CN102806143B - Screening and magnetic separation system for waste steel and steel slag and screening and magnetic separation method thereof - Google Patents

Screening and magnetic separation system for waste steel and steel slag and screening and magnetic separation method thereof Download PDF

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Publication number
CN102806143B
CN102806143B CN201210292115.3A CN201210292115A CN102806143B CN 102806143 B CN102806143 B CN 102806143B CN 201210292115 A CN201210292115 A CN 201210292115A CN 102806143 B CN102806143 B CN 102806143B
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hopper
fine powder
belt
feeder
iron block
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CN102806143A (en
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王瑞宾
呼中路
李志敏
丁理
夏长东
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Wuhu Xinxing Ductile Iron Pipes Co Ltd
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Wuhu Xinxing Ductile Iron Pipes Co Ltd
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Abstract

The invention discloses a screening and magnetic separation system for waste steel and steel slag. The screening and magnetic separation system comprises a mixed material hopper, wherein an efficient vibrating grizzly is arranged above an opening in the upper part of the mixed material hopper; a variable frequency electric vibrating feeder and a belt conveyor are arranged below a material leaking opening in the lower part of the mixed material hopper; the belt conveyor is obliquely arranged; the lower end of the belt conveyor is positioned below the variable frequency electric vibrating feeder and the higher end of the belt conveyor uses an adjustable magnetic core type permanent magnetic roller; a shunt is arranged below the adjustable magnetic core type permanent magnetic roller; the shunt is two funnels, one of which is a fine powder and iron block funnel and the other one of which is a nonmetal funnel; and an electric vibrating screen is arranged below the fine powder and iron block funnel. The invention further discloses a screening and magnetic separation method of the system. Through the adoption of the technical scheme, the traditional steel (iron) slag magnetic separation process and equipment are greatly simplified; the mounting cost is reduced; a very quick effect is achieved; and purposes of increasing production efficiency, reducing labor intensity of a worker and reducing production cost are achieved.

Description

The sub-sieve magnetic separation system of a kind of steel scrap, slag and sub-sieve magnetic selection method thereof
Technical field
The invention belongs to the technical field that metallurgical industry is produced, relate to the treatment technology of steel scrap, slag, more particularly, the present invention relates to the sub-sieve magnetic separation system of a kind of steel scrap, slag.In addition, the invention still further relates to the sub-sieve magnetic selection method of this system.
Background technology
The mixture of iron-holder more than about 40% such as steel scrap (iron), slag that steel-making, cast tube and other metallurgical production units produce in process of production, and the shape size of mixture differs, as recycled without magnetic separation.
But in the prior art, the Slag treatment in steel-making portion is limited in one's ability, magnetic separation cannot be carried out to this part mixture, thus cause a large amount of scrap metal to pile up waste.
Summary of the invention
The invention provides the sub-sieve magnetic separation system of a kind of steel scrap, slag, its objective is the production efficiency improving steel scrap, slag processing.
To achieve these goals, the technical scheme that the present invention takes is:
The sub-sieve magnetic separation system of steel scrap provided by the present invention, slag, the sub-sieve magnetic separation system of described steel scrap, slag comprises mixture hopper; Above the upper opening of described mixture hopper, establish high-efficiency vibration diagrid, frequency conversion type electromagnetic vibration feeder and band conveyor are established in the below of the leakage material mouth of its underpart; Described band conveyor is obliquely installed, and lower one end is positioned at the below of described frequency conversion type electromagnetic vibration feeder, and higher one end adopts adjustable magnetic-core type permanent magnetic pulley; Establish current divider in the below of described adjustable magnetic-core type permanent magnetic pulley, described current divider is two funnels, and one of them is fine powder, iron block funnel, and another is nonmetal funnel; Electric vibrating screen net is established in the below of described fine powder, iron block funnel.
Described electric vibrating screen net is obliquely installed; Fine powder hopper is established, below the outside, side that described electric vibrating screen net is lower, if iron block hopper in the below of described electric vibrating screen net.
