CN113117595A - Carbon black wet process circulation granulation system - Google Patents
Carbon black wet process circulation granulation system Download PDFInfo
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- CN113117595A CN113117595A CN201911395021.7A CN201911395021A CN113117595A CN 113117595 A CN113117595 A CN 113117595A CN 201911395021 A CN201911395021 A CN 201911395021A CN 113117595 A CN113117595 A CN 113117595A
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- 239000006229 carbon black Substances 0.000 title claims abstract description 106
- 238000005469 granulation Methods 0.000 title claims abstract description 43
- 230000003179 granulation Effects 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title abstract description 47
- 230000008569 process Effects 0.000 title abstract description 33
- 239000007788 liquid Substances 0.000 claims abstract description 46
- 238000012216 screening Methods 0.000 claims abstract description 34
- 238000005507 spraying Methods 0.000 claims abstract description 28
- 230000007246 mechanism Effects 0.000 claims abstract description 25
- 239000000428 dust Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000007873 sieving Methods 0.000 claims abstract description 8
- 238000010408 sweeping Methods 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 21
- 238000007664 blowing Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 7
- 239000004071 soot Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 50
- 239000000843 powder Substances 0.000 abstract description 34
- 238000005550 wet granulation Methods 0.000 abstract description 9
- 238000001035 drying Methods 0.000 description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 238000002156 mixing Methods 0.000 description 8
- 238000005453 pelletization Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009736 wetting Methods 0.000 description 4
- 238000010926 purge Methods 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007908 dry granulation Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000008014 freezing Effects 0.000 description 2
- 238000007710 freezing Methods 0.000 description 2
- 239000011361 granulated particle Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000010074 rubber mixing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention discloses a carbon black wet circulating granulation system which comprises a mixer, a wet granulator and a wet screening machine, wherein the wet granulator is respectively connected with the mixer and the wet screening machine; a liquid inlet is formed in the mixer and connected with a liquid spraying system, and a stirring tooth rotating shaft is arranged in the mixer; the wet sieving machine is provided with a steam heat tracing pipe outside, a sweeping mechanism on the top and a dust collection mechanism inside. According to the invention, by adding a premixing process before wet granulation and improving a liquid spraying system of a wet granulator, the carbon black powder is quickly wetted and uniformly mixed, the workload of the wet granulator is reduced, the generation of carbon black fine powder and large-particle carbon black is reduced, and the rate of certified products of the wet granulator is improved; meanwhile, a wet screening machine is additionally arranged behind the wet granulating machine, so that circulation of wet granulating of the carbon black is realized, and the load of rear equipment is reduced.
Description
Technical Field
The invention relates to a system for carbon black wet-process circulating granulation, and belongs to the technical field of carbon black powder granulation.
Background
In the production process of the carbon black, the carbon black separated by the collecting system is loose powder, the specific gravity is 0.03-0.1 g/ml, the fluidity is very poor, the carbon black is very easy to fly, and the carbon black is very easy to adhere to the inner wall of an iron container in the transportation and storage processes. This not only brings great difficulty to transportation and storage, but also pollutes the environment in the rubber mixing process, and harms the health of operators. Therefore, in order to facilitate transportation and use and reduce pollution to transportation means and working environment, carbon black is granulated except that it can be sold as powdered carbon black after being separately packaged or compressed for special use. There are two methods for pelletizing carbon black, namely dry pelletizing and wet pelletizing. The dry granulation is mainly based on Van der Waals force between carbon black powder bodies, granulation is carried out through continuous rolling contact in a roller granulator, the granulation process is long, the efficiency is low, the fine powder content is high, the particle strength is low, the influence on the environment is caused, and the dry granulation is gradually eliminated. The wet granulation technique is introduced into China in eighty years, and flocculent carbon black raw fine powder and an aqueous solution containing a certain proportion of a binder are subjected to high-speed rotation of stirring teeth on a stirring tooth shaft in a special granulator to fully mix carbon black and granulation water to form particles, and then the particles are dried to remove contained water.
