CN216729532U - Silicon metal tapping and refining silicon ladle integral lining structure - Google Patents

Abstract

The utility model provides an integral lining structure of a silicon ladle for discharging and refining metal silicon, which comprises a ladle shell, wherein a heat-insulating layer, a ladle wall layer and a protective spraying layer are sequentially arranged on the inner wall of the ladle shell from outside to inside; the bottom in the cladding is provided with an upper working layer and a lower permanent layer; the connection part of the ladle bottom working layer and the permanent layer is provided with an impermeable layer which is sunken towards the ladle wall; the impermeable layer and the lower cladding wall layer of the cladding are integrated; the top of the impervious layer is provided with a protective spraying layer which is connected with the protective spraying layer in the cladding into a whole; the central part of the bottom permanent layer of the lower ladle is provided with a bottom blowing, the bottom blowing penetrates through the bottom permanent layer and the working layer, the bottom end of the bottom blowing is connected with a vent pipe, and the upper part of the bottom blowing is connected with an air outlet pipe. The silicon ladle lining is an integral ladle lining, the impervious barrier at the bottom of the lining enables the seam between the ladle bottom and the ladle wall not to be vertical, so that the ladle bottom and the ladle wall are firmly connected, meanwhile, the silicon ladle lining has good leakage-proof effect, and the service life of the integral silicon ladle lining is long.

Description

Metal silicon discharging and refining silicon ladle integral lining structure

Technical Field

The utility model belongs to the technical field of new materials, relates to a metal silicon ladle lining, and particularly relates to an integral lining structure of a silicon ladle for discharging and refining metal silicon.

Background

Traditional silicon metal goes out of a furnace and silicon package inside lining of concise use, use refractory castable and resistant firebrick or carbon brick mixture to build by laying bricks or stones, under the normal conditions, with the working layer of silicon liquid contact for resistant firebrick, there are a large amount of gaps, and take off the sediment in-process resistant firebrick easily not hard up, drop, the silicon package inside lining of this kind of structure consumes soon, and the life-span is short, and the security is poor, takes place easily at the in-process of going out of a furnace and wears the package accident, causes the excessive scald operating personnel of silicon liquid or scaling equipment.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems in the prior art, the utility model provides an integral lining structure of a silicon ladle for discharging and refining metal silicon.

The technical scheme adopted by the utility model is as follows: a silicon metal tapping and refining silicon ladle integral lining structure comprises a ladle shell, wherein a heat insulation layer, a ladle wall layer and a protective spraying layer are sequentially arranged on the inner wall of the ladle shell from outside to inside; the bottom in the cladding is provided with a lower cladding bottom permanent layer; an impermeable layer is arranged above the permanent layer of the lower ladle bottom; the lower part of the impermeable layer is wide and the upper part of the impermeable layer is narrow, and the periphery of the impermeable layer and the wall covering layer at the inner lower part of the cladding are integrated; the top of the impervious layer is provided with a protective spraying layer which is connected with the protective spraying layer in the cladding into a whole; the middle part of the bottom permanent layer of the lower ladle is provided with a bottom blowing pipe, the bottom blowing pipe penetrates through the lower part of the center of the impermeable layer, the bottom end of the bottom blowing pipe is connected with a vent pipe, the upper part of the bottom blowing pipe is connected with an air outlet pipe, and the air outlet pipe penetrates through the impermeable layer and extends into the silicon ladle.

Furthermore, the wall cladding layer at the upper part of the cladding is provided with brake nails and steel wire fibers.

Furthermore, the upper part outside the cladding is provided with symmetrical lugs.

Further, a silicon bag support is arranged at the bottom of the bag shell.

Furthermore, small holes are distributed on the cladding.

Compared with the prior art, the utility model has the beneficial effects that: the silicon ladle lining is an integral ladle lining, and the impermeable layer is designed in the integral silicon ladle lining, so that the seam between the ladle bottom and the ladle wall is not vertical, the ladle bottom and the ladle wall are firmly connected, and a good leakage-proof effect is achieved; the surface of the anti-seepage layer is provided with the protective spraying layer which is connected with the protective spraying layer in the cladding into a whole, so that no seam exists in the cladding, and the risk of penetrating the cladding is reduced. The integral lining of the utility model has low maintenance cost, and compared with the traditional mixed lining, the service life of the integral silicon ladle lining is prolonged by more than 4 times.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

In the figure: 1. cladding; 2. a heat-insulating layer; 3. a wrap-around layer; 4. a protective spray coating layer; 5. a bottom working layer is coated; 6. a bottom permanent layer of the ladle; 7. a flange; 8. an impermeable layer; 9. bottom blowing; 10. a breather pipe; 11. raking nails; 12. steel wire fibers; 14. ear wrapping; 15. a silicon ladle support; 16. and an air outlet pipe.

