CN219385276U - High-efficiency energy-saving zinc refining furnace - Google Patents
High-efficiency energy-saving zinc refining furnace Download PDFInfo
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- CN219385276U CN219385276U CN202320438754.XU CN202320438754U CN219385276U CN 219385276 U CN219385276 U CN 219385276U CN 202320438754 U CN202320438754 U CN 202320438754U CN 219385276 U CN219385276 U CN 219385276U
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Abstract
The utility model discloses a high-efficiency energy-saving zinc refining furnace, which comprises a furnace body and a smoke exhaust pipe arranged at the top of the furnace body, wherein the inner space of the furnace body is divided into a liquation pool and a refining pool through a partition wall, a smelting burner port is arranged on the side wall of the liquation pool opposite to the partition wall, a charging port and an access door are sequentially arranged on the side wall of the liquation pool adjacent to the partition wall, a plurality of fire baffle walls are arranged at intervals at the top in the liquation pool, a liquid outlet and a slag outlet are sequentially arranged on the side wall of the refining pool opposite to the partition wall from top to bottom, a refining burner port is arranged on the side wall of the refining pool adjacent to the partition wall, a smoke exhaust cavity is arranged in the upper part of the partition wall, the liquation pool is respectively communicated with the smoke exhaust cavity through a smoke exhaust hole, and a pool gap port is arranged at the lower part of the partition wall. The utility model has high heat utilization rate, is not easy to burn out of the smoke exhaust pipeline, can improve the purity of zinc liquid, is efficient and energy-saving, and has obvious economic value and social value.
Description
Technical Field
The utility model relates to the technical field of zinc smelting, in particular to a high-efficiency energy-saving zinc refining furnace.
Background
In the zinc smelting industry, crude zinc needs to be refined by a refining furnace, the traditional refining furnace consists of a liquation pool (commonly known as a big pool) and a refining pool (commonly known as a small pool) which are connected in series, and the refining furnace is actually a reverberatory furnace, and the main process is as follows: the zinc liquid is subjected to liquation refining in the liquation tank to separate iron, lead and zinc so as to achieve the aim of reducing the iron content and lead content in the zinc liquid, then the zinc liquid flows into the refining tank from the liquation tank, the zinc liquid is further heated in the refining tank, impurities in the zinc liquid are separated again, the zinc liquid is purified, and the continuous feeding of the rectifying tower is facilitated.
The refining furnace has the advantages of small investment, short construction period, quick response, strong adaptability to raw materials, capability of continuously producing high-purity zinc and the like, is widely adopted by zinc-smelting enterprises, but has some defects in the actual production process: firstly, the residence time of high-temperature flue gas in a liquation tank is too short, and most of combustion flue gas can be rapidly and directly discharged through a flue opening in the middle of a refining furnace, so that on one hand, direct waste of a flue gas heat source is caused, the heating efficiency of zinc liquid in the refining furnace is reduced, on the other hand, along with continuous discharge of the high-temperature flue gas, burning loss of a flue gas pipeline is easily caused, and the maintenance frequency of the flue gas pipeline is increased; secondly, when the zinc liquid in the liquation pool flows to the refining pool, the scum on the surface of the zinc liquid also flows to the refining pool, thereby reducing the purity and refining efficiency of the zinc liquid and increasing the difficulty and load of subsequent refining. Therefore, development of a high-efficiency energy-saving zinc refining furnace with high heat utilization rate, difficult burning loss of a smoke exhaust pipeline and capability of improving the purity of zinc liquid is objectively required.
Disclosure of Invention
The utility model aims to provide the high-efficiency energy-saving zinc refining furnace which has high heat utilization rate, is not easy to burn a smoke exhaust pipeline and can improve the purity of zinc liquid.
The utility model aims at realizing the purposes by comprising a furnace body and a smoke exhaust pipe arranged at the top of the furnace body, wherein the inner space of the furnace body is divided into a liquation tank and a refining tank by a partition wall, a smelting burner port is arranged on the side wall of the liquation tank opposite to the partition wall, a charging port and an access door are sequentially arranged on the side wall of the liquation tank adjacent to the partition wall, a plurality of fire baffle walls are arranged at intervals at the top in the liquation tank, a liquid outlet and a slag outlet are sequentially arranged on the side wall of the refining tank opposite to the partition wall from top to bottom, a refining burner port is arranged on the side wall of the refining tank adjacent to the partition wall, a smoke exhaust cavity is arranged in the upper part of the partition wall, the liquation tank is respectively communicated with the smoke exhaust cavity by a communication hole, the smoke exhaust pipe is communicated with the smoke exhaust cavity by a smoke exhaust hole, and a tank flow port is arranged at the lower part of the partition wall.
