CN201473562U

CN201473562U - AOD furnace

Info

Publication number: CN201473562U
Application number: CN2009201902394U
Authority: CN
Inventors: 陈光夏; 王爱护
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-08-04
Filing date: 2009-08-04
Publication date: 2010-05-19
Anticipated expiration: 2019-08-04

Abstract

The utility model relates to an AOD furnace, which comprises a furnace body. The inside of the furnace body is provided with at least four blow guns extending from the outside of the furnace body to a furnace core. The utility model has the advantages that: the AOD furnace provided with at least four blow guns can reduce the air feed pressure of each blow gun so as to reduce a reaction force acted on the magnesia-calcia bricks on the positions of the blow guns and greatly increase the service life of the AOD furnace; and moreover, the four blow guns can make the force of the molten steel in the furnace core more uniform, can improve the steel tapping rate and has excellent using effect.

Description

A kind of AOD stove

Technical field

The utility model relates to a kind of AOD stove that is used for Metal Melting.

Background technology

AOD stove (AOD:argon-oxygen decarburization argon oxygen decarburization) also is argon oxygen stove, is mainly used in steel-making.Present problem of AOD stove ubiquity, that is exactly to have only two to blow rifle at most, and is asymmetric.In melting, have only two to blow rifle simultaneously to the steel-making of blowing of the stove heart, so every handle blow the air pressure of supplying gas of rifle need be than higher, the abundant melting of molten steel that could stove is intracardiac.Because the air pressure of supplying gas is than higher, gas is from blowing the rifle ejection, run into molten steel after, blow the rifle place and can produce very big reactive force, like this, the magnesia-calcium brick that just causes blowing the rifle place damages easily.After the magnesia-calcium brick layer that blows the rifle place burnt, whole AOD stove just can not use, and has influenced the work-ing life of AOD stove greatly.In addition, use two and blow rifle, the molten steel discontinuity that stove is intracardiac causes like this that the tapping rate is not high, effect is bad.

Summary of the invention

The utility model will solve the shortcoming of above-mentioned prior art, provide a kind of and be provided with at least four, like this, can reduce the air pressure of supplying gas that every handle blows rifle the AOD stove that blows rifle, blow the reactive force that rifle place magnesia-calcium brick is subjected to thereby reduce, increased the work-ing life of AOD stove greatly.In addition, four handles blow rifle can make the intracardiac molten steel of stove stressed evenly, can make tapping rate height, effective.

The utility model solves the technical scheme that its technical problem adopts: this AOD stove, comprise body of heater, and be provided with the rifle that blows that extends the stove heart by body of heater outward in the body of heater, be provided with in the body of heater and have at least four to blow rifle.

Further, the rifle that blows in the AOD stove is the even number handle, and is symmetrically distributed in twos.Blow rifle in twos symmetry the air blowing effect under, reactive force can partial offset, can reduce and blow the reactive force that rifle place magnesia-calcium brick is subjected to, thereby increase work-ing life of AOD stove.What be symmetrically distributed in twos blows rifle, makes the intracardiac molten steel of stove stressed more even, and tapping rate height is effective.

The beneficial effects of the utility model are: the utility model is provided with at least four the AOD stove that blows rifle, can reduce the air pressure of supplying gas that every handle blows rifle, blows the reactive force that rifle place magnesia-calcium brick is subjected to thereby reduce, and has increased the work-ing life of AOD stove greatly.In addition, four can make the intracardiac molten steel of stove stressed more even blowing rifle, can improve the tapping rate, result of use is good.

Description of drawings

Fig. 1 is the sectional structure synoptic diagram of the utility model AOD stove;

Fig. 2 blows the sectional structure synoptic diagram of rifle for the utility model.Description of reference numerals: body of heater 1, fire brick layer 2, fire-resistant sand bed 3, magnesia-calcium brick layer 4, blow rifle 5, the stove heart 6.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing:

With reference to accompanying drawing: this AOD stove described in the utility model, comprise body of heater 1, be provided with fire brick layer 2, fire-resistant sand bed 3, magnesia-calcium brick layer 4 in the body of heater 1 from outside to inside successively, be provided with in the body of heater by body of heater 1 outer extend the stove heart 6 blow rifle 5, be provided with four in the body of heater 1 and blow rifle 5.And four are blown rifle and are symmetrically distributed in twos.As shown in Figure 1, when stove is started working, blow the 5 continual whiles of rifle to the stove heart 6 delivering gas.Blow interior tube chamber delivering oxygen, the argon gas of rifle 5, the mixed gas of nitrogen, be used for combustion-supporting.Blow the outer tube chamber of rifle 5 and carry argon gas, nitrogen, argon gas, nitrogen are shielding gas, are used for cooling, and protection is blown the rifle gun barrel and do not burnt out.Adopt four the AOD stove that blows rifle, can reduce the air pressure of supplying gas that every handle blows rifle, blow the reactive force that rifle place magnesia-calcium brick is subjected to, increased the work-ing life of AOD stove greatly thereby reduce.In addition, blow rifle in twos symmetry the air blowing effect under, reactive force can partial offset, can reduce and blow the reactive force that rifle place magnesia-calcium brick is subjected to, thereby increase work-ing life of AOD stove.Four that are symmetrically distributed are in twos blown rifle, make the intracardiac molten steel of stove stressed more even, and tapping rate height is effective.

Though the utility model illustrates and describes by the reference preferred embodiment,, those skilled in the art should understand, and in the scope of claims, can do the various variation on form and the details.

Claims

1. an AOD stove comprises body of heater (1), is provided with in the body of heater (1) by what body of heater extended the stove heart (6) outward to blow rifle (5), it is characterized in that: be provided with at least four in the body of heater (1) blowing rifle (5).

2. AOD stove according to claim 1 is characterized in that: the described rifle (5) that blows is the even number handle, and is symmetrically distributed in twos.