the mixing and stirring effect of the molten iron and the desulfurizing agent, capable of improving the upward-floating track of the carrier gas flow and capable of improving the desulfurization efficiency and reducing the splashing strength.

Description

A kind of free style molten iron desulfuring spray gun

Technical field

The utility model belongs to the desulfurizing iron apparatus field, relates in particular to a kind of free style molten iron desulfuring spray gun.

Background technology

Injection metallurgy typically refers to the fixed blowing process in industrial widespread use: spray gun is from furnace bottom, and furnace wall and furnace roof all remain static when jetting to the molten bath.The fixedly spray gun of desulfurizing iron has used decades industrial, but fixed blowing process improvable place aspect the kinetics stirring is relatively limited.When spray gun was upwards jetted from furnace bottom, fixed blowing process was unique method, and namely spray gun need be fixed in the flame retardant coating of furnace bottom.Insert winding-up when spray gun from the furnace wall, generally also remain static.

The spray gun blowing process has become one of main method of desulfurizing iron, but has used fixed blowing process improvable place on kinetics mixing condition of decades more limited, the utilization ratio that is not easy further to improve desulfuration efficiency and improves sweetening agent.It is very large that high speed jet and molten iron rock the vibration that makes spray gun, need adopt fixedly spray gun of clamper when winding-up, not only requires the spray gun physical strength high, but also require jacking equipment that stronger supporting capacity is arranged.

The characteristics such as it is large that the static spray gun of existing hot metal pretreatment exists the sweetening agent Spitting intensity, and sweetening agent and molten iron mixed effect are poor, and desulfuration efficiency is low.

Summary of the invention

The utility model is intended to overcome the deficiencies in the prior art part and a kind of mix and blend effect that improves molten iron and sweetening agent is provided, and changes carrier gas stream floating track, the free style molten iron desulfuring spray gun that improves desulfurization degree and Spitting intensity is reduced.

For solving the problems of the technologies described above, the utility model is to realize like this.

A kind of free style molten iron desulfuring spray gun, it comprises T-steel pipe, spray gun jet pipe, is fixedly arranged on skeleton and refractory masses on jet pipe; Within described jet pipe is placed in refractory masses; The bottom port of described T-steel pipe fixedly communicates with the port of jet pipe; The transverse port mouth of described T-steel pipe fixedly is furnished with the sweetening agent flexible pipe; Be fixed with suspension chain on described T-steel pipe.

As a kind of preferred version, the utility model is fixed with clamper on described suspension chain; Be fixed with lifting support on described clamper.

As another kind of preferred version, the utility model is provided with the hydraucone vaporizing chamber in the lower end of described jet pipe.

Further, the length of suspension chain described in the utility model is 200～300mm.

Compared with prior art, the utlity model has following features.

(1) when winding-up, spray gun is in dynamical state.Need not technological process, injection system are changed, there is no clamper on spray gun, the injection gas reactive force in when winding-up by self, spray gun bottom spout can freely move about in molten iron at random.

(2) the utility model spray gun that freely swings turns to the fixing vibrations of spray gun the random walk of spray gun integral body, has reduced the internal stress of spray gun, has extended the work-ing life of spray gun.

(3) under the condition without drive unit, the utility model free style molten iron desulfuring spray gun is to the stirring of one, molten bath.If carrier gas flux is certain, the rifle position is certain, and spray gun can move about in certain scope, changes if spray gun moves about, and illustrates that winding-up or iron bath have change.Static spray gun is sprayed on sweetening agent on the point of fixity at iron bath center, and the utility model spray gun is injected in sweetening agent on a face, and sweetening agent Uniform Dispersion and molten iron are mixed, and has enlarged the hybrid reaction zone, and the continuous and undressed molten iron of sweetening agent is contacted.

(4) under the impact of molten iron, sweetening agent enters molten iron easier the separation with carrier gas under spout, also be subject to mixing of spray gun in the sweetening agent floating-upward process, sweetening agent in molten iron whole blowing down and floating-upward process in all be subject to the impact that swings from spray gun, the reaction times of sweetening agent in molten iron is extended and and molten iron mix better.

