CN206447899U - Molten metal agitator - Google Patents

Abstract

The utility model belongs to molten iron pretreatment desulfurizing apparatus field, more particularly to a kind of molten metal agitator, and stirring body includes air storage chamber（2）And gas distribution bin（3）；Gas distribution bin（3）It is interior to be provided with Gas injection pipe（4）；Gas injection pipe（4）Upper port and air storage chamber（2）Communicate, its lower port and gas distribution bin（3）Communicate；In gas distribution bin（3）Side wall provided with several Gas injections mouthful（5）；In sleeve pipe（1）It is interior to be provided with main core pipe（10）；In stirring vane（9）Interior central area is provided with distributor（7）；In stirring vane（9）Inside it is transversely provided with branch pipe（11）；Main core pipe（10）And branch pipe（11）Port respectively with distributor（7）Port communicate；Metallic conduction slip ring（8）Signal transmission port and power supply wiring port component（13）Signal transmission port connect.The utility model is simple in construction, and mixing power is strong, and desulfuration efficiency is high.

Description

Molten metal agitator

Technical field

The utility model belongs to molten iron pretreatment desulfurizing apparatus field, more particularly to a kind of molten metal agitator.

Background technology

Developed rapidly as modern industry is produced with scientific and technical, the requirement to steel product quality is increasingly improved.For example, being Steel billet is avoided to produce underbead crack and obtain good surface quality, it is desirable to which the sulfur content of ordinary steel is less than 0.020%；In order to Make structural steel that there is uniform mechanical performance, it is desirable to which sulfur content is less than 0.010% in steel；In order that oil and natural gas delivery pipe, Petroleum refining unit steel, offshore production platform steel, cryogenic steel, medium-thickness ship plate steel and aviation steel etc. have anti-hydrogen induced cracking The impact flexibility of performance, mechanical performance evenly and Geng Gao, silicon steel has good electromagnetic performance, and sheet steel has excellent Deep drawability etc., it is desirable to which sulfur content is less than 0.005% in steel.It is required that the steel of such low-sulfur, with traditional blast furnace continuous casting steel machine Smelt iron a converter steelmaking process be difficult production, only before steel-making plus molten iron pre-desulfurization process, steel-making after add Furnace outer refining process could be produced.Molten iron pre-desulfurization has turned into one of indispensable process of optimization metallurgical production process, it Continuous casting steel machine can be reduced | the coke ratio and raising productivity ratio of ironmaking, reduce lime consumption amount and quantity of slag of steel-making etc., so as to reduce Production cost.

Mainly there are KR methods, RS methods and DO methods in mechanical mixing method desulfurization.KR methods were wide cigarette iron institutes of Nippon Steel in 1963 Start to develop, and industrial production is put into nineteen sixty-five.Used later by NKK and Sumitomo Metal Industries etc..Above-mentioned KR methods profit Molten iron is set to be contacted well with desulfurizing agent with mechanical agitation, desulfuration efficiency is high and stablizes, and can obtain low-sulfur or super-low sulfur iron Water.But, existing KR methods mechanical stirring device, generally existing stirring force direction is single, and mixing power is not enough, can cause some desulfurization Agent, does not participate in desulfurization and has just floated in slag, the insufficient effect that desulfurization is not had still in molten iron of some desulfurization products floating Really, mixing power is weak, causes desulphurization reaction speed slow, desulfuration efficiency is low.

Utility model content

The utility model is intended to overcome the deficiencies in the prior art part and provide a kind of simple in construction, and mixing power is strong, desulfurization The molten metal agitator of efficiency high.

In order to solve the above technical problems, what the utility model was realized in.

A kind of molten metal agitator, including bottom are furnished with the stirring body of stirring vane；Characterized in that, the stirring Body includes air storage chamber and gas distribution bin；Gas injection pipe is provided with the gas distribution bin；The Gas injection pipe it is upper Port is communicated with air storage chamber, and its lower port is communicated with gas distribution bin；Several gases are provided with the side wall of the gas distribution bin It is blown mouth；Sleeve pipe is longitudinally provided with the center of the stirring body；Main core pipe is provided with described sleeve pipe；In the stirring Central area is provided with distributor in blade；Branch pipe is transversely provided with the stirring vane；The main core pipe and branch pipe Port is communicated with the port of distributor respectively；Metallic conduction slip ring is fixed with the top of described sleeve pipe；The metallic conduction One signal transmission port of slip ring connects with main core pipe；Another signal transmission port and power supply wiring of the metallic conduction slip ring The signal transmission port of port assembly connects；It is provided with the outside of the gas distribution bin along distribution bin circumferencial direction is longitudinally fixed Several stirring vanes；Refractory material protective layer is fixed with the stirring body exterior；In the nozzle portion of the branch pipe It is fixed with sleeve pipe.

The utility model is passed through the gas in gas distribution bin by the Gas injection pipe being provided with gas distribution bin, by Runner is blown into nitrogen into molten iron by the Gas injection pipe of gas distribution bin（Or other inert gases）, mixing power is improved, also The temperature of agitating device can be reduced, extends its service life, Sulfur Content in Hot Iron weight content is reduced to target call, realizes iron Water-magnesium desulfurization is efficient, meets clean steel production needs.In addition, the utility model can pass through main core pipe and branch pipe by carrier gas The blowing desulfurization agent into molten iron, desulfurized effect is further strengthened.

