CN201292374Y

CN201292374Y - Slag bridge for tapping of revolving furnace

Info

Publication number: CN201292374Y
Application number: CNU2008201589780U
Authority: CN
Inventors: 周拥军
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-10-31
Filing date: 2008-10-31
Publication date: 2009-08-19
Anticipated expiration: 2018-10-31

Abstract

The utility model relates to a slag bridge for converter tapping, comprising a metal housing, wherein a cooling medium conveying pipe is arranged in an inner chamber of the slag bridge. The repeated utilization factor of the slag bridge of the utility model can be greatly improved, and the better energy saving effect and economic benefit can be achieved.

Description

A kind of converter tapping slag stopper

Technical field

The utility model relates to a kind of slag stopper, especially relates to the slag stopper that a kind of converter tapping is used.

Background technology

When converter smelting terminated, all slag all floated on the molten steel surface, has arrived the tapping later stage, molten steel at the tap hole place can form stronger eddy current, part converter slag can flow into ladle with molten steel, when molten steel after rolling, can not flow into ladle if the slag of remainder is not blocked yet; Because contain the deleterious composition of molten steel in the slag, these objectionable constituent can be fused in the molten steel again, influence the quality of molten steel, simultaneously a large amount of slags also will consume alloy with different forms; Therefore, slag must be blocked in the tap hole place does not allow the inflow ladle molten steel.At present domestic and international iron and steel enterprise all adopts converter tapping pushing off the slag technology to control down the quantity of slag.

Existing generally use throw in stove from the converter outside pushing off the slag implements to block tap hole top the slag-blocking ball method or the floating plug method of pushing off the slag, its slag-blocking ball or floating plug are made by refractory materials, slag-blocking ball or floating plug density will be controlled suitably, it can be floated between molten steel and the slag, one of every use one less important consumption.

The utility model content

The purpose of this utility model is to provide a kind of heat resistanceheat resistant performance of shaking good, the converter tapping slag stopper that can reuse.

The purpose of this utility model is achieved by the following technical programs: it comprises metal shell, and the heat-eliminating medium transfer lime is installed in the inner chamber.

Described slag stopper is taken away immediately from the medium that can be cooled after high-temperature molten steel or slag obtain heat, the metal shell temperature can not rise to its softening temperature, in addition, its appearance can also be solidified one deck slag shell as the excessive layer of high low temperature, thereby in the pushing off the slag process, can keep its shape and intensity constant substantially, thereby prolong its work-ing life, realize the repeatedly purpose of recycling.

The outside surface of described slag stopper metal shell preferably covers one deck high temperature resistant heat insulation material, to improve its resistance to elevated temperatures.

The outside surface of described slag stopper metal shell is preferably made coarse surface, can more effectively adhering to covering lagging material thereon, or strengthens it to adherence of slag and heat radiation.

Because cavity temperature is lower in the described slag stopper, thereby can also in described inner chamber, be equipped with and be used to survey the detector of slag stopper, so that can be in molten steel all the time and the slag interface location provides relevant information for the control slag stopper with respect to the position of molten steel.

Described slag stopper metal shell outside surface can be established cannelure, and in groove filling with insulation material, increase the area of dissipation of lagging material.

The bottom of described slag stopper metal shell is preferably made semisphere, rounding taper type, is used to fill in tap hole; Can also make up-small and down-big lower surface is the planar shape, is used to cover tap hole.

Be used to fill in the lower part of frame side of the slag stopper of tap hole, preferably be provided with vertical concave channels, when better, molten steel has not flowed situation about just being blocked fully by slag stopper and has taken place with the circularity that prevents tap hole; Lower housing portion end face with the slag stopper that covers tap hole is provided with concave channels, and when preventing that converter lining position, tap hole place is more smooth, molten steel has not flowed situation about just being blocked fully by slag stopper and taken place.

Be used to fill in the lower part of frame of the slag stopper of tap hole, can also be frustum of falling the rhizoma sparganic or the shape of falling the tetragonous cone table, be beneficial to machine-shaping, and, plug is when going out firm mouthful, even vertical concave channels is not established in the lower housing portion side, the molten steel in the converter also can flow.

The heat-eliminating medium transfer lime that the slag stopper inner chamber is installed, can be divided into and cool off air shooter and low pressure cooling medium transport pipe at a high speed, the outlet of low pressure cooling medium transport pipe, be located at from cooling off the effusive high velocity air of letter shoot at a high speed in the low pressure area that produces around it, so that heat-eliminating medium flows out and with the air-flow flow at high speed, can prevent from like this to damage because of the transport pipe of low pressure heat-eliminating medium, heat-eliminating medium enters in the stove.

