CN115672170A - Fluidized bed and method for preparing coated metal material by using same - Google Patents
Fluidized bed and method for preparing coated metal material by using same Download PDFInfo
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- CN115672170A CN115672170A CN202310001198.4A CN202310001198A CN115672170A CN 115672170 A CN115672170 A CN 115672170A CN 202310001198 A CN202310001198 A CN 202310001198A CN 115672170 A CN115672170 A CN 115672170A
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Abstract
The invention discloses a fluidized bed and a method for preparing a coated metal material by using the same, wherein the method for preparing the coated metal material by using the fluidized bed comprises the following steps: s1, preparing a modifying agent and a solvent into a modified solution; s2, starting the fluidized bed, and introducing carrier gas into the reaction tank body from the bottom through an air inlet pipeline; s3, spraying the metal powder to be modified into the reaction tank body through a jet powder pump, and keeping the sprayed metal powder in a fluidized state under the action of a fluidized bed; s4, starting a motor and a heating device, starting an atomizing nozzle, spraying a modified solution atomized by the atomizing nozzle, and coating the metal powder to be modified with the modified solution; s5, taking out the modified metal powder from the discharge hole. The whole process has no strong friction, stirring and impact on the powder, has no damage to the surface of the metal powder, keeps the original shape of the metal powder and achieves the purpose of good surface modification of the metal powder.
Description
Technical Field
The invention belongs to the technical field of composite material preparation, and relates to a fluidized bed and a method for preparing a coated metal material by using the same.
Background
The metal powder is widely applied to the fields of powder metallurgy, conductive adhesive and conductive slurry, electromagnetic shielding composite materials, heat-conducting coatings, metal paint, new energy and the like, the surface of the metal powder is usually required to be modified when the metal powder is applied in the fields, a layer of organic matter is coated on the surface of the powder to form certain cohesiveness or better compatibility with an organic solvent and a matrix, otherwise, the metal powder is difficult to form a product with required service performance. The traditional industrially used dry powder modification process is mainly aimed at nonmetal mineral powder with low requirements on powder morphology, including high-speed mixing, stirring, ball milling, jet milling and the like, however, when the process is applied to metal powder modification, due to the characteristics of high specific gravity and high hardness or ductility and non-oxidation resistance of the metal powder, the problems of impurity introduction, deformation and oxidation of the metal powder, unsatisfactory coating effect and the like can be caused in the modification process, and the wet stirring modification used in a laboratory has the problems of low modification efficiency, long flow, low utilization rate of a modifier, poor quantification, unstable manual operation and the like, and is not suitable for large-scale continuous production.
Patent CN208800064U discloses a nano titanium dioxide coating device, and patent CN217248226U discloses a fluidized bed spray nano coating device, in both of which titanium dioxide materials are fed through a jet pipe, titanium dioxide powder is dispersed to form a fluidized state through a bottom aeration disc, and stirring is carried out by a stirring paddle to avoid agglomeration and precipitation of the titanium dioxide powder, but in both inventions, a coating agent and a dispersing agent are added through a top end feeding hopper and a dropping funnel, the material addition is inconvenient when the equipment height is higher, the coating agent and the dispersing agent cannot be effectively dispersed without atomization, and the uniform coating of the coating agent and the dispersing agent on the surface of the powder is difficult to ensure.
Disclosure of Invention
In order to overcome the above disadvantages, it is an object of the present invention to provide a fluidized bed and a method for preparing a coated metal material, which modify the surface of a metal powder by a fluidized bed spray coating method.
In order to achieve the above purposes, the invention adopts the technical scheme that: a fluidized bed, comprising a reactor vessel, the fluidized bed further comprising:
the exhaust pipeline is arranged at the middle upper part of the reaction tank body, and a filtering piece is arranged on the exhaust pipeline;
the gas inlet pipeline is arranged at the middle lower part of the reaction tank body and is used for conveying carrier gas into the reaction tank body;
the double-spraying device is arranged on the middle upper portion of the reaction tank body and comprises a jet flow powder pump and an atomizing nozzle, the jet flow powder pump is used for spraying metal powder into the reaction tank body, and the atomizing nozzle can atomize and spray modified solution into the interior of the reaction tank body so that the modified solution is coated on the surface of the metal powder.
