Integrated furnace lining smelting device

Abstract

The utility model relates to the technical field of industrial silicon processing equipment, and provides an integrated furnace lining smelting device which comprises an asbestos layer, the asbestos layer is made of asbestos wire gauze, a first brick layer is arranged on the bottom side in the asbestos layer, the first brick layer is made of light-weight high-alumina bricks, a second brick layer is arranged on the top of the first brick layer, and the second brick layer is made of light-weight high-alumina bricks. The second brick layer is made of high-alumina bricks, a first paste layer is arranged in the center of the top of the second brick layer and made of cold ramming paste, fiber layers are arranged on the two sides of the interior of the asbestos layer and made of refractory fiber felts, and when in use, the first paste layer is made of cold ramming paste. The top of the first paste layer arranged on the second brick layer is made of a cold ramming paste material which has good bonding performance, seamless ramming is conducted on the submerged arc furnace through micro-expansion cold ramming paste matched with a cold ramming technology, a furnace body frame is rammed out of the interior of the furnace body, and the cold ramming paste is laid on the furnace bottom and the furnace wall of the furnace and integrally rammed and formed.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial silicon processing equipment, in particular to an integrated furnace lining smelting device. Background Art

[0002] The quality of the lining of a smelting submerged arc furnace is an important factor affecting the production efficiency and economic benefits of the metallurgical industry. The service life of the lining has a great impact on the working efficiency and cost control of the submerged arc furnace. Cold ramming paste is made by mixing electric forged anthracite, graphite, etc. as aggregates, modified asphalt as a binder, and resin, coal tar, etc. as additives after a certain ratio. It is usually used to fill the gaps between carbon bricks. At present, the problems of broken linings and floating bricks are mainly caused by the gradual infiltration of molten metal from the gaps between carbon bricks. Therefore, the quality of the cold ramming paste used to fill the gaps between carbon bricks is crucial.

[0003] At present, most of the electric arc furnaces are operated in a closed and continuous mode, which can easily cause molten iron to leak into the bottom of the furnace, damage the furnace wall, and cause damage to the furnace lining. The lining repair is difficult to overhaul and requires stopping the furnace and removing the charge to repair it. The furnace must also be reopened, which is not only difficult to operate, but also labor-intensive and time-consuming. The investment and loss of a furnace shutdown far exceeds the manufacturing cost of a set of furnace linings. Therefore, the selection of more rational furnace building materials and more advanced furnace building processes has always been the direction of many workers. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that molten iron easily leaks into the bottom of an electric furnace, destroys the furnace wall, and causes damage to the furnace lining.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an integrated furnace lining smelting device, including an asbestos layer, the asbestos layer material is an asbestos mesh, a first brick layer is provided on the inner bottom side of the asbestos layer, the material of the first brick layer is a lightweight high-aluminum brick, a second brick layer is provided on the top of the first brick layer, the material of the second brick layer is a high-aluminum brick, a first paste layer is provided at the top center of the second brick layer, the material of the first paste layer is cold-rammed paste, and fiber layers are provided on both sides of the inner side of the asbestos layer, and the material of the fiber layer is refractory fiber felt.

[0006] As a preferred embodiment, third brick layers are provided on both sides of the top of the first paste layer, and the material of the third brick layers is refractory bricks.

[0007] The technical effect of adopting the above further solution is: the third brick layer is arranged on the top of the first paste layer using refractory brick material, which further increases the thermal insulation effect and increases the structural stability of the device.

[0008] As a preferred embodiment, the third brick layer is arranged on the inner top side of the asbestos layer, a second paste layer is arranged at the top center of the first paste layer, and the material of the second paste layer is low-temperature seam paste.

[0009] The technical effect of adopting the above further solution is: the second paste layer is arranged on the top of the first paste layer, and a low-temperature seam paste material is used to fill the gap between the paste layer and other parts to strengthen the overall structure.

[0010] As a preferred embodiment, a fourth brick layer is provided on the top of the second paste layer, the material of the fourth brick layer is protective brick, and an adhesive layer is provided on the outer surface of the asbestos layer, the material of the adhesive layer is silicate cement.

[0011] The technical effect of adopting the above further solution is: the fourth brick layer is arranged on the top of the second paste layer, and the protective brick material is used, which has good corrosion resistance and can prevent the molten metal from corroding the furnace lining.

[0012] As a preferred implementation, a thermal insulation layer is provided on the outer surface of the bonding layer, and the material of the thermal insulation layer is rock wool.

[0013] The technical effect of adopting the above further solution is: if the thermal insulation layer is arranged on the outer surface of the bonding layer using rock wool, energy loss can be reduced and the thermal insulation effect can be improved.

[0014] As a preferred embodiment, a heat insulating layer is provided on the outer surface of the thermal insulation layer, and the material of the heat insulating layer is high-alumina brick.

