A SYSTEM AND METHOD FOR SEPARating FINE METAL PARTICLES FROM THE TOP GAS OF A METALLURGICAL FURNACE, AND A METALLURGICAL FURNACE FOR PRODUCING PIG IRON AND SEPARATING FINE METAL PARTICLES.

Abstract

The present invention relates to a system for separating fine metal particles from the top gas of a metallurgical furnace (20): comprising at least one gas conveyor pipe (10) adapted to carry the top gas out of the metallurgical furnace (20); at least one coarse particle separator (11) to separate coarse particles from the top gas; at least one primary collection tank (12) connected downstream of at least one coarse particle separator (11); at least one fine particle separator (13) to separate fine metal particles from the top gas; and at least one secondary collection tank (14) connected downstream of at least one fine particle separator (13), which is configured to receive a slurry containing fine metal particles separated from the top gas, where a downstream connection is formed between at least one gas conveyor pipe (10), the metallurgical furnace (20), at least one coarse particle separator (11) and at least one fine particle separator (13).The invention also relates to a method for separating fine metal particles from the top gas of a metallurgical furnace (20) as well as a metallurgical furnace (20) for producing pig iron and separating fine metal particles.

Description

It is related to a system and method. This is especially true; It is related to. metal If that happens, this it could be. promise inclusion Materials / by-products containing zinc in the form of zinkite (ZnO) and / or franklinite (ZnFe2O4). zinc from products NRA a dust collector in, OBJECTIVES The goal is to find a solution to the technical problem. China at least one rough there is at least one gas here nutritious; at least one of these is in question here. It is fed by agglomerate. It is possible. It is. DESCRIPTION OF PART REFERENCES 1. 2. 3. First blower pipe 4. 5. 10. 15. Dehumidifier 20. Metallurgical S4: Clean gas a nude (11), at least to It is known. z is a second It has a base. (14) base remaining, which means that the upper gas preferably has at least one dehumidifier (15) or a burner. Preferably, the existing b It contains desiccant (15). less than a second evacuation total cow being, b includes the injection Preference i (15) are being evacuated. par meta- first blowing pipe (3) and second blowing pipe (4) metallurgical in at least one of them first blowpipe (3), second blowpipe (4); and word metallurgic It is nourished. first blower pipe (3) and second blower pipe ( The blowing tube (4) comprises a set, preferably with holes. The injected air 2 a crossbar, preferably circular or rectangular, with a suitable diameter or dimensions O2 In addition, the first blow ezi pipe and It contains. central pipe It burns. blown from within It brings. 102013033702- should be done. (S1) (S2), ok (S4), for dehumidification (14) are evacuated. tt t tt t t, one or more basic oxygen steel production powders, tt This method provides the minimum amount of flour for pig iron production. It is reduced to produce pig iron. first blowing pipe (3), second blowing pipe pipe ( Wae r is the required zinc concentration of the feed material. productive .

Claims

1. being, -top - - - And - It is characterized by... It is the second system, It is characterized by... It is the 3rd system, It is characterized by... It is the 4th system, It is characterized by...

5. system and at least one dehumidifier (15) of each, the remaining It is characterized by... It is the 6th system, and at least one second with It is characterized. It is the 7th system, It is characterized by... It is the 8th system and is internally a refractory material. covered with material It is characterized by... System 9 It is characterized by...

10. being, - - - - It is characterized by... This is the 11th method, and at least one... It is characterized by... This is the 12th method, It is characterized by... This is the 13th method, and it requires at least one dehumidifier. of It is characterized by... This is the 14th method, involving at least one second summation. It is characterized by... This is the 15th method, involving at least one second summation. with It is characterized.

16. (20) and : first blowing pipe (3), second blowpipe (4) metallurgical first blower pipe (3), second blower pipe ( by doing so; with lomerate nutrition; and It is characterized by...

17. (20) and It is characterized by...

18. metallurgy (20) It is characterized by...

19. (20) olup, ile karakterize edilir.

20. olup, ile karakterize edilir. 18 / 23 CLAIMS 1. System for separating fine metallic particles from a top gas of a steelmaking furnace (20), characterized in that It includes: at least one gas transport channel (10) configured to transport the top gas out of the steelmaking furnace (20); at least one particle separating element gross (11) for separating coarse particles from the top gas; at least one first collection tank (12) coupled to downstream of at least one coarse particle separating element (11); at least one fine particle separating element (13) for separating fine metallic particles from the overhead gas; and at least one second collection tank (14) coupled to downstream of at least one fine particle separating element (13), where at least one second collection tank (14) is configured to receive a mud comprising fine metallic particles separated from the overhead gas; in which at least one gas transport channel (10) connects downstream the steelmaking furnace (20), or at least one separating element of coarse particles (11) and at least one separating element of fine particles (13).

2. System according to claim 1, characterized due to the fact that at least one element separates coarse particles (11) consists of a cyclone.

3. System according to claim 1 or 2, characterized by the fact that at least one separating element of fine particles (13) consists of a venturi scrubber.

