CN215261152U - Electric melting furnace for smelting aluminum electrolysis overhaul slag - Google Patents
Electric melting furnace for smelting aluminum electrolysis overhaul slag Download PDFInfo
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- CN215261152U CN215261152U CN202121629338.5U CN202121629338U CN215261152U CN 215261152 U CN215261152 U CN 215261152U CN 202121629338 U CN202121629338 U CN 202121629338U CN 215261152 U CN215261152 U CN 215261152U
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Abstract
The utility model discloses an electric melting furnace for melting aluminum electrolysis overhaul slag, which comprises a furnace body with an opening at the top, wherein a discharge hole is arranged on the side wall of the furnace body; the distance L between the discharge port and the bottom of the furnace body is 1-1.8 m; a furnace lining is arranged inside the furnace body; a water-cooled furnace cover is covered at the top of the furnace body; a feed inlet is formed in the center of the water-cooled furnace cover, 3 electrodes uniformly penetrate and are fixed on the water-cooled furnace cover around the feed inlet, and one end of each electrode is located in the furnace body. The utility model has the advantages that: the utility model has simple structure, easy realization and time and labor saving operation; the continuous feeding and discharging work is realized, the working efficiency of the electric melting furnace is improved, the energy consumption is reduced, and the production cost of an enterprise is reduced; the working environment of the site is protected, and the physical health of workers is further ensured; the service life of the electric melting furnace is ensured, and the maintenance cost is reduced.
Description
The technical field is as follows:
the utility model relates to an electric smelting furnace, in particular to an electric smelting furnace for smelting aluminum electrolysis overhaul residues.
Background art:
the overhaul slag of the aluminum electrolysis cell is solid waste discharged periodically from the aluminum electrolysis cell, is a general name for all waste lining materials and carbon-containing electrode materials removed during overhaul of the aluminum electrolysis cell, contains toxic fluoride and a small amount of highly toxic cyanide, belongs to dangerous waste, and is I-type waste which is forbidden to be discarded randomly by the national regulations. At present, the harmless treatment of the overhaul slag of the aluminum electrolytic cell is mainly to mix the overhaul slag and quartz sand in proportion, heat and melt the mixture in an electric melting furnace, wherein cyanide is decomposed at high temperature, fluoride is dissolved in liquid melt and finally flows out and is cooled to form a glass body without crystal phase which can be used as building aggregate, and the resource and harmless treatment of the overhaul slag of the aluminum electrolytic cell is realized.
However, the electric melting furnaces used at present have the following problems: 1. the existing electric melting furnace is melted after a certain amount of raw materials are added, and after the raw materials are melted for a certain time, pouring operation needs to be carried out on the electric melting furnace, so that all liquid-state melting materials in the electric melting furnace are discharged from a discharge hole of the electric melting furnace, and then the electric melting furnace is restored to the original position and then is subjected to charging operation again, the operation is time-consuming and labor-consuming, the working efficiency of the electric melting furnace is reduced, meanwhile, the electric melting furnace cannot work continuously, the energy consumption is increased, and the production cost of enterprises is increased; 2. during the smelting process of the electric smelting furnace, the generated flue gas is easy to discharge from the furnace cover, so that the field working environment is poor, and the health of workers is influenced; 3. the furnace lining of the electric melting furnace is contacted with air at a high temperature and can be oxidized, so that the electric melting furnace is very easy to damage, the service life of the electric melting furnace is shortened, and the maintenance cost is increased.
The utility model has the following contents:
an object of the utility model is to provide a simple structure, operation labour saving and time saving, and improved electric smelting pot work efficiency's an electric smelting pot for smelting aluminium electroloysis overhaul sediment.
The utility model discloses by following technical scheme implement: the patent aims at providing an electric smelting furnace for smelting aluminum electrolysis overhaul slag, which comprises a furnace body with an opening at the top, wherein a discharge hole is formed in the side wall of the furnace body; the distance L between the discharge hole and the bottom of the furnace body is 1-1.8 m; a furnace lining is arranged inside the furnace body; a water-cooled furnace cover is covered at the top of the furnace body; the center of water-cooled furnace lid has seted up the feed inlet around the feed inlet water-cooled furnace lid evenly runs through and is fixed with 3 electrodes, the one end of electrode is located in the furnace body.
Furthermore, the water-cooled furnace cover comprises an outer furnace cover ring and an inner furnace cover, the inner furnace cover is fixed in the outer furnace cover ring, a dust removal hole is formed in the outer furnace cover ring, the feed inlet is formed in the center of the inner furnace cover, and the electrode penetrates and is fixed on the inner furnace cover; a first cooling water inlet pipe is communicated with the edge of the outer furnace cover ring, and a first cooling water return pipe is communicated with the inner side of the outer furnace cover ring; and a second cooling water inlet pipe is communicated with the inner side of the inner furnace cover, and a second cooling water return pipe is communicated with the edge of the inner furnace cover.
