Plug-in type molten iron slag blowing spray gun

A plug-in, spray gun technology, applied in the field of plug-in molten iron slag blowing spray guns, can solve problems such as unsystematic research on the mechanism of top gun blowing and slag removal, affecting the research on the structure design of the spray gun, and crisis safe operation of molten iron tanks, etc., to achieve improvement The effect of blowing slag, improving the high temperature damage resistance, and strengthening the effect of inhibition and guiding

Active Publication Date: 2017-07-21
武汉钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the research on the mechanism of slag removal by top gun air blowing is not systematic at home and abroad. The mechanism of slag removal only stays in the driving effect of the kinetic energy of air blowing on the liquid surface slag, and does not involve the influence of the jet flow field, which affects the design and research of the spray gun structure. , it is also difficult to systematically explain the jet flow field on the wear of the working lining of the molten iron tank wall and the gun lining of the spray gun, and the influence of the jet flow field on the fluctuation of the liquid level and the slag entrainment of the molten iron
For molten iron top lance air blowing and slag removal, the technical and economic indicators of slag removal involve slag removal efficiency, removal cleanliness, iron loss of slag removal, life of spray gun, life of molten iron tank, etc., especially the life of molten iron tank, uneven wear of tank wall It will lead to a substantial increase in the consumption of refractory materials, and at the same time, it will also endanger the safe operation of the molten iron tank

Method used

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  • Plug-in type molten iron slag blowing spray gun
  • Plug-in type molten iron slag blowing spray gun
  • Plug-in type molten iron slag blowing spray gun

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Such as figure 1 , 2 Shown in and 5: a plug-in molten iron slag blowing spray gun, including a connecting section 1 and a spray gun main body 3 connected in sequence, and a splash-proof disk 2 perpendicular to the spray gun main body 3 is connected between the connecting section 1 and the spray gun main body 3 , with the centerline plane of the spray gun body 3 as the symmetry plane, the damper vane 4 is symmetrically arranged, the connecting section 1 is composed of the connecting piece 1.1 and the core tube 5, the splash-proof disk 2 includes the core tube 5, and the outer wall of the core tube 5 A metal disc 2.1 perpendicular to the core tube 5 is provided, the lower surface of the metal disc 2.1 is evenly welded with a V-shaped anchor 6, and the lower surface of the metal disc 2.1 and the V-shaped anchor 6 are poured and wrapped with a refractory castable lining 7 , the spray gun main body 3 includes a core tube 5, and the outer wall of the core tube 5 is provided ...

Embodiment 2

[0045] Such as figure 1 , 3 , Shown in 6: a kind of plug-in type hot metal slag removal blowing spray gun, compared with embodiment 1, the difference of spray gun structure is:

[0046]The thickness d of the damper vane 4 shrinks inwards and thins gradually along the width direction on the front surface, and the rear surface is flat. Others are the same as in the embodiment, and the usage method is also the same as in the first embodiment.

Embodiment 3

[0048] Such as figure 1 , 4 , shown in 5: compared with embodiment 1, a kind of hot metal slag removal and air blowing spray gun differs in the structure of the spray gun in that: the spray gun main body 3 is an arc-shaped curved structure toward the tank wall behind the molten iron from top to bottom, and the flow control flap 4 Together with the spray gun main body 3, it also has an arc-shaped bending structure towards the tank wall behind the molten iron. Other is identical with embodiment, and using method is also identical with embodiment 1.

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Abstract

The invention discloses a plug-in molten iron slag slag blowing spray gun, which comprises a connecting section and a spray gun main body connected in sequence, and a splash-proof disk perpendicular to the spray gun main body is connected between the connecting section and the spray gun main body. The centerline plane of the main body is a symmetric plane, and damper vanes are symmetrically arranged. The splash-proof disc includes a core tube, and a metal disc perpendicular to the core tube is arranged on the outer wall of the core tube. The surface is uniformly welded with V-shaped anchors, and the lower surface of the metal disc and the V-shaped anchors are poured and wrapped with refractory castable linings. The main body of the spray gun includes a core tube, and the outer wall of the core tube is provided with damping fins plate, the damper fin includes a metal anchor member vertically welded on the outer wall of the core tube and a refractory castable lining wrapped on the outer wall of the core tube and the metal anchor member of the wing plate; Convenience, stable operation, less erosion and wear on the molten iron tank wall, low iron loss during slag removal, and short slag removal time.

Description

technical field [0001] The invention relates to the technical field of molten iron pretreatment, in particular to a plug-in type molten iron slag removal air blowing spray gun in the process of removing molten iron blast furnace slag and liquid surface scum after pretreatment of molten iron. Background technique [0002] Hot metal pretreatment and hot metal slag removal technology is one of the key technologies of the clean steel production platform, and it is also an essential process in the production process of the modern steel industry. At present, iron and steel enterprises at home and abroad generally use slag removal machines to remove molten iron blast furnace slag and liquid surface dross after pretreatment of molten iron. The molten iron tank is inclined at a certain angle in the direction of the slag removal port, so that the scum on the liquid surface is basically flush with the lowest surface of the slag removal port, but the liquid level of the molten iron is h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C7/072C21C7/00
Inventor 欧阳德刚李明晖罗传清李具中
Owner 武汉钢铁有限公司
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