4. System according to any one of the claims 1 3, characterized by the fact that it also includes at least one dehumidifier demister (15) to dehumidify the remaining top gas, 19 / 23 wherein the dehumidifier demister (15) is connected downstream of at least a second collection tank (14).

5. System according to claim 4, characterized because each of them has at least one dehumidifier (15) It comprises a metallic mesh to intercept liquid droplets. comprising remaining fine metallic particles.

6. System according to any one of the claims 1 5, characterized by the fact that at least one second collection tank (14) comprises at least one mud drain (17) and at least one channel water insertion (16).

7. System according to any one of the claims 1 6, characterized by the fact that at least one second collection tank (14) has a prismatic and inclined bottom.

8. System, according to any one of the claims 4 7, characterized by the fact that at least one gas transport channel (10), or at least one particle separating element (11), or by less a fine particle separating element (13) and at least one dehumidifier demister (15) are internally lined with a material refractory.

9. System according to any one of the claims 1 8, characterized by the fact that the fine metallic particles are particles Made of zinc.

10. Method for separating metallic particles find a top gas of a steelmaking furnace (20), characterized in that It includes: transporting the top gas out of the steelmaking furnace (20) through at least one gas transport pipeline (10); to separate coarse particles from the top gas through less one coarse particle separating element (11); / 23 collect the coarse particles deposited in at least one first collection tank (12) coupled downstream of at least one element coarse particle separator (11), separating fine metallic particles from the top gas by means of at least one fine particle separating element (13); and collect a sludge comprising fine metallic particles separated from the top gas in at least a second collection tank (14), coupled downstream of at least one fine particle separator element (13).

11. Method according to claim 10, characterized because separating coarse particles from the top gas through less a coarse particle separating element (11) comprises using rotational and gravitational effects for the separation of coarse particles, in which at least one particle separator element (11) It consists of a cyclone.

12. Method according to claim 10 or 11, characterized by the fact that separating fine metallic particles from the gas top through at least one fine particle separating element (13) includes injecting a washing liquid into at least one element fine particle separator (13), in which at least one separating element fine particle scrubber (13) consists of a venturi scrubber.

13. Method, according to any one of the claims 10 12, characterized by the fact that it also includes: intercept liquid droplets comprising the particles fine metallic residues remaining in the overhead gas through a metallic mesh of at least one demister dehumidifier (15), wherein the at least one dehumidifier demister (15) is connected downstream of at least one second collection tank (14). 21 / 23 14. Method, according to any one of the claims 10 a 13, characterized by the fact that collecting a laa comprising the fine metallic particles separated from the overhead gas in at least one second collection tank (14) comprises collecting the fine metallic particles through from a mud drain (17) of at least one second collection tank (14), in that the fine metallic particles are zinc particles.

15. Method, according to any one of the claims 10 a 13, characterized by the fact that collecting a laa comprising the fine metallic particles separated from the overhead gas in at least one second collection tank (14) comprises collecting the mud through an upper opening of at least one second collection tank (14), in which the metallic particles Fine particles are zinc particles.

16. Iron and steel furnace (20) for the manufacture of pig iron and separation of fine metallic particles, characterized by the fact that It includes: at least one top bowl (1); at least one bowl lower (2); at least one fuel feeder positioned between the at least one upper tank (1) and at least one lower tank (2); and by at least one row of tuyeres (3, 4) positioned in at least one of at least one upper bowl (1) and at least one lower bowl (2), at least a row of tuyeres (3, 4) communicating fluidly the interior of oven (20) with the outside environment; and at least one burner positioned in at least one of at least one upper bowl (1) and at least one lower tub (2); in which the steelmaking furnace (20) is fed with a plurality of solid agglomerates comprising fine metallic particles; and a system for separating fine metallic particles from a 22 / 23 top gas of the steelmaking furnace (20), as defined in claim 1, connected to a gas outlet of the steelmaking furnace (20) to separate the fine metallic particles originating from solid agglomerates and which are byproduct of pig iron production in the steelmaking furnace (20).

17. Steelmaking furnace (20), according to claim 16, characterized by the fact that the plurality of solid clusters comprising fine metallic particles consists of a plurality of solid agglomerates comprising electric arc furnace dust, wherein the A plurality of solid agglomerates are a plurality of briquettes, and in which The fine metallic particles are zinc particles.

18. Steelmaking furnace (20), according to claim 16, characterized by the fact that the plurality of solid clusters comprising fine metallic particles consists of a plurality of solid agglomerates comprising one or more of the following: steelmaking powder oxygen, willemite residues, steelmaking by-products comprising zinc, or processed scrap comprising zinc.

19. Iron and steel furnace (20), according to any of the claims 16 to 18, characterized by the fact that the top temperature of steelmaking furnace (20) is between 600 °C and 700 °C.

20. Iron and steel furnace, according to any of the claims 16 to 19, characterized by the fact that it is powered by a metallic charge comprising self-reducing briquettes, wherein the percentage Metallic byproduct is composed of any steelmaking byproduct that meets the required levels. Minimum iron content required for the production of pig iron.

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