CN101191156B - Slag discharging method and device for metal vacuum smelting reduction furnace - Google Patents

Slag discharging method and device for metal vacuum smelting reduction furnace Download PDF

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Publication number
CN101191156B
CN101191156B CN2006102011307A CN200610201130A CN101191156B CN 101191156 B CN101191156 B CN 101191156B CN 2006102011307 A CN2006102011307 A CN 2006102011307A CN 200610201130 A CN200610201130 A CN 200610201130A CN 101191156 B CN101191156 B CN 101191156B
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China
Prior art keywords
slag
reduction
dw
provided
reduction furnace
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CN2006102011307A
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Chinese (zh)
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CN101191156A (en
Inventor
张继强
黄贵明
唐晓风
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贵州世纪天元矿业有限公司
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Abstract

The invention discloses a deslagging method for a metal vacuum smelting reducing furnace, wherein, a slag notch and a deslagging end cover are arranged on one end of a reducing pot; a charging hole is arranged on the other end of the reducing pot; an air pipe is arranged on a charging hole end; the air pipe is respectively connected with a vacuum pump and an air compressor after embranchment. During the delagging process, a vacuum valve is closed at first; the deslagging end cover of the reducing pot is opened, and then a compressed-air valve is opened; compressed air forms pressure on the charging hole end, and reducing waste residues are pushed out of the slag notch of the reducing pot. The invention has the advantages of capability of realizing semi-automatic production operation, no need for manual deslagging during the deslagging process, prevention of polluting the working environment and burning people due to high temperature, great improvement of deslagging efficiency, reduction of energy waste, capability of improving economic benefit of enterprises, and improvement of working conditions and labor intensity of workers.

Description

The Slagoff method of metal vacuum smelting reduction furnace and device

Technical field

The present invention relates to a kind of Slagoff method and device of metal vacuum smelting reduction furnace, belong to the deslagging field of metal vacuum smelting.

Background technology

We know, smelt in the production in the metal vacuum reduction method, need to send into through the reduction material that the batching suppression process is produced and carry out the high temperature reduction reaction in the reduction jar, according to the difference of reductive agent, the general requirement reduction reaction temperature is between 1000~1300 ℃.Metal vacuum smelting reduction furnace generally partly is made up of the tubular tank body of splendid attire reaction mass, metal collectors, watercooling jacket, vacuum suction device etc.Through the metal vapors that reduction reaction produces, can on the metal collectors of reduction jar cooling segment, crystallization separate out, the remaining a large amount of slag of reduction jar internal reaction needs to discharge in time, and fills virgin material and proceed to produce.How to discharge slag efficiently and safely, very important concerning each smelting enterprise.The discharge of existing vacuum non-ferrous metal smelting furnace slag, for example, the discharge of the reduction furnace for smelting slag of magnesium metal, basically still adopt the artificial method to slag tap, after Metal smelting is finished, open vacuum (-tight) housing, take out the metallic crystal device, with the instrument that is similar to rake slag is drawn out then.This method has many shortcomings, and the firstth, speed is slow, and the secondth, high bake, operational condition is abominable, and is dangerous.In addition, directly slag is come on the ground, can produce a large amount of dusts, cause the pollution of environment, work under bad environment.And existing method is slagged tap and removing slag all relatively wastes time, and influences production efficiency, also wastes energy, and influences whole economic benefit of enterprises.

Summary of the invention

The objective of the invention is to, a kind of Slagoff method and device of metal vacuum smelting reduction furnace is provided.The production operation that realizes semi-automation during deslagging, need not manually be drawn slag, prevented from the pollution of Working environment and the high temperature people that burns has been improved deslagging efficient greatly, reduced the waste of the energy, economic benefit of enterprises be can improve, and workman's working conditions and labour intensity improved.

Technical scheme of the present invention: a kind of Slagoff method of metal vacuum smelting reduction furnace is characterized in that: the end at reduction furnace reduction jar is provided with slag-drip opening and deslagging end cap, and the other end is provided with charging bole; At the charging bole end tracheae is set, connect vacuum pump and gas-holder through valve respectively after the tracheae branch, during deslagging, close vacuum valve earlier, the deslagging end cap of reduction jar is opened, open the pressurized air valve again, pressurized air forms pressure at the charging bole end of reduction jar, will the reduction waste residue releases from the slag-drip opening of reduction jar.