Fine powder ribbon conveyer is established in the below of described fine powder hopper; Iron block ribbon conveyer is established in the below of described iron block hopper.
Outside described mixture hopper upper opening, if discharging opening, jaw crusher is established in the below of described discharging opening; The side of described mixture hopper, if belt-type cycle feeder, described belt-type cycle feeder is for being obliquely installed, the below of described jaw crusher, by hopper by mass transport to the lower one end of described belt-type cycle feeder, one end that described belt-type cycle feeder is higher, by hopper by mass transport to material inlet belt conveyor; The discharge end of described material inlet belt conveyor, is located at the top of described high-efficiency vibration diagrid.
Described mixture hopper is arranged on steel structure frame; And multiple compressed spring type damper is arranged between the bearing-surface of described steel structure frame and mixture hopper.
Described frequency conversion type electromagnetic vibration feeder is arranged on described steel structure frame by multiple Extension Spring-type damper.
The leakage material mouth of the bottom of described mixture hopper, if manual platform gate.
One end that described band conveyor is lower, if regulate screw mandrel, is connected with the cylinder of band conveyor.
Described fine powder ribbon conveyer, the mutually close end of iron block ribbon conveyer, be equipped with adjustment screw mandrel, be connected with the cylinder of conveyer.
The electrical control part of the sub-sieve magnetic separation system of described steel scrap, slag comprises:
Engineer station, post operation station, network line concentrator, Programmable Logic Controller, master operating station, controller slave station, oscillating feeder frequency converter, belt conveyor frequency converter, vibratory sieve batcher frequency converter;
Described engineer station, post operation station, network line concentrator, Programmable Logic Controller are connected by ethernet line;
Described master operating station is connected with Programmable Logic Controller by control signal wire;
Described controller slave station, oscillating feeder frequency converter, belt conveyor frequency converter, vibratory sieve batcher frequency converter are connected with described Programmable Logic Controller by communication bus;
Described controller slave station is connected with local operation case by control signal wire;
Described oscillating feeder frequency converter is connected with oscillating feeder motor by control signal wire; Described belt conveyor frequency converter is connected with belt conveyor motor by control signal wire; Described vibratory sieve batcher frequency converter is connected with vibratory sieve batcher motor by control signal wire;
Described oscillating feeder motor is the drive motors of described frequency conversion type electromagnetic vibration feeder; Described belt conveyor motor is the drive motors of described band conveyor; Described vibratory sieve batcher motor is the drive motors of described electric vibrating screen net.
In order to realize the invention identical with technique scheme, present invention also offers the sub-sieve magnetic selection method of sub-sieve magnetic separation system of above-mentioned steel scrap, slag, the process of described sub-sieve magnetic selection method is:
1, mixture is passed through material inlet belt conveyor or feed leakage bucket, be transported to high-efficiency vibration diagrid, by screening, the mixture of diameter≤200mm is leaked into mixture hopper; Send the bulk mixture of diameter >=200mm to jaw crusher fragmentation by discharging opening, then return high-efficiency vibration diagrid by belt-type cycle feeder, enter mixture hopper;
2, by frequency conversion type electric vibrating feeder and adjustment type buffer, control delivery rate and feeding coal, compound is layered on band conveyor equably;
By the THICKNESS CONTROL of the compound on belt within 10mm; Regulated the rotating speed of belt roller by frequency control, the linear velocity that the belt roller of band conveyor rotates is adjusted to 300mm/s ~ 500mm/s;
3, when compound arrives the position of adjustable magnetic-core type permanent magnetic pulley, by regulating the magnetic flux of its magnetic core, reach best magnetic separation position, by the current divider below adjustable magnetic-core type permanent magnetic pulley, by iron-holder 40%(quality) and above fine powder, scrap iron block, shunt with nonmetallic substance;
4, by electric vibrating screen net, fine powder is separated with scrap iron block again;
Fine powder, by the eyelet of electric vibrating screen net, enters fine powder hopper, then falls on the belt of fine powder ribbon conveyer;
Scrap iron block imports iron block hopper, then falls on the belt of iron block ribbon conveyer;
5, by two band conveyors, respectively fine powder and scrap iron block are transported to respective storing area.
