CN215539486U - Matte grinds flue gas and gathers dust and matte powder conveying system - Google Patents
Matte grinds flue gas and gathers dust and matte powder conveying system Download PDFInfo
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- CN215539486U CN215539486U CN202120362462.3U CN202120362462U CN215539486U CN 215539486 U CN215539486 U CN 215539486U CN 202120362462 U CN202120362462 U CN 202120362462U CN 215539486 U CN215539486 U CN 215539486U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
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Abstract
The utility model provides a matte mill flue gas dust collection and matte powder conveying system, which comprises a matte mill, a dust settling cylinder, a primary bag type dust collector, a secondary bag type dust collector, a matte mill exhaust fan and an exhaust cylinder, wherein the dust settling cylinder is arranged on the matte mill; the ash settling cylinder, the primary bag type dust collector and the secondary bag type dust collector are respectively provided with a flue gas inlet, a flue gas outlet and a matte powder outlet, and the matte grinding exhaust fan is provided with a flue gas inlet and a flue gas outlet; the matte grinds with it links to each other to sink ash section of thick bamboo flue gas inlet, sink ash section of thick bamboo exhanst gas outlet with one-level bag collector flue gas inlet links to each other, one-level bag collector exhanst gas outlet with second grade bag collector flue gas inlet links to each other, second grade bag collector exhanst gas outlet with matte grinds exhaust fan flue gas inlet and links to each other, matte grinds exhaust fan exhanst gas outlet with the aiutage links to each other. The system provided by the utility model can enable the treated matte grinding flue gas to achieve ultralow-concentration emission and efficiently recover the matte powder.
Description
Technical Field
The utility model relates to the technical field of smelting, in particular to a fume dust collection and matte powder conveying system for a matte grinder.
Background
Copper matte with the copper content of 70 percent generated by reaction in a copper flash smelting furnace enters a copper matte air quenching device through a chute for granulation, the granulated copper matte with the water content of 4 to 6 percent enters a copper matte storage and then is sent into a copper matte grinding powder, and the copper matte is dried by adopting a hot air drying process. The wet copper matte is firstly dried and ground by a copper matte mill, and then is conveyed to a classifier at the top of the copper matte mill through hot flue gas, and finally the copper matte powder with the granularity of-200 meshes larger than 80% and the water content smaller than 0.2% is obtained. The dried copper matte powder is taken out by hot flue gas and conveyed to a bag type dust collector in a negative pressure conveying mode to realize separation of copper matte powder and flue gas, the copper matte powder enters a furnace top copper matte bin, the purified flue gas is divided into two parts after an exhaust fan, part of the flue gas is discharged into the atmosphere from an exhaust funnel, and part of the flue gas returns to a hot blast stove and enters a mill after mixed heating, so that the hot flue gas is recycled to reduce energy consumption of the copper matte mill.
The main pollutant components of the matte grinding dust comprise copper and compounds thereof, lead and compounds thereof, arsenic and compounds thereof, cadmium and compounds thereof, mercury and compounds thereof and fluoride. The matte dry flue gas of the existing copper smelting enterprises is directly discharged after being collected by a single bag type dust collector, and the influence on a main production system is large because the dust content in the original flue gas is high, the equipment load is large during operation, the operation working condition is severe, the damage is fast, the filter bag needs to be frequently stopped and replaced, and the single bag type dust collector can hardly ensure that the dust content in the tail gas reaches the limit value of the particulate matter discharge concentration of 10mg/Nm3The requirements of (1).
Disclosure of Invention
In order to solve the technical problem, the utility model provides a matte mill flue gas dust collection and matte powder conveying system, which comprises a matte mill, an ash deposition barrel, a primary bag type dust collector, a secondary bag type dust collector, a matte mill exhaust fan and an exhaust barrel;
the ash settling cylinder, the primary bag type dust collector and the secondary bag type dust collector are respectively provided with a flue gas inlet, a flue gas outlet and a matte powder outlet, and the matte grinding exhaust fan is provided with a flue gas inlet and a flue gas outlet;
the matte grinds with it links to each other to sink ash section of thick bamboo flue gas inlet, sink ash section of thick bamboo exhanst gas outlet with one-level bag collector flue gas inlet links to each other, one-level bag collector exhanst gas outlet with second grade bag collector flue gas inlet links to each other, second grade bag collector exhanst gas outlet with matte grinds exhaust fan flue gas inlet and links to each other, matte grinds exhaust fan exhanst gas outlet with the aiutage links to each other.
The device comprises a primary bag type dust collector, a secondary bag type dust collector, a primary dust collector embedded scraper conveyer and a secondary dust collector embedded scraper conveyer, wherein the primary dust collector embedded scraper conveyer is arranged at a matte powder outlet of the primary bag type dust collector, and the secondary dust collector embedded scraper conveyer is arranged at a matte powder outlet of the secondary bag type dust collector.