In the prior art, the coating agent and the dispersing agent are conveyed to be added through a top charging hopper and a dropping funnel, the materials are inconvenient to add when the equipment height is higher, the coating agent and the dispersing agent cannot be effectively dispersed without atomization, and the uniform coating of the coating agent and the dispersing agent on the surface of powder is difficult to ensure. The invention leads the metal powder to be modified to be in a fluidized state by the fluidized bed technology, and carries out dry modification with high efficiency, stability and less introduced impurities, thereby being more suitable for modifying the metal powder. According to the invention, through the arrangement of the double-spraying device, the metal powder is sprayed into the reaction tank body through the jet powder pump, the modified solution is continuously added through the atomizing nozzle through the pipeline, the material addition is more convenient, the modified solution and the modified powder are more uniformly mixed, the coating effect is better, and the modified metal powder has obvious hydrophilic oleophobic or oleophilic hydrophobic effects.
The exhaust pipeline with the filter piece is arranged at the middle upper part of the reaction tank body, the volatile solvent is discharged through the exhaust pipeline in the metal powder modification process, and the metal powder is dried more quickly.
Further, the double-spraying device is arranged at the top of the reaction tank body.
Further, the fluidized bed also comprises a heating device, wherein the heating device is arranged on the outer surface of the reaction tank body and is abutted against the outer surface of the reaction tank body.
The fluidized bed further comprises a stirring device, wherein the stirring device comprises a motor, a stirring shaft and stirring blades which are sequentially connected, the stirring blades and the stirring shaft are vertically arranged, the motor drives the stirring blades to rotate through the stirring shaft, the stirring blades rotate along with the stirring shaft under the drive of the motor, and the fluidized metal powder and the atomized modification solution are promoted to be uniformly mixed in the modification process; the fluidized bed further comprises a fluidizing plate and a discharge hole, wherein the discharge hole is formed in the bottom of the reaction tank body, and the fluidizing plate is arranged between the stirring device and the discharge hole. After the metal powder is coated, the metal powder is discharged through a discharge hole at the bottom of the tank body, the fluidized bed is more convenient to use, and the aims of uniformly coating the surface of the metal powder by using a modifying solution and modifying the surface of the metal powder by a dry method are fulfilled.
A method for preparing a coated metal material in a fluidized bed, comprising the following steps:
s1, preparing a modifying agent and a solvent into a modified solution;
s2, starting the fluidized bed, and introducing carrier gas into the reaction tank body from the bottom through an air inlet pipeline;
s3, spraying the metal powder to be modified into the reaction tank body through a jet powder pump, and keeping the sprayed metal powder in a fluidized state under the action of a fluidized bed;
s4, starting a motor and a heating device, starting an atomizing nozzle, spraying a modified solution atomized by the atomizing nozzle, and coating the metal powder to be modified with the modified solution;
s5, taking out the modified metal powder from the discharge hole.
Spraying the metal powder into a reaction tank body through a jet flow powder pump, then completely fluidizing in carrier gas to form well-dispersed fluidized powder, simultaneously dissolving a soluble modifier into a volatile solvent, and carrying out atomization and liquid phase spraying through an atomization nozzle. The high surface energy and high activity of the fluidized powder and the atomized solution are utilized, so that the modified solution is quickly and uniformly adsorbed on the surface of the powder, the solvent is quickly volatilized, the surface modification with high process efficiency, uniform coating of the modifier and high material utilization rate can be realized, and the industrialization value is improved; the whole process has no strong friction, stirring and impact on the powder, has no damage to the surface of the metal powder, keeps the original shape of the metal powder and achieves the purpose of good surface modification of the metal powder.