The present invention adopts technique scheme, is greatly simplified by the technology and equipment of traditional steel (iron) slag magnetic separation, reduces installation cost; Take effect quickly, reach and improve production efficiency, reduce the labour intensity of worker, reduce production cost object.
Accompanying drawing explanation
Below the content expressed by each width accompanying drawing of this description and the mark in figure are briefly described:
Fig. 1 is structural representation of the present invention;
Fig. 2 is the schematic top plan view of structure shown in Fig. 1;
Fig. 3 is the category filter structural representation in the present invention;
Fig. 4 is the electric system structural representation in the present invention.
Be labeled as in Fig. 1 to Fig. 3:
1, high-efficiency vibration diagrid, 2, discharging opening, 3, mixture hopper, 4, frequency conversion type electromagnetic vibration feeder, 5, band conveyor, 6, adjustable magnetic-core type permanent magnetic pulley, 7, current divider, 8, electric vibrating screen net, 9, fine powder ribbon conveyer, 10, iron block ribbon conveyer, 11, steel structure frame, 12, compressed spring type damper, 13, Extension Spring-type damper, 14, adjusting screw, 15, manual platform gate, 16, jaw crusher, 17, material inlet belt conveyor, 18, belt-type cycle feeder, 19, fine powder hopper, 20, iron block hopper.
Being labeled as in Fig. 4:
1, engineer station, 2, post operation station, 3, ethernet line, 4, Programmable Logic Controller, 5, controller slave station, 6, oscillating feeder frequency converter, 7, belt conveyor frequency converter, 8, vibratory sieve batcher frequency converter, 9, communication bus, 10, control signal wire, 11, oscillating feeder motor, 12, belt conveyor motor, 13, vibratory sieve batcher motor, 14, master operating station, 15, local operation case, 16, network line concentrator.
Detailed description of the invention
Contrast accompanying drawing below, by the description to embodiment, the specific embodiment of the present invention is described in further detail, have more complete, accurate and deep understanding to help those skilled in the art to inventive concept of the present invention, technical scheme.
The of the present invention structure of the following stated expressed by Fig. 1, Fig. 2 and Fig. 3 is the sub-sieve magnetic separation system of a kind of steel scrap, slag.
In order to solve prior art Problems existing and overcome its defect, the goal of the invention of the production efficiency of realization raising steel scrap, slag processing, the technical scheme that the present invention takes is:
As shown in Figure 1 to Figure 3, the sub-sieve magnetic separation system of steel scrap provided by the present invention, slag, the sub-sieve magnetic separation system of described steel scrap, slag comprises mixture hopper 3; Above the upper opening of described mixture hopper 3, establish high-efficiency vibration diagrid 1, frequency conversion type electromagnetic vibration feeder 4 and band conveyor 5 are established in the below of the leakage material mouth of its underpart; Described band conveyor 5 is obliquely installed, and lower one end is positioned at the below of described frequency conversion type electromagnetic vibration feeder 4, and higher one end adopts adjustable magnetic-core type permanent magnetic pulley 6; Establish current divider 7 in the below of described adjustable magnetic-core type permanent magnetic pulley 6, described current divider 7 is two funnels, and one of them is fine powder, iron block funnel, and another is nonmetal funnel; Electric vibrating screen net 8 is established in the below of described fine powder, iron block funnel.
Band conveyor 5 is arranged on the below of frequency conversion type electric vibrating feeder 4 in 30 ° of elevations angle, the length of band conveyor 5, according to the adjustment of place restraint of liberty, is generally adjusted to 5 ~ 7m and is advisable.