Also should be connected to high speed gas on the described high speed cooling air shooter and carry the relay pipe, make heat-eliminating medium can flow to farther place.

The metallic substance of making the slag stopper housing can be ordinary steel, stainless steel, high temperature steel, cast iron or copper etc., and wherein ordinary steel material source is wide, and cost is low; The stainless steel thermal conductivity is than ordinary steel difference, and to solidify sinter thickness thin in the outside during use, helps the work of position sensor in the slag stopper; The preservative property of stainless steel itself improve the part working reliability of its inner contact heat-eliminating medium; High temperature steel housing slag stopper can reduce the heat-eliminating medium consumption, even available noncurrent heat-eliminating medium, as heating up water with kettle; Copper housing slag stopper because the excellent heat conductivity of copper plays better thermolysis with regard to the slag of producing lagging material or solidify in use before use for housing outer surface, makes them better to the provide protection of housing; Can make housing with cast steel or cast iron when producing slag stopper in enormous quantities.

Use the utility model, the repeating utilization factor of slag stopper can improve greatly, can produce better energy-conservation and economic benefit.

Description of drawings

Fig. 1 is the structural representation of the utility model one embodiment.

Fig. 2 is the structural representation of second embodiment of the utility model.

Fig. 3 is the structure enlarged diagram of I part embodiment illustrated in fig. 2.

Fig. 4 is the structural representation of the 3rd embodiment of the utility model.

The specific embodiments formula

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

Embodiment 1

With reference to Fig. 1, present embodiment comprises metal shell 1, and heat-eliminating medium transfer lime 4 is installed in the inner chamber; The bottom of metal shell 1 is the rounding taper type.

Embodiment 2

With reference to Fig. 2, present embodiment comprises metal shell 1, be equipped with in the inner chamber and cool off gas transmission pipeline 3 and low pressure cooling medium transport pipe 4 at a high speed, the outlet of low pressure cooling medium transport pipeline 4 is located at from cooling off letter shoot road 3 effusive high velocity airs at a high speed in the low pressure area that produces around it; Cool off letter shoot road 3 at a high speed and be provided with high-speed gas conveying relay pipe 7; The lower side of slag stopper housing 1 is provided with vertical concave channels 5; Also be provided with in the inner chamber and be used to survey the position sensor 2 of slag stopper with respect to the position of molten steel; Metal shell 1 outside surface also is provided with cannelure 8, and in groove 8 filling with insulation material 9 (referring to Fig. 3).

Embodiment 3

With reference to Fig. 4, present embodiment comprises metal shell 1, and heat-eliminating medium transfer lime 4 is installed in the inner chamber, and the bottom of housing 1 is that up-small and down-big lower surface is the planar shape, to be used for keeping off on the end face of tap hole; The lower surface of housing 1 is provided with groove 6.

Claims

1, a kind of converter tapping slag stopper is characterized in that, comprises metal shell, and the heat-eliminating medium transfer lime is installed in the inner chamber.

2, converter tapping slag stopper as claimed in claim 1 is characterized in that, the outside surface of described metal shell is coated with one deck high temperature resistant heat insulation material.

3, converter tapping slag stopper as claimed in claim 1 or 2 is characterized in that, the outside surface of described metal shell is coarse surface.

4, converter tapping slag stopper as claimed in claim 1 or 2 is characterized in that, is equipped with in the described inner chamber to be used to survey the detector of slag stopper with respect to the position of molten steel.

5, converter tapping slag stopper as claimed in claim 1 or 2 is characterized in that, described metal shell outside surface is provided with cannelure, is filled with lagging material in the cannelure.

6, converter tapping slag stopper as claimed in claim 1 or 2 is characterized in that, the bottom of described metal shell is that semisphere, rounding taper type or up-small and down-big lower surface are the planar shapes.

7, converter tapping slag stopper as claimed in claim 1 or 2 is characterized in that, is used to fill in the lower part of frame side of the slag stopper of tap hole, is provided with vertical concave channels.

8, converter tapping slag stopper as claimed in claim 1 or 2 is characterized in that, the lower part of frame of slag stopper is taper type of falling the rhizoma sparganic or the shape of falling the tetragonous cone table.

9, converter tapping slag stopper as claimed in claim 1 or 2, it is characterized in that, described heat-eliminating medium transfer lime, be divided into and cool off air shooter and low pressure cooling medium transport pipe at a high speed, the outlet of low pressure cooling medium transport pipe is located at from the effusive high velocity air of high-speed gas transfer lime in the low pressure area that produces around it.

10, converter tapping slag stopper as claimed in claim 9 is characterized in that, is connected to high-speed gas on the described high speed cooling air shooter and carries the relay pipe.