[0015] The technical effect of adopting the above further solution is: if the heat insulation layer is arranged on the outer surface of the thermal insulation layer using high-alumina bricks, heat conduction and loss can be further reduced.

[0016] As a preferred embodiment, an anti-corrosion layer is provided on the outer surface of the thermal insulation layer, and the material of the anti-corrosion layer is an anti-corrosion coating.

[0017] The technical effect of adopting the above further scheme is: the anti-corrosion layer is arranged on the outer surface material of the heat insulation layer as an anti-corrosion coating, which can prevent the corrosion of the heat insulation layer by molten metal or other objects, and further increase the service life of the furnace lining.

[0018] As a preferred embodiment, an outer wall layer is provided on the outer surface of the anti-corrosion layer, and the material of the outer wall layer is refractory mortar.

[0019] The technical effect of adopting the above further solution is: if the outer surface material of the outer wall layer arranged on the anti-corrosion layer is refractory mortar, the overall structural stability of the device can be enhanced, additional corrosion protection can be provided, and the appearance can beautify.

[0020] Compared with the prior art, the advantages and positive effects of the utility model are:

[0021] 1. In the utility model, when in use, the first paste layer is arranged on the top of the second brick layer. The material is a cold-rammed paste material with good bonding properties. The electric arc furnace is seamlessly rammed by means of micro-expansion cold-rammed paste in combination with a cold-ramming process. A furnace body frame is formed inside the furnace body. The furnace bottom and furnace walls are paved with cold-rammed paste and rammed into shape as a whole. The cold-rammed paste furnace-building technology makes full use of the process structure of cold-rammed seamless integral forming, and utilizes the characteristics of cold-rammed paste that is easy to ram and shape at low temperatures and has the same physical and chemical properties as carbon bricks after roasting. The utility model adopts its strong plasticity as an amorphous carbon material. The fourth brick layer is arranged on the top of the second paste layer. The protective brick material is adopted. It has good corrosion resistance and can prevent the corrosion of the furnace lining by the molten metal. The problem in the prior art that it is easy to cause molten iron to leak into the bottom of the electric furnace, damage the furnace wall, and cause damage to the furnace lining is solved.

[0022] 2. When the utility model is in use, the anti-corrosion layer is arranged on the outer surface material of the heat-insulating layer using anti-corrosion coating, which can prevent the corrosion of the heat-insulating layer by molten metal or other objects, further increasing the service life of the furnace lining; the outer wall layer is arranged on the outer surface material of the anti-corrosion layer using refractory mortar, which can enhance the overall structural stability of the device, provide additional corrosion protection, and beautify the appearance. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic cross-sectional view of the integrated furnace lining smelting device provided by the utility model Figure 1 ;

[0024] Figure 2 A schematic cross-sectional view of the integrated furnace lining smelting device provided by the utility model Figure 2 ;

[0025] Figure 3 A schematic cross-sectional view of the integrated furnace lining smelting device provided by the utility model Figure 3 .

[0026] Legend:

[0027] 1. Asbestos layer; 101. First brick layer; 102. Second brick layer; 103. First paste layer; 104. Fiber layer; 105. Third brick layer; 106. Second paste layer; 107. Fourth brick layer; 2. Adhesive layer; 201. Thermal insulation layer; 202. Heat insulating layer; 203. Anti-corrosion layer; 204. Outer wall layer. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0029] Example 1, please refer to Figure 1-3 The utility model provides a technical solution: an integrated furnace lining smelting device, including an asbestos layer 1, the asbestos layer 1 is made of asbestos mesh, a first brick layer 101 is arranged on the bottom side of the asbestos layer 1, the material of the first brick layer 101 is a lightweight high-aluminum brick, a second brick layer 102 is arranged on the top of the first brick layer 101, the material of the second brick layer 102 is a high-aluminum brick, a first paste layer 103 is arranged at the top center of the second brick layer 102, the material of the first paste layer 103 is a cold-rammed paste, and the inner two sides of the asbestos layer 1 are provided with a first brick layer 101, and the material of the first brick layer 101 is a light high-aluminum brick. A fiber layer 104 is provided on both sides, and the material of the fiber layer 104 is refractory fiber felt. A third brick layer 105 is provided on both sides of the top of the first paste layer 103. The material of the third brick layer 105 is refractory brick. The third brick layer 105 is arranged on the inner top side of the asbestos layer 1, and a second paste layer 106 is provided at the top center of the first paste layer 103. The material of the second paste layer 106 is low-temperature seam paste. A fourth brick layer 107 is provided on the top of the second paste layer 106, and the material of the fourth brick layer 107 is protective brick.