The current wet granulation process is as follows: the powdered carbon black from upstream feeding screw conveyer is fed into the barrel of wet granulating machine, and mixed with adhesive (granulating liquid) with a certain pressure and sprayed from spray gun on the barrel of wet granulating machine by means of high-speed rotation of stirring teeth
The mixture is rolled, extruded and sheared under the high-speed rotation of the stirring teeth of the granulator, and the particles are formed by continuous mutual collision
And (4) granulating to complete granulation. The water content of the wet carbon black particles after granulation is about 50 percent, and then the wet carbon black particles enter a drying system at the downstream of the process for granulation
The particles are dried. Although the process has short, compact and high efficiency, the following problems exist:
(1) after wet granulation, about 10% of the carbon black particles do not meet the particle size requirement: wherein a part is
The carbon black fine powder which is not uniformly mixed and the carbon black having large particle size which is too large are used as the other part. The two parts are taken together with carbon black certified particles
And (5) entering a drying system for drying. This, on the one hand, entails a load on the drying system, consuming too much drying heat
Energy waste is caused; on the other hand, in order to ensure the quality of the qualified particulate carbon black, a dry screening system must be provided in the process after drying to remove the undesirable carbon black. The substandard carbon black particles will then be returned to the upstream process of the pelletizing system for re-pelletizing. Because the material returning process flow is too long, the loads of process equipment and process pipelines flowing along the way are too large.
2) The wet granulator not only needs to meet the requirements of the mixing stage, but also needs to meet the requirements of the granulating stage, and the mixing stage is too short, so that the uniform mixing requirement cannot be met. This results in excessive carbon black fines and large particle carbon black, especially fines which can easily cause plugging of piping equipment and process interruptions.
(3) Although the wet granulator can control the particle size in a certain range by adjusting the rotating speed, the range is limited, and the optimal working performance point cannot be guaranteed after adjustment, the particles are uneven and different in size, and the quality product rate is reduced, so that more carbon black which does not meet the particle size requirement is converged into the subsequent process operation, the pipeline load of subsequent equipment is increased, and waste is caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a carbon black wet-process circulating granulation system and a carbon black wet-process circulating granulation method, which realize the quick wetting and uniform mixing of carbon black powder by increasing the premixing process before wet-process granulation and the improvement of a liquid spraying system of a wet-process granulator, reduce the workload of the wet-process granulator, reduce the generation of carbon black fine powder and large-particle carbon black and improve the rate of certified products of the wet-process granulator; meanwhile, a wet screening machine is additionally arranged behind a wet granulator, qualified granulated carbon black products are screened out and then enter a subsequent drying process, unqualified carbon black fine powder and large-particle carbon black are returned to the granulator for granulation again, circulation of wet granulation of the carbon black is realized, qualified carbon black particles entering a rear drying process are guaranteed, fine powder and large particles do not exist, the screening process after subsequent drying can be eliminated, and the load of rear equipment, particularly the load of a dryer, is reduced.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
a carbon black wet circulating granulation system comprises a wet granulator, wherein a feed port of the wet granulator is connected with a discharge port of a mixer, the discharge port of the wet granulator is connected with an airtight valve, the airtight valve is connected with a feed port of a screw feeder, the discharge port of the screw feeder is connected with a feed port of a wet screening machine, a discharge port of an unqualified product of the wet screening machine is connected with a feed port of a return lifter, and the discharge port of the return lifter is connected with a; the mixer is provided with a liquid inlet which is connected with a liquid spraying system, a stirring tooth rotating shaft is arranged in the mixer, stirring teeth on the rotating shaft are spirally arranged, the direction is favorable for discharging materials, and meanwhile, the mixer is also provided with a transmission device which drives the rotating shaft to rotate at a high speed; the wet screening machine is a conventional carbon black cylindrical screen, a steam tracing pipe is arranged outside the wet screening machine and is used for heating the carbon black cylindrical screen and pre-drying carbon black particles inside the wet screening machine, a purging mechanism is arranged at the top of the wet screening machine, a dust suction mechanism is arranged inside the wet screening machine, carbon black fine powder is effectively prevented from blocking screen holes, and continuous and stable production is guaranteed.
Furthermore, in order to reduce the influence of vibration of the equipment, the mixer and the wet granulator are connected through soft connection, and the airtight valve and the discharge port of the wet granulator are connected through soft connection.
Further, a steam tracing jacket is arranged outside the airtight valve to prevent the airtight valve from freezing; the back pressure position is provided with a soot blowing mechanism for cleaning dust in the airtight valve to prevent blockage.
The material returning hoister preferably adopts a metal chain bucket type hoister.
Further, a liquid inlet is formed in the wet granulator and connected with a liquid spraying system; and a rotor of the wet granulator is provided with a liquid spraying mechanism, and the liquid spraying mechanism is connected with a liquid spraying system. Thus, in the granulation process, the granulation liquid is granulated by a wet method
The static part of the granulator is sprayed into the shell, and the rotating part of the granulator enters the rotor, so that the carbon black in the granulator is subjected to dynamic spraying, rapid wetting and mixing are realized, the workload of the wet granulator is reduced, the granulator is more stably operated, carbon black fine powder and large-particle carbon black are reduced, and the rate of certified products of the granulator is guaranteed.
