CN213232449U

CN213232449U - Device for removing low-density scum in metal refining process

Info

Publication number: CN213232449U
Application number: CN202022168856.3U
Authority: CN
Inventors: 陈云; 谢云华; 袁海滨; 王红彬; 李周华; 吴红星; 王建伟; 唐都作; 徐万立; 马松立
Original assignee: Smelting Branch Yunnan Tin Co ltd
Current assignee: Smelting Branch Yunnan Tin Co ltd
Priority date: 2020-09-28
Filing date: 2020-09-28
Publication date: 2021-05-18
Anticipated expiration: 2030-09-28

Abstract

The utility model relates to a get rid of device of metal refining in-process low density dross belongs to metal smelting technical field, the device of getting rid of metal refining in-process low density dross include fume hood, suction hood, fixed pipe, cooler, dust collector, draught fan, play dirt pipe, air-supply line, tuber pipe, still including the fixed adjusting device that can fix and position adjustment to fume hood. The low-density slag removed by the utility model can directly enter the rotary kiln to be treated, so that one pretreatment procedure is reduced, and the production operation cost can be greatly reduced; meanwhile, the utility model effectively avoids the loss caused by the flying of the metal dust of the low-density slag in the process of removing the low-density slag; the number of workers can be greatly reduced, the labor cost is saved, and the economic benefit is improved. And simultaneously, the utility model discloses still improve the mechanical automation level of dragging for the sediment operation, reduced the staff and dragged for sediment operation intensity repeatedly, improved production efficiency.

Description

Device for removing low-density scum in metal refining process

Technical Field

The utility model belongs to the technical field of metal smelting, specifically speaking relates to a get rid of device of metal refining in-process low density dross.

Background

In the metal refining and impurity removing process, various impurity metals basically exist in the forms of simple substances and oxides, different production enterprises can refine crude metals according to market requirements, and the process of separating other metals is called impurity removing. In the impurity removing process, different types and quantities of additives are required to be added to generate scum with low density and high melting point. In the process of dragging the slag, a large amount of flying slag is generated due to fine granularity and low density of a large amount of floating slag, and meanwhile, the fine slag which is not dragged out enters the next process, so that the cost is increased.

Taking a tin refining process as an example, when impurities such as arsenic, antimony, copper and the like are removed in crude tin refining, materials such as aluminum particles, sulfur, ammonium chloride, sawdust and the like are added respectively to generate scum with high melting point and low density to float on the surface of tin liquid, manual scum dredging operation is usually adopted, a large amount of dust can be generated in the scum dredging and deslagging processes, the operation environment is poor, and meanwhile, the scum dredging rate basically does not exceed 80%.

The low-density slag generated by impurity removal has small density and fine granularity, the dust raising is large in the slag dragging, transporting and deslagging processes, the operation environment is poor, along with the increasing emphasis degree of the country on the environmental protection and the physical and mental health of the staff, the operation environment does not accord with the environmental protection requirement and is not beneficial to the physical and mental health of the staff. Meanwhile, the scum can not be completely fished out, so that the workload of the next procedure, the production operation cost and the technical quality index are increased. In addition, the superfine slag can flow out of the funnel hole in the slag dragging process, and workers need to drag the slag repeatedly, so that the operation intensity is high, and the efficiency is low.

Disclosure of Invention

In order to overcome the problem that exists among the background art, the utility model provides a get rid of device of metal refining in-process low density dross reduces that the low density dross that the miscellaneous process of tin refining produced flies upward loss and environmental pollution, effectively improves and drags for sediment efficiency, improves and takes off miscellaneous technical quality index, reduction in production cost and staff intensity of labour.

In order to achieve the above purpose, the utility model is realized by the following technical scheme:

a device for removing low-density dross in the metal refining process comprises a flue gas hood 1, an air draft hood 2, a fixed pipe 3, a cooler 4, a dust collector 5, an induced draft fan 6, a dust outlet pipe 7, an air inlet pipe 8, an air pipe 9 and an impurity removing pot 10, wherein the flue gas hood 1 is installed at the top of the impurity removing pot 10, a flue gas pipe 11 is arranged at the top of the flue gas hood 1, the air draft hood 2 is installed in the flue gas hood 1, the fixed pipe 3 is arranged at the top of the air draft hood 2, the fixed pipe 3 is connected with an inlet of the cooler 4 through the dust outlet pipe 7, an outlet of the cooler 4 is connected with an inlet of the dust collector 5 through a pipeline, an outlet of the dust collector 5 is connected with an air inlet of the induced draft fan 6 through a pipeline, an air outlet of the induced draft fan 6 is connected with the air pipe; and a two-way air locking valve I26 is arranged at a dust outlet at the bottom of the cooler 4, and a two-way air locking valve II 27 is arranged at a dust outlet at the bottom of the dust collector 5.

