CN217877095U - Iron notch structure of large-scale airtight titanium slag electric furnace - Google Patents
Iron notch structure of large-scale airtight titanium slag electric furnace Download PDFInfo
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- CN217877095U CN217877095U CN202220870528.4U CN202220870528U CN217877095U CN 217877095 U CN217877095 U CN 217877095U CN 202220870528 U CN202220870528 U CN 202220870528U CN 217877095 U CN217877095 U CN 217877095U
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Abstract
The utility model belongs to the technical field of titanium slag smelting equipment to when solving among the prior art and going out the iron, the unable damage and the short technical problem of iron notch life of avoiding the resistant firebrick of iron notch, based on this, provide a large-scale airtight titanium slag electric stove iron notch structure, including titanium slag electric stove body and the iron notch of setting on titanium slag electric stove body, the iron notch includes permanent firebrick layer, semi-permanent firebrick layer, gap bridge support fixed bed, molten iron passageway and iron notch frame, molten iron passageway outer lane outwards is provided with semi-permanent firebrick layer, permanent firebrick layer and gap bridge support fixed bed in proper order, the iron notch frame sets up in titanium slag electric stove body outer wall, semi-permanent firebrick layer can be dismantled and set up in the space that permanent firebrick layer was its reservation. The iron notch structure of the large-scale airtight titanium slag electric furnace has the advantages of reducing the damage of the refractory bricks and prolonging the service life of the refractory bricks.
Description
Technical Field
The utility model relates to a titanium slag smelting equipment technical field especially relates to a large-scale airtight titanium slag electric stove iron notch structure.
Background
The main raw materials of the titanium industry are ilmenite and titanium-rich materials, which include titanium slag, synthetic rutile and natural rutile. Ilmenite is used as a raw material for producing titanium slag, and impurity elements such as iron, calcium, magnesium and the like are removed to the maximum extent, so that titanium is enriched. The high titanium slag is a titanium raw material which is smelted by taking titanium concentrate as a raw material and contains high titanium dioxide, and the high titanium slag is dominant in titanium-rich materials in the world.
The titanium slag is produced by adopting an electric furnace smelting process. The method is divided according to the shape of an electric furnace, and the electric furnace used for smelting the titanium slag comprises a circular furnace and a rectangular furnace; the electric furnace is divided in a closed manner, and the electric furnaces used for smelting the titanium slag can be divided into a closed electric furnace, a semi-closed electric furnace and an open electric furnace. However, semi-enclosed furnaces and open furnaces suffer from serious contamination with dust, exhaust gases and noise.
The tap hole of the titanium slag electric furnace is mainly used for discharging smelted molten iron. The service life of the iron notch occupies an important position in the long-term, high-efficiency and stable operation process of the large-scale closed titanium slag electric furnace; if the iron notch is not well maintained, the service life of the iron notch is short, the iron notch needs to be maintained within one week, and the refractory material in the channel has certain potential safety hazard during replacement.
When a large-scale closed titanium slag electric furnace in the same industry in China at present is subjected to tapping operation, drilling is firstly carried out, then burning is carried out, on one hand, a refractory material can be damaged in the process, on the other hand, the oxygen lance is adopted for burning, the levelness of an opening of the iron notch cannot be ensured, the situation of burning deviation exists, the burning deviation is upward, and the flow of molten iron is small; the burning mouth is deviated downwards, the iron in the furnace is less, and the next tapping of the furnace is influenced.
Disclosure of Invention
An embodiment of the utility model provides a large-scale airtight titanium slag electric stove iron notch structure for solve prior art when going out the iron, can't avoid the resistant firebrick's of iron notch damage and the short technical problem of iron notch life.
The embodiment of the utility model provides a large-scale airtight titanium slag electric stove iron notch structure, including titanium slag electric stove body and the iron notch of setting on titanium slag electric stove body, the iron notch includes permanent firebrick layer, semi-permanent firebrick layer, gap bridge support fixed bed, molten iron passageway and iron notch frame, molten iron passageway outer lane outwards is provided with semi-permanent firebrick layer, permanent firebrick layer and gap bridge support fixed bed in proper order, the iron notch frame sets up in titanium slag electric stove body outer wall, semi-permanent firebrick layer can be dismantled and set up in the space that permanent firebrick layer was its reservation on the permanent firebrick layer, the molten iron passageway link up to predetermine and forms in semi-permanent firebrick layer, and with the central line on semi-permanent firebrick layer is its axis, semi-permanent firebrick in situ portion is equipped with the copper water pipe, the business turn to the water end of copper water pipe all sets up the lateral surface on semi-permanent firebrick layer.