Adjustable magnetic-core type permanent magnetic pulley 6 is arranged on the exit side of band conveyor 5 belt, current divider 7 is installed in below, according to the position of current divider 7, magnetic core is adjusted to optimum position, principle is separated with metal charge by nonmetal material (iron-holder is below about 40%).
In the side distributing metal charge, electric vibrating screen net 8 is installed.The order number of screen cloth customizes according to technological requirement, and object is by the fine powder for sintering and shunts out for the heavy scrap of steel-making.
Described electric vibrating screen net 8 is obliquely installed; Fine powder hopper 19 is established, below the outside, side that described electric vibrating screen net 8 is lower, if iron block hopper 20 in the below of described electric vibrating screen net 8.
Fine powder ribbon conveyer 9 is established in the below of described fine powder hopper 19; Iron block ribbon conveyer 10 is established in the below of described iron block hopper 20.
Namely fine powder ribbon conveyer 9 is arranged on the below of electric vibrating screen net 8, side will be transferred to for sintering fine powder and pile up.Iron block ribbon conveyer 10 is arranged on the outlet side of electric vibrating screen net 8, opposite side will be transferred to for steel-making heavy scrap and pile up.
Outside described mixture hopper 3 upper opening, if discharging opening 2, jaw crusher 16 is established in the below of described discharging opening 2; The side of described mixture hopper 3, if belt-type cycle feeder 18, described belt-type cycle feeder 18 is for being obliquely installed, the below of described jaw crusher 16, by hopper by mass transport to the lower one end of described belt-type cycle feeder 18, one end that described belt-type cycle feeder 18 is higher, by hopper by mass transport to material inlet belt conveyor 17; The discharge end of described material inlet belt conveyor 17, is located at the top of described high-efficiency vibration diagrid 1.
The bulk material sifted out for high-efficiency vibration diagrid 1 sends into jaw crusher 16 fragmentation by discharging opening 2, again broken material is sent into material inlet belt conveyor 17 by belt-type cycle feeder 18, and then to carry out sub-sieve by high-efficiency vibration diagrid 1, realize the circular treatment of material, to make material process more thoroughly with abundant.
Described mixture hopper 3 is arranged on steel structure frame 11; And multiple compressed spring type damper 12 is arranged between described steel structure frame 11 and the bearing-surface of mixture hopper 3.
Make steel structure frame 11 according to hopper and the entirely iron of same volume, be placed on by mixture hopper 3 on steel structure frame 11, the advantage of this type of installation form is less demanding to place.
High-efficiency vibration diagrid 1 is installed to above hopper 3 by compressed spring type damper 12.Compressed spring type damper 12 alleviates its vibration to the impact of mixture hopper 3 and whole fuselage.
Described frequency conversion type electromagnetic vibration feeder 4 is arranged on described steel structure frame 11 by multiple Extension Spring-type damper 13.
By Extension Spring-type damper 13 and adjusting screw 14, frequency conversion type electromagnetic vibration feeder 4 is suspended on below hopper 3.Extension Spring-type damper 13 alleviates its impact of vibration on whole fuselage.
The leakage material mouth of the bottom of described mixture hopper 3, if manual platform gate 15.Manual platform gate 15 can control the size of Lou doses.
One end that described band conveyor 5 is lower, if regulate screw mandrel 14, is connected with the cylinder of band conveyor 5.The effect of screw mandrel 14 is regulated to be the degrees of tightness regulating band conveyor 5 belt.
Described fine powder ribbon conveyer 9, the mutually close end of iron block ribbon conveyer 10, be equipped with and regulate screw mandrel 14, be connected with the cylinder of conveyer.Its effect is also the degree of tightness for regulating belt.
The system that the present invention is classified by the efficient magnetic separation provided above, greatly simplified by the technology and equipment of traditional steel (iron) slag magnetic separation, installation cost is very low, takes effect quickly.Adopt technique scheme, reach and substantially increase production efficiency, reduce the labour intensity of worker, reduce production cost object.