The utility model imports electric current, due to accelerating leading for electronics by slipping into molten iron depths in its exit site Enter or export speed, so as to enhance effect of the potential energy to the chemical component of desulphurization reaction.Bubbles of carrier gas is in desulfurizing agent feed zone Effectively stirring, exchanges refining process from dispersity while strengthening fluid kinetic exchange process and is converted into active state Exchange, this helps to whole molten iron space in bag to be attracted to sweetening process, has finally been to speed up desulfuration operations, has protected The utilization rate for reducing temperature loss and improving desulfurizing agent is demonstrate,proved.

Brief description of the drawings

The utility model is described in further detail with reference to the accompanying drawings and detailed description.Protection model of the present utility model Enclose the statement for being not only limited to following content.

Fig. 1 is overall structure diagram of the present utility model.

In figure：1st, sleeve pipe；2nd, air storage chamber；3rd, gas distribution bin；4th, Gas injection pipe；5th, Gas injection mouthful；6th, fire proofed wood Expect protective layer；7th, distributor；8th, metallic conduction slip ring；9th, stirring vane；10th, main core pipe；11st, branch pipe；12nd, sleeve pipe；13rd, it is electric Source Wiring port component；14th, stirring vane.

Embodiment

As illustrated, molten metal agitator includes the stirring body that bottom is furnished with stirring vane 9；The stirring body bag Include air storage chamber 2 and gas distribution bin 3；Gas injection pipe 4 is provided with the gas distribution bin 3；The upper end of the Gas injection pipe 4 Mouth is communicated with air storage chamber 2, and its lower port is communicated with gas distribution bin 3；Several gases are provided with the side wall of the gas distribution bin 3 It is blown mouth 5；Sleeve pipe 1 is longitudinally provided with the center of the stirring body；Main core pipe 10 is provided with described sleeve pipe 1；Institute State central area in stirring vane 9 and be provided with distributor 7；Branch pipe 11 is transversely provided with the stirring vane 9；The main core pipe 10 and port of the port respectively with distributor 7 of branch pipe 11 communicate；Metallic conduction cunning is fixed with the top of described sleeve pipe 1 Ring 8；One signal transmission port of the metallic conduction slip ring 8 connects with main core pipe 10；Another letter of the metallic conduction slip ring 8 Number transmission port connects with the signal transmission port of power supply wiring port component 13；On the outside edge point of the gas distribution bin 3 The circumferencial direction of Distribution Warehouse 3 is longitudinally fixed to be provided with several stirring vanes 14；Refractory material is fixed with the stirring body exterior to protect Sheath 6.The utility model is fixed with sleeve pipe 12 in the nozzle portion of the branch pipe 11.

The utility model is compared with traditional molten iron desulphurization stirring device, it is to avoid carrier gas mixing direction narrow scope, stirring The not enough shortcoming of intensity, realizes 360 degrees omnidirection injection and stirring in molten iron, and stirring intensity is doubled.This practicality is new Type is longitudinally fixed provided with several stirring vanes 14 in the outside of the gas distribution bin 3, can further strengthen stirring for agitating device Mix effect.Stirring vane 14 circumferentially disposed 8.

Slip into the conductive agitating device of molten metal part, it be connected to one of power supply extremely on electric current is guided to injection Mouth region.Another pole of power supply is connected on the electrode being made of high conducting material.

The working method of the utility model equipment is as follows：Ladle equipped with molten iron is placed into after processing position, stirring Device insertion molten iron confesses the carrier gas of strip simultaneously.What it is when agitating device contact melt upper limit is turn-on current in an instant, and Power supply stream system and desulfurizing agent feed system are harmonious afterwards.

Preferred embodiment of the present utility model is the foregoing is only, the utility model is not limited to, for this For the technical staff in field, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle Within, any modification, equivalent substitution and improvements made etc. should be included within protection domain of the present utility model.

Claims (1)

1. a kind of molten metal agitator, it is characterised in that be furnished with stirring vane I including bottom（9）Stirring body；Its feature It is, the stirring body includes air storage chamber（2）And gas distribution bin（3）；The gas distribution bin（3）It is interior to be provided with Gas injection Pipe（4）；The Gas injection pipe（4）Upper port and air storage chamber（2）Communicate, its lower port and gas distribution bin（3）Communicate； The gas distribution bin（3）Side wall provided with several Gas injections mouthful（5）；Longitudinally it is provided with the center of the stirring body Sleeve pipe I（1）；In described sleeve pipe I（1）It is interior to be provided with main core pipe（10）；In the stirring vane I（9）Interior central area is provided with distribution Device（7）；In the stirring vane I（9）Inside it is transversely provided with branch pipe（11）；The main core pipe（10）And branch pipe（11）Port Respectively with distributor（7）Port communicate；In described sleeve pipe I（1）Top be fixed with metallic conduction slip ring（8）；The gold Belong to conducting slip ring（8）A signal transmission port and main core pipe（10）Connect；The metallic conduction slip ring（8）Another signal pass Defeated port and power supply wiring port component（13）Signal transmission port connect；In the gas distribution bin（3）It is outside along point Distribution Warehouse（3）Circumferencial direction is longitudinally fixed to be provided with 8 stirring vanes II（14）；Fire proofed wood is fixed with the stirring body exterior Expect protective layer（6）；In the branch pipe（11）Nozzle portion be fixed with sleeve pipe II（12）.