In the Slagoff method of above-mentioned metal vacuum smelting reduction furnace,, on the back wall of reduction furnace slag-drip opening end, be provided with dw for burn people and polluting of the waste residue that prevents to discharge; Be provided with actuating doors with the slag-drip opening corresponding position on the dw, to be easy to open or to close the deslagging end cap; The top of dw is provided with extractor fan, and dust and hot gas are extracted out; The below of dw is provided with the ash pit that is lower than reduction furnace ground, collects the waste residue and the discharge in time of discharging.

The slag discharging device of the metal vacuum smelting reduction furnace that makes up according to the Slagoff method of aforesaid metal vacuum smelting reduction furnace, comprise reduction furnace 1 and be placed on one or more reduction jars 12 in the reduction furnace 1 by ranks, reduction jar 12 1 ends are provided with charging bole 13, and the other end is provided with slag-drip opening 2 and deslagging end cap; The charging bole 13 of reduction jar upwards, the slag-drip opening 2 downward-sloping front walls of reduction furnace 1 that are placed on are with afterwards between the wall; The middle part of reduction jar is arranged in the furnace chamber of reduction furnace 1, outside front wall that the charging bole 13 of reduction jar and slag-drip opening 2 are in reduction furnace respectively or the back wall; The charging bole end of reduction jar connects extraction pipe 14, and the other end of extraction pipe is branched off into two tracheaes, and a tracheae connects vacuum pumps through vacuum valve 15, and the compressed air valve 16 of another tracheae connects pneumatic plants.

In the slag discharging device of above-mentioned metal vacuum smelting reduction furnace, the back wall of reduction jar 12 slag-drip opening ends is provided with slag notch with all reduction jar and covers on wherein dw 3; Be provided with actuating doors 5 with slag-drip opening 2 corresponding positions on the dw; The top of dw 3 is provided with extractor fan; The below of dw 3 is provided with the ash pit 9 that is lower than reduction furnace ground.

In the slag discharging device of aforesaid metal vacuum smelting reduction furnace, be provided with vertical partition plate 19 in the described dw 3, with the reduction jar the slag-drip opening apportion separate; The lower end of dw 3 is provided with grid 17; Be respectively equipped with the horizontal baffle 18 that to extract out or to insert on the dw of grid 17 tops of each row slag-drip opening 2 below.

In the slag discharging device of aforesaid metal vacuum smelting reduction furnace, described extractor fan comprises draught hood 6, bridge piece 7 and induced exhaust 8, draught hood 6 lower ends connect dw 3, and draught hood 6 upper ends connect induced exhaust 8 through bridge piece 7, and the terminal of induced exhaust 8 connects exhaust blower.

In the slag discharging device of aforesaid metal vacuum smelting reduction furnace, described ash pit 9 is long and narrow deep trouths of leaving on the ground; Each reduction furnace is provided with 1-5 ash pit; The degree of depth of groove is not overflowed with waste residue and is advisable, and the length of groove is equal to or greater than the length of dw 3, and the width of groove forms a narrow slit 4 greater than the width of dw 3 on the ground between ash pit 9 and the dw 3; To centre or lopsidedness shape, lower-most point was provided with cinder notch 11 in the bottom of groove around the bottom of groove was, and each cinder notch 11 that falls all is connected with cold slag machine 10.

Compared with prior art, the present invention utilizes compressed-air actuated pressure, waste residue is released automatically from slag-drip opening, changed original dependence workman manually draws slag from slag-drip opening working method, alleviated working strength of workers greatly, also accelerated the speed of slagging tap, reduced the waste of the energy, for economic benefit has improved in enterprise.In addition owing to be provided with dw at slag-drip opening, to the pollution of environment, burn accidentally people's the accident of high bake that the high temperature waste residue causes personnel or high temperature that also prevented takes place, and has improved workman's working conditions when having reduced deslagging.The present invention also has characteristics easy and safe to operate.That has realized smelting enterprise semi-automaticly goes out slag operation.

Description of drawings

Accompanying drawing 1 is a structural representation of the present invention;

Accompanying drawing 2 is partial enlarged drawings of accompanying drawing 1;

Accompanying drawing 3 is three-dimensional views of reduction furnace front wall direction among the present invention;

Accompanying drawing 4 is partial enlarged drawings of accompanying drawing 3;

Accompanying drawing 5 is front views of the present invention:

Accompanying drawing 6 is partial views of accompanying drawing 5;

Accompanying drawing 7 is side direction views of the present invention;

Accompanying drawing 8 is workflow diagrams of the present invention;

Sign flag in the accompanying drawing is: 1-reduction furnace, 2-slag-drip opening, 3-dw, 4-narrow slit, the 5-actuating doors, 6-draught hood, 7-bridge piece, the 8-induced exhaust, 9-ash pit, the cold slag machine of 10-, the 11-cinder notch that falls, 12-reduce jar, the 13-charging bole, the 14-tracheae, 15-vacuum valve, 16-pressurized air valve, the 17-grid, 18-horizontal baffle, 19-vertical partition plate.

