CN219260141U - Dust collection and nonferrous metal recovery system for zinc-containing electric furnace smoke dust - Google Patents
Dust collection and nonferrous metal recovery system for zinc-containing electric furnace smoke dust Download PDFInfo
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- CN219260141U CN219260141U CN202223320614.7U CN202223320614U CN219260141U CN 219260141 U CN219260141 U CN 219260141U CN 202223320614 U CN202223320614 U CN 202223320614U CN 219260141 U CN219260141 U CN 219260141U
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Abstract
The utility model relates to a dust collection and nonferrous metal recovery system of zinc-containing electric furnace smoke dust, which comprises a fluidized bed furnace, a cyclone dust collector, a condenser and a cloth bag dust collector, wherein one side of the fluidized bed furnace is provided with a feed inlet, the upper end of the fluidized bed furnace is connected with the cyclone dust collector through a pipeline, and the lower end of the fluidized bed furnace is connected with an inert gas source; the upper end of the cyclone dust collector is connected with a condenser through a pipeline, the condenser is connected with a cloth bag dust collector, and the cloth bag dust collector is connected with a fan and an exhaust chimney. The method separates and recycles high-value nonferrous metals in the electric furnace dust, reduces the harm of heavy metal emission to the environment, improves the yield of nonferrous metals such as zinc, lead and the like, and improves the purity of zinc powder. According to the utility model, the condensed waste gas is purified by the bag dust collector and then is introduced into the inert gas heating device for mixing, and then is introduced into the lower end of the fluidized bed furnace for bottom blowing, so that the efficient recycling of zinc-containing gas is realized, and the recovery efficiency of nonferrous metals is further improved.
Description
Technical Field
The utility model relates to the technical field of dust removal of metal smelting smoke dust and recovery of high-value metal, in particular to a dust collection and nonferrous metal recovery system of zinc-containing electric furnace smoke dust.
Background
Chinese patent CN113789421a discloses a comprehensive recovery system for continuously blowing electric furnace dust and its recovery method, mainly comprising an electric furnace system dust removing station, a dust removing bin, a first conveyor, a dryer, a second conveyor, a powder stirrer, a blowing device and an electric arc furnace which are sequentially arranged and communicated according to the dust removing flow direction, wherein the powder stirrer is also communicated with a reducing agent bin, an electric furnace dust collecting cover is communicated above the electric arc furnace, and the electric furnace dust collecting cover is communicated with the electric furnace system dust removing station to form a circulation system of the whole dust removing flow direction; the dedusting ash in the whole circulation system can be circularly treated until volatile metal elements such as lead, zinc and the like are reduced and oxidized, and then enter the electric furnace system dedusting station again and are enriched to a preset percentage; other oxides in the dedusting ash are also fused into the slag, so that the effective separation and recycling of valuable metals are realized.
The technical proposal disclosed in the patent is that iron oxide in the dust is reduced into molten iron in the reducing atmosphere and then enters into molten steel; the volatile metal elements such as lead, zinc and the like are reduced and oxidized and then enter the electric furnace system dust removing station again for enrichment; ca. The Mg and other elements can be used as a part of slag in the form of oxide, so that the consumption of slag entering the furnace is reduced; other oxides in the fly ash are also incorporated into the slag. According to the scheme, the metal yield in the electric furnace dust can be improved, and the influence of heavy metal elements on the environment is reduced. However, the system structure and the process are complex, the cooperative control requirement between relevant equipment of the whole electric furnace dedusting ash feeding comprehensive recovery system is high, and the recovery rate of high-value metals such as zinc, lead and the like is not ideal.
Disclosure of Invention
The utility model aims to provide a dust collection and nonferrous metal recovery system for zinc-containing electric furnace dust, which is mainly used for efficiently recovering and utilizing high-value nonferrous metals in electric furnace dust, reducing harm of heavy metal emission to the environment, realizing effective separation and recovery utilization of the high-value nonferrous metals, and improving the yield of zinc, lead and other nonferrous metals in the electric furnace dust.
The aim of the utility model is realized by adopting the following technical scheme:
the dust collection and nonferrous metal recovery system comprises a fluidized bed furnace, a cyclone dust collector, a condenser and a bag dust collector, wherein one side of the fluidized bed furnace is provided with a feed inlet, the upper end of the fluidized bed furnace is connected with the cyclone dust collector through a steam pipeline, and the lower end of the fluidized bed furnace is connected with an inert gas source through a pipeline;
the upper end of the cyclone dust collector is connected with a condenser through a pipeline, the condenser is connected with an air inlet of the cloth bag dust collector through a pipeline, an air outlet of the cloth bag dust collector is connected with a fan through an exhaust pipe, and the fan is connected with an exhaust chimney.