Further, a first spiral water-cooling channel communicated with the first cooling water inlet pipe and the first cooling water return pipe is arranged in the outer furnace cover ring; and a second spiral water-cooling channel communicated with the second cooling water inlet pipe and the second cooling water return pipe is arranged in the inner furnace cover.
Further, a water-cooling furnace ring with a hollow inner part is arranged between the water-cooling furnace cover and the furnace body; the water-cooling furnace circle lateral wall is close to one side intercommunication of furnace body is provided with the third cooling water inlet tube the water-cooling furnace circle lateral wall is close to one side intercommunication of water-cooling furnace lid is provided with the third cooling water wet return the inside of water-cooling furnace circle be provided with the third cooling water inlet tube with the third spiral water-cooling channel of third cooling water wet return intercommunication.
Furthermore, an operation hole and an observation hole are formed in the side wall of the water-cooling furnace ring; a plurality of slag hanging nails are fixed on the inner wall of the water-cooling furnace ring, and a refractory mud layer is coated on the inner wall of the water-cooling furnace ring; the slag adhering nail is embedded in the refractory mortar layer.
Further, the furnace lining is built by carbon bricks.
Further, a support is arranged on the side wall of the furnace body above the discharge port, one end of the support is fixed on the side wall of the furnace body, a connecting rod is arranged at the other end of the support, one end of the connecting rod is rotatably hinged on the support, the other end of the connecting rod is fixedly connected with a graphite plug through a fixing rod, and the graphite plug is movably inserted into the discharge port; the automatic telescopic rod is connected and arranged between the support and the connecting rod, one end of the automatic telescopic rod is rotatably hinged on the support, and the other end of the automatic telescopic rod is rotatably hinged on the connecting rod.
Further, the graphite plug is a conical frustum-shaped graphite plug; the large-diameter end of the graphite plug is fixed on the fixed rod, and the small-diameter end of the graphite plug is movably inserted in the discharge port.
The utility model has the advantages that: 1. the utility model has simple structure and easy realization, and the smelted liquid smelt can directly flow out from the discharge port by moving the discharge port downwards to be arranged at a position 1-1.8m away from the bottom of the furnace body, so that the electric smelting furnace does not need to be poured, and the operation is time-saving and labor-saving; meanwhile, after a certain amount of materials are added from the feeding hole, smelting is carried out through electrode addition, after the materials are smelted for a certain time, the discharge hole is opened, the smelted materials flow out from the discharge hole, after a certain amount of materials flow out, the discharge hole is closed, feeding is continued, smelting is continued, the continuous feeding and discharging work is realized, the working efficiency of the electric smelting furnace is improved, the energy consumption is reduced, and the production cost of enterprises is reduced; 2. a water-cooling furnace ring and a water-cooling furnace cover are arranged above the furnace body and used for cooling the upper surface of the smelted object, so that the temperature of the upper surface of the smelted object is reduced, a condensation layer is formed, the generation of smoke and dust is reduced, the working environment of a site is protected, and the health of workers is further ensured; 3. the condensation layer formed on the surface above the cooling smelting object effectively isolates air from entering the smelting object and oxidizing the smelting object with the furnace lining in a high-temperature state, so that the service life of the electric smelting furnace is ensured, and the maintenance cost is reduced.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the water-cooled furnace cover of the present invention.
Fig. 3 is a schematic structural view of the outer furnace cover ring of the present invention.
Fig. 4 is a schematic structural view of the inner furnace cover of the present invention.
Furnace body 1, discharge gate 11, furnace inside lining 12, water-cooled furnace lid 2, outer furnace lid circle 21, dust removal hole 211, interior bell 22, feed inlet 221, first cooling water inlet tube 23, first cooling water wet return 24, second cooling water inlet tube 25, second cooling water wet return 26, first spiral water-cooling channel 27, second spiral water-cooling channel 28, electrode 3, water-cooled furnace circle 4, third cooling water inlet tube 41, third cooling water wet return 42, third spiral water-cooling channel 43, handle hole 44, observe hole 45, hang sediment nail 46, refractory clay layer 47, support 5, connecting rod 6, dead lever 7, graphite end cap 8, automatic telescopic link 9.
The specific implementation mode is as follows:
as shown in fig. 1-4, an electric melting furnace for melting aluminum electrolysis overhaul slag comprises a furnace body 1 with an opening at the top, and a discharge hole 11 is formed in the side wall of the furnace body 1; the distance L between the discharge port 11 and the bottom of the furnace body 1 is 1.3 m; a furnace lining 12 is arranged in the furnace body 1, and the furnace lining 12 is built by carbon bricks; a water-cooled furnace cover 2 is covered at the top of the furnace body 1; a feed inlet 221 is formed in the center of the water-cooled furnace cover 2, 3 electrodes 3 uniformly penetrate and are fixed on the water-cooled furnace cover 2 around the feed inlet 221, and one end of each electrode 3 is located in the furnace body 1.