Further, the apparatus for removing low-density dross in a metal refining process further includes a fixing and adjusting device 12 capable of fixing and adjusting the position of the hood 2.

Further, the fixed adjusting device 12 comprises a movable base 13, a movable column 14, a cantilever 15, a lead screw i 16, a motor i 17, a slide rail 18, a slide block 19, a lead screw ii 20, a connecting rod 21, a through type linear lead screw motor 22, a fixed rod 23, a motor ii 24 and a gear transmission mechanism 25, wherein the movable column 14 is mounted on the movable base 13 through a bearing, the cantilever 15 is mounted on the movable column 14 in a sleeved manner, a threaded hole parallel to the movable column 14 is formed in the cantilever 15, the motor i 17 is mounted at the top of the movable column 14, the output end of the motor i 17 is connected with the lead screw i 16, and the lead screw i 16 is in threaded connection with the threaded hole in the cantilever 15; a slide rail 18 and a lead screw II 20 which are parallel to each other are arranged on the cantilever 15, and an opening which is convenient for the slide rail 18 and the lead screw II 20 to move is formed in the flue gas hood 1; the sliding rail 18 is provided with a sliding block 19, the sliding block 19 is provided with a screw hole in threaded connection with the II screw rod 20, the sliding block 19 is provided with a through linear screw rod motor 22 connected with the II screw rod 20, the lower end of the sliding block 19 is provided with a connecting rod 21, the connecting rod 21 is provided with a fixing rod 23 used for installing the fixing pipe 3, the moving base 13 is internally provided with a motor II 24, and a power output shaft of the motor II 24 is connected with the lower end of the moving column 14 through a gear transmission mechanism 25.

Further, the fixed adjusting device 12 further comprises a control module 28, and the motor i 17, the through type linear screw motor 22, the motor ii 24 and the induced draft fan 6 are respectively connected with the control module 28 through relays.

Furthermore, the dust outlet pipe 7 and the air inlet pipe 8 are both metal hoses.

The utility model has the advantages that:

the low-density slag removed by the utility model can directly enter the rotary kiln to be treated, so that one pretreatment procedure is reduced, and the production operation cost can be greatly reduced; meanwhile, the utility model effectively avoids the loss caused by the flying of the metal dust of the low-density slag in the process of removing the low-density slag; the number of workers can be greatly reduced, the labor cost is saved, and the economic benefit is improved. And simultaneously, the utility model discloses still improve the mechanical automation level of dragging for the sediment operation, reduced the staff and dragged for sediment operation intensity repeatedly, improved production efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the fixing and adjusting device of the present invention;

fig. 3 is a wiring diagram of the control circuit of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the embodiments of the present invention and the accompanying drawings, and obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1, a device for removing low-density dross in a metal refining process comprises a flue gas hood 1, a draught hood 2, a fixed pipe 3, a cooler 4, a dust collector 5, a draught fan 6, a dust outlet pipe 7, an air inlet pipe 8, an air pipe 9 and a impurity removing pot 10.