As a preferable technical scheme of the utility model, the inert gas source is connected with the heating device through a pipeline, and the heating device is connected with the lower end of the fluidized bed furnace through a pipeline.
As a preferable technical scheme of the utility model, the inert gas source is communicated with the air outlet of the bag dust collector through a pipeline.
As a preferable technical scheme of the utility model, the inert gas source is connected with the fan through a pipeline.
As the preferable technical scheme of the utility model, the lower end of the cyclone dust collector is communicated with the inner cavity of the fluidized bed furnace through a pipeline.
As a preferable technical scheme of the utility model, a discharge hole is arranged on the lower side surface of the fluidized bed furnace.
As the preferable technical scheme of the utility model, the recycling system further comprises a material lifting machine, wherein the upper end of the lifting machine is connected with a storage bin, and the lower end of the storage bin is connected with a feed inlet of the fluidized bed furnace.
As a preferable technical scheme of the utility model, the inert gas source comprises a compressed nitrogen cylinder or a nitrogen generator, the nitrogen source is connected with a first pipeline tee joint through a nitrogen pipe, one end of the first pipeline tee joint is communicated with a heating device, and the other end of the first pipeline tee joint is connected with a second pipeline tee joint through a pipeline; one end of the second pipeline tee joint is communicated with an air outlet of the bag dust collector, and the other end of the second pipeline tee joint is communicated with the fan and the exhaust chimney.
As a preferred embodiment of the present utility model, the nonferrous metal includes zinc and lead.
The beneficial effects of the utility model are as follows: compared with the prior art, the method and the device realize high-efficiency recovery and utilization of the high-value nonferrous metals in the electric furnace dust, reduce the harm of heavy metal emission to the environment, realize effective separation and recovery utilization of the high-value nonferrous metals, and improve the yield of the nonferrous metals such as zinc, lead and the like in the electric furnace dust.
The utility model processes zinc-containing electric furnace dust through a dust removal device to form electric furnace dust which enters a dust hopper, and then the electric furnace dust is sent into a storage bin through a conveying device; zinc is extracted by roasting in a fluidized bed furnace, and meanwhile, the discharged electric furnace dust is added with a binder, carbon powder and iron oxide scale to manufacture cold-bonded pellets, so that the recovery of high-value nonferrous metals is realized. According to the utility model, hot inert gas is introduced into the lower end of the fluidized bed furnace for bottom blowing, so that not only is the efficiency of extracting zinc, lead and other nonferrous metals from the electric furnace dust removed, but also the purity of zinc powder is improved.
The utility model purifies the condensed waste gas through the bag dust collector, then introduces the purified waste gas into the inert gas heating device for mixing, and then introduces the purified waste gas into the lower end of the fluidized bed furnace for bottom blowing, thereby realizing the efficient recycling of zinc-containing gas and further improving the recovery efficiency of nonferrous metals, and the recovery rate of zinc and lead is more than 90 percent.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1. the device comprises a lifting machine, 2, a storage bin, 3, a fluidized bed furnace, 4, a cyclone dust collector, 5, a condenser, 6, a cloth bag dust collector, 7, a chimney, 8, a discharge hole, 9, a heating device, 10 and a nitrogen pipe.
Detailed Description
The utility model is further described with reference to the drawings and the specific embodiments below:
as shown in figure 1, the zinc-containing electric furnace dust collection and nonferrous metal recovery system comprises a fluidized bed furnace 3, a cyclone dust collector 4, a condenser 5 and a bag dust collector 6, wherein one side of the fluidized bed furnace 3 is provided with a feed inlet, the upper end of the fluidized bed furnace 3 is connected with the cyclone dust collector 4 through a steam pipeline, and the lower end of the fluidized bed furnace 3 is connected with an inert gas source through a pipeline; the upper end of the cyclone dust collector 4 is connected with a condenser 5 through a pipeline, the condenser 5 is connected with an air inlet of a bag dust collector 6 through a pipeline, an air outlet of the bag dust collector 6 is connected with a fan through an exhaust pipe, and the fan is connected with an exhaust chimney 7.
In the embodiment, the inert gas source is connected with the heating device 9 through a pipeline, and the heating device 9 is connected with the lower end of the fluidized bed furnace 3 through a pipeline; the inert gas source is communicated with the air outlet of the bag dust collector 6 through a pipeline, and is connected with the fan and the exhaust chimney 7 through a pipeline. The lower end of the cyclone dust collector 4 is communicated with the inner cavity of the fluidized bed furnace 3 through a pipeline, and a discharge hole 8 is arranged on the lower side surface of the fluidized bed furnace 3.
