CN216347816U - Cooling type side-blown converter hearth - Google Patents
Cooling type side-blown converter hearth Download PDFInfo
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- CN216347816U CN216347816U CN202121975495.1U CN202121975495U CN216347816U CN 216347816 U CN216347816 U CN 216347816U CN 202121975495 U CN202121975495 U CN 202121975495U CN 216347816 U CN216347816 U CN 216347816U
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Abstract
The utility model provides a cooling type side-blown converter hearth which comprises a converter shell and a working layer refractory material arranged inside the converter shell, wherein a central furnace chamber is formed inside the working layer refractory material; a graphite carbon brick layer is arranged between the refractory material of the working layer and the inner wall of the furnace shell; the outer wall of the graphite carbon brick layer is connected with the inner wall of the furnace shell, and the inner wall of the graphite carbon brick layer is connected with the outer wall of the working layer refractory material. The cooling type side-blown converter hearth can effectively solve the problem that the impurity solubility in lead is increased and the quality of crude lead is influenced due to poor external heat dissipation performance of the existing side-blown converter.
Description
Technical Field
The utility model relates to the technical field of mining, in particular to a cooling type side-blown converter hearth.
Background
In the side-blown lead smelting industry, a side-blown furnace hearth is often used for lead smelting, the structure of the traditional side-blown furnace hearth is shown in the attached drawing 1, as can be seen from fig. 1, the traditional side-blown furnace hearth comprises a furnace shell 4 ', a bottom plate 1 ', clay bricks 2 ', a ramming material 3 ', two layers of bottom magnesia-chrome bricks 6 ' and a hearth cavity 7 ' are sequentially arranged in the furnace shell 4 ' from bottom to top, and in addition, a layer of side wall magnesia-chrome bricks 5 ' is further arranged on the inner wall of the furnace shell 4 '. Because the side wall and the bottom of the traditional side-blown converter are not provided with forced cooling measures, the side wall and the bottom of the traditional side-blown converter completely depend on natural heat dissipation, the cooling of lead in a furnace hearth is limited, more impurities in the crude lead are caused, and the quality of the crude lead is influenced.
Specifically, the traditional side-blown converter has poor external heat dissipation performance, and the temperature of the generated high-temperature lead bullion sinks to a hearth, so that the temperature is slowly reduced; during discharging, the temperature of lead is higher, so that the solubility of some impurities in the lead is increased, the quality of the crude lead is influenced, and more refining slag is generated in the subsequent crude lead refining section, so that the refining time is increased, and more slag forming agents are consumed.
Based on the above technical problems, a side-blown furnace capable of significantly reducing the solubility of impurities in lead is needed.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention aims to solve the problem that the existing side-blown converter has poor heat dissipation performance, which causes the solubility of impurities in lead to increase, and affects the quality of lead bullion.
The utility model provides a cooling type side-blown converter hearth which comprises a furnace shell and a working layer refractory material arranged inside the furnace shell, wherein a central furnace chamber is formed inside the working layer refractory material; a graphite carbon brick layer is arranged between the refractory material of the working layer and the inner wall of the furnace shell; wherein the content of the first and second substances,
the outer wall of the graphite carbon brick layer is connected with the inner wall of the furnace shell, and the inner wall of the graphite carbon brick layer is connected with the outer wall of the working layer refractory material.
In addition, the preferable structure is that the working layer refractory material comprises a bottom working layer refractory material and a side working layer refractory material, and the bottom working layer refractory material and the side working layer refractory material are both made of magnesite-chrome bricks; and the inner wall of the graphite carbon brick layer is connected with the outer wall of the refractory material of the side working layer.
In addition, the preferable structure is that the bottom working layer refractory material comprises two inverted arch magnesia-chrome brick layers which are overlapped up and down, and the side working layer refractory material comprises an annular magnesia-chrome brick layer; wherein the content of the first and second substances,
the peripheries of the two anti-arch magnesium-chromium brick layers at the bottom are connected with the bottoms of the annular magnesium-chromium brick layers at the side parts, so that the central furnace chamber with a semi-closed structure is formed.
Further, it is preferable that a cooling water passage is provided on an outer wall of the furnace shell.
In addition, the preferable structure is that the cooling water channel is spirally arranged on the outer wall of the furnace shell; and a water inlet is arranged at the lower end of the water cooling channel, and a water outlet is arranged at the upper end of the cooling water channel.
In addition, the cooling water channel is preferably formed by bending a steel plate and then welding the bent steel plate to the outer wall of the furnace shell.
In addition, the cooling water passage is preferably formed by bending a half-pipe structure formed by cutting a seamless steel pipe and then welding the bent half-pipe structure to the outer wall of the furnace shell.
In addition, it is preferable that a clay brick layer is provided between the bottom plate of the furnace shell and the bottom working layer refractory.
In addition, the preferable structure is that a ramming material layer is arranged between the bottom working layer refractory material and the clay brick layer; and a cooling air channel is embedded in the ramming material layer.