Flue gas hood 1 install at the top of taking off miscellaneous pot 10, the top of flue gas hood 1 is provided with flue gas pipe 11, install exhaust hood 2 in the flue gas hood 1, the top of exhaust hood 2 is provided with fixed pipe 3, fixed pipe 3 is through the access connection of play dirt pipe 7 with cooler 4, the access connection that the pipeline was passed through in the export of cooler 4, the air intake connection of pipeline and draught fan 6 is passed through in the export of dust collector 5, the air outlet and the tuber pipe 9 of draught fan 6 are connected, tuber pipe 9 is connected with the air-supply line 8 of installing on exhaust hood 2. Putting the metal solution to be subjected to impurity removal into an impurity removal pot 10; the metal solution in the impurity removing pot 10 is heated, and the impurity removing additive matched with the metal is added into the impurity removing pot 10, so that scum with low density and high melting point is generated with the impurity metal in the metal solution in the impurity removing pot 10. Then the liquid metal is cooled to the solidifying point of the metal impurities to form high-density slag for fishing. After the high-density slag is fished out, the metal solution in the impurity pot 10 is heated, and the impurity removing agent is added into the impurity pot 10 for chemical reaction to form scum with bottom density, wherein part of impurities in the scum with low density belong to ultrafine particles. In the process of removing the bottom density scum, firstly, a flue gas hood 1 is installed at the top of a impurity removing pot 10, then an air draft hood 2 is positioned above the liquid level of the metal solution, air is introduced into the air draft hood 2 through an air inlet pipe 8 by starting a cooler 4, a dust collector 5 and an induced draft fan 6, the induced draft fan 6 lifts the low density scum on the liquid level of the metal solution through the air blown from the air inlet pipe 8 within the limited range of the air draft hood 2 under the action of the air draft hood 2 after the air blown from the air inlet pipe 8 is blown out, and meanwhile, negative pressure is formed in a fixed pipe 3 connected with a dust outlet pipe 7 in the air draft hood 2 connected with the fixed pipe 3 under the action of the induced draft fan 6, so that the low density scum lifted by the air blown from the air inlet pipe 8 is sucked under the guiding action of the air draft hood 2; part of the low-density scum overflowing the draft hood 2 can prevent the scum from overflowing into the air to cause environmental pollution under the action of the smoke hood 1. Because the sucked low-density scum has higher temperature which reaches more than 200 ℃, the low-density scum sucked by the negative pressure air of the fixed pipe 3 enters the cooler 4 for cooling, and the cooled low-density scum enters the dust collector 5 along with the negative pressure air for collecting the scum; a cooler 4 is added in front of the dust collector 5 to ensure that the dust collector 5 is not burnt out by high temperature in the dust collecting process.

The utility model discloses in, get rid of device of metal refining in-process low density dross still include can fix the fixed adjusting device 12 with position adjustment to draught hood 2. As shown in fig. 2, the fixed adjusting device 12 includes a movable base 13, a movable column 14, a cantilever 15, a lead screw i 16, a motor i 17, a slide rail 18, a slide block 19, a lead screw ii 20, a connecting rod 21, a through linear lead screw motor 22, a fixing rod 23, a motor ii 24, and a gear transmission mechanism 25, wherein the movable column 14 is mounted on the movable base 13 through a bearing, the cantilever 15 is mounted on the movable column 14 in a sleeved manner, a threaded hole parallel to the movable column 14 is formed in the cantilever 15, the motor i 17 is mounted at the top of the movable column 14, an output end of the motor i 17 is connected with the lead screw i 16, and the lead screw i 16 is in threaded connection with the threaded hole in the cantilever 15; a slide rail 18 and a lead screw II 20 which are parallel to each other are arranged on the cantilever 15, and an opening which is convenient for the slide rail 18 and the lead screw II 20 to move is formed in the flue gas hood 1; the sliding rail 18 is provided with a sliding block 19, the sliding block 19 is provided with a screw hole in threaded connection with the II screw rod 20, the sliding block 19 is provided with a through linear screw rod motor 22 connected with the II screw rod 20, the lower end of the sliding block 19 is provided with a connecting rod 21, the connecting rod 21 is provided with a fixing rod 23 used for installing the fixing pipe 3, the moving base 13 is internally provided with a motor II 24, and a power output shaft of the motor II 24 is connected with the lower end of the moving column 14 through a gear transmission mechanism 25. The motor I17 drives the lead screw I16 to rotate, the rotation of the lead screw I16 drives the cantilever 15 to move up and down along the lead screw I16 and the moving column 14, so that the height of the draft hood 2 is adjusted according to the height of the metal solution in the impurity removing pot 10, and the draught fan 6 is guaranteed to be capable of effectively sucking and removing low-density scum on the surface of the metal solution through the draft hood 2. The whole fixed adjusting device 12 can be driven to move by moving the base 13, so that the position of the fixed adjusting device 12 can be adjusted, the position between the whole fixed adjusting device 12 and the impurity removing pot 10 is suitable, and the slide rail 18 can be ensured to extend into the flue gas hood 1 from the opening on the flue gas hood 1; and at this time, the through type linear screw motor 22 can drive the screw II 20 to rotate, the sliding block 19 mounted on the screw II 20 moves along the length directions of the screw II 20 and the sliding rail 18, so that the sliding block 19 drives the air draft cover 2 to move along the length direction of the sliding rail 18, and the air draft cover 2 can move left and right above the metal solution of the impurity removing pot 10. The motor II 24 can drive the moving column 14 to rotate through the gear transmission mechanism 25, so that the cantilever 15 is driven to rotate along with the moving column 14, and the front position and the rear position of the air draft cover 2 are adjusted. Therefore, under the condition that the left and right positions and the front and back positions of the draft hood 2 are adjusted, the low-density scum at different positions on the metal solution surface of the impurity removing pot 10 can be absorbed one by one through the draft hood 2 under the action of the draught fan 6.