Further, the number of the fire-blocking walls is 2-3.
Further, heat radiation reflecting layers are arranged at the tops of the liquation tank and the refining tank.
Further, a water jacket is arranged on the outer wall of the smoke exhaust pipe.
Further, the upper portion of the fire-blocking wall is provided with a vent hole.
Further, the lower end face of the fire-blocking wall is in an arch shape with the middle part protruding upwards.
Furthermore, the furnace body, the partition wall and the fire-resistant wall are all built by adopting refractory bricks.
When the utility model is used, crude zinc liquid flowing out from the bottom of the lead tower is added into the liquation tank through the feed inlet, flame heating is carried out on the crude zinc liquid through the smelting burner port, the temperature of the crude zinc liquid is increased, the crude zinc liquid is layered in the liquation tank, the upper layer is scum, the middle layer is zinc liquid, the lower layer is bottom slag, wherein the scum and the bottom slag are impurities and other metal components mixed in the zinc liquid, then the zinc liquid in the middle layer flows into the refining tank from the flow port between the tanks, the crude zinc liquid is heated again by the refining burner port, the impurities in the crude zinc liquid are separated again, and the refined zinc liquid is continuously fed to the lead tower. In the process, the high-temperature flue gas generated in the liquation tank rises to the top, and flows back and forth in the liquation tank under the blocking action of the fire blocking wall, so that the flue gas flow path is prolonged, the residence time of the high-temperature flue gas in the liquation tank is prolonged, the heat exchange efficiency of the high-temperature flue gas and the crude zinc liquid is further improved, the waste of flue gas heat is reduced, and the temperature of the crude zinc liquid can be raised higher and more energy-saving under the condition of consuming the same fuel; secondly, compared with the traditional smoke discharging mode, the high-temperature smoke is blocked by the fire blocking wall, so that the high-temperature smoke can be prevented from being directly discharged, the temperature of the smoke during discharging is further reduced, and the burning loss probability and maintenance frequency of the smoke discharging pipe are reduced; finally, the flow port between the tanks arranged at the lower part of the partition wall can ensure that the zinc liquid at the middle layer in the liquation tank is led into the refining tank, and prevent scum and bottom slag from entering the refining tank, thereby improving the refining efficiency and the purity of the refined zinc liquid. The utility model has high heat utilization rate, is not easy to burn out of the smoke exhaust pipeline, can improve the purity of zinc liquid, is efficient and energy-saving, and has obvious economic value and social value.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a schematic cross-sectional view of A-A of FIG. 1;
in the figure: 1-furnace body, 2-smoke exhaust pipe, 3-partition wall, 4-liquation tank, 5-refining tank, 6-smelting burner port, 7-charging port, 8-access door, 9-fire-blocking wall, 10-liquid outlet, 11-slag discharge port, 12-refining burner port, 13-smoke exhaust cavity, 14-communication hole, 15-smoke exhaust hole, 16-tank interval port, 17-heat radiation reflecting layer, 18-water jacket and 19-vent hole.
Description of the embodiments
The utility model is further described below with reference to the accompanying drawings, without limiting the utility model in any way, and any alterations or modifications based on the utility model are within the scope of the utility model.
As shown in fig. 1 to 2, the utility model comprises a furnace body 1 and a smoke exhaust pipe 2 arranged at the top of the furnace body 1, the smoke exhaust pipe 2 is usually arranged at the top of the furnace body 1 and is used for exhausting smoke generated in the furnace body 1, the inner space of the furnace body 1 is divided into a liquation tank 4 and a refining tank 5 through a partition wall 3, crude zinc liquid discharged from the bottom of the lead tower is heated and smelted in the liquation tank 4, the temperature is further raised in the refining tank 5 and impurities in the crude zinc liquid are discharged again, the purity of the crude zinc liquid is improved, a smelting burner port 6 is arranged on the side wall of the liquation tank 4 opposite to the partition wall 3, when the utility model is used, natural gas or coal gas can be used as fuel to heat the crude zinc liquid through the smelting burner port 6 and the refining burner port 12, a charging port 7 and a maintenance door 8 are sequentially arranged on the side wall of the liquation tank 4 adjacent to the partition wall 3, and refined raw materials are charged into the liquation tank 4 from the charging port 7, observing the smelting condition of crude zinc liquid in the furnace through an access door 8, cleaning residues in the furnace, arranging a plurality of fire baffle walls 9 at intervals at the top in the liquation tank 4, arranging a liquid outlet 10 and a slag discharging opening 11 on the side wall of the refining tank 5 opposite to the partition wall 3 from top to bottom in sequence, continuously feeding a lead tower through the liquid outlet 10, discharging bottom slag in the furnace through the slag discharging opening 11, determining the quantity and the position according to actual needs, arranging a refining burner opening 12 on the side wall of the refining tank 5 adjacent to the partition wall 3, arranging an inspection opening on the side wall of the refining tank 5 opposite to the refining burner opening 12 for inspecting and removing residues, arranging a smoke discharging cavity 13 in the upper part of the partition wall 3, communicating the liquation tank 4 with the smoke discharging cavity 13 and the refining tank 5 with the smoke discharging cavity 13 through communication holes 14 respectively, the smoke exhaust pipe 2 is communicated with the smoke exhaust cavity 13 through a smoke exhaust hole 15, smoke generated in the liquation pond 4 and the refining pond 5 respectively enters the smoke exhaust cavity 13 from the communication hole 14, then enters the smoke exhaust pipe 2 from the smoke exhaust hole 15, and finally is discharged into a smoke waste heat recovery and utilization device, a smoke dust removal and purification device and other devices for unified treatment.