Further, in S1, the solvent is selected from one or more of water, ethanol, acetone and dichloromethane; the modifier is selected from one or more of mercaptan, amino silicone oil KL-08, dibenzylidene sorbitol, ricinoleic acid, oleic acid, linoleic acid, polyvinylpyrrolidone, span series surfactants and tween series surfactants, the concentration of the prepared modified solution is 10-300 g/L, and exemplarily, the concentration of the prepared modified solution is 10 g/L, 50 g/L, 100 g/L, 200 g/L and 300 g/L.
Further, in S1, after the modified solution is prepared, the modified solution is mixed at room temperature and is intensively stirred by a stirring magneton or a stirring paddle at the rotating speed of 100-500 rpm for 10-30 min to be fully and uniformly stirred, and then the modified solution is mixed by ultrasonic oscillation for 5-30 min. Illustratively, the rotation speed of the stirring magneton or the stirring paddle is 100 rpm, 200 rpm, 300 rpm, 400 rpm, 500 rpm, and the modifier and the solvent are sufficiently mixed by strong stirring and shaking using ultrasonic waves.
Further, in S2, the pressure of the input carrier gas is 0.15 MPa to 1 MPa. Illustratively, the gas pressure of the input carrier gas is 0.15 MPa, 0.3 MPa, 0.5 MPa, 0.7 MPa, 1 MPa.
Further, in S3, the mass-to-volume ratio of the metal powder to be modified to the modification solution is 1 kg: 10-200 mL. Illustratively, the mass-to-volume ratio of the metal powder to be modified to the modification solution used is 1 kg:10 mL, 1 kg:50 mL, 1 kg:100 mL, 1 kg:100 mL, 1 kg:200 And (mL).
Further, in S4, the stirring speed of the motor is 10-300 rpm, and the heating temperature of the heating device can be 30-120 ℃. Illustratively, the motor stirring speed is 10 rpm, 50 rpm, 100 rpm, 200 rpm, 300 rpm, and the heating temperature of the heating device is 30 ℃, 60 ℃, 90 ℃, 120 ℃.
Furthermore, in S4, the working pressure of the atomizing nozzle is 0.2 MPa to 5 MPa, the atomizing angle is 45 degrees to 75 degrees, the atomizing particle size is 0.5 to 5 microns, and the spraying flow is 10 to 200 mL/min. Illustratively, the working pressure of the atomizer is 0.2 MPa, 0.5 MPa, 1 MPa, 2 MPa, 3 MPa, 4 MPa, 5 MPa; the atomization angles are 45 degrees, 60 degrees and 75 degrees; the atomized particle size was 0.5 um, 1 um, 2 um, 3 um, 4 um, 5 um; the spray flow rate was 10 mL/min, 50 mL/min, 100 mL/min, 150 mL/min, 200 mL/min.
Further, in S5, after the modified solution is sprayed, the motor is kept on stirring and heating for 10-120 min, and then the modified metal powder is taken out from the discharge port. Illustratively, the motor is kept stirring and heating for 10 min, 30 min, 60 min, 90 min, 120 min.
The invention has the beneficial effects that:
1) The metal powder is sprayed into a reaction tank body through a jet flow powder pump, then is completely fluidized in carrier gas to form well-dispersed fluidized powder, and simultaneously, a soluble modifier is dissolved in a volatile solvent and is atomized and sprayed in a liquid phase through an atomizing nozzle. The high surface energy and high activity of the fluidized powder and the atomized solution are utilized, so that the modified solution is quickly and uniformly adsorbed on the surface of the powder, the solvent is quickly volatilized, the surface modification with high process efficiency, uniform coating of the modifier and high material utilization rate can be realized, and the industrialization value is improved; the whole process has no strong friction, stirring and impact on the powder, has no damage to the surface of the metal powder, keeps the original shape of the metal powder and achieves the purpose of good surface modification of the metal powder.