In order to realize the invention identical with technique scheme, present invention also offers the sub-sieve magnetic selection method of sub-sieve magnetic separation system of above-mentioned steel scrap, slag, the process of described sub-sieve magnetic selection method is:
1, mixture is passed through material inlet belt conveyor 17 or feed leakage bucket, be transported to high-efficiency vibration diagrid 1, by screening, the mixture of diameter≤200mm is leaked into mixture hopper 3; Send the bulk mixture of diameter >=200mm to jaw crusher 16 by discharging opening 2 broken, then return high-efficiency vibration diagrid 1 by belt-type cycle feeder 18, enter mixture hopper 3;
2, by frequency conversion type electric vibrating feeder 4 and adjustment type buffer, control delivery rate and feeding coal, make compound be layered on band conveyor 5 equably;
For ensureing magnetic separation effect, generally by the THICKNESS CONTROL of the compound on belt within 10mm; Regulated the rotating speed of belt roller by frequency control, the linear velocity that the belt roller of band conveyor 5 rotates is adjusted to 300mm/s ~ 500mm/s;
3, when compound arrives the position of adjustable magnetic-core type permanent magnetic pulley 6, by regulating the magnetic flux of its magnetic core, reach best magnetic separation position, by the current divider 7 below adjustable magnetic-core type permanent magnetic pulley 6, by iron-holder 40%(quality) and above fine powder, scrap iron block, shunt with nonmetallic substance;
4, by electric vibrating screen net 8, fine powder is separated with scrap iron block again;
Fine powder, by the eyelet of electric vibrating screen net 8, enters fine powder hopper 19, then falls on the belt of fine powder ribbon conveyer 9;
Scrap iron block imports iron block hopper 20, then falls on the belt of iron block ribbon conveyer 10;
5, by two band conveyors, respectively fine powder and scrap iron block are transported to respective storing area.
Below the explanation that contrast Fig. 4 carries out:
The electrical control part of the sub-sieve magnetic separation system of described steel scrap, slag comprises:
Engineer station 1, post operation station 2, network line concentrator 16, Programmable Logic Controller 4, master operating station 14, controller slave station 5, oscillating feeder frequency converter 6, belt conveyor frequency converter 7, vibratory sieve batcher frequency converter 8;
Described engineer station 1, post operation station 2, network line concentrator 16, Programmable Logic Controller 4 are connected by ethernet line 3;
Described master operating station 14 is connected with Programmable Logic Controller 4 by control signal wire 10;
Described controller slave station 5, oscillating feeder frequency converter 6, belt conveyor frequency converter 7, vibratory sieve batcher frequency converter 8 are connected with described Programmable Logic Controller 4 by communication bus 9;
Described controller slave station 5 is connected with local operation case 15 by control signal wire 10;
Described oscillating feeder frequency converter 6 is connected with oscillating feeder motor 11 by control signal wire; Described belt conveyor frequency converter 7 is connected with belt conveyor motor 12 by control signal wire; Described vibratory sieve batcher frequency converter 8 is connected with vibratory sieve batcher motor 13 by control signal wire;
Described oscillating feeder motor 11 is the drive motors of described frequency conversion type electromagnetic vibration feeder 4; Described belt conveyor motor 12 is the drive motors of described band conveyor 5; Described vibratory sieve batcher motor 13 is the drive motors of described electric vibrating screen net 8.
Described network line concentrator is HUB hub.
Technique scheme achieve whole system control based on network, adopt the programming Control of PLC programmable controller and the VFC of motor, to meet the requirement of different operating requirement, the speed governing of friction speed continuous stepless.Achieve the requirement of the accuracy of control, Concentrate bid and auto-control.
Above by reference to the accompanying drawings to invention has been exemplary description; obvious specific implementation of the present invention is not subject to the restrictions described above; as long as have employed the improvement of the various unsubstantialities that method of the present invention is conceived and technical scheme is carried out; or design of the present invention and technical scheme directly applied to other occasion, all within protection scope of the present invention without to improve.