When the utility model is used, crude zinc liquid flowing out of the bottom of the lead tower is added into the liquation tank 4 through the feed port 7, the crude zinc liquid is heated by flame through the smelting burner port 6, the temperature of the crude zinc liquid is raised, the crude zinc liquid is layered in the liquation tank 4, the upper layer is scum, the middle layer is zinc liquid, the lower layer is bottom slag, wherein the scum and the bottom slag are impurities and other metal components mixed in the zinc liquid, then the zinc liquid in the middle layer flows into the refining tank 5 from the inter-tank flow port 16, the crude zinc liquid is heated again by the refining burner port 12, the impurities in the crude zinc liquid are separated again, and the refined zinc liquid is continuously fed into the lead tower. In the process, the high-temperature flue gas generated in the liquation tank 4 rises to the top, and flows back and forth up and down in the liquation tank 4 under the blocking action of the fire blocking wall 9, so that the flow path of the flue gas is prolonged, the residence time of the high-temperature flue gas in the liquation tank 4 is prolonged, the heat exchange efficiency of the high-temperature flue gas and the crude zinc liquid is further improved, the waste of flue gas heat is reduced, and the temperature of the crude zinc liquid can be improved higher and more energy is saved under the condition of consuming the same fuel; secondly, compared with the traditional smoke discharging mode, the high-temperature smoke is blocked by the fire blocking wall 9, so that the direct discharge of the high-temperature smoke can be avoided, the temperature of the smoke during the discharge is further reduced, and the burning loss probability and maintenance frequency of the smoke discharging pipe 2 are reduced; finally, the flow port 16 between the tanks arranged at the lower part of the partition wall 3 can ensure that the zinc liquid at the middle layer in the liquation tank 4 is led into the refining tank 5, thereby preventing scum and bottom slag from entering the refining tank 5 and improving the refining efficiency and the purity of the refined zinc liquid.
The lower part of the partition wall 3 is provided with an inter-tank flow port 16 communicated with the liquation tank 4 and the refining tank 5, and the inter-tank flow port 16 is used for communicating the liquation tank 4 and the refining tank 5, so that the crude zinc liquid in the liquation tank 4 can flow into the refining tank 5, the size, the height and the like of the crude zinc liquid can be determined according to actual needs, the crude zinc liquid can be conveniently conveyed, and the scum and bottom slag can be prevented from entering the refining tank 5.
Preferably, the number of the fire-blocking walls 9 is 2-3 according to the length of most of the refining furnace bodies 1 at present, and the specific number can be determined according to the actual size of the refining furnace bodies 1.
The top in liquation pond 4 and refining pond 5 is provided with thermal radiation reflection stratum 17, and thermal radiation reflection stratum 17 uses current thermal radiation reflection materials to make, can reflect the thermal radiation at liquation pond 4 and refining pond 5 top to the spelter, improves the thermal utilization ratio in the high temperature flue gas on the one hand, on the other hand improves the temperature of spelter, and then improves the heating efficiency of spelter.
The outer wall of the smoke exhaust pipe 2 is provided with the water jacket 18, the water jacket 18 is of an existing structure, the water jacket 18 is arranged on the outer wall of the smoke exhaust pipe 2, and when the smoke exhaust pipe is used, cooling water is introduced into the water jacket 18 to absorb heat on the smoke exhaust pipe 2, so that the temperature of the smoke exhaust pipe 2 is reduced, the smoke exhaust pipe 2 is prevented from being damaged due to high temperature, and the service life of the smoke exhaust pipe 2 is prolonged.