Embodiment

Embodiment.A kind of Slagoff method of metal vacuum smelting reduction furnace, as shown in Figure 2, the reduction jar an end slag-drip opening 2 is set, slag-drip opening 2 is provided with deslagging end cap (the deslagging end cap does not draw among Fig. 2).As shown in Figure 4, a reduction jar the other end is provided with charging bole 13; Be provided with tracheae 14 at charging bole 13 ends, tracheae 14 is branched off into two tracheaes, a tracheae connects vacuum pump (vacuum pump does not draw among Fig. 4) through vacuum valve 15, the compressed air door 16 of another root tracheae connects pneumatic plant (pneumatic plant does not draw among Fig. 4), during deslagging, as Fig. 2 and shown in Figure 4, close vacuum valve 15 earlier, deslagging end cap on the reduction jar slag-drip opening 2 is opened, open pressurized air valve 16 again, pressurized air forms pressure at the charging bole end of reduction jar, will the reduction waste residue releases from the slag-drip opening 2 of reduction jar.For burn people and polluting of the waste residue that prevents to discharge, on the back wall of reduction jar slag-drip opening 2 one ends, be provided with dw 3, dw 3 forms an airtight relatively structure, the slag of discharging is closed, to reduce being scattered and polluting of slag dust.As Fig. 1, Fig. 2, Fig. 5, Fig. 6 and shown in Figure 7; The front of dw 3, corresponding to the slag notch 2 of each reduction jar, be provided with a fan actuating doors 5 (it is clearer that actuating doors 5 is represented) in Fig. 1 and Fig. 2, open corresponding actuating doors 5 before the deslagging earlier, open the deslagging end cap simultaneously, and then closeall actuating doors 5; Restart the deslagging operation, after deslagging finishes, open all actuating doors 5, the deslagging end cap is closed, the shutoff operation door 5 again, and ready for the reduction material of packing into new, it is for when opening same column reduction jar deslagging end cap one by one that corresponding different reduction jar is provided with independent actuating doors, only open a door, the bright people of the hot gas that can avoid other reduction jar of opening the deslagging end cap to appear like this at every turn.As Fig. 1, Fig. 5, Fig. 6, shown in Figure 7, the top of dw is provided with extractor fan, can timely dust in the dw 3 and scorching hot gas be extracted out, is convenient to the workman and carries out production operation; The below of dw 3 is provided with the ash pit 9 that is lower than reduction furnace ground, and the waste residue from the slag-drip opening 2 of reduction jar 12 is discharged directly drops in the ash pit 9.As Fig. 1, Fig. 3, Fig. 5, Fig. 6 and shown in Figure 7, ash pit 9 is the long and narrow deep trouths that dig out on the ground; Each reduction furnace arrangement has 1-5 the slag chute that falls; The degree of depth of groove is not overflowed with waste residue and is advisable, and prevents that the waste residue accumulation from exceeding ground; The length of groove is equal to or greater than the length of dw 3, to guarantee can all dropping into the ash pit 9 from the waste residue that reduction jar slag-drip opening is discharged; The width of groove is greater than the width of dw 3, make and form a narrow slit 4 on the ground between ash pit 9 and the dw 3, be convenient to send into ash pit 9, or observe and handle situation in the slag chute by this groove by will be in the tapping process accidental waste residue that fall into dw 3 outsides of narrow slit 4; This narrow slit 4 can cover with the cover plate that steel plate or other heat-stable material are made when not using; Around being, the bottom of groove tilts with certain angle to middle or a side, its angle can flow smoothly with waste residue and be advisable, lower-most point is provided with cinder notch 11 in the bottom of groove, the below of each cinder notch 11 that falls all is connected with cold slag machine 10, be sent to transmitting device through overcooled waste residue by cold slag machine 10 outlets and discharge, cold slag machine 10 can use off-the-shelf equipment of the prior art.