[0030] In this embodiment, the asbestos layer 1 is provided with a first brick layer 101, a second brick layer 102, a first paste layer 103, a fiber layer 104, a third brick layer 105, and a second paste layer 106 to form an inner furnace, and the asbestos layer 1 is provided at the bottom layer and is made of asbestos mesh material to support and fix the device structure, the first brick layer 101 is provided on the inner bottom side of the asbestos layer 1 and is made of lightweight high-aluminum bricks, which have good fire resistance and can withstand the smelting process under high temperature environment, the second brick layer 102 is provided on the top of the first brick layer 101 and is made of high-aluminum bricks, which also have good fire resistance and provide better thermal insulation effect to further fix the device structure, the first paste layer 103 is provided on the top of the second brick layer 102 and is made of cold-rammed paste material with good bonding performance, the ore-fired furnace is seamlessly rammed by micro-expansion cold-ramming paste in combination with the cold-ramming process, a furnace body frame is driven out inside the furnace body, the furnace bottom and furnace wall are paved with cold-ramming paste and rammed into shape as a whole, and cold-ramming is used to form the furnace. The ramming paste furnace building technology makes full use of the process structure of cold ramming seamless integral forming, and utilizes the characteristics of cold ramming paste that is easy to ram and form at low temperature and has the same physical and chemical properties as carbon bricks after roasting. It uses its strong plasticity as an amorphous carbon material to completely replace carbon bricks as the integral material for making the smelting furnace body. The fiber layer 104 is arranged on the inner material of the asbestos layer 1 and is made of refractory fiber felt material, which can effectively perform thermal insulation and reduce energy loss. The third brick layer 105 is arranged on the top of the first paste layer 103 and is made of refractory brick material, which further increases the thermal insulation effect and increases the structural stability of the device. The second paste layer 106 is arranged on the top of the first paste layer 103 and is made of low-temperature seam paste material to fill the gap between the paste layer and other parts to strengthen the overall structure. The fourth brick layer 107 is arranged on the top of the second paste layer 106 and is made of protective brick material. It has good corrosion resistance and can prevent the corrosion of the furnace lining by the molten metal.

[0031] Embodiment 2, as Figure 1-3 As shown, the outer surface of the asbestos layer 1 is provided with a bonding layer 2, the material of the bonding layer 2 is silicate cement, the outer surface of the bonding layer 2 is provided with a thermal insulation layer 201, the material of the thermal insulation layer 201 is rock wool, the outer surface of the thermal insulation layer 201 is provided with a heat insulation layer 202, the material of the heat insulation layer 202 is high-alumina brick, the outer surface of the heat insulation layer 202 is provided with an anti-corrosion layer 203, the material of the anti-corrosion layer 203 is anti-corrosion coating, the outer surface of the anti-corrosion layer 203 is provided with an outer wall layer 204, the material of the outer wall layer 204 is refractory mortar.

[0032] In this embodiment, an outer furnace lining is formed by the bonding layer 2 and the insulation layer 201, the heat insulating layer 202, the anti-corrosion layer 203, and the outer wall layer 204. The bonding layer 2 is arranged on the outer surface material of the asbestos layer 1 and is made of silicate cement. The insulation layer 201 is firmly bonded to the outer surface of the asbestos layer 1, thereby further enhancing the stability of the overall structure. The insulation layer 201 is arranged on the outer surface material of the bonding layer 2 and is made of rock wool, thereby reducing energy loss and improving the heat insulation effect. The heat insulating layer 202 is arranged on the outer surface material of the insulation layer 201 and is made of high-alumina bricks, thereby further reducing heat conduction and loss. The anti-corrosion layer 203 is arranged on the outer surface material of the heat insulating layer 202 and is made of anti-corrosion coating, thereby preventing the corrosion of the heat insulating layer 202 by molten metal or other objects, thereby further increasing the service life of the furnace lining. The outer wall layer 204 is arranged on the outer surface material of the anti-corrosion layer 203 and is made of refractory mortar, thereby enhancing the overall structural stability of the device, providing additional corrosion protection, and beautifying the appearance.