As shown in fig. 3, the fixing and adjusting device 12 further includes a control module 28, and the motor i 17, the through type linear screw motor 22, the motor ii 24, and the induced draft fan 6 are respectively connected to the control module 28 through a relay. Through setting up control module 28, when the suction hood 2 that needs to be adjusted reciprocates the position, can control motor I17 fast through control module 28, make motor I17 drive the operation of lead screw I16, make cantilever 15 reciprocate under the drive of lead screw I16. When the front and back movement position of the exhaust hood 2 needs to be adjusted, the control module 28 rapidly controls the motor ii 24 to work, so that the motor ii 24 drives the moving column 14 to rotate, and the front and back movement of the exhaust hood 2 is realized. When the left and right positions need to be adjusted, the control module 28 quickly controls the through type linear screw motor 22 to work, so as to drive the screw II 20 to rotate and drive the sliding block 19 to move left and right along the sliding block, and therefore the air draft cover 2 can move left and right. Thus, the motor I17, the through linear screw motor 22 and the motor II 24 are automatically controlled to automatically work through the control module 28, so that the air draft cover 2 can be positioned above the surface of the metal solution of the impurity removing pot 10, and then the control module 28 controls the induced draft fan 6 to work, so that the low-density scum on the surface of the metal solution of the impurity removing pot 10 can be gradually sucked and removed through the air draft cover 2 without dead angles. Meanwhile, the control module 28 can control the air draft cover 2 to move and suck dust for multiple times above the surface of the metal solution, so that the low-density scum can be thoroughly sucked.

The dust outlet pipe 7 and the air inlet pipe 8 are both metal hoses which can resist high temperature.

And a two-way air locking valve I26 is arranged at a dust outlet at the bottom of the cooler 4, and a two-way air locking valve II 27 is arranged at a dust outlet at the bottom of the dust collector 5. By arranging the two-way air locking valve I26 and the two-way air locking valve II 27, low-density slag can be prevented from flying in the ash discharging process of the cooler 4 and the dust collector 5.

Examples

By adopting the device to carry out crude tin impurity removal as an example, the crude tin yield is 50 t/machine class, wherein the tin content of slag generated in the crude tin impurity removal is 10 t/machine class. The following percentage contents of high-density slag and scum generated by the tin-containing slag in each process are as follows:

from the above table, it is statistically known that each shift produces 4.71t of high-density slag; the low-density slag is 5.29 t. If the operation is carried out in three shifts, the high-density slag is generated at 14.13t every day; the low-density slag is 15.87 t.

The effective operation time is 300 days each year, and the total high-density slag is produced as follows: 14.13 multiplied by 300 is 4239t, the tin content of the high-density slag is 60 percent to 65 percent, and the high-density slag is sent to a centrifuge and other working procedures for treatment; low-density slag: 15.87 × 300-4761 t, the tin content of the low-density slag is about 40-50%, and the low-density slag is returned to a metallurgical furnace for secondary treatment.

If 4761t low-density slag and high-density slag are sent into a centrifuge and other next working procedures for treatment, the technical quality index of the next working procedure is influenced, and the workload and the production operation cost of the next working procedure are increased; and secondly, in the processes of impurity removal, slag salvaging, transportation, slag dumping and slag treatment, about 1 percent of low-density slag flies upward to cause metal loss, the annual metal loss is 47.61t, and simultaneously, the environmental pollution is caused.

So the utility model discloses reduce the work load and the production operation cost and the technical quality index of aftertreatment process. 1.4t of low-density slag is directly treated in a rotary kiln every day, one pretreatment procedure is omitted, the pretreatment cost is 500 yuan/t, and 1.4 × 300 × 500-210000 yuan of production operation is saved every year; the metal dust flying loss of the low-density slag is avoided to be 47.61 multiplied by 50 percent multiplied by 110000 which is 2618550 yuan; the number of employees can be reduced from 24 to 16, the labor cost is saved by 8 multiplied by 80000 to 640000 yuan each year, and the economic benefit is increased each year: 210000+2618550+640000 is 3468550 yuan.