The carbon black wet circulation granulation method of the system comprises the following steps:
(1) a premixing step: powdery dry carbon black from an upstream process is preliminarily mixed with granulating liquid from a liquid spraying system in a mixer, and the liquid content of the premixed carbon black is 15-20%;
(2) and (3) granulating: granulating the premixed carbon black in a wet granulator, wherein the liquid content of the granulated carbon black particles is 45-55%;
(3) screening: and (3) screening the granulated carbon black particles in a wet screening machine, returning the fine powder and the large-particle carbon black into the mixer for re-mixing, and allowing the qualified particles to enter a subsequent drying process.
Thus, the wet granulation of the carbon black forms circulation, realizes the self circulation of the granulation process, and ensures that the carbon black is completely the certified particle carbon black without fine powder and large particles in the rear drying process.
Meanwhile, the granulating liquid is divided into three groups to enter a process system, wherein in the premixing in the step (1), a first group of liquid spraying system is connected with a mixer; in the granulation in the step (2), the second group of liquid spraying systems are connected with the static part of the wet granulator, namely granulation liquid enters from the shell; also in the granulation in the step (2), the third group of granulation systems is connected with the rotating piece of the wet granulator, namely, the granulation liquid enters from the rotor. The granulating liquid of the second and third granulating systems forms a dynamic opposite spraying process for the carbon black, and the carbon black is quickly wetted and mixed.
Compared with the prior art, the invention provides a carbon black wet-process circulating granulation system and a circulating granulation method according to the system, which can realize quick wetting and quick and uniform mixing of carbon black, reduce the possibility of generating fine carbon black powder and large-particle carbon black, reduce the content of the fine carbon black powder in a carbon black quality product, ensure the quality product rate of a granulator, and simultaneously reduce the harm of dust leakage to a great extent due to the reduction of the content of the fine powder, thereby being beneficial to environmental protection. The invention realizes the self circulation of the carbon black process, ensures that the carbon black particles are completely qualified carbon black particles in the rear drying process, has no fine powder and large particles, and reduces the energy consumption of the subsequent drying process of the carbon black. In addition, the invention can change the formula of the granulating liquid according to the physical properties of other media, and increase or decrease the matched equipment to realize the purpose of circulating granulation, so that the invention has wider application.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a process flow diagram for pelletizing according to the system of the present invention.
Illustration of the drawings:
1. a mixer; 2. a liquid spraying system; 3. soft connection; 4. a wet granulating machine; 5. an airtight valve; 6. a screw feeder; 7. a wet sieving machine; 8. a return screw conveyor; 9. a material returning hoister;
11. a powder feeding port; 12. a material returning and feeding port; 13. a stirring gear rotating shaft;
41. a housing; 42. a rotor; 43. a liquid spraying mechanism;
51. a soot blowing mechanism; 52. a steam tracing jacket;
71. a steam tracing pipe; 72. a purging mechanism; 73. a grading adjustment mechanism; 74. a dust suction mechanism; 75. a fine powder outlet;
76. a certified product outlet; 77. a large particle outlet;
81. fine powder is imported; 82. a large particle inlet; 83. A discharge port;
A. powdered carbon black; B. granulating liquid; C. compressing air; D. water vapor; E. condensing water; F. carbon black dust; G. condensing water; H. compressing air; J. qualified carbon black.
Detailed Description
For better understanding of the objects, technical solutions and advantages of the present invention, the following description is provided with reference to the accompanying drawings, but the scope of the present invention is not limited to the following embodiments.