The system further comprises a screw conveyor, and the screw conveyor is arranged at the outlet of the matte powder of the ash deposition barrel.
The system further comprises a furnace top copper matte bin, and the furnace top copper matte bin is connected with the spiral conveyor and the primary dust remover buried scraper conveyor respectively.
The system further comprises a matte powder pneumatic conveying device, and the matte powder pneumatic conveying device is respectively connected with the ash deposition cylinder flue gas inlet and the secondary dust remover embedded scraper conveyor.
The system further comprises a hot blast stove, and the hot blast stove is connected with the matte mill exhaust fan smoke outlet and the matte mill respectively.
The utility model has the beneficial effects that:
compared with the prior art, the matte grinding flue gas dust collection and matte powder conveying system provided by the utility model can achieve the following purposes: in the current domestic double-flash copper smelting plant, most of the flue gas is treated by ash deposition and single-stage bag type dust collector, and the emission concentration of particulate matters is more than 10mg/Nm3The discharge standard of industrial pollutants of copper, nickel and cobalt cannot be implemented by colored industry enterprises (GB 25467-2010, 2013 year modification)Single), i.e., a particulate matter emission concentration limit of 10mg/Nm3And the environmental protection can not meet the requirement. Compared with the existing matte milling flue gas treatment system, the utility model can realize ultralow emission of the matte milling flue gas, and the concentration of particulate matters in the matte milling flue gas reaches 5mg/Nm3Hereinafter, it is also possible to efficiently recover the matte powder.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it should be obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a fume dust collection and matte powder conveying system for a matte grinding machine according to an embodiment of the present invention;
the names corresponding to the reference numbers in the drawings are as follows: 1-matte mill, 2-ash settling cylinder, 3-primary bag type dust collector, 4-secondary bag type dust collector, 5-matte mill exhaust fan, 6-exhaust cylinder, 7-hot blast stove, 8-screw conveyor, 9-primary dust collector embedded scraper conveyor, 10-secondary dust collector embedded scraper conveyor, 11-furnace top matte bin and 12-matte powder pneumatic conveying device.
Detailed Description
The following is a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements are also considered to be within the scope of the present invention.
The utility model provides a fume dust collection and matte powder conveying system for a matte mill, which comprises a matte mill 1, an ash deposition barrel 2, a primary bag type dust collector 3, a secondary bag type dust collector 4, a matte mill exhaust fan 5 and an exhaust barrel 6; the ash settling cylinder 2, the primary bag type dust collector 3 and the secondary bag type dust collector 4 are respectively provided with a flue gas inlet, a flue gas outlet and a matte powder outlet, and the matte grinding exhaust fan 5 is provided with a flue gas inlet and a flue gas outlet; matte grind 1 with it links to each other to sink 2 flue gas inlets of ash section of thick bamboo, sink 2 exhanst gas outlets of ash section of thick bamboo with 3 flue gas inlets of one-level bag collector link to each other, 3 exhanst gas outlets of one-level bag collector with 4 flue gas inlets of second grade bag collector link to each other, 4 exhanst gas outlets of second grade bag collector with matte grinds 5 flue gas inlets of exhaust fan and links to each other, matte grinds 5 exhanst gas outlets of exhaust fan with exhaust stack 6 links to each other. A primary dust collector embedded scraper conveyor 9 is arranged at a matte powder outlet of the primary bag type dust collector 3, and a secondary dust collector embedded scraper conveyor 10 is arranged at a matte powder outlet of the secondary bag type dust collector 4; the system also comprises a screw conveyor 8, wherein the screw conveyor 8 is arranged at the matte powder outlet of the ash deposition cylinder 2; the system also comprises a furnace top copper matte bin 11, wherein the furnace top copper matte bin 11 is respectively connected with the spiral conveyer 8 and the primary dust remover buried scraper conveyer 9; the system also comprises a matte powder pneumatic conveying device 12, wherein the matte powder pneumatic conveying device 12 is respectively connected with the flue gas inlet of the ash deposition cylinder 2 and the embedded scraper conveyor 10 of the secondary dust remover; the system further comprises a hot blast stove 7, and the hot blast stove 7 is respectively connected with the fume outlet of the matte grinding exhaust fan 5 and the matte grinding machine 1.