The recycling system of the utility model also comprises a material lifting machine 1, wherein the upper end of the lifting machine 1 is connected with a feed bin 2, and the lower end of the feed bin 2 is connected with a feed inlet of a fluidized bed furnace 3. In the working process, zinc-containing electric furnace dust is processed by a dust remover to form electric furnace dust which enters an ash bucket, the electric furnace dust in the ash bucket is conveyed to a lifting machine 1 by an ash discharging device and a conveyor, and then the electric furnace dust is conveyed to a storage bin by the lifting machine 1.
The inert gas source comprises a compressed nitrogen bottle or a nitrogen generator, the nitrogen source is connected with a first pipeline tee joint through a nitrogen pipe 10, one end of the first pipeline tee joint is communicated with the heating device, and the other end of the first pipeline tee joint is connected with a second pipeline tee joint through a pipeline; one end of the second pipeline tee joint is communicated with an air outlet of the bag dust collector 6, and the other end of the second pipeline tee joint is communicated with a fan and an exhaust chimney 7.
The nonferrous metal comprises zinc and lead, and the recovery rate of the nonferrous metal for zinc and lead is more than 90%.
The above examples are only for illustrating the concept and technical features of the present utility model, and are intended to enable those skilled in the art to understand the technical scheme and embodiments of the present utility model, and thus, the scope of the present utility model is not limited thereto. All equivalent substitutions or equivalent changes according to the technical proposal of the utility model are covered in the protection scope of the utility model.
Claims (9)
1. A dust collection and nonferrous metal recovery system for zinc-containing electric furnace smoke dust comprises a fluidized bed furnace, a cyclone dust collector, a condenser and a cloth bag dust collector, and is characterized in that: a feed inlet is arranged at one side of the fluidized bed furnace, the upper end of the fluidized bed furnace is connected with the cyclone dust collector through a steam pipeline, and the lower end of the fluidized bed furnace is connected with an inert gas source through a pipeline;
the upper end of the cyclone dust collector is connected with a condenser through a pipeline, the condenser is connected with an air inlet of the cloth bag dust collector through a pipeline, an air outlet of the cloth bag dust collector is connected with a fan through an exhaust pipe, and the fan is connected with an exhaust chimney.
2. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to claim 1, wherein the zinc-containing electric furnace dust collection and nonferrous metal recovery system is characterized in that: the inert gas source is connected with the heating device through a pipeline, and the heating device is connected with the lower end of the fluidized bed furnace through a pipeline.
3. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to claim 2, wherein the zinc-containing electric furnace dust collection and nonferrous metal recovery system is characterized in that: the inert gas source is communicated with an air outlet of the bag dust collector through a pipeline.
4. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to claim 3, wherein the zinc-containing electric furnace dust collection and nonferrous metal recovery system is characterized in that: the inert gas source is connected with the fan through a pipeline.
5. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to claim 1, wherein the zinc-containing electric furnace dust collection and nonferrous metal recovery system is characterized in that: the lower end of the cyclone dust collector is communicated with the inner cavity of the fluidized bed furnace through a pipeline.
6. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to claim 5, wherein the zinc-containing electric furnace dust collection and nonferrous metal recovery system is characterized in that: the lower side of the fluidized bed furnace is provided with a discharge hole.
7. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to claim 1, wherein the zinc-containing electric furnace dust collection and nonferrous metal recovery system is characterized in that: the recovery system further comprises a material hoister, the upper end of the hoister is connected with a storage bin, and the lower end of the storage bin is connected with a feed inlet of the fluidized bed furnace.
8. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to any one of claims 1 to 4, wherein: the inert gas source comprises a compressed nitrogen bottle or a nitrogen generator, the nitrogen source is connected with a first pipeline tee joint through a nitrogen pipe, one end of the first pipeline tee joint is communicated with the heating device, and the other end of the first pipeline tee joint is connected with a second pipeline tee joint through a pipeline; one end of the second pipeline tee joint is communicated with an air outlet of the bag dust collector, and the other end of the second pipeline tee joint is communicated with the fan and the exhaust chimney.
9. The zinc-containing electric furnace dust collection and nonferrous metal recovery system according to claim 1, wherein the zinc-containing electric furnace dust collection and nonferrous metal recovery system is characterized in that: the nonferrous metals include zinc and lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223320614.7U CN219260141U (en) | 2022-12-11 | 2022-12-11 | Dust collection and nonferrous metal recovery system for zinc-containing electric furnace smoke dust |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223320614.7U CN219260141U (en) | 2022-12-11 | 2022-12-11 | Dust collection and nonferrous metal recovery system for zinc-containing electric furnace smoke dust |
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| CN219260141U true CN219260141U (en) | 2023-06-27 |
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| CN202223320614.7U Active CN219260141U (en) | 2022-12-11 | 2022-12-11 | Dust collection and nonferrous metal recovery system for zinc-containing electric furnace smoke dust |
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