The working principle and the process are as follows:
the permanent firebrick layer is not easy to remove and rebuild, and the semipermanent firebrick layer is convenient to remove and rebuild from the outside of the electric furnace when a taphole is repaired and has a longer service life, so the semipermanent firebrick layer is called as the semipermanent firebrick layer, and the semipermanent firebrick layer which is detachably arranged is more favorable for more convenient replacement and maintenance when the semipermanent firebrick layer is damaged; the arrangement of the gap bridge supporting and fixing layer is beneficial to avoiding damaging the furnace shell of the titanium slag electric furnace body when the semi-permanent refractory brick layer is replaced; the temperature of the semi-permanent refractory brick layer of the taphole is reduced by injecting cold water into the copper water pipe and under the action of continuous circulating water cooling, and the inner wall of the molten iron channel forms a solidified shell of metal or slag due to the adoption of forced cooling, so that the erosion and corrosion of the taphole are prevented, the service life of the taphole is more than 5 years and 3-5 times of that of other tapholes, and the taphole bricks in the semi-permanent refractory brick layer are easy to replace and maintain, thereby greatly improving the production efficiency; the temperature of the taphole is reduced through the continuous circulating water cooling effect, thereby prolonging the service life of the taphole.
Further, the exit of molten iron passageway is equipped with a plurality of arc building blocks, the arc building block is inboard to cooperate with semi-permanent firebrick layer, the arc building block outside has a first wedge face, and all arc building blocks constitute a cover jointly and establish the ring at molten iron passageway exit end, the indisputable mouthful frame is inboard to combine together with the arc building block outside to the shaping of junction has the second wedge face with first wedge face matched with, the arc building block is made by silicon carbide material.
Different heat can be obtained among different arc-shaped building blocks through heat transfer, so that the nonuniformity of temperature distribution at the iron notch is reduced, and the size of a gap among the arc-shaped building blocks can be adjusted slightly under the action of thermal expansion and cold contraction, so that the generated thermal stress is released; the temperature of the molten iron is relatively low when the molten iron flows to the combined surface of the semi-permanent refractory brick layer and the arc-shaped building block, so that the corrosion of the molten iron to the combined surface can be reduced, the service life of an electric furnace taphole can be prolonged, and the second wedge-shaped surface of the taphole frame is matched with the first wedge-shaped surface of the arc-shaped building block to fix the arc-shaped building block.
Furthermore, the iron notch frame is connected with the gap bridge supporting and fixing layer through bolts.
Furthermore, the gap bridge supporting and fixing layer is composed of gap bridge supporting bricks.
Further, a tapping groove is arranged below the tapping hole.
The tapping spout is provided for guiding the flow of molten iron.
Furthermore, the tapping groove is obliquely arranged downwards, and the inner bottom surface of the tapping groove is of a V-shaped structure.
The setting of iron notch slope is favorable to the molten iron to flow fast, prevents the deposit on the iron notch.
To sum up, the utility model has the advantages that:
the utility model improves the service life of the taphole by matching the detachably arranged semi-permanent firebrick layer with the permanent firebrick layer, and can be conveniently and timely replaced when the semi-permanent firebrick layer is damaged; by injecting cold water into the copper water pipe, the temperature of the semi-permanent refractory brick layer of the taphole is reduced through the continuous circulating water cooling effect, and the inner wall of the molten iron channel forms a solidified shell of metal or slag due to the adoption of forced cooling, so that the erosion of the taphole is prevented, the service life of the taphole reaches more than 5 years, which is 3-5 times of that of other tapholes, and the taphole bricks in the semi-permanent refractory brick layer are easy to replace and maintain, thereby greatly improving the production efficiency.
