Carbon black magnetic separation device

Abstract

The present invention discloses a carbon black magnetic separation device. The carbon black magnetic separation device comprises an exciter, a vibrating bed and a magnetic separation assembly; the exciter is connected to the vibrating bed, and is used to drive the vibrating bed to vibrate; the vibrating bed comprises a flattening and vibrating section and a magnetic separation section in sequence along the material movement direction; the magnetic separation assembly is suspended above the magnetic separation section, and is used to magnetically separate the waste steel wire debris in the carbon black passing through the magnetic separation section; at least one material flattening piece is arranged on the vibrating bed, and the material flattening piece comprises a base, and the bottom surface of the base is a plane; the view from the front to the back of the upper surface of the base is "V"-shaped, and the angle α of the "V" shape is 120 to 179°; the angle β between the upper surface and the bottom surface is 5 to 20°; a corrugated plate is arranged on the base, and the corrugated plate is multi-stage serrated. The carbon black magnetic separation device of the present invention improves the screening rate of steel wire debris, improves the recovery rate of pyrolytic carbon black, and reduces the generation of dust and secondary pollution to the environment.

Description

Technical Field

[0001] The invention relates to a carbon black magnetic separation device. Background Art

[0002] Waste rubber tires are industrial hazardous solid wastes, which are one of the hazardous wastes that deteriorate the natural environment, destroy vegetation growth, affect human health, and endanger the earth's ecological environment. Waste rubber tires have strong heat and mechanical resistance. Long-term open-air stacking not only occupies a large amount of land, but also easily breeds mosquitoes and infectious diseases. Under suitable temperature and dry climate conditions, it is very easy to spontaneously combust and cause fires.

[0003] The harmless treatment and resource utilization of waste rubber tires is an important measure and means to reduce environmental pollution, maintain ecological balance, and safeguard human health. At present, the main ways to process and utilize waste rubber tires in my country are: simple prototype utilization, tire retreading, providing energy as fuel, and extracting valuable chemical products after thermal cracking. Pyrolysis of waste rubber tires to produce gasoline, diesel and pyrolytic carbon black is one of the effective methods for the harmless treatment and resource utilization of waste rubber tires. Pyrolytic carbon black from waste rubber tires is one of the main additives in the production of rubber products and tires. It has a very wide social demand and is one of the important development directions for the harmless treatment and resource utilization of waste rubber tires.

[0004] Since there are 5% to 8% steel wire debris inside the pyrolytic carbon black of waste rubber tires, the recycling of pyrolytic carbon black of waste rubber tires is seriously affected. The density of pyrolytic carbon black is only 0.35 to 0.45 tons / cubic meter, and it exists in the form of powder or fine particles of about 15 to 35 meshes. The waste steel wire debris is usually wrapped in the fine particles of pyrolytic carbon black, so it is difficult to separate the waste steel wire and debris in the pyrolytic carbon black. Using conventional separation methods, the waste steel wire debris wrapped in fine particles of carbon black will be separated together with the carbon black particles, resulting in a huge waste of carbon black, and a large amount of dust will also be generated, causing secondary pollution to the environment. Summary of the invention

[0005] The technical problem solved by the present invention is to overcome the defects of the existing carbon black magnetic separation device in that the steel wire debris screening rate is not high, the carbon black particles and steel wire debris are separated together, resulting in great waste, and a large amount of dust is generated, causing secondary pollution to the environment, and a carbon black magnetic separation device is provided. The carbon black magnetic separation device of the present invention greatly improves the screening rate of steel wire debris, while improving the recycling rate of pyrolytic carbon black, reducing the generation of dust and secondary pollution to the environment.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] The present invention provides a carbon black magnetic separation device, which comprises an exciter, a vibrating bed and a magnetic separation component; the exciter is connected to the vibrating bed to drive the vibrating bed to vibrate;

[0008] The vibrating bed includes a paving and vibration crushing section and a magnetic separation section in sequence along the material movement direction;

[0009] The magnetic separation assembly is suspended above the magnetic separation section and is used for magnetically separating waste steel wire fragments in the carbon black passing through the magnetic separation section;

[0010] In the direction of material movement, at least one material flattening member is arranged on the vibration bed, and the material flattening member includes a base, and the bottom surface of the base is a plane; the direction from front to back of the base is the direction of material movement; the view from front to back of the upper surface of the base is a "V" shape, and the angle α of the "V" shape is 120-179°; the angle β between the upper surface and the bottom surface is 5-20°;

[0011] A corrugated plate is provided on the upper surface of the base, and the corrugated plate is in a multi-stage sawtooth shape in the direction from front to rear and in the direction from left to right.