Claims (3)

1. a sub-sieve magnetic separation system for steel scrap, slag, is characterized in that:
The sub-sieve magnetic separation system of described steel scrap, slag comprises mixture hopper (3); Establish high-efficiency vibration diagrid (1) in the top of the upper opening of described mixture hopper (3), frequency conversion type electromagnetic vibration feeder (4) and band conveyor (5) are established in the below of the leakage material mouth of its underpart; Described band conveyor (5) is obliquely installed, and lower one end is positioned at the below of described frequency conversion type electromagnetic vibration feeder (4), and higher one end adopts adjustable magnetic-core type permanent magnetic pulley (6); Establish current divider (7) in the below of described adjustable magnetic-core type permanent magnetic pulley (6), described current divider (7) is two funnels, and one of them is fine powder, iron block funnel, and another is nonmetal funnel; Electric vibrating screen net (8) is established in the below of described fine powder, iron block funnel;
Described electric vibrating screen net (8) is obliquely installed; Fine powder hopper (19) is established, below the outside, side that described electric vibrating screen net (8) is lower, if iron block hopper (20) in the below of described electric vibrating screen net (8);
Fine powder ribbon conveyer (9) is established in the below of described fine powder hopper (19); Iron block ribbon conveyer (10) is established in the below of described iron block hopper (20);
Outside described mixture hopper (3) upper opening, if discharging opening (2), jaw crusher (16) is established in the below of described discharging opening (2); The side of described mixture hopper (3), if belt-type cycle feeder (18), described belt-type cycle feeder (18) is for being obliquely installed, the below of described jaw crusher (16), by hopper by mass transport to the lower one end of described belt-type cycle feeder (18), one end that described belt-type cycle feeder (18) is higher, by hopper by mass transport to material inlet belt conveyor (17); The discharge end of described material inlet belt conveyor (17), is located at the top of described high-efficiency vibration diagrid (1);
Described mixture hopper (3) is arranged on steel structure frame (11); And multiple compressed spring type damper (12) is arranged between described steel structure frame (11) and the bearing-surface of mixture hopper (3);
Described frequency conversion type electromagnetic vibration feeder (4) is arranged on described steel structure frame (11) by multiple Extension Spring-type damper (13);
The leakage material mouth of the bottom of described mixture hopper (3), if manual platform gate (15);
One end that described band conveyor (5) is lower, if regulate screw mandrel (14), is connected with the cylinder of band conveyor (5).
2. according to the sub-sieve magnetic separation system of steel scrap according to claim 1, slag, it is characterized in that: the electrical control part of the sub-sieve magnetic separation system of described steel scrap, slag comprises:
Engineer station (1), post operation station (2), network line concentrator (16), Programmable Logic Controller (4), master operating station (14), controller slave station (5), oscillating feeder frequency converter (6), belt conveyor frequency converter (7), vibratory sieve batcher frequency converter (8);
Described engineer station (1), post operation station (2), network line concentrator (16), Programmable Logic Controller (4) are connected by ethernet line (3);
Described master operating station (14) is connected with Programmable Logic Controller (4) by control signal wire (10);
Described controller slave station (5), oscillating feeder frequency converter (6), belt conveyor frequency converter (7), vibratory sieve batcher frequency converter (8) are connected with described Programmable Logic Controller (4) by communication bus (9);
Described controller slave station (5) is connected with local operation case (15) by control signal wire (10);
Described oscillating feeder frequency converter (6) is connected with oscillating feeder motor (11) by control signal wire; Described belt conveyor frequency converter (7) is connected with belt conveyor motor (12) by control signal wire; Described vibratory sieve batcher frequency converter (8) is connected with vibratory sieve batcher motor (13) by control signal wire;
Described oscillating feeder motor (11) is the drive motors of described frequency conversion type electromagnetic vibration feeder (4); Described belt conveyor motor (12) is the drive motors of described band conveyor (5); Described vibratory sieve batcher motor (13) is the drive motors of described electric vibrating screen net (8).