2) According to the fluidized bed, through the arrangement of the jet powder pump spraying and the atomizing spray head, the metal powder is sprayed into the reaction tank body through the jet powder pump, the modified solution is continuously added through the atomizing spray head through a pipeline, the material is more conveniently added, the modified solution and the modified powder are more uniformly mixed, the coating effect is better, and the modified metal powder has obvious hydrophilic oleophobic or oleophilic hydrophobic effects.
3) The middle upper part of the reaction tank body is provided with an exhaust pipeline with a filter piece, volatile solvents are discharged through the exhaust pipeline in the metal powder modification process, the metal powder is dried more quickly, and the modification and drying integration is more suitable for industrial continuous production.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a fluidized bed in example 1 of the present invention;
FIG. 2 is a scanning electron microscope photograph of the modified copper powder of example 2 of the present invention;
FIG. 3 is a scanning electron microscope photograph of modified silver-coated copper powder of example 3 of the present invention;
FIG. 4 is a scanning electron microscope photograph of the silver powder modified in example 4 of the present invention.
In the figure: 1. a reaction tank body; 2. a fluidization plate; 3. an air intake duct; 4. a discharge port; 5. a heating device; 6. an exhaust duct; 7. an atomizing spray head; 8. a jet powder pump; 9. a stirring device; 91. a motor; 92. a stirring shaft; 93. a stirring blade.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
The present disclosure is more particularly described in the following examples that are intended as illustrations only, since various modifications and changes within the scope of the present disclosure will be apparent to those skilled in the art. Unless otherwise indicated, all parts, percentages, and ratios reported in the following examples are on a weight basis, and all reagents used in the examples are commercially available or synthesized according to conventional methods and can be used directly without further treatment, and the equipment used in the examples is commercially available.
Example 1
Referring to fig. 1, the fluidized bed in the present embodiment includes a reaction tank 1, and further includes an air inlet pipe 3 disposed at the bottom of the reaction tank 1, where the air inlet pipe 3 is used to convey a carrier gas into the reaction tank 1; the device comprises a reaction tank body 1, a jet flow powder pump 8 and an atomizing nozzle 7, wherein the reaction tank body 1 is provided with a plurality of nozzles; the atomizing nozzle 7 can atomize and spray the modified solution into the reaction tank body 1, so that the modified solution is coated on the surface of the metal powder. Aiming at the problems that in the prior art, a coating agent and a dispersing agent are conveyed to be added through a top charging hopper and a dropping funnel, the materials are inconvenient to add when the equipment height is high, the coating agent and the dispersing agent cannot be effectively dispersed without atomization, and the uniform coating of the coating agent and the dispersing agent on the surface of powder is difficult to ensure. According to the invention, by arranging the atomizing nozzle 7, the modified solution is continuously added through the atomizing nozzle 7 through a pipeline without being added through the top of the equipment, so that the addition is more convenient, the atomized modified solution is more uniformly mixed and coated with the fluidized metal powder, and the solvent is more quickly volatilized.
In some embodiments, the reactor further comprises an exhaust pipe 6 arranged at the middle upper part of the reaction tank body 1, and a filter element is arranged on the exhaust pipe 6. The middle upper part of the reaction tank body 1 is provided with the exhaust pipeline 6 with the filter piece, the volatile solvent is discharged through the exhaust pipeline 6 in the metal powder modification process, and the metal powder is dried more quickly. The filter elements may be filter cloth, screens, filters, etc.
In some embodiments, the apparatus further comprises a heating device 5, the heating device 5 is disposed on an outer surface of the reaction tank 1 and is in contact with the outer surface of the reaction tank 1, and the heating device 5 performs a heating function on the reaction tank 1 to promote volatilization of the solvent in the modification solution, so as to dry the powder.
In some embodiments, the device further comprises a stirring device 9, the stirring device 9 comprises a motor 91, a stirring shaft 92 and a stirring blade 93 which are sequentially connected, the stirring blade 93 and the stirring shaft 92 are vertically arranged, the motor 91 drives the stirring blade 93 to rotate through the stirring shaft 92, and the stirring blade 93 rotates along with the stirring shaft 92 under the driving of the motor 91, so that the fluidized metal powder and the atomized modification solution are promoted to be uniformly mixed in the modification process.