The water-cooled furnace cover 2 comprises an outer furnace cover ring 21 and an inner furnace cover 22, the inner furnace cover 22 is fixed in the outer furnace cover ring 21, a dust removal hole 211 is formed in the outer furnace cover ring 21, a feed inlet 221 is formed in the center of the inner furnace cover 22, and the electrode 3 penetrates and is fixed on the inner furnace cover 22; a first cooling water inlet pipe 23 is communicated with the edge of the outer furnace cover ring 21, and a first cooling water return pipe 24 is communicated with the inner side of the outer furnace cover ring 21; a second cooling water inlet pipe 25 is communicated and arranged on the inner side of the inner furnace cover 22, and a second cooling water return pipe 26 is communicated and arranged on the edge of the inner furnace cover 22; a first spiral water-cooling channel 27 communicated with the first cooling water inlet pipe 23 and the first cooling water return pipe 24 is arranged in the outer furnace cover ring 21, so that the cooling efficiency of cooling water is improved; a second spiral water-cooling channel 28 communicated with a second cooling water inlet pipe 25 and a second cooling water return pipe 26 is arranged in the inner furnace cover 22, and cooling water is respectively introduced into the outer furnace cover ring 21 and the inner furnace cover 22 to effectively ensure the cooling effect.
A water-cooling furnace ring 4 with a hollow inner part is also arranged between the water-cooling furnace cover 2 and the furnace body 1; a third cooling water inlet pipe 41 is communicated and arranged on one side of the outer side wall of the water-cooled furnace ring 4 close to the furnace body 1, a third cooling water return pipe 42 is communicated and arranged on one side of the outer side wall of the water-cooled furnace ring 4 close to the water-cooled furnace cover 2, and a third spiral water-cooling channel 43 communicated with the third cooling water inlet pipe 41 and the third cooling water return pipe 42 is arranged in the water-cooled furnace ring 4; an operation hole 44 and an observation hole 45 are formed in the side wall of the water-cooling furnace ring 4, the operation hole 44 is used for a worker to push materials flat, and the observation hole 45 is used for penetrating through the material smelting condition; a plurality of slag hanging nails 46 are fixed on the inner wall of the water-cooling furnace ring 4 to play a role of increasing friction, so that a refractory mud layer 47 is well fixed on the inner wall of the water-cooling furnace ring 4, and the refractory mud layer 47 is coated on the inner wall of the water-cooling furnace ring 4; the slag adhering nails 46 are embedded in the refractory mortar layer 47.
A support 5 is arranged on the side wall of the furnace body 1 above the discharge port 11, one end of the support 5 is fixed on the side wall of the furnace body 1, the other end of the support 5 is provided with a connecting rod 6, one end of the connecting rod 6 is rotatably hinged on the support 5, the other end of the connecting rod 6 is fixedly connected with a graphite plug 8 through a fixing rod 7, and the graphite plug 8 is a frustum-shaped graphite plug; the large-diameter end of the graphite plug 8 is fixed on the fixed rod 7, and the small-diameter end of the graphite plug 8 is movably inserted into the discharge hole 11 and used for plugging the discharge hole 11; be connected between support 5 and connecting rod 6 and be provided with automatic telescopic link 9, the one end of automatic telescopic link 9 rotates and articulates on support 5, and the other end of automatic telescopic link 9 rotates and articulates on connecting rod 6.
The working principle is as follows: after a certain amount of materials are added from the feeding hole 221, the materials are added through the electrode 3 for smelting, after a certain time of smelting, the automatic telescopic rod 9 is opened and started, so that the telescopic end of the automatic telescopic rod 9 extends out, the graphite plug 8 plugged in the discharging hole 11 is pulled out from the discharging hole 11, then the smelted materials in the furnace body 1 flow out from the discharging hole 11, after a certain amount of smelted materials flow out, the automatic telescopic rod 9 retracts the telescopic end of the automatic telescopic rod 9, the graphite plug 8 is plugged back into the discharging hole 11, feeding is continued from the feeding hole 221, smelting is continued, the electric smelting furnace does not need to be poured, time and labor are saved in operation, the continuous feeding and discharging work is realized, the working efficiency of the electric smelting furnace is improved, the energy consumption is reduced, and the production cost of enterprises is reduced; in the smelting process, cooling water is continuously introduced into the water-cooled furnace cover 2 and the water-cooled furnace ring 4 for cooling, so that the surface temperature above the smelted material is reduced, a condensation layer is formed, the generation of smoke and dust is reduced, the working environment of a site is protected, and the health of workers is further ensured; the condensation layer formed on the surface above the cooled smelting object effectively isolates air from entering the smelting object and oxidizing with the furnace lining 12 at a high temperature, so that the service life of the electric smelting furnace is ensured, and the maintenance cost is reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. An electric melting furnace for melting aluminum electrolysis overhaul slag is characterized by comprising a furnace body with an opening at the top, wherein a discharge hole is formed in the side wall of the furnace body; the distance L between the discharge hole and the bottom of the furnace body is 1-1.8 m; a furnace lining is arranged inside the furnace body; a water-cooled furnace cover is covered at the top of the furnace body; the center of water-cooled furnace lid has seted up the feed inlet around the feed inlet water-cooled furnace lid evenly runs through and is fixed with 3 electrodes, the one end of electrode is located in the furnace body.