3. a sub-sieve magnetic selection method for the sub-sieve magnetic separation system of steel scrap, slag, the sub-sieve magnetic separation system of described steel scrap, slag comprises mixture hopper (3); Establish high-efficiency vibration diagrid (1) in the top of the upper opening of described mixture hopper (3), frequency conversion type electromagnetic vibration feeder (4) and band conveyor (5) are established in the below of the leakage material mouth of its underpart; Described band conveyor (5) is obliquely installed, and lower one end is positioned at the below of described frequency conversion type electromagnetic vibration feeder (4), and higher one end adopts adjustable magnetic-core type permanent magnetic pulley (6); Establish current divider (7) in the below of described adjustable magnetic-core type permanent magnetic pulley (6), described current divider (7) is two funnels, and one of them is fine powder, iron block funnel, and another is nonmetal funnel; Electric vibrating screen net (8) is established in the below of described fine powder, iron block funnel;
Described electric vibrating screen net (8) is obliquely installed; Fine powder hopper (19) is established, below the outside, side that described electric vibrating screen net (8) is lower, if iron block hopper (20) in the below of described electric vibrating screen net (8);
Fine powder ribbon conveyer (9) is established in the below of described fine powder hopper (19); Iron block ribbon conveyer (10) is established in the below of described iron block hopper (20);
Outside described mixture hopper (3) upper opening, if discharging opening (2), jaw crusher (16) is established in the below of described discharging opening (2); The side of described mixture hopper (3), if belt-type cycle feeder (18), described belt-type cycle feeder (18) is for being obliquely installed, the below of described jaw crusher (16), by hopper by mass transport to the lower one end of described belt-type cycle feeder (18), one end that described belt-type cycle feeder (18) is higher, by hopper by mass transport to material inlet belt conveyor (17); The discharge end of described material inlet belt conveyor (17), is located at the top of described high-efficiency vibration diagrid (1);
It is characterized in that:
The process of described sub-sieve magnetic selection method is:
1), by mixture by material inlet belt conveyor (17) or feed leakage bucket, be transported to high-efficiency vibration diagrid (1), by screening, the mixture of diameter≤200mm leaked into mixture hopper (3); The bulk mixture of diameter >=200mm is sent to jaw crusher (16) broken by discharging opening (2), return high-efficiency vibration diagrid (1) by belt-type cycle feeder (18) again, enter mixture hopper (3);
2), by frequency conversion type electric vibrating feeder (4) and adjustment type buffer, control delivery rate and feeding coal, make compound be layered on band conveyor (5) equably;
By the THICKNESS CONTROL of the compound on belt within 10mm; Regulated the rotating speed of belt roller by frequency control, the linear velocity that the belt roller of band conveyor (5) rotates is adjusted to 300mm/s ~ 500mm/s;
3), when compound arrives the position of adjustable magnetic-core type permanent magnetic pulley (6), by regulating the magnetic flux of its magnetic core, reach best magnetic separation position, by the current divider (7) of adjustable magnetic-core type permanent magnetic pulley (6) below, by iron-holder 40% (quality) and above fine powder, scrap iron block, shunt with nonmetallic substance;
4), by electric vibrating screen net (8), fine powder is separated with scrap iron block again;
Fine powder, by the eyelet of electric vibrating screen net (8), enters fine powder hopper (19), then falls on the belt of fine powder ribbon conveyer (9);
Scrap iron block imports iron block hopper (20), then falls on the belt of iron block ribbon conveyer (10);
5), by two band conveyors, respectively fine powder and scrap iron block are transported to respective storing area.
CN201210292115.3A 2012-08-16 2012-08-16 Screening and magnetic separation system for waste steel and steel slag and screening and magnetic separation method thereof Active CN102806143B (en)

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CN111604254B (en) * 2020-06-04 2022-05-06 欧冶链金再生资源有限公司 Broken steel scrap impurity divides and steel scrap sampling device just
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