[0012] The bottom surface of the base is a plane, so that the bottom surface of the entire material leveling piece can contact and be fixedly connected with the bed surface of the vibrating bed, ensuring that the carbon black passes over the material leveling piece instead of passing through the bottom of the base, thereby achieving the effect of leveling the material.

[0013] The upper surface of the base is "V" shaped when viewed from front to back, that is, the middle feed end is low and the discharge ends on both sides are high, so that the material can be dispersed from the middle feed end to the discharge ends on both sides during the vibration of the vibrating bed, thereby achieving a paving effect.

[0014] The inventor found in the study that when the angle between the upper surface and the bottom surface of the base is 5-20 degrees, a better paving effect can be achieved. If the angle between the upper surface and the bottom surface is too large, the material cannot pass over; if the angle is too small, the material is prone to backflow.

[0015] A corrugated plate is provided on the upper surface of the base, which is multi-level serrated from front to back and from left to right, which can enhance the flattening effect of the material and at the same time enable the material to be crushed during the vibration process, thereby exposing the steel wire debris wrapped inside and improving the screening rate of the steel wire debris.

[0016] In the present invention, the angle α is preferably 150-175°, more preferably 160-175°, for example 170°.

[0017] In the present invention, the β is preferably 8 to 15°.

[0018] In the present invention, the distance between the highest point of the "V" shape and the bottom surface is preferably 6 to 14 mm, more preferably 8 to 12 mm, and even more preferably 10 mm.

[0019] When the distance between the highest point of the "V" shape and the bottom surface is within the above range, a better material leveling effect can be achieved, and the material can smoothly pass over the material leveling piece.

[0020] In the present invention, the distance between the lowest point of the "V" shape and the bottom surface is preferably 0 to 5 mm, more preferably 0 to 3 mm, such as 1 mm or 2 mm.

[0021] The smaller the distance between the lowest point of the "V" shape and the bottom surface is, the better. However, considering the convenience of processing and welding, it is better to be as described above.

[0022] In the present invention, the width of the base is preferably 40 to 60 mm, more preferably 45 to 55 mm, for example, 50 mm, and the width is the dimension of the base in the front-to-back direction.

[0023] The width of the base can achieve a better paving effect for the material and enable the material to pass smoothly through the material paving piece.

[0024] In the present invention, preferably, the length of the base is the same as the width of the vibration bed, the length of the base is the size of the base from left to right, and the width of the vibration bed is the size of the vibration bed from left to right.

[0025] The length of the base is the same as the width of the vibration bed, which can more effectively utilize the bed surface of the vibration bed; on the other hand, it can ensure that all carbon black materials pass over the upper surface of the material paving piece, thereby improving the paving and targeting effects.

[0026] In the present invention, in the direction from front to back, the width of each level of the saw teeth is preferably 6 to 10 mm, more preferably 8 mm.

[0027] In the present invention, in the direction from left to right, the length of each level of the sawtooth is preferably 20 to 30 mm; more preferably, when the particle size of the carbon black is not greater than 5 mm, the length of each level of the sawtooth is 20 to 25 mm; when the particle size of the carbon black is 5 to 10 mm, the length of each level of the sawtooth is 25 to 30 mm.

[0028] The optimized conditions of the length and width of each stage of saw teeth can achieve better flattening and vibration effects on the carbon black material.

[0029] In the present invention, preferably, the multi-level serrations from front to rear and the multi-level serrations from left to right form a plurality of flattening units, and each of the flattening units is raised at the diagonal line, and the diagonal line refers to the diagonal line from front to rear and from the middle of the base to both sides of each of the flattening units.

[0030] The diagonal lines of the paving unit are raised, which is more conducive to the vibration and crushing of carbon black particles.

[0031] In the present invention, the spacing between two adjacent material paving pieces is preferably 40 to 50 times, more preferably 43 to 47 times, the amplitude of the vibrating bed, and the spacing refers to the distance between the highest points of two adjacent material paving pieces.