[0033] Working principle: When in use, the first brick layer 101, the second brick layer 102, the first paste layer 103, the fiber layer 104, the third brick layer 105, and the second paste layer 106 are arranged inside the asbestos layer 1 to form an inner furnace, and the asbestos layer 1 is arranged at the bottom layer, which is an asbestos mesh material, used to support and fix the device structure. The first brick layer 101 is arranged on the inner bottom side of the asbestos layer 1. The material is a lightweight high-aluminum brick, which has good fire resistance and can withstand the smelting process under high temperature environment. The second brick layer 102 is arranged on the top of the first brick layer 101. The material is a high-aluminum brick material, which also has good fire resistance and provides better thermal insulation effect to further fix the device structure. The first paste layer 103 is arranged on the second brick layer 102. The top material is cold-rammed paste material with good bonding properties. The electric arc furnace is seamlessly rammed through micro-expansion cold-rammed paste and cold-ramming process. The furnace frame is beaten out inside the furnace body, and the furnace bottom and furnace wall are paved with cold-rammed paste and rammed into shape as a whole. The cold-rammed paste furnace building technology makes full use of the process structure of cold-rammed seamless integral forming, and utilizes the characteristics of cold-rammed paste that is easy to ram and form at low temperature and has the same physical and chemical properties as carbon bricks after roasting. It is used as an amorphous carbon material with strong plasticity, and completely replaces carbon bricks as the overall material for making the smelting furnace body. The fiber layer 104 is arranged on the inner material of the asbestos layer 1, which is refractory fiber felt material, which can perform good thermal insulation and reduce energy loss. The third brick layer 105 is arranged on The top material of the first paste layer 103 is made of refractory brick material, which further increases the thermal insulation effect and increases the structural stability of the device. The second paste layer 106 is arranged on the top of the first paste layer 103 and adopts low-temperature seam paste material to fill the gap between the paste layer and other parts and strengthen the overall structure. The fourth brick layer 107 is arranged on the top of the second paste layer 106 and adopts protective brick material. It has good corrosion resistance and can prevent the corrosion of the furnace lining by the molten metal. When in use, the outer furnace lining is composed of the bonding layer 2 and the thermal insulation layer 201, the heat insulation layer 202, the anti-corrosion layer 203, and the outer wall layer 204. The bonding layer 2 is arranged on the outer surface of the asbestos layer 1. The material is silicate cement, which firmly bonds the thermal insulation layer 201 On the outer surface of the asbestos layer 1, the stability of the overall structure is further enhanced. The insulation layer 201 is arranged on the outer surface of the bonding layer 2 and the material is rock wool, which can reduce energy loss and improve the thermal insulation effect. The insulation layer 202 is arranged on the outer surface of the insulation layer 201 and the material is high-alumina brick, which can further reduce heat conduction and loss. The anti-corrosion layer 203 is arranged on the outer surface of the insulation layer 202 and the material is anti-corrosion coating, which can prevent the corrosion of the insulation layer 202 by molten metal or other objects, and further increase the service life of the furnace lining. The outer wall layer 204 is arranged on the outer surface of the anti-corrosion layer 203 and the material is refractory mortar, which can enhance the overall structural stability of the device, provide additional corrosion protection, and beautify the appearance.

[0034] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. An integrated furnace lining smelting device, comprising an asbestos layer (1), characterized in that: The asbestos layer (1) is made of asbestos mesh; a first brick layer (101) is provided on the bottom side of the asbestos layer (1); the first brick layer (101) is made of lightweight high-aluminum bricks; a second brick layer (102) is provided on the top of the first brick layer (101); the second brick layer (102) is made of high-aluminum bricks; a first paste layer (103) is provided at the top center of the second brick layer (102); the first paste layer (103) is made of cold-rammed paste; fiber layers (104) are provided on both sides of the asbestos layer (1); the fiber layers (104) are made of refractory fiber felt.

2. The integrated furnace lining smelting device according to claim 1, characterized in that: A third brick layer (105) is provided on both sides of the top of the first paste layer (103), and the material of the third brick layer (105) is refractory bricks.

3. The integrated furnace lining smelting device according to claim 2 is characterized in that: The third brick layer (105) is arranged on the inner top side of the asbestos layer (1), and a second paste layer (106) is arranged at the top center of the first paste layer (103), and the material of the second paste layer (106) is low-temperature joint paste.

4. The integrated furnace lining smelting device according to claim 3 is characterized in that: A fourth brick layer (107) is provided on the top of the second paste layer (106), and the material of the fourth brick layer (107) is a protective brick. An adhesive layer (2) is provided on the outer surface of the asbestos layer (1), and the material of the adhesive layer (2) is silicate cement.

5. The integrated furnace lining smelting device according to claim 4 is characterized in that: The outer surface of the bonding layer (2) is provided with a thermal insulation layer (201), and the material of the thermal insulation layer (201) is rock wool.

6. The integrated furnace lining smelting device according to claim 5, characterized in that: The outer surface of the thermal insulation layer (201) is provided with a heat insulation layer (202), and the material of the heat insulation layer (202) is high-alumina brick.

7. The integrated furnace lining smelting device according to claim 6, characterized in that: An anti-corrosion layer (203) is provided on the outer surface of the heat insulation layer (202), and the material of the anti-corrosion layer (203) is an anti-corrosion coating.

8. The integrated furnace lining smelting device according to claim 7, characterized in that: An outer wall layer (204) is provided on the outer surface of the anti-corrosion layer (203), and the material of the outer wall layer (204) is refractory mortar.

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