Referring to fig. 1 and 2, the carbon black wet circulating granulation system comprises a mixer 1, a wet granulator 4 and a wet screening machine 7, wherein a feed port of the wet granulator 4 is connected with a discharge port of the mixer 1, a discharge port of the wet granulator 4 is connected with an airtight valve 5, the airtight valve 5 is connected with a feed port of a screw feeder 6, a discharge port of the screw feeder 6 is connected with a feed port of the wet screening machine 7, a discharge port of an unqualified product of the wet screening machine 7 is connected with a feed port of a material returning elevator 9, and a discharge port of the material returning elevator 9 is connected; in order to reduce the influence of vibration of the equipment, the mixer and the wet granulator are connected through soft connections 3, and the airtight valve and the discharge hole of the wet granulator are connected through soft connections 3. The mixer 1 is provided with a powder feeding port 11, a material returning feeding port 12 and a liquid inlet, the liquid inlet is connected with the liquid spraying system 2, a stirring tooth rotating shaft 13 is arranged in the mixer 1, stirring teeth on the rotating shaft are arranged spirally, the direction is favorable for discharging, and meanwhile, the mixer is also provided with a transmission device which drives the rotating shaft to rotate at a high speed; the wet granulator 4 comprises a shell 41 and a rotor 42, wherein a liquid inlet is formed in the shell 41 and is connected with the liquid spraying system 2; the rotor 42 is provided with a liquid spraying mechanism 43, and the liquid spraying mechanism 43 is connected with the liquid spraying system 2. In the granulation process, the granulation liquid B is sprayed from a static part, namely a shell 41, of the wet granulation machine and also enters from a rotating part, namely a rotor 42, of the wet granulation machine, a dynamic opposite spraying process is formed on the carbon black in the granulation machine, the rapid wetting and mixing are realized, the working load of the wet granulation machine is reduced, the granulation machine is enabled to run more stably, the carbon black fine powder and large-particle carbon black are reduced, and the quality index of the granulation machine is ensured;
the wet screening machine 7 is a conventional carbon black cylindrical screen, is provided with a particle size grading adjusting mechanism 73, can be used for grading in screening, and can adjust the particle size of a qualified product, and the preferred particle diameter grading adjusting range is 1-4 mm; a steam tracing pipe 71 is arranged outside and is heated to pre-dry carbon black particles inside so as to prevent the powdery carbon black from absorbing moisture and sticking to the wall; the top is provided with a blowing mechanism 72, and the central rotating screen drum shaft is provided with a dust suction mechanism 74, so that the screen holes are effectively prevented from being blocked by carbon black fine powder, and the continuous and stable production is ensured.
The lower part of the wet sieving machine 7 is sequentially provided with a fine powder outlet 75, a certified product outlet 76 and a large particle outlet 77, wherein the fine powder outlet 75 and the large particle outlet 77 are connected with corresponding inlets of the material returning screw conveyer 8, and the certified product outlet 76 is connected with downstream process equipment through an airtight valve 5.
The material returning screw conveyor 8 is provided with two feed inlets: a fine powder inlet 81 and a large particle inlet 82 which are respectively connected with the fine powder outlet 75 and the large particle outlet 77 of the wet sieving machine 7, and a discharge hole 83 which is connected with the feed inlet of the material returning elevator 9.
The return material hoister 9 is a metal chain bucket type hoister, and an inlet and an outlet of the metal chain bucket type hoister are respectively connected with a discharge hole 83 of the return material return spiral 8 and a return material feed hole 12 of the mixer 1.
The airtight valve 5 is a feeder, and a steam tracing jacket 52 is arranged outside the airtight valve to prevent the airtight valve from freezing; the back pressure is provided with a soot blowing mechanism 51, compressed air is used for blowing soot, the air source pressure is 0.3 MPa-0.6 MPa, dust in the airtight valve is cleaned, blockage is prevented, and wet screening operation can be in a relatively independent environment.
In actual production, powdery carbon black A enters a mixer 1 from a powder feed inlet 11 of the mixer 1, is mixed with granulating liquid B sprayed in a granulating system 2 connected to the mixer 1, is quickly wetted and uniformly mixed under the action of a stirring tooth rotating shaft 13 of the mixer 1, so that the water content of the carbon black is increased to 15-20%, and the premixing process of the carbon black and the granulating liquid is completed; the premixed carbon black is further mixed and granulated with two groups of granulating liquid B from the housing 41 upward-spraying system 2 and the rotor 42 upward-spraying system 2 in a wet granulator 4, so that the water content of the carbon black reaches about 50 percent, and the carbon black granulation process is finished; the granulated carbon black is conveyed to a wet screening machine 7 through an air-tight valve 5 and a screw feeder 6, carbon black particles are screened and graded by a grading regulating mechanism 74 in the wet screening machine 7, qualified carbon black products J meeting the requirements are conveyed to a downstream drying system through the air-tight valve 5, carbon black (returned carbon black: fine powder and large particles) which do not meet the requirements are collected and conveyed to a return material lifting machine 9 through a return material screw conveyor 8, and then the carbon black enters a mixer 1 through a return material feeding port 12 through the lifting and conveying of the lifting machine 9, so that the return material process is completed. The carbon black and the powdered carbon black are returned to the mixer 1 and mixed, and the processes of premixing, granulation and screening are repeated to form a circulating granulation process flow. In order to ensure the stable and smooth process, a compressed air soot blowing and purging system is arranged in the airtight valve 5 and the wet sieving machine 7, and the adhesion of fine carbon black powder is effectively prevented by intermittently blowing compressed air C and H. In order to ensure the stable and smooth technological process, a heat tracing system is arranged in the airtight valve 5 and the wet sieving machine 7, the temperature of the system is raised through water vapor D heat tracing, the adhesion of fine powder carbon black is effectively prevented, the condensate water E after heat tracing is discharged from the airtight valve 5, and the condensate water G is discharged from the wet sieving machine 7. In addition, in order to ensure that the wet screening process is relatively independent and stable, particularly the wet screening process is stable in the blowing process, the wet screening machine 7 is also provided with a dust collection system, and carbon black dust F is sucked out through negative pressure dust collection, so that the screening operation is facilitated.