Compared with the prior art, the cooling type side-blown converter hearth has the following beneficial effects:
a graphite carbon brick layer is additionally arranged between the inner wall of the furnace shell and the side annular magnesia-chrome brick layer, and the side annular magnesia-chrome brick layer is directly contacted with high-temperature melt to resist the erosion of the melt; the graphite carbon brick layer has large thermal coefficient and fast heat conduction, and can quickly transfer the heat in the hearth to the furnace shell. The outer wall of the furnace shell is provided with a cooling water channel, so that the outward heat transfer of the furnace shell can be accelerated. A plurality of air cooling channels are designed in the ramming charge layer, so that forced cooling of the furnace bottom can be enhanced, and the ramming charge layer is safer. In conclusion, through the series of cooling treatment, on the premise of safety, the external heat dissipation capacity of the side working layer refractory material and the bottom working layer refractory material can be enhanced, and the temperature of the crude lead in the hearth can be reduced, so that the content of impurities in the crude lead is reduced, the quality of the crude lead is improved, and the workload of a crude lead refining section is reduced.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description and appended claims, taken in conjunction with the accompanying drawings.
In the drawings:
FIG. 1 is a front sectional view of a conventional side-blown converter hearth;
FIG. 2 is a front sectional view of a cooled side-blown furnace hearth according to an embodiment of the present invention.
Reference numerals: the furnace comprises a bottom plate 1 ', clay bricks 2 ', a ramming material 3 ', a furnace shell 4 ', side wall magnesia chrome bricks 5 ', bottom magnesia chrome bricks 6 ', a cylinder cavity 7 ', a bottom plate 1, a clay brick layer 2, a ramming material layer 3, a furnace shell 4, side working layer refractory materials 5, bottom working layer refractory materials 6, a central furnace cavity 7, a graphite carbon brick layer 8, a cooling water channel 9, a water inlet 10, a water outlet 11 and a cooling air channel 12.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate describing one or more embodiments.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
FIG. 2 is a front sectional view of a cooled side-blown furnace hearth according to an embodiment of the present invention.
As can be seen from fig. 2, the cooling type side-blown converter hearth provided by the present invention includes a furnace shell 4 and a working layer refractory material disposed inside the furnace shell 4, the working layer refractory material is used for carrying a high-temperature lead melt, a central furnace chamber 7 is formed inside the working layer refractory material, and the high-temperature lead melt is melted in the central furnace chamber 7.
In addition, in order to reduce the content of impurities in the crude lead, a graphite carbon brick layer 8 is arranged between the refractory material of the working layer and the inner wall of the furnace shell 4; wherein, the outer wall of the graphite carbon brick layer 8 is connected with the inner wall of the furnace shell 4, and the inner wall of the graphite carbon brick layer 8 is connected with the outer wall of the working layer refractory material. Because the graphite carbon brick layer has large thermal coefficient and fast heat conduction, the heat in the hearth can be quickly transferred to the furnace shell 4, thereby reducing the temperature of the crude lead in the hearth, further reducing the content of impurities in the crude lead and improving the quality of the crude lead.
Specifically, the working layer refractory material comprises a bottom working layer refractory material 6 and a side working layer refractory material 5, and the bottom working layer refractory material 6 and the side working layer refractory material 5 are both made of magnesia-chrome bricks; wherein, the inner wall of the graphite carbon brick layer 8 is connected with the outer wall of the refractory material 5 of the side working layer. It should be noted that, because of the properties of magnesite-chrome bricks, it can directly contact with high-temperature melt to resist erosion of the melt, so the working layer refractory material is made by magnesite-chrome bricks.
More specifically, the bottom working layer refractory material 6 comprises two inverted arch magnesium-chromium brick layers which are overlapped up and down, and the side working layer refractory material 5 comprises an annular magnesium-chromium brick layer; wherein, the peripheries of the two layers of reverse arch magnesia chrome brick layers at the bottom are connected with the bottoms of the annular magnesia chrome brick layers at the side parts so as to form a central furnace chamber 7 with a semi-closed structure. The annular magnesium chrome brick layer of lateral part and the anti-arch magnesium chrome brick layer of bottom can form the central furnace chamber 7 that has no edges and corners structure, can reduce the friction of high temperature lead fuse-element and working layer refractory material inner wall at flow in-process, promote whole device's stability, prolong its life.
In addition, the bottom support performance of the refractory material of the working layer can be further improved by arranging two layers of inverted arch magnesia-chrome bricks at the bottom; in addition, in the cooling type side-blown converter hearth provided by the utility model, the total thickness of the graphite carbon brick layer and the annular magnesia chrome brick layer is the thickness of the side wall magnesia chrome brick 5' of the original (or existing) side-blown converter hearth.
In addition, in order to further improve the cooling effect, a cooling water channel 9 is arranged on the outer wall of the furnace shell 4. The water cooling channel outside the furnace shell 4 can accelerate the heat conduction between the furnace shell 4 and the outside, thereby further reducing the temperature of the crude lead in the furnace hearth, further reducing the content of impurities in the crude lead and improving the quality of the crude lead.