2. The electric smelting furnace for smelting the aluminum electrolysis overhaul slag according to claim 1, wherein the water-cooled furnace cover comprises an outer furnace cover ring and an inner furnace cover, the inner furnace cover is fixed in the outer furnace cover ring, a dust removal hole is formed in the outer furnace cover ring, the feed inlet is formed in the center of the inner furnace cover, and the electrode is fixedly penetrated on the inner furnace cover; a first cooling water inlet pipe is communicated with the edge of the outer furnace cover ring, and a first cooling water return pipe is communicated with the inner side of the outer furnace cover ring; and a second cooling water inlet pipe is communicated with the inner side of the inner furnace cover, and a second cooling water return pipe is communicated with the edge of the inner furnace cover.
3. An electric melting furnace for melting aluminum electrolysis overhaul slag according to claim 2, wherein a first spiral water cooling channel communicated with the first cooling water inlet pipe and the first cooling water return pipe is arranged in the outer furnace cover ring; and a second spiral water-cooling channel communicated with the second cooling water inlet pipe and the second cooling water return pipe is arranged in the inner furnace cover.
4. An electric smelting furnace for smelting aluminium electrolysis overhaul slag according to any one of claims 1 to 3, wherein a water-cooling furnace ring with a hollow inner part is further arranged between the water-cooling furnace cover and the furnace body; the water-cooling furnace circle lateral wall is close to one side intercommunication of furnace body is provided with the third cooling water inlet tube the water-cooling furnace circle lateral wall is close to one side intercommunication of water-cooling furnace lid is provided with the third cooling water wet return the inside of water-cooling furnace circle be provided with the third cooling water inlet tube with the third spiral water-cooling channel of third cooling water wet return intercommunication.
5. An electric smelting furnace for smelting aluminium electrolysis overhaul slag according to claim 4, wherein the side wall of the water-cooling furnace ring is provided with an operation hole and an observation hole; a plurality of slag hanging nails are fixed on the inner wall of the water-cooling furnace ring, and a refractory mud layer is coated on the inner wall of the water-cooling furnace ring; the slag adhering nail is embedded in the refractory mortar layer.
6. An electric smelting furnace for smelting aluminium electrolysis overhaul slag according to claim 1, wherein the furnace lining is built by carbon bricks.
7. The electric melting furnace for melting the aluminum electrolysis overhaul slag according to claim 1, wherein a support is arranged on the side wall of the furnace body above the discharge port, one end of the support is fixed on the side wall of the furnace body, the other end of the support is provided with a connecting rod, one end of the connecting rod is rotatably hinged on the support, the other end of the connecting rod is fixedly connected with a graphite plug through a fixing rod, and the graphite plug is movably inserted in the discharge port; the automatic telescopic rod is connected and arranged between the support and the connecting rod, one end of the automatic telescopic rod is rotatably hinged on the support, and the other end of the automatic telescopic rod is rotatably hinged on the connecting rod.
8. An electric melting furnace for melting aluminum electrolysis overhaul slag according to claim 7, wherein the graphite plug is a frustum cone-shaped graphite plug; the large-diameter end of the graphite plug is fixed on the fixed rod, and the small-diameter end of the graphite plug is movably inserted in the discharge port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121629338.5U CN215261152U (en) | 2021-07-15 | 2021-07-15 | Electric melting furnace for smelting aluminum electrolysis overhaul slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121629338.5U CN215261152U (en) | 2021-07-15 | 2021-07-15 | Electric melting furnace for smelting aluminum electrolysis overhaul slag |
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| Publication Number | Publication Date |
|---|---|
| CN215261152U true CN215261152U (en) | 2021-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121629338.5U Active CN215261152U (en) | 2021-07-15 | 2021-07-15 | Electric melting furnace for smelting aluminum electrolysis overhaul slag |
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| CN (1) | CN215261152U (en) |
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2021
- 2021-07-15 CN CN202121629338.5U patent/CN215261152U/en active Active
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