When the particle size needs to be adjusted, the rotating speed of the rotor 42 of the wet granulator 4 can be adjusted through frequency conversion to control the particle size, and in a certain range, the higher the rotating speed, the smaller the diameter of the granulated particles, and the lower the rotating speed, the larger the diameter of the granulated particles, so that when the optimal particle size meeting the requirements is reached, the screening requirements of the optimal particle size can be met by adjusting the grading adjusting mechanism 73 in the wet screening machine 7.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (6)
1. A carbon black wet cycle granulation system comprises a wet granulator and is characterized in that: the feeding port of the wet granulator is connected with the discharging port of the mixer, the discharging port of the wet granulator is connected with the feeding port of the wet screening machine, the discharging port of the unqualified product of the wet screening machine is connected with the feeding port of the material returning hoister, and the discharging port of the material returning hoister is connected with the feeding port of the mixer; a liquid inlet is formed in the mixer and connected with a liquid spraying system, and a stirring tooth rotating shaft is arranged in the mixer; the wet sieving machine is provided with a steam heat tracing pipe outside, a sweeping mechanism on the top and a dust collection mechanism inside.
2. The carbon black wet cycle granulation system according to claim 1, wherein: the mixer and the wet granulator are connected through flexible connection.
3. The carbon black wet cycle granulation system according to claim 1, wherein: the feeding port of the wet screening machine is connected with the screw feeder, the feeding port of the screw feeder is connected with the airtight valve, and the airtight valve is connected with the discharging port of the wet granulator through flexible connection.
4. The carbon black wet cycle granulation system according to claim 3, wherein: and a steam tracing jacket is arranged outside the airtight valve, and a soot blowing mechanism is arranged at the back pressure position.
5. The carbon black wet cycle granulation system according to claim 1, wherein: the material returning hoister adopts a metal chain bucket type hoister.
6. The carbon black wet cycle granulation system according to claim 1, wherein: the wet granulator is provided with a liquid inlet which is connected with a liquid spraying system; and a rotor of the wet granulator is provided with a liquid spraying mechanism, and the liquid spraying mechanism is connected with a liquid spraying system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395021.7A CN113117595A (en) | 2019-12-30 | 2019-12-30 | Carbon black wet process circulation granulation system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911395021.7A CN113117595A (en) | 2019-12-30 | 2019-12-30 | Carbon black wet process circulation granulation system |
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| CN113117595A true CN113117595A (en) | 2021-07-16 |
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| CN201911395021.7A Withdrawn CN113117595A (en) | 2019-12-30 | 2019-12-30 | Carbon black wet process circulation granulation system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493620A (en) * | 2021-08-04 | 2021-10-12 | 烁元新材料(东营)股份有限公司 | Intelligent granulating device for low-hardness carbon black particles |
| CN115851002A (en) * | 2022-11-03 | 2023-03-28 | 安徽固瑞特新材料科技有限公司 | Wet granulation process for improving intensity of cracked carbon black particles |
-
2019
- 2019-12-30 CN CN201911395021.7A patent/CN113117595A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113493620A (en) * | 2021-08-04 | 2021-10-12 | 烁元新材料(东营)股份有限公司 | Intelligent granulating device for low-hardness carbon black particles |
| CN113493620B (en) * | 2021-08-04 | 2022-07-26 | 烁元新材料(东营)股份有限公司 | Intelligent granulating device for low-hardness carbon black particles |
| CN115851002A (en) * | 2022-11-03 | 2023-03-28 | 安徽固瑞特新材料科技有限公司 | Wet granulation process for improving intensity of cracked carbon black particles |
| CN115851002B (en) * | 2022-11-03 | 2024-05-07 | 安徽固瑞特新材料科技有限公司 | Wet granulation process for improving strength of cracked carbon black particles |
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Application publication date: 20210716 |