[0032] In the present invention, preferably, dampers are provided at the tops of the four corners of the vibrating bed.

[0033] The setting of the damper can make the vibration bed run more stably.

[0034] In the present invention, preferably, the carbon black magnetic separation device also includes a frame, and the frame is used to fix the vibrating bed and the magnetic separation component.

[0035] The setting of the frame can make the vibrating bed a certain distance away from the ground, so as to be more convenient to operate, and at the same time can fix the magnetic separation components.

[0036] In the present invention, preferably, a discharge port and a waste port are sequentially arranged on the magnetic separation section along the material movement direction.

[0037] The setting of the discharge port can make it easier to collect the carbon black after magnetic separation.

[0038] The waste port is provided so that the steel wire debris adsorbed on the magnetic separation component can fall into the waste port, thereby being more convenient for collection.

[0039] In the present invention, preferably, a feed port is provided above the paving and vibrating section.

[0040] The setting of the feed port can make the feeding process of carbon black more convenient.

[0041] In the present invention, preferably, the vibration exciter is connected to the vibration bed via high-strength bolts.

[0042] The high-strength bolts can transmit the exciting force generated by the exciter to the vibration bed, so that the vibration bed vibrates, and can also protect the exciter.

[0043] In the present invention, the magnetic separation assembly can be conventional in the art, generally including a drum, a belt and a magnetic block. The drum rotates to drive the belt to reciprocate, and the magnetic block is used to provide magnetic force to adsorb the steel wire debris onto the belt.

[0044] When the steel wire fragments are adsorbed onto the belt and brought to the top of the waste opening, the magnetic force of the magnetic block weakens, and the steel wire fragments fall from the belt into the waste opening for collection.

[0045] Wherein, the magnetic field strength provided by the magnetic block is preferably 0.7-0.9T.

[0046] Wherein, the position of the magnetic block is preferably 70-100 mm away from the waste opening.

[0047] On the basis of being in accordance with the common sense in the art, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0048] The positive and progressive effects of the present invention are:

[0049] (1) The pyrolytic carbon black magnetic separation device provided by the present invention has a simple structure and low production cost;

[0050] (2) It can significantly improve the screening rate of waste steel wire debris in pyrolytic carbon black, and the screening rate of waste steel wire debris can be as high as 99%;

[0051] (3) The recycling rate of pyrolytic carbon black is improved, while reducing the generation of dust and secondary pollution to the environment;

[0052] (4) The pre-crushing of carbon black particles is achieved. After separation, the average particle size of the carbon black particles can be reduced from 12 to 20 meshes to 30 to 40 meshes, thereby reducing the energy consumption of the subsequent grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0053] Figure 1 This is a structural schematic diagram of the carbon black magnetic separation device of Example 1;

[0054] Figure 2 This is a schematic diagram of the three-dimensional structure of the material paving piece of Example 1;

[0055] Figure 3 This is a schematic diagram of the planar structure of the material paving piece of Example 1;

[0056] Figure 4 This is an application flow chart of the carbon black magnetic separation device of Example 1.

[0057] Reference numerals

[0058] 1-exciter; 2-vibrating bed; 21-leveling and vibration-breaking section; 22-magnetic separation section; 3-magnetic separation assembly; 4-material leveling piece; 41-base; 42-corrugated plate; 43-leveling unit; 431-diagonal line; 5-damper; 6-discharge port; 7-waste port; 8-feed port; 9-frame; 10-hot air furnace; 11-pyrolysis reactor; 12-feeder; 13-feeding machine; 14-first-stage water-cooled discharger; 15-second-stage water-cooled discharger ; 16-Carbon black magnetic separation device; 17-Suction hood; 18-Air accelerator; 19-Vibrating bed discharge rotary valve; 20-Wire debris collector; 21-Carbon black storage tank; 22-Dust collector; 23-Carbon black storage tank discharge rotary valve; 24-Negative pressure fan; 25-Muffler; L-Length of base; W-Width of base; L1-Length of sawtooth; L2-Width of sawtooth; α-Angle of "V" shape; β-Angle between upper surface and bottom surface; X-spacing. DETAILED DESCRIPTION

[0059] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples. The experimental methods in the following examples without specifying specific conditions are carried out according to conventional methods and conditions, or selected according to the product specifications.