The slag discharging device of the metal vacuum smelting reduction furnace that makes up according to the Slagoff method of preceding described metal vacuum smelting reduction furnace, as shown in figures 1 and 3, comprise reduction furnace 1 and be placed in the reduction furnace 1 one or more reduction jars 12 by multiple lines and multiple rows, reduction jar 12 1 ends are provided with charging bole 13, and the other end is provided with slag-drip opening 2 and deslagging end cap (the deslagging end cap does not draw in the drawings); The charging bole 13 of reduction jar upwards, the slag-drip opening 2 downward-sloping front walls of reduction furnace 1 that are placed on are with afterwards between the wall; The middle part of reduction jar is arranged in the furnace chamber of reduction furnace 1, outside front wall that the charging bole 13 of reduction jar and slag-drip opening 2 are in reduction furnace respectively or the back wall; The charging bole end of reduction jar connects tracheae 14, the other end of tracheae 14 is branched off into two tracheaes, a tracheae connects vacuum pump (vacuum pump does not draw in the drawings) through vacuum valve 15, and the compressed air door 16 of another tracheae connects pneumatic plant (pneumatic plant does not draw in the drawings).The back wall of reduction jar slag-drip opening 2 ends is provided with slag notch with all reduction jar and covers on wherein dw 3; All be provided with actuating doors 5 with each reduction jar slag-drip opening 2 corresponding positions on the dw; The top of dw 3 is provided with extractor fan; The below of dw 3 is provided with the ash pit 9 that is lower than reduction furnace ground.Be provided with vertical partition plate 19 in the above-described dw 3, slag-drip opening 2 apportions that vertical partition plate 19 will reduce jar separate; When preventing to operate row be listed as between influencing each other, be provided with grid 17 between the lower end of dw 3 and the ash pit 9, personnel or other article fall into ash pit 9 accidentally when preventing to operate; All be provided with the horizontal baffle 18 that can extract out or insert on the dw of grid 17 tops of each row reduction jar slag-drip opening 2 below, horizontal baffle 18 can advance or pull out thus; Pull out horizontal baffle during deslagging, after deslagging is finished, push horizontal baffle 18 inward, avoid hot gas ascension influence to close the operation of reduction jar deslagging end cap.Aforesaid extractor fan comprises draught hood 6, bridge piece 7 and induced exhaust 8, and draught hood 6 can be provided with one above per 37 row reduction jars, also can on the whole dw 3 draught hood 7 be set.Draught hood 6 lower ends connect dw 3, and draught hood 6 upper ends connect induced exhaust 8 through bridge piece 7, and bridge piece 7 bends towards the flow direction of air, to reduce the resistance of pump drainage.The terminal of induced exhaust 8 connects exhaust blower.

Fig. 8 is a workflow diagram of the present invention, working process of the present invention is such: when the reduction material in the reduction jar carries out reduction reaction, the metal that restores is derived from the reduction jar by metal collection unit, after reduction finishes, waste residue after the reduction should be cleared from reduction jar, reload new reduction material and carry out next time restoring operation.

Its operation steps is as follows:

1, at this moment closes the vacuum valve 15 that is connected with vacuum pump on the reduction jar 12, and the horizontal baffles 18 below the dw 3 are extracted out.

2, an opening operation door 5 and a reduction jar deslagging end cap one by one from lower to upper, order from lower to upper is after preventing to open reduction jar deslagging end cap, the waste residue in the reduction jars 12 drops out scalds the people.

3, closeall actuating doors 5.

4, open pressurized air valve 16, the operation of beginning deslagging, the waste residue of discharge falls into ash pit 9 automatically.

5, after deslagging finishes, close all horizontal baffles 18, purpose is in order to prevent that the hot gas in the ash pit 9 from rising, the influence operation.

6, opening operation door 5 is one by one from top to bottom closed a reduction jar deslagging end cap, and basipetal order is to prevent to open in the top reduction jar residual waste residue to drop out and scald the people.

7, in the reduction jar, add new reduction material again, enter next round-robin production operation.

Claims (7)