The upper part of the fire baffle wall 9 is provided with the vent hole 19, when the furnace is operated, the fire baffle wall 9 blocks high-temperature flue gas to enable the high-temperature flue gas to flow in a way of up and down reciprocating, but when shutdown maintenance is needed, part of flue gas is retained between the fire baffle wall 9 and between the fire baffle wall 9 and the side wall of the liquation tank 4, the heat dissipation of the furnace body 1 is slower due to the existence of the part of flue gas, long waiting time is needed usually, the temperature in the furnace can be reduced to a proper range, the waiting time of workers is long, and the vent hole 19 can provide a channel for the flow of the flue gas, so that the flow speed of the flue gas is accelerated, the heat dissipation speed of the furnace body 1 is further accelerated, and the maintenance time is shortened.
Preferably, the lower end face of the fire-blocking wall 9 is in an arch shape with the middle part protruding upwards, the arch structure is attractive in appearance, good in stress, material-saving, convenient to construct and durable.
Preferably, the furnace body 1, the partition wall 3 and the fire-blocking wall 9 are built by refractory bricks, the refractory bricks are called fire bricks for short, and the refractory materials which are made of refractory clay or other refractory raw materials are light yellow or brown, can resist the high temperature of 1580-1770 ℃, and have low creep rate, strong heat storage capacity and stable high-temperature volume.
The utility model can be modified on the basis of the existing refining furnace, when the refining furnace is modified, the height of the existing refining furnace is reduced under the condition that the length of the existing refining furnace is unchanged, the internal space of the refining furnace is reduced, the height of high-temperature flue gas is reduced, the distance between the high-temperature flue gas and the crude zinc is reduced, and the heating efficiency of the crude zinc is further improved under the premise of ensuring that the crude zinc in the furnace is unchanged.
Claims (7)
1. A high-efficiency energy-saving zinc refining furnace comprises a furnace body (1) and a smoke exhaust pipe (2) arranged at the top of the furnace body (1), and is characterized in that the inner space of the furnace body (1) is divided into a liquation pool (4) and a refining pool (5) through a partition wall (3), a smelting burner port (6) is arranged on the side wall of the liquation pool (4) opposite to the partition wall (3), a charging port (7) and an access door (8) are sequentially arranged on the side wall of the liquation pool (4) adjacent to the partition wall (3), a plurality of fire baffle walls (9) are arranged at the top interval in the liquation pool (4), a liquid outlet (10) and a slag discharge port (11) are sequentially arranged on the side wall of the refining pool (5) opposite to the partition wall (3), a refining burner port (12) is arranged on the side wall of the refining pool (5) adjacent to the partition wall (3), a smoke discharge cavity (13) is arranged in the upper part of the liquation pool (4) and the smoke discharge cavity (13), a smoke discharge hole (14) is respectively communicated with the smoke discharge cavity (15) through a communication hole (14) between the liquation pool (4) and the smoke discharge cavity (13), the lower part of the partition wall (3) is provided with a tank gap port (16) which is communicated with the liquation tank (4) and the refining tank (5).
2. The efficient and energy-saving zinc refining furnace according to claim 1, wherein the number of the fire-blocking walls (9) is 2-3.
3. The efficient and energy-saving zinc refining furnace according to claim 1 is characterized in that heat radiation reflecting layers (17) are arranged at the tops of the liquation tank (4) and the refining tank (5).
4. The efficient and energy-saving zinc refining furnace according to claim 1 is characterized in that a water jacket (18) is arranged on the outer wall of the smoke exhaust pipe (2).
5. The efficient and energy-saving zinc refining furnace according to claim 1, wherein the upper part of the fire-blocking wall (9) is provided with a vent hole (19).
6. The efficient and energy-saving zinc refining furnace according to claim 1 is characterized in that the lower end surface of the fire-blocking wall (9) is in an arch shape with the middle part protruding upwards.
7. The efficient and energy-saving zinc refining furnace according to claim 1 is characterized in that the furnace body (1), the partition wall (3) and the fire-blocking wall (9) are all built by refractory bricks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320438754.XU CN219385276U (en) | 2023-03-09 | 2023-03-09 | High-efficiency energy-saving zinc refining furnace |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320438754.XU CN219385276U (en) | 2023-03-09 | 2023-03-09 | High-efficiency energy-saving zinc refining furnace |
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| CN219385276U true CN219385276U (en) | 2023-07-21 |
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| CN202320438754.XU Active CN219385276U (en) | 2023-03-09 | 2023-03-09 | High-efficiency energy-saving zinc refining furnace |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116287765A (en) * | 2023-03-09 | 2023-06-23 | 宣威市泓澔金属科技有限公司 | High-efficiency energy-saving zinc refining furnace |
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- 2023-03-09 CN CN202320438754.XU patent/CN219385276U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116287765A (en) * | 2023-03-09 | 2023-06-23 | 宣威市泓澔金属科技有限公司 | High-efficiency energy-saving zinc refining furnace |
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