Therefore, the low-density slag removed by the utility model can directly enter the rotary kiln process for treatment, one pretreatment process is reduced, and the production operation cost can be greatly reduced; meanwhile, the utility model effectively avoids the loss caused by the flying of the metal dust of the low-density slag in the process of removing the low-density slag; the number of workers can be greatly reduced, the labor cost is saved, and the economic benefit is improved. And simultaneously, the utility model discloses still improve the mechanical automation level of dragging for the sediment operation, reduced the staff and dragged for sediment operation intensity repeatedly, improved production efficiency.

Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the invention, and that, although the invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.

Claims

1. A device for removing low-density dross in a metal refining process is characterized in that: the device for removing the low-density scum in the metal refining process comprises a flue gas hood (1), a suction hood (2), a fixed pipe (3), a cooler (4), a dust collector (5), an induced draft fan (6), a dust outlet pipe (7), an air inlet pipe (8), an air pipe (9) and a sundry removing pot (10), wherein the flue gas hood (1) is arranged at the top of the sundry removing pot (10), the top of the flue gas hood (1) is provided with a flue gas pipe (11), the suction hood (2) is arranged in the flue gas hood (1), the top of the suction hood (2) is provided with the fixed pipe (3), the fixed pipe (3) is connected with an inlet of the cooler (4) through the dust outlet pipe (7), an outlet of the cooler (4) is connected with an inlet of the dust collector (5) through a pipeline, an outlet of the dust collector (5) is connected with an air inlet of the induced draft fan (6) through a pipeline, an air outlet of the induced draft, the air pipe (9) is connected with an air inlet pipe (8) arranged on the exhaust hood (2); the bottom of cooler (4) go out dirt mouth department and install two-way airlock valve I (26), the bottom of dust collector (5) goes out dirt mouth department and installs two-way airlock valve II (27).

2. The apparatus for removing low-density dross in a metal refining process as recited in claim 1, wherein: the device for removing the low-density dross in the metal refining process also comprises a fixing and adjusting device (12) which can fix and adjust the position of the draft hood (2).

3. An apparatus for removing low density dross from a metal refining process as recited in claim 2, wherein: the fixed adjusting device (12) comprises a movable base (13), a movable column (14), a cantilever (15), a lead screw I (16), a motor I (17), a sliding rail (18), a sliding block (19), a lead screw II (20), a connecting rod (21), a through type linear lead screw motor (22), a fixed rod (23), a motor II (24) and a gear transmission mechanism (25), wherein the movable column (14) is installed on the movable base (13) through a bearing, the cantilever (15) is installed on the movable column (14) in a sleeved mode, a threaded hole parallel to the movable column (14) is formed in the cantilever (15), the motor I (17) is installed at the top of the movable column (14), the output end of the motor I (17) is connected with the lead screw I (16), and the lead screw I (16) is in threaded connection with the threaded hole in the cantilever (15); a slide rail (18) and a lead screw II (20) which are parallel to each other are arranged on the cantilever (15), and an opening which is convenient for the slide rail (18) and the lead screw II (20) to move is formed in the smoke hood (1); install sliding block (19) on slide rail (18), and set up the screw with II (20) threaded connection of lead screw on sliding block (19), install on sliding block (19) and run through formula linear screw motor (22) of being connected with II (20) of lead screw, connecting rod (21) are installed to the lower extreme of sliding block (19), install on connecting rod (21) and be used for installing dead lever (23) of fixed pipe (3), install motor II (24) in removal base (13), the power output shaft of motor II (24) passes through gear drive (25) and is connected with the lower extreme that removes post (14).

4. An apparatus for removing low density dross from a metal refining process as recited in claim 3, wherein: the fixed adjusting device (12) further comprises a control module (28), and the motor I (17), the penetrating type linear screw motor (22), the motor II (24) and the draught fan (6) are respectively connected with the control module (28) through relays.

5. The apparatus for removing low-density dross in a metal refining process as recited in claim 1, wherein: the dust outlet pipe (7) and the air inlet pipe (8) are both metal hoses.