Specifically, the cooling water channel 9 can be spirally arranged around the outer wall of the furnace shell 4 in a spiral mode from bottom to top; a water inlet 10 is provided at the lower end of the water cooling passage, and a water outlet 11 is provided at the upper end of the cooling water passage 9. The condensing mode of the water from the upper water inlet and the lower water outlet can utilize the cooling effect of the cooling water to the maximum extent. Of course, it is also possible to provide a plurality of cooling water channels 9 in the horizontal direction directly around the outer wall of the furnace shell 4, with a plurality of cooling water channels 9 operating simultaneously, in such a way that the cooling rate of the furnace shell 4 can be increased even though the demand for cooling water is relatively high.
It should be noted that the cooling water channel 9 can be made by using local materials, for example, the type of the cooling water channel can be made by bending a steel plate and then welding the steel plate to the furnace shell 4, or by welding a half of a split steel tube of a seamless steel tube for fluid transportation to the furnace shell 4.
Specifically, because the ground has a poor heat conduction effect, a clay brick layer 2 needs to be arranged between a bottom plate 1 of a furnace shell 4 and a bottom working layer refractory material 6, and a ramming material layer 3 needs to be arranged between the bottom working layer refractory material 6 and the clay brick layer 2; the erection of the refractory material of the whole working layer is realized through the clay brick layer 2 and the ramming material layer 3.
In addition, for further promoting the cooling effect of hearth, can bury cooling air passageway 12 underground in ramming material layer 3. Because the cooling air channel 12 is embedded in the ramming material layer 3, the outward heat dissipation of the furnace bottom of the furnace chamber frame can be accelerated; and the air cooling mode is safer.
The cooled side-blown furnace hearth according to the present invention is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the cooled side-blown converter hearth of the utility model described above without departing from the scope of the utility model. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (9)
1. A cooling type side-blown converter hearth comprises a furnace shell and a working layer refractory material arranged inside the furnace shell, wherein a central furnace chamber is formed inside the working layer refractory material; the furnace is characterized in that a graphite carbon brick layer is arranged between the refractory material of the working layer and the inner wall of the furnace shell; wherein the content of the first and second substances,
the outer wall of the graphite carbon brick layer is connected with the inner wall of the furnace shell, and the inner wall of the graphite carbon brick layer is connected with the outer wall of the working layer refractory material.
2. The cooled side-blown furnace hearth according to claim 1,
the working layer refractory material comprises a bottom working layer refractory material and a side working layer refractory material, and the bottom working layer refractory material and the side working layer refractory material are both made of magnesia-chrome bricks; and the inner wall of the graphite carbon brick layer is connected with the outer wall of the refractory material of the side working layer.
3. The cooled side-blown furnace hearth according to claim 2,
the bottom working layer refractory material comprises two inverted arch magnesium-chromium brick layers which are overlapped up and down, and the side working layer refractory material comprises an annular magnesium-chromium brick layer; wherein the content of the first and second substances,
the peripheries of the two reverse arch magnesium chromium brick layers are connected with the bottom of the annular magnesium chromium brick layer to form a semi-closed structure of the central furnace chamber.
4. The cooled side-blown furnace hearth according to claim 3,
and a cooling water channel is arranged on the outer wall of the furnace shell.
5. The cooled side-blown furnace hearth according to claim 4,
the cooling water channel is spirally arranged on the outer wall of the furnace shell; and a water inlet is arranged at the lower end of the water cooling channel, and a water outlet is arranged at the upper end of the cooling water channel.
6. The cooled side-blown furnace hearth according to claim 4,
the cooling water channel is formed by welding the steel plate bent and the outer wall of the furnace shell.
7. The cooled side-blown furnace hearth according to claim 4,
the cooling water channel is formed by welding a half-pipe structure formed by cutting open a seamless steel pipe and then bending the half-pipe structure with the outer wall of the furnace shell.
8. The cooled side-blown converter hearth according to any one of claims 2 to 7,
and a clay brick layer is arranged between the bottom plate of the furnace shell and the refractory material of the bottom working layer.
9. The cooled side-blown furnace hearth according to claim 8,
a ramming material layer is arranged between the bottom working layer refractory material and the clay brick layer; and the number of the first and second electrodes,
and a cooling air channel is embedded in the ramming material layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121975495.1U CN216347816U (en) | 2021-08-20 | 2021-08-20 | Cooling type side-blown converter hearth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121975495.1U CN216347816U (en) | 2021-08-20 | 2021-08-20 | Cooling type side-blown converter hearth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216347816U true CN216347816U (en) | 2022-04-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121975495.1U Active CN216347816U (en) | 2021-08-20 | 2021-08-20 | Cooling type side-blown converter hearth |
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|---|---|
| CN (1) | CN216347816U (en) |
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2021
- 2021-08-20 CN CN202121975495.1U patent/CN216347816U/en active Active
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