[0060] Example 1

[0061] like Figure 1 In the carbon black magnetic separation device shown, the vibrator 1 is connected to the vibrating bed 2, which is used to drive the vibrating bed 2 to vibrate. The vibrating bed 2 includes a flattening and vibrating section 21 and a magnetic separation section 22 in the material movement direction. The magnetic separation component 3 is suspended above the magnetic separation section 22 and is used to magnetically separate the waste steel wire fragments in the carbon black passing through the magnetic separation section 22. In the material movement direction, a plurality of material flattening parts 4 are arranged on the vibrating bed 2. The structure of the material flattening parts 4 is shown in FIG. Figure 2 and Figure 3 shown.

[0062] The material paving member includes a base 41, the bottom surface of the base 41 is a plane; the direction from front to back of the base is the material movement direction; the upper surface of the base 41 is a "V" shape when viewed from front to back, and the angle α of the "V" shape is 170°; the angle β between the upper surface and the bottom surface is 10°;

[0063] The base 41 is provided with a corrugated plate 42, which is multi-stage sawtooth in the direction from front to back and from left to right. In the direction from front to back, the width L2 of the sawtooth is 8mm, and in the direction from left to right, the length L1 of the sawtooth is 25mm.

[0064] The multi-level saw teeth from front to back and the multi-level saw teeth from left to right form a plurality of flattening units 43 , and the diagonal line 431 of each flattening unit 43 is raised.

[0065] The distance X between two adjacent material paving pieces 4 is 45 times the amplitude of the vibrating bed 2 .

[0066] The frame 9 is used to support the vibration bed 2 and fix the magnetic separation component 3. A damper 5 is provided at each of the four corners of the vibration bed 2, and the damper 5 is suspended on the frame 9. A feed port 8 is provided above the front end of the paving and vibration crushing section, and the material enters the paving and vibration crushing section through the feed port 8. A discharge port 6 and a waste port 7 are provided at the rear end of the magnetic separation section in sequence, and the carbon black after magnetic separation is discharged from the discharge port 6 and collected, and the steel wire debris adsorbed on the magnetic separation component 3 falls into the waste port 7 above the waste port 7 due to the weakening of the magnetic force and is collected.

[0067] Example 2

[0068] like Figure 4 The application process of the carbon black magnetic separation device 16 shown in the figure. The waste rubber tires are fed into the feeder 13 through the feeder 12, and the feeder 13 throws the waste rubber tires into the pyrolysis reactor 11. The pyrolysis reactor 11 is heated by hot air delivered by the hot air furnace 10. The waste rubber tires undergo a thermal cracking reaction in the pyrolysis reactor 11 to generate pyrolysis oil gas and pyrolysis carbon black. The pyrolysis oil gas is cooled by a condensing device to generate pyrolysis oil, and the pyrolysis carbon black containing 5-8% of waste steel wire scraps is continuously and quantitatively transported to the carbon black magnetic separation device 16 through the first-level water-cooled discharger 14 and the second-level water-cooled discharger 15 in sequence. After being flattened, vibrated and magnetically separated by the carbon black magnetic separation device 16, the waste steel wire scraps and carbon black particles are separated. The waste steel wire scraps are sent to the waste steel wire scrap collector 20, and the pure pyrolytic carbon black after magnetic separation is sent to the finished carbon black storage tank 21 by the negative pressure pneumatic conveying system through the vibrating bed discharge rotary valve 19, wherein the negative pressure pneumatic conveying system includes a suction hood 17 and an air accelerator 18. The pure pyrolytic carbon black in the carbon black storage tank 21 can flow out through the carbon black storage tank discharge rotary valve 23. A dust collector 22 is connected above the carbon black storage tank 21, and the dust collector 22 is provided with a pulse air source of 6MPa by a negative pressure fan 24. In order to reduce the noise of the negative pressure fan 22, the negative pressure fan 22 is also connected to a muffler 25.

[0069] The steel wire debris screening rate in the pyrolytic carbon black is greater than 99%, the average particle size of the carbon black particles is reduced from 12 to 20 meshes to 30 to 40 meshes, the carbon black particles are initially broken, and the energy consumption of the subsequent grinding process is reduced.