In some embodiments, the reactor further comprises a fluidization plate 2 and a discharge port 4, the discharge port 4 is arranged at the bottom of the reaction tank body 1, and the fluidization plate 2 is arranged between the stirring device 9 and the discharge port 4. After the metal powder is coated, the metal powder is discharged from the bottom of the tank body and the discharge hole 4, and the fluidized bed of the invention achieves the purposes of more convenient use, convenient use of modified solution for uniformly coating the surface of the metal powder and dry modification.
Example 2
S1, weighing 8 g mercaptan, dissolving the mercaptan in 300 ml ethanol to prepare a modified solution, stirring the modified solution strongly at room temperature for 30 min, pouring the solution into a container, and connecting the container with an atomizing nozzle 7 of a reaction tank body 1 through a pipe.
S2, introducing carrier gas into the modifying device tank body from the bottom through an air inlet pipeline 3, and starting the fluidized bed;
s3, spraying 3 kg copper powder into the modification reaction tank body 1 through a jet powder pump 8, and keeping the sprayed copper powder in a fluidized state under the action of a fluidized bed;
s4, starting a stirring motor 91, setting the stirring speed to be 240 r/min, setting the heating temperature of the heating device 5 to be 60 ℃, and starting an atomizing nozzle 7 to spray the modification solution;
s5, after the modified solution is sprayed, keeping stirring, heating and fluidizing for 30 min to ensure that the powder is modified more uniformly, the solvent in the modified solution is completely volatilized, the modified powder is completely dried, then, the motor 91, the heating device 5 and the fluidized bed are stopped, the modified copper powder product is taken out from the discharge port 4, and the scanning electron microscope picture of the modified copper powder product is shown as the attached figure 2.
Example 3
S1, weighing 10 g silane coupling agent KH560, dissolving in 100 ml water to prepare a modified solution, stirring the modified solution strongly at room temperature for 30 min, pouring the solution into a container, and connecting the container with an atomizing nozzle 7 of a reaction tank body 1 through a pipe.
S2, introducing carrier gas into the reaction tank body 1 from the bottom through the gas inlet pipeline 3, and starting the fluidized bed;
s3, spraying 2 kg silver-coated copper powder into the modification reaction tank body 1 through a jet flow powder pump 8, and keeping the powder in a fluidized state under the action of a fluidized bed after spraying the silver-coated copper powder;
s4, starting a stirring motor 91, setting the stirring speed to be 120 r/min, setting the heating temperature of the heating device 5 to be 90 ℃, and starting an atomizing nozzle 7 to spray the modified solution;
s5, after the modified solution is sprayed, keeping stirring, heating and fluidizing for 60 min to enable the powder to be modified more uniformly, completely volatilizing the solvent in the modified solution, completely drying the modified powder, then stopping the motor 91, the heating device 5 and the fluidized bed, taking out the modified silver-coated copper powder product from the discharge port 4, and taking a scanning electron microscope picture of the modified silver-coated copper powder product as shown in the attached figure 3.
Example 4
S1, weighing 10 g sorbitan trioleate, dissolving the 10 g sorbitan trioleate in 300 ml ethanol to prepare a modified solution, stirring the modified solution strongly at room temperature for 30 min, pouring the solution into a container, and connecting the container with an atomizing nozzle 7 of a reaction tank body 1 through a pipe.
S2, introducing carrier gas into the reaction tank body 1 from the bottom through the gas inlet pipeline 3, and starting the fluidized bed;
s3, spraying 3 kg silver powder into the modification reaction tank body 1 through a jet powder pump 8, and keeping the sprayed powder in a fluidized state under the action of a fluidized bed;
s4, starting a stirring motor 91, setting the stirring speed to be 180 r/min, setting the heating temperature of the heating device 5 to be 60 ℃, and starting an atomizing nozzle 7 to spray the modified solution;
s5, after