Detailed Description

The utility model will be further explained and explained with reference to the drawings;

as shown in figure 1, the integral lining structure of the silicon ladle for discharging and refining the metal silicon comprises a ladle shell 1, wherein symmetrical ladle lugs 14 are arranged at the upper part outside the ladle shell 1, and a silicon ladle support 15 is arranged at the bottom of the ladle shell. The cladding 1 is distributed with small holes. The inner wall of the cladding 1 is sequentially provided with a heat-insulating layer 2, a cladding layer 3 and a protective spraying layer 4 from outside to inside; the wall cladding layer 3 on the upper part of the cladding 1 is provided with brake nails 11 and steel wire fibers 12, and the bottom in the cladding 1 is provided with a lower cladding bottom permanent layer 6; an impermeable layer 8 is arranged above the lower ladle bottom permanent layer 6; the lower part of the impermeable layer 8 is wide and the upper part is narrow, and the periphery of the impermeable layer 8 and the cladding wall layer 3 at the inner lower part of the cladding 1 are integrated; the top of the impermeable layer 8 is provided with a protective spraying layer 4 which is connected with the protective spraying layer 4 in the cladding 1 into a whole; the middle part of the lower ladle bottom permanent layer 6 is provided with a bottom blowing pipe 9, the bottom end of the bottom blowing pipe 9 is fixed through a flange 7, the bottom blowing pipe 9 penetrates through the lower part of the center of the impermeable layer 8, the bottom end of the bottom blowing pipe 9 is connected with a vent pipe 10, the upper part of the bottom blowing pipe 9 is connected with an air outlet pipe 16, and the air outlet pipe 16 penetrates through the impermeable layer and extends into the silicon ladle.

Before the whole packing is built, small holes of 3-5mm are arranged on the cladding at intervals of 200-300mm for fully drying the packing; the cladding is a steel shell; the ladle wall layer is the main part of the silicon ladle lining and is formed by pouring high-strength low-cement castable or ultralow-cement castable; the spray material adopted by the protective spray coating is generally refractory clay and/or mullite (the content of Al2O3 is 50-60%); at the position 200-300mm away from the edge of the bag, the opposite rake nails with the length of 80-120mm are welded, so that the mechanical strength of the bag wall of the bag opening is increased. Before the silicon lining is poured, a layer of heat-insulating material with the thickness of 5-10mm is stuck on the inner wall of the cladding to form a heat-insulating layer, and ceramic fibers, asbestos plates or heat-insulating fibers are adopted. The refractory castable is low-cement castable. At the position 200-300mm away from the ladle opening, 1-3% of 446 stainless steel fiber is mixed in the casting material.

The working principle of the utility model is as follows: the working layer that neutralizes silicon liquid contact in the silicon package inside lining is the protection spraying layer in the involucrum, and the barrier layer surface is equipped with protection spraying layer and involucrum in the involucrum even as an organic whole, makes the involucrum inside not have any seam, and is durable, thereby has avoided damaging the package wall layer at the slagging-off in-process, compares with the traditional silicon package inside lining that adopts resistant firebrick to form, has avoided becoming flexible, has come off, whole silicon package inside lining is longe-lived, and the security is strong, avoids taking place the emergence of wearing the package accident at the in-process of going out of the furnace.

Claims (5)

1. The utility model provides a metal silicon goes out stove and the whole lining structure of concise silicon package, includes the cladding, its characterized in that: the inner wall of the cladding (1) is sequentially provided with a heat-insulating layer (2), a cladding layer (3) and a protective spraying layer (4) from outside to inside; the bottom in the cladding (1) is provided with a lower cladding bottom permanent layer (6); an impermeable layer (8) is arranged above the lower ladle bottom permanent layer (6); the lower part of the impermeable layer (8) is wide and the upper part is narrow, and the periphery of the impermeable layer (8) and the cladding wall layer (3) at the inner lower part of the cladding are integrated; a protective spraying layer (4) is arranged on the top of the impermeable layer (8) and is connected with the protective spraying layer (4) in the cladding into a whole; the middle part of the lower ladle bottom permanent layer (6) is provided with a bottom blowing pipe (9), the bottom blowing pipe (9) penetrates through the lower part of the center of the impermeable layer (8), the bottom end of the bottom blowing pipe (9) is connected with a vent pipe (10), the upper part of the bottom blowing pipe is connected with an air outlet pipe (16), and the air outlet pipe (16) penetrates through the impermeable layer and extends into the silicon ladle.

2. The structure of claim 1, wherein the inner lining of the silicon ladle comprises: the wall cladding layer (3) at the upper part of the cladding shell (1) is provided with harrow nails (11) and steel wire fibers (12).

3. The structure of the integral lining of the tapping and refining silicon ladle for metallic silicon as claimed in claim 1 or 2, wherein: the upper part outside the cladding (1) is provided with symmetrical lugs (14).

4. The structure of claim 3, wherein the inner lining of the silicon ladle comprises: the bottom of the cladding (1) is provided with a silicon cladding support (15).

5. The structure of claim 1, 2 or 4, wherein the inner lining of the ladle comprises: the small holes are distributed on the cladding (1).

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