Drawings
FIG. 1 is a front view of the overall structure of the present invention;
fig. 2 is a side sectional view of the present invention.
In the figure: 1. a titanium slag electric furnace body; 2. a taphole; 3. a permanent refractory brick layer; 4. a semi-permanent firebrick layer; 5. the gap bridge supports the fixed layer; 6. a molten iron passage; 7. a taphole frame; 8. a copper water pipe; 9. arc-shaped building blocks; 10. a tapping channel.
Detailed Description
Example 1:
as shown in fig. 1-2, a large-scale airtight titanium slag electric furnace taphole structure, including titanium slag electric furnace body 1 and the taphole 2 of setting on titanium slag electric furnace body 1, the taphole 2 includes permanent firebrick layer 3, semi-permanent firebrick layer 4, fixed layer 5 is supported in the gap bridge, molten iron passageway 6 and taphole frame 7, molten iron passageway 6 outer lane outwards is provided with semi-permanent firebrick layer 4 in proper order, permanent firebrick layer 3 and gap bridge support fixed layer 5, taphole frame 7 sets up in titanium slag electric furnace body 1 outer wall, semi-permanent firebrick layer 4 can be dismantled and set up in the space that permanent firebrick layer 3 reserved for it, molten iron passageway 6 is predetermine to form in semi-permanent firebrick layer 4 with lining up, and use the central line of semi-permanent firebrick layer 4 as its axis, semi-permanent firebrick layer 4 is inside to be equipped with copper water pipe 8, the business turn to water end of copper water pipe 8 all sets up the lateral surface on semi-permanent firebrick layer 4.
The working principle and the process are as follows:
the permanent refractory brick layer 3 is not easy to remove and rebuild, and the semi-permanent refractory brick layer 4 is convenient to remove and rebuild from the outside of the electric furnace when the taphole 2 is repaired and has a longer service life, so the semi-permanent refractory brick layer 4 is called as the semi-permanent refractory brick layer 4, and the semi-permanent refractory brick layer 4 which is detachably arranged is more beneficial to more convenient replacement and maintenance when the semi-permanent refractory brick layer 4 is damaged; the arrangement of the gap bridge supporting and fixing layer 5 is beneficial to avoiding damaging the furnace shell of the titanium slag electric furnace body 1 when the semi-permanent refractory brick layer 4 is replaced; by injecting cold water into the copper water pipe 8, the temperature of the semi-permanent refractory brick layer 4 of the taphole 2 is reduced through the continuous circulating water cooling effect, and because forced cooling is adopted, the inner wall of the molten iron channel 6 forms a solidified shell of metal or slag, so that the erosion and corrosion of the taphole 2 are prevented, the service life of the taphole reaches more than 5 years and is 3-5 times of that of other tapholes 2, and the taphole 2 bricks in the semi-permanent refractory brick layer are easy to replace and maintain, thereby greatly improving the production efficiency; the temperature of the tap hole 2 is reduced by the continuous circulating water cooling effect, so that the service life of the tap hole 2 is prolonged.
In another embodiment of the present invention, as shown in fig. 1 and 2, a plurality of arc-shaped blocks 9 are disposed at the exit of the molten iron passage 6, the inner side of each arc-shaped block 9 is matched with the semi-permanent firebrick layer 4, the outer side of each arc-shaped block 9 has a first wedge-shaped surface, all the arc-shaped blocks 9 jointly form a ring sleeved at the exit end of the molten iron passage 6, the inner side of the taphole frame 7 is combined with the outer side of each arc-shaped block 9, and the combination is formed with a second wedge-shaped surface matched with the first wedge-shaped surface, and the arc-shaped blocks 9 are made of silicon carbide material.
Different arc-shaped building blocks 9 can obtain different heat through heat transfer, so that the nonuniformity of temperature distribution on the taphole 2 is reduced, and the size of gaps among the arc-shaped building blocks 9 can be adjusted slightly under the action of thermal expansion and cold contraction, so that the generated thermal stress is released; the temperature of the molten iron is relatively low when the molten iron flows to the combined surface of the semi-permanent refractory brick layer 4 and the arc-shaped building blocks 9, so that the erosion of the molten iron to the combined surface can be reduced, the service life of the electric furnace taphole 2 can be prolonged, and the second wedge-shaped surface of the taphole frame 7 is matched with the first wedge-shaped surface of the arc-shaped building blocks 9 to fix the arc-shaped building blocks 9.
