CN202239612U

CN202239612U - Brick cup at molten steel outlet

Info

Publication number: CN202239612U
Application number: CN2011203380358U
Authority: CN
Inventors: 王永辉; 彭锦庚; 王允; 陈勇; 姚焕民; 王鹏; 郭栋; 娄军峰; 孟红涛; 宋世峰; 王文学
Original assignee: Puyang Pu Hi Temperature Material (group) Ltd By Share Ltd Beijing Science And Technology Research And Development Center; Puyang Refractories Group Co Ltd
Current assignee: Puyang Pu Hi Temperature Material (group) Ltd By Share Ltd Beijing Science And Technology Research And Development Center; Puyang Refractories Group Co Ltd
Priority date: 2011-09-08
Filing date: 2011-09-08
Publication date: 2012-05-30
Anticipated expiration: 2021-09-08

Abstract

The utility model provides a brick cup at a molten steel outlet, which includes a refractory material body, a ventilated wall, a gas blowing pipe and a gas chamber box, wherein a ventilation channel is arranged inside the ventilated wall; both the ventilated wall and the gas chamber box are arranged in the refractory material body; the ventilated wall and the gas blowing pipe are communicated with the gas chamber box respectively; preferably, the gas chamber box is provided with an annular groove inner chamber, and the ventilated wall is an annular body. In the utility model, gas can pass through the gas chamber box and the ventilated wall sequentially and be blown upwards through the gas blow pipe of the brick cup at the molten steel outlet, so as to prevent non-metallic inclusion from being brought into steel and further improve the quality of the steel.

Description

A kind of tapping pocket block

Technical field

The utility model relates to a kind of tapping pocket block, the tapping pocket block that particularly a kind of inflatable stirs.

Background technology

Development and national economy is to the continuous increase of the demand of rolling shapes, quality.The cleanliness factor that improves molten steel is to produce special kinds steel and the basis of improving steel product quality.The employing of furnace outer refining technology and high-quality refractory material can be reduced to low-down level with impurity factor in the molten steel and field trash.But in actual production, through the purifying of steel after the refining treatment, particularly get into the steel billet that conticaster is pulled out through tundish and crystallizer, inclusion content wherein still has rising in various degree, and the cleannes of final molten steel do not reach desirable target.During steel-making continuous casting is produced, because field trash is more in the molten steel, the situation that middle water containing opening blocks influences ordinary production often takes place.

Therefore, before molten steel is transferred to next link by a container, before particularly molten steel goes to ladle by electric furnace, in going to by ladle before the bag, get into crystallizer by middle bag before, it is very necessary accomplishing the cleaning molten steel.

The utility model content

In view of this, the utility model provides a kind of tapping pocket block of being convenient to clean molten steel.

The tapping pocket block that the utility model provides comprises refractory aggregate, ventilative wall, gas blow pipe and air chamber box; The said ventilative gas-permeable channels that has within the walls; Said ventilative wall and said air chamber box all are arranged in the said refractory aggregate, and said ventilative wall and said gas blow pipe are communicated with said air chamber box respectively.

Preferably, said air chamber box has the cannelure inner chamber, and said ventilative wall is a ring body shape.

In use; Through adjustment argon pressure and flow; Make air communication cross gas blow pipe, air chamber box and ventilative wall and blow out air curtain, particularly said ventilative wall blows out annular air curtain when being the ventilative ring of ring body shape, changes the flow direction of the molten steel that is about to get into crystallizer; Make it to move upward once more, the non-metallic inclusion come-up in the molten steel is absorbed by the molten steel surface slag blanket on the one hand.On the other hand, prolong the time of staying of molten steel, make the temperature of molten steel and composition even as much as possible.

Description of drawings

Fig. 1-1 is the schematic top plan view of tapping pocket block of a kind of circle of the utility model;

Fig. 1-2 is the vertical section structure sketch map of the tapping pocket block of the circle shown in Fig. 1-1;

Fig. 2-1 is the schematic top plan view of the another kind of circular tapping pocket block of the utility model;

Fig. 2-2 is the vertical section structure sketch map of the tapping pocket block of the circle shown in Fig. 2-1;

Fig. 3-1 is the schematic top plan view of another circular tapping pocket block of the utility model;

Fig. 3-2 is the vertical section structure sketch map of the tapping pocket block of the circle shown in Fig. 3-1;

Fig. 4-1 is the schematic top plan view of another circular tapping pocket block of the utility model;

Fig. 4-2 is the vertical section structure sketch map of the tapping pocket block of the circle shown in Fig. 4-1;

Fig. 5-1 is the schematic top plan view of a kind of square tapping pocket block of the utility model;

Fig. 5-2 is the vertical section structure sketch map of the square tapping pocket block shown in Fig. 5-1;

Fig. 6-1 is the schematic top plan view of the another kind of square tapping pocket block of the utility model;