Claims

1. A carbon black magnetic separation device, It is characterized in that It includes a vibrator, a vibrating bed and a magnetic separation component; the vibrator is connected to the vibrating bed to drive the vibrating bed to vibrate; The vibrating bed includes a paving and vibration crushing section and a magnetic separation section in sequence along the material movement direction; The magnetic separation assembly is suspended above the magnetic separation section and is used for magnetically separating waste steel wire fragments in the carbon black passing through the magnetic separation section; In the direction of material movement, at least one material flattening piece is arranged on the vibration bed, and the material flattening piece includes a base, and the bottom surface of the base is a plane; the direction from front to back of the base is the direction of material movement; the view from front to back of the upper surface of the base is a "V" shape, and the angle α of the "V" shape is 120-179°; the angle β between the upper surface and the bottom surface is 5-20°; The base is provided with a corrugated plate, and the corrugated plate is multi-level sawtooth in the direction from front to back and from left to right; The multi-level sawtooth in the direction from front to back and the multi-level sawtooth in the direction from left to right form a plurality of flattening units, and each of the flattening units is raised at the diagonal line. The diagonal line refers to the diagonal line from front to back and from the middle of the base to both sides of each flattening unit.

2. The carbon black magnetic separation device according to claim 1, It is characterized in that The α is 150-175°; And / or, the β is 8-12°.

3. The carbon black magnetic separation device according to claim 2, It is characterized in that The α is 160-175°.

4. The carbon black magnetic separation device according to claim 3, It is characterized in that The α is 170°.

5. The carbon black magnetic separation device according to claim 1, It is characterized in that The distance D1 between the highest point of the "V" shape and the bottom surface is 6 to 14 mm; and / or, the distance D2 between the lowest point of the "V" shape and the bottom surface is 0 to 5 mm; And / or, the width W of the base is 40-60 mm, and the width W is the dimension of the base in the front-to-rear direction.

6. The carbon black magnetic separation device according to claim 5, It is characterized in that The distance D1 between the highest point of the "V" shape and the bottom surface is 8 to 12 mm.

7. The carbon black magnetic separation device according to claim 6, It is characterized in that The distance D1 between the highest point of the "V" shape and the bottom surface is 10 mm.

8. The carbon black magnetic separation device according to claim 5, It is characterized in that The distance D2 between the lowest point of the "V" shape and the bottom surface is 0 to 3 mm.

9. The carbon black magnetic separation device according to claim 8, It is characterized in that The distance D2 between the lowest point of the "V" shape and the bottom surface is 1 mm or 2 mm.

10. The carbon black magnetic separation device according to claim 5, It is characterized in that The width W of the base is 45-55 mm.

11. The carbon black magnetic separation device according to claim 10, It is characterized in that The width W of the base is 50 mm.

12. The carbon black magnetic separation device according to claim 1, It is characterized in that The length L of the base is the same as the width of the vibration bed. The length L of the base is the size of the base from left to right, and the width of the vibration bed is the size of the vibration bed from left to right.

13. The carbon black magnetic separation device according to claim 1, It is characterized in that In the direction from front to back, the width L2 of each level of the saw teeth is 6 to 10 mm; And / or, in the direction from left to right, the length L1 of each level of the saw teeth is 20 to 30 mm.

14. The carbon black magnetic separation device according to claim 13, It is characterized in that The width L2 of the saw teeth at each level is 8 mm.

15. The carbon black magnetic separation device according to claim 1, It is characterized in that The distance X between two adjacent material paving pieces is 40 to 50 times the amplitude of the vibration bed.

16. The carbon black magnetic separation device according to claim 1, It is characterized in that The distance X between two adjacent material paving pieces is 43 to 47 times the amplitude of the vibration bed.

17. The carbon black magnetic separation device according to claim 1, It is characterized in that Dampers are arranged on the tops of the four corners of the vibration bed.

18. The carbon black magnetic separation device according to claim 1, It is characterized in that The carbon black magnetic separation device also includes a frame, which is used to fix the vibrating bed and the magnetic separation component.

19. The carbon black magnetic separation device according to claim 1, It is characterized in that The magnetic separation section is provided with a discharge port and a waste port in sequence along the material movement direction; And / or, a feed inlet is arranged above the paving and vibrating section.

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