The method for collecting dust and conveying the matte powder to the fume of the matte mill by adopting the system provided by the utility model comprises the following steps:
hot flue gas containing the copper matte powder is discharged from an outlet of a copper matte mill 1, enters a primary bag type dust collector 3 and a secondary bag type dust collector 4 in sequence after being subjected to coarse dust collection through an ash deposition barrel 2 and fine dust collection, is partially discharged through an exhaust funnel 6 through an exhaust fan 5 of the copper matte mill, and is partially returned to the copper matte mill 1 through a hot blast stove 7;
the matte powder collected by the ash settling barrel 2 is conveyed into a furnace top matte bin 11 through a screw conveyor 8, the matte powder collected by the primary bag type dust collector 3 is conveyed into the furnace top matte bin 11 through a primary dust collector embedded scraper conveyor 9, and the matte powder collected by the secondary bag type dust collector 4 enters a matte powder pneumatic conveying device 12 through a secondary dust collector embedded scraper conveyor 10 and is conveyed into an outlet pipe of the matte mill 1.
The system provided by the utility model can ensure that the concentration of particulate matters in the treated matte grinding flue gas is 5mg/Nm3The method achieves the aim that the colored industry enterprises execute the discharge standard of industrial pollutants of copper, nickel and cobalt (GB 25467-2010, 2013 correction order), namely the limit value of the discharge concentration of the particulate matters is 10mg/Nm3The matte powder can be efficiently recycled according to the emission standard.
The above examples merely represent specific embodiments of the present invention, which are described in more detail and detail, but are not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, various changes and modifications can be made without departing from the spirit of the present invention, and these changes and modifications are all within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (6)
1. The utility model provides a copper matte grinds flue gas and gathers dust and copper matte powder conveying system which characterized in that: the system comprises a matte mill (1), an ash settling barrel (2), a primary bag type dust collector (3), a secondary bag type dust collector (4), a matte mill exhaust fan (5) and an exhaust barrel (6);
the ash settling cylinder (2), the primary bag type dust collector (3) and the secondary bag type dust collector (4) are respectively provided with a flue gas inlet, a flue gas outlet and a matte powder outlet, and the matte grinding exhaust fan (5) is provided with a flue gas inlet and a flue gas outlet;
matte grinds (1) with it links to each other to sink ash section of thick bamboo (2) flue gas inlet, sink ash section of thick bamboo (2) exhanst gas outlet with one-level bag collector (3) exhanst gas inlet links to each other, one-level bag collector (3) exhanst gas outlet with second grade bag collector (4) exhanst gas inlet links to each other, second grade bag collector (4) exhanst gas outlet with matte grinds exhaust fan (5) exhanst gas inlet and links to each other, matte grinds exhaust fan (5) exhanst gas outlet with exhaust stack (6) link to each other.
2. The copper matte mill flue gas dust collection and copper matte powder conveying system according to claim 1, characterized in that: a primary dust collector embedded scraper conveyor (9) is arranged at the matte powder outlet of the primary bag type dust collector (3), and a secondary dust collector embedded scraper conveyor (10) is arranged at the matte powder outlet of the secondary bag type dust collector (4).
3. The copper matte mill flue gas dust collection and copper matte powder conveying system according to claim 2, characterized in that: the system further comprises a screw conveyor (8), and the screw conveyor (8) is arranged at the matte powder outlet of the ash deposition cylinder (2).
4. The copper matte mill flue gas dust collection and copper matte powder conveying system according to claim 3, characterized in that: the system further comprises a furnace top copper matte bin (11), wherein the furnace top copper matte bin (11) is respectively connected with the spiral conveyer (8) and the primary dust remover buried scraper conveyer (9).
5. The copper matte mill flue gas dust collection and copper matte powder conveying system according to claim 2, characterized in that: the system further comprises a copper matte powder pneumatic conveying device (12), and the copper matte powder pneumatic conveying device (12) is respectively connected with the smoke inlet of the ash deposition cylinder (2) and the embedded scraper conveyor (10) of the secondary dust remover.
6. The copper matte grinding flue gas dust collection and copper matte powder conveying system according to any one of claims 1-5, wherein: the system further comprises a hot blast stove (7), and the hot blast stove (7) is connected with a fume outlet of the matte grinding exhaust fan (5) and the matte grinding mill (1) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120362462.3U CN215539486U (en) | 2021-02-07 | 2021-02-07 | Matte grinds flue gas and gathers dust and matte powder conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120362462.3U CN215539486U (en) | 2021-02-07 | 2021-02-07 | Matte grinds flue gas and gathers dust and matte powder conveying system |
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| Publication Number | Publication Date |
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| CN215539486U true CN215539486U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120362462.3U Active CN215539486U (en) | 2021-02-07 | 2021-02-07 | Matte grinds flue gas and gathers dust and matte powder conveying system |
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| Country | Link |
|---|---|
| CN (1) | CN215539486U (en) |
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2021
- 2021-02-07 CN CN202120362462.3U patent/CN215539486U/en active Active
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