CN201024185Y

CN201024185Y - Slag line elastic gasket iron water pretreatment oxygen blowing blast gun

Info

Publication number: CN201024185Y
Application number: CNU2006200483417U
Authority: CN
Inventors: 沈建业; 周日新; 张耀璜; 滕秋明; 徐建清
Original assignee: SHANGHAI KAIBAO REFRACTORY MATERIAL CO Ltd
Current assignee: SHANGHAI KAIBAO REFRACTORY MATERIAL CO Ltd
Priority date: 2006-11-30
Filing date: 2006-11-30
Publication date: 2008-02-20
Anticipated expiration: 2016-11-30

Abstract

The utility model relates to an improvement of an oxygen blowing spray gun, which is used for desilication, desulfurization and dephosphorization during hot iron preconditioning. A slag line elastic support ring hot iron preconditioning oxygen blowing spray gun consists of a seamless steel pipe gun core 3, a layer of iron wire packet network 4 that is wound outside and a refractory material 2 which is provided outermost; the refractory material layer at the slag line is thickened. The utility model is characterized in that the slag line part B outside the steel pipe gun core 3 and lengthened parts on two sides of the slag line B between the steel tube and the original iron wire packet network 1 are provided with an elastic iron wire support ring 1, the internal diameter of which is slightly bigger than the diameter of the steel pipe 3. As the iron wire packet network and the elastic iron wire support ring are fixed between the externally enwrapped materials, the comprehensive strength of refractory materials is better, thereby effectively controlling ring-shaped cracks caused under high temperature of the refractory materials, decreasing melting damage, cracking the refractory materials of the spray gun at part and hole punching of the steel pipe, lengthening the service life of the spray gun.

Description

Slag line elasticity gasket ring hot metal pretreatment oxygen blast spray gun

Technical field

The utility model relates to steel-smelting technology, specifically refers to the improvement to the oxygen blast spray gun that carries out dephosphorization, desulfurization, desiliconization processing in the hot metal pretreatment process.

Background technology

Hot metal pretreatment spray gun is to be used for steel mill the molten iron of former process is carried out dephosphorization, desulfurization, the pretreated operational tool of desiliconization.Existing oxygen blast spray gun, the general weldless steel tube that adopts is made rifle core 3, be tied with the iron wire bag net 4 of one deck outward as the refractory materials skeleton, at outermost layer pouring fireproof material 2, and to the thickening of the refractory materials of slag lining (during operation and molten iron face contact site), utilize and do not wait strong principle of design, make to thicken position intensity increase.But because when the spray gun oblique cutting was gone into the molten iron winding-up, it was big to thicken the position increasing diameter, has strengthened the thermograde between anti-material and the steel pipe, make the anti-material of slag lining annular crack occur, cause anti-material to melt damage, cracking, so that the spray gun core perforating steel pipe, work-ing life influenced.

Summary of the invention

The purpose of this utility model is: propose a kind of slag line elasticity gasket ring hot metal pretreatment oxygen blast spray gun, be prone to the annular crack of anti-the material with the slag lining that overcomes existing spray gun, anti-material melts the shortcoming of damage, cracking and spray gun core perforating steel pipe.

The technical solution of the utility model is: a kind of slag line elasticity gasket ring hot metal pretreatment oxygen blast spray gun, by weldless steel tube rifle core 3, be tied with one deck iron wire bag net 4 outward, outermost layer is a refractory masses 2, and the refractory masses of slag lining thickened, it is characterized in that: slag lining B outside steel pipe rifle core 3 and extension site, both sides thereof, in the middle of steel pipe and former iron wire bag net 4, be provided with one section elasticity iron wire gasket ring 1, this iron wire gasket ring 1 internal diameter is slightly larger than steel pipe 3 diameters.

The iron wire diameter of described elasticity iron wire gasket ring 3 is 2.5-3.5mm, and the number of turns is the 8-15 circle, and width is 500-1000mm.

The thickness of described iron wire bag net 4 is 0.3-0.4mm.

The described outer field thickness of anti-the material, from slag line far-end thinnest part 〉=8mm, the thickest slag line place≤32mm, the rounded or hexagon of its cross section.

The utility model has the advantages that: because iron wire bag net and elasticity iron wire gasket ring are fixed on outer wrapping up in the middle of the anti-material, make the comprehensive strength of anti-the material better, be enough to contend with in the reality winding-up is used since the thermograde difference between steel pipe and the anti-material to pulling force that anti-material produced, thereby effectively controlled the ring dress crackle that anti-material at high temperature produces, that reduces that the anti-material of spray gun position occurs melts damage, cracking, perforating steel pipe, has increased the work-ing life of spray gun.

Description of drawings

Fig. 1 is the structural representation of oxygen blast spray gun of the present utility model;

Fig. 2 is the longitudinal section of Fig. 1;

Fig. 3 is the B-B sectional view of Fig. 2.

Embodiment

Now the utility model is described in further detail in conjunction with an embodiment and accompanying drawing thereof.

Fig. 1, Fig. 2 and Fig. 3 are a kind of synoptic diagram that is used for hot metal pretreatment spray gun.Its rifle core 3 is the steel pipe of 4.4-4.7m for length, and the rifle head is slightly crooked.At the slag lining (position that spray gun contacts with the molten iron face when referring to operate, generally from the about 1.5m of rifle head place) and both sides (referring in the scope of each 0.5m of slag lining both sides) outside wrap up in the about 3mm of an iron leg filament diameter, the number of turns is that 10 circles, width are the elasticity iron wire gasket ring 1 of 800mm, iron wire gasket ring 1 outsourcing one deck is as the iron wire bag net 4 of the skeleton of refractory castable, the about 0.35mm of wire netting thickness, outermost one deck is the refractory casting bed of material 2, its thickness is, from the about 9mm of the thinnest part of slag line far-end, the thickest about 30mm in slag line place, the rounded or hexagon of cross section.

Claims

1. a slag line elasticity gasket ring hot metal pretreatment oxygen blast spray gun by weldless steel tube rifle core (3), is tied with one deck iron wire bag net (4) outward, and outermost layer is refractory masses (2), and the refractory masses of slag lining is thicker, it is characterized in that:

Slag lining outside steel pipe rifle core (3) and both sides thereof, middle in steel pipe and former iron wire bag net (4) are provided with one section elasticity iron wire gasket ring (1), and this iron wire gasket ring (1) internal diameter is slightly larger than steel pipe (3) diameter.

2. slag line elasticity gasket ring hot metal pretreatment oxygen blast spray gun according to claim 1, it is characterized in that: the iron wire diameter of described elasticity iron wire gasket ring (3) is 2.5-3.5mm, and the number of turns is the 8-15 circle, and width is 500-1000mm.

3. slag line elasticity gasket ring hot metal pretreatment oxygen blast spray gun according to claim 1, it is characterized in that: the thickness of described iron wire bag net (4) is 0.3-0.4mm.

4. slag line elasticity gasket ring hot metal pretreatment oxygen blast spray gun according to claim 1 is characterized in that the thickness of the described outer field layer of anti-material the (2) is: from slag line far-end thinnest part 〉=8mm, and the thickest slag line place≤32mm; Rounded or the hexagon of its cross section.