(5) through the test of water mould and digital model analysis, the length of the utility model suspension chain 6 is 200～300mm, and it moves about and can slow down many negative impacts, and reaction efficiency is best.

Description of drawings

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Fig. 1 is the utility model one-piece construction schematic diagram.

In figure: 1, T-steel pipe; 2, spray gun jet pipe; 3, skeleton; 4, refractory masses; 5, sweetening agent flexible pipe; 6, suspension chain; 7, clamper; 8, lifting support; 9, hydraucone vaporizing chamber.

Embodiment

As shown in the figure, a kind of free style molten iron desulfuring spray gun, it comprises T-steel pipe 1, spray gun jet pipe 2, is fixedly arranged on skeleton 3 and refractory masses 4 on spray gun jet pipe 2; Within described spray gun jet pipe 2 is placed in refractory masses 4; The bottom port of described T-steel pipe 1 fixedly communicates with the port of spray gun jet pipe 2; The transverse port mouth of described T-steel pipe 1 fixedly is furnished with sweetening agent flexible pipe 5; Be fixed with suspension chain 6 on described T-steel pipe 1.

The utility model is fixed with clamper 7 on described suspension chain 6; Be fixed with lifting support 8 on described clamper 7.The utility model is provided with hydraucone vaporizing chamber 9 in the lower end of described spray gun jet pipe 2.The length of suspension chain 6 described in the utility model is 215mm.

When carrying out desulfuration operations, when needs rifle body freely swings, can be with the tilting mechanism that starts on clamper 7, like this, in the 2 blowing desulfurization agent of spray gun jet pipe, the rifle body also plays the mix and blend effect to molten iron and sweetening agent.Sweetening agent flexible pipe 5 is sent into sweetening agent in spray gun jet pipe 2 from T-steel pipe 1.

Insert from furnace roof at spray gun, when spray gun and furnace roof are gapped, just can realize freely swinging or rotating of spray gun.The ladle of desulfurizing iron and torpedo car are all upper opening formula containers, and furnace roof inserts spray gun swing space, and dynamically the desulfurization of spray gun is used possibility.In identical water model test, compare with fixing spray gun, the contriver finds that rotary spray gun diminishes bubble, and ascent rate is slack-off, and ascent rate is slack-off to diminish with bubble, and the intensity of foaming is relevant with the track that floats.

According to actual needs, the utility model also can be provided with hydraucone vaporizing chamber 9 in the lower end of described spray gun jet pipe 2.There is no according to the submergence of spray gun, sweetening agent to be carried out mechanical stirring at floating-upward process under complicated drive unit, Duoing a direct viewing point that is conducive to produce than static spray gun simultaneously.In when winding-up, spout is in the state of moving about, and sweetening agent sprays into iron bath dispersedly, has enlarged desulfurization reaction zone, relative decrease peripheral liquid phase region, make the desulfurization of whole iron bath more even.Spray gun can further promote desulfurization between slag-iron to the stirring of liquid level slag blanket.

The above is only preferred embodiment of the present utility model, is not limited to the utility model, and for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.

Claims (4)

1. a free style molten iron desulfuring spray gun, is characterized in that, comprises T-steel pipe (1), spray gun jet pipe (2), is fixedly arranged on skeleton (3) and refractory masses (4) on jet pipe (2); Within described jet pipe (2) is placed in refractory masses (4); The bottom port of described T-steel pipe (1) fixedly communicates with the port of jet pipe (2); The transverse port mouth of described T-steel pipe (1) fixedly is furnished with sweetening agent flexible pipe (5); Be fixed with suspension chain (6) on described T-steel pipe (1).

2. free style molten iron desulfuring spray gun according to claim 1, is characterized in that: be fixed with clamper (7) on described suspension chain (6); Be fixed with lifting support (8) on described clamper (7).

3. free style molten iron desulfuring spray gun according to claim 2, is characterized in that: be provided with hydraucone vaporizing chamber (9) in the lower end of described jet pipe (2).

4. free style molten iron desulfuring spray gun according to claim 3, it is characterized in that: the length of described suspension chain (6) is 200～300mm.

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