In another embodiment of the present invention, as shown in fig. 1 and fig. 2, the taphole frame 7 is connected to the bridge support fixing layer 5 by bolts.
In another embodiment of the present invention, the bridge-supporting fixing layer 5 is composed of bridge-supporting bricks. The bridge-supporting brick is a conventional bridge brick.
In another embodiment of the present invention, as shown in fig. 1 and 2, a tapping spout 10 is provided below the tapping hole 2.
The tapping runner 10 is provided to guide the flow of molten iron.
In another embodiment of the present invention, as shown in fig. 1 and 2, the tapping runner 10 is disposed obliquely downward, and the inner bottom surface of the tapping runner 10 is formed in a V-shaped structure. The thickness of the tapping runner 10 is 1cm.
The inclined arrangement of the tapping runner 10 is beneficial to the rapid flow of molten iron and prevents the deposition on the tapping runner 10.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (6)
1. The utility model provides a large-scale airtight titanium slag electric stove iron notch structure, includes titanium slag electric stove body and the iron notch of setting on titanium slag electric stove body, a serial communication port, the iron notch includes permanent firebrick layer, semi-permanent firebrick layer, crosses the bridge and supports fixed bed, molten iron passageway and iron notch frame, molten iron passageway outer lane outwards is provided with semi-permanent firebrick layer, permanent firebrick layer and crosses the bridge in proper order and supports the fixed bed, the iron notch frame sets up in titanium slag electric stove body outer wall, semi-permanent firebrick layer can be dismantled and set up in the space that permanent firebrick layer was reserved for it on permanent firebrick layer, molten iron passageway through the ground predetermines formation in semi-permanent firebrick layer, and with the central line on semi-permanent firebrick layer is its axis, semi-permanent firebrick in situ portion is equipped with the copper water pipe, the water pipe advance, the permanent play water end all sets up the lateral surface on semi-permanent firebrick layer.
2. The taphole structure of the large-scale airtight titanium slag electric furnace of claim 1, wherein a plurality of arc-shaped blocks are arranged at the outlet of the molten iron channel, the inner side of each arc-shaped block is matched with the semi-permanent refractory brick layer, a first wedge-shaped surface is arranged on the outer side of each arc-shaped block, all the arc-shaped blocks jointly form a circular ring sleeved at the outlet end of the molten iron channel, the inner side of the taphole frame is combined with the outer side of each arc-shaped block, a second wedge-shaped surface matched with the first wedge-shaped surface is formed at the joint, and the arc-shaped blocks are made of silicon carbide materials.
3. The iron notch structure of the large-scale closed titanium slag electric furnace of claim 2, wherein the iron notch frame is connected with the gap bridge supporting and fixing layer through bolts.
4. The taphole structure of the large-scale closed titanium slag electric furnace of claim 3, wherein the gap bridge supporting and fixing layer is composed of gap bridge supporting bricks.
5. The taphole structure of the large-scale closed titanium slag electric furnace according to claim 1, characterized in that a tapping channel is arranged below the tapping hole.
6. The taphole structure of the large-scale closed titanium slag electric furnace according to claim 5, characterized in that the tapping channel is arranged obliquely downwards, and the inner bottom surface of the tapping channel is of a V-shaped structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220870528.4U CN217877095U (en) | 2022-04-14 | 2022-04-14 | Iron notch structure of large-scale airtight titanium slag electric furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220870528.4U CN217877095U (en) | 2022-04-14 | 2022-04-14 | Iron notch structure of large-scale airtight titanium slag electric furnace |
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| Publication Number | Publication Date |
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| CN217877095U true CN217877095U (en) | 2022-11-22 |
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| CN202220870528.4U Active CN217877095U (en) | 2022-04-14 | 2022-04-14 | Iron notch structure of large-scale airtight titanium slag electric furnace |
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| CN (1) | CN217877095U (en) |
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- 2022-04-14 CN CN202220870528.4U patent/CN217877095U/en active Active
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