Fig. 6-2 is the vertical section structure sketch map of the square tapping pocket block shown in Fig. 6-1;

Fig. 7-1 is the schematic top plan view of another square tapping pocket block of the utility model;

Fig. 7-2 is the vertical section structure sketch map of the square tapping pocket block shown in Fig. 7-1;

Fig. 8-1 is the schematic top plan view of another square tapping pocket block of the utility model;

Fig. 8-2 is the vertical section structure sketch map of the square tapping pocket block shown in Fig. 8-1;

Fig. 9-1 is the schematic top plan view of the air chamber box with cannelure inner chamber of a kind of pocket block of tapping of the utility model;

Fig. 9-2 is the vertical section structure sketch map of the air chamber box shown in Fig. 9-1;

Figure 10-1 is the schematic top plan view of the ventilative wall of a kind of pocket block of tapping of the utility model;

Figure 10-2 is the vertical section structure sketch map of the ventilative wall shown in Figure 10-1.

Among the figure: 1-refractory aggregate, the 2-wall of breathing freely, 3-air chamber box, 4-gas blow pipe.

The specific embodiment

The specific embodiment of a kind of pocket block of tapping of the utility model can for: comprise refractory aggregate, ventilative wall, gas blow pipe and air chamber box as previously mentioned; Said ventilative wall is preferably the ventilative ring of ring body shape, and the center of this ventilative ring preferably overlaps with brick cup ladle canal center.The bottom of refractory aggregate or side are provided with air inlet pipe and draw external argon gas source.Refractory aggregate can be with top grade magnesia or magnalium matter pours moulding by casting or adopt the magnesium carbonaceous material to carry out mechanical pressing.Refractory aggregate internal preset air chamber box, the body passage is passed through in ventilative wall setting, and the bottom of refractory aggregate or sidepiece are drawn a gassing pipe, are connected with external source of the gas.The inner plenum structure of air chamber box can adopt various ways; Both can adopt can structure straight forming; Also can adopt low melting point to be compounded in advance in the refractory aggregate, treat that formed product finishes the back through oven dry or burn till and wait measure to make low melting point melt outflow to be achieved.The profile of said tapping pocket block can be circle or square.In use; Through adjustment argon pressure and flow; Make the ventilative wall of disperse (ventilative ring) of middle water containing opening brick cup blow out air curtain; Change the flow direction of the molten steel be about to get into crystallizer, make it to move upward once more, the non-metallic inclusion come-up in the molten steel is absorbed by the molten steel surface slag blanket on the one hand.On the other hand, prolong the time of staying of molten steel in tundish, make the temperature of molten steel and composition even as much as possible.

Below through embodiment and combine accompanying drawing that the utility model is further specified.

Fig. 1-1 and 1-2, shown in Fig. 2-1 and the 2-2 is two kinds of circular tapping pocket blocks, gas blow pipe 4 is arranged on the side of refractory aggregate 1; External source of the gas is through gas blow pipe 4 air feed such as argon gas during use; Get into air chamber box 3 then with cannelure inner chamber; And then gas blows to molten steel through ventilative wall 2 (being preferably the ventilative ring of ring body shape), promotes the nonmetal inclusion come-up thereby stir molten steel, and evenly molten steel composition and temperature simultaneously.Fig. 3-1 and 3-2, Fig. 4-1 and 4-2 are other two kinds of circular tapping pocket blocks, gas blow pipe 4 is positioned at the bottom of refractory aggregate 1.Fig. 5-1 and 5-2, Fig. 6-1 and 6-2 are two kinds of square tapping pocket blocks, gas blow pipe 4 is positioned at the sidepiece of refractory aggregate 1, Fig. 7-1 and 7-2, Fig. 8-1 and 8-2 are other two kinds of square pocket blocks, gas blow pipe 1 is positioned at the bottom of refractory aggregate 1.Fig. 9-1 and 9-2 are depicted as the structure of the air chamber box 3 with cannelure inner chamber, and ventilative wall 2 one ends place on the air chamber box 3, and the other end stirs to the molten steel air blowing on the pocket block surface.Figure 10-1 and 10-2 are depicted as the structure of ventilative wall 2, the ventilative ring that this ventilative wall 2 is a ring body shape.

This tapping pocket block can be used for tap holes of electric furnace, ladle tapping system etc. and locate.

Obviously, the foregoing description only be for explanation clearly done for example, and be not qualification to embodiment.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.

Claims

One kind the tapping pocket block; It is characterized in that; Comprise refractory aggregate, ventilative wall, gas blow pipe and air chamber box; Said breathing freely has gas-permeable channels within the walls, and said ventilative wall and said air chamber box all are arranged in the said refractory aggregate, and said ventilative wall and said gas blow pipe are communicated with said air chamber box respectively.
2. tapping pocket block as claimed in claim 1 is characterized in that, said air chamber box has the cannelure inner chamber, and said ventilative wall is a ring body shape.