1. the slag discharging device of metal vacuum smelting reduction furnace, it is characterized in that: this device comprises reduction furnace (1) and is placed on the more than one reduction jar (12) of (1) in the reduction furnace by ranks, reduction jar (12) one ends are provided with charging bole (13), and the other end is provided with slag-drip opening (2) and deslagging end cap; The charging bole (13) of reduction jar upwards, the downward-sloping front wall of reduction furnace (1) that is placed on of slag-drip opening (2) is with afterwards between the wall; The middle part of reduction jar is arranged in the furnace chamber of reduction furnace (1), outside front wall that the charging bole (13) of reduction jar and slag-drip opening (2) are in reduction furnace respectively or the back wall; The charging bole end of reduction jar connects extraction pipe (14), and the other end of extraction pipe is branched off into two tracheaes, and a tracheae connects vacuum pump through vacuum valve (15), and the compressed air valve of another tracheae (16) connects pneumatic plant.
2. the slag discharging device of metal vacuum smelting reduction furnace according to claim 1 is characterized in that: the back wall of reduction jar (12) slag-drip opening end is provided with slag notch with all reduction jar and covers on wherein dw (3); Be provided with actuating doors (5) with slag-drip opening (2) corresponding position on the dw; The top of dw (3) is provided with extractor fan; The below of dw (3) is provided with the ash pit (9) that is lower than reduction furnace ground.
3. the slag discharging device of metal vacuum smelting reduction furnace according to claim 2 is characterized in that: be provided with vertical partition plate (19) in the described dw (3), the slag-drip opening apportion of reduction jar is separated; The lower end of dw (3) is provided with grid (17); Be respectively equipped with the horizontal baffle (18) that to extract out or to insert on the dw of grid (17) top of each row slag-drip opening (2) below.
4. the slag discharging device of metal vacuum smelting reduction furnace according to claim 3, it is characterized in that: described extractor fan comprises draught hood (6), bridge piece (7) and induced exhaust (8), draught hood (6) lower end connects dw (3), draught hood (6) upper end connects induced exhaust (8) through bridge piece (7), and the terminal of induced exhaust (8) connects exhaust blower.
5. the slag discharging device of metal vacuum smelting reduction furnace according to claim 4, it is characterized in that: described ash pit (9) is the long and narrow deep trouth of leaving on the ground; Each reduction furnace is provided with 1-5 ash pit; The degree of depth of groove is not overflowed with waste residue and is advisable, and the length of groove is equal to or greater than the length of dw (3), and the width of groove forms a narrow slit (4) greater than the width of dw (3) on the ground between ash pit (9) and the dw (3); To centre or lopsidedness shape, be provided with cinder notch (11) in the bottom of groove lower-most point around the bottom of groove is, each cinder notch that falls (11) all is connected with cold slag machine (10).
6. adopt the Slagoff method of the slag discharging device of the described metal vacuum smelting reduction furnace of the arbitrary claim of claim 1 to 5, it is characterized in that: the end at reduction furnace reduction jar is provided with slag-drip opening and deslagging end cap, and the other end is provided with charging bole; At the charging bole end tracheae is set, connect vacuum pump and compressed air reservoir through valve respectively after the tracheae branch, during deslagging, close vacuum valve earlier, the deslagging end cap of reduction jar is opened, open the pressurized air valve again, pressurized air forms pressure at the charging bole end of reduction jar, will the reduction waste residue releases from the slag-drip opening of reduction jar.
7. Slagoff method according to claim 6 is characterized in that: for burn people and polluting of the waste residue that prevents to discharge, be provided with dw on the back wall of reduction furnace slag-drip opening end; Be provided with actuating doors with the slag-drip opening corresponding position on the dw, to be easy to open or to close the deslagging end cap; The top of dw is provided with extractor fan, and dust and hot gas are extracted out; The below of dw is provided with the ash pit that is lower than reduction furnace ground, collects the waste residue and the discharge in time of discharging.
CN2006102011307A 2006-11-22 2006-11-22 Slag discharging method and device for metal vacuum smelting reduction furnace CN101191156B (en)

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CN101191156B true CN101191156B (en) 2010-12-01

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208722B3 (en) * 1972-12-01 1976-10-15 Slagmet Ag
CN1097060A (en) * 1993-06-28 1995-01-04 工业保养及合约服务公司 Slag control method and apparatus
CN2619222Y (en) * 2002-10-17 2004-06-02 北京鑫化嘉业技术有限责任公司 Vacuum smelting device
CN1786638A (en) * 2005-12-02 2006-06-14 太原钢铁(集团)有限公司 Slag-removing pot cleaning machine for metallurgy furnace

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208722B3 (en) * 1972-12-01 1976-10-15 Slagmet Ag
CN1097060A (en) * 1993-06-28 1995-01-04 工业保养及合约服务公司 Slag control method and apparatus
CN2619222Y (en) * 2002-10-17 2004-06-02 北京鑫化嘉业技术有限责任公司 Vacuum smelting device
CN1786638A (en) * 2005-12-02 2006-06-14 太原钢铁(集团)有限公司 Slag-removing pot cleaning machine for metallurgy furnace

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
孙殿军.真空冶金装置(四)—真空感应炉.《真空科学与技术》.1985,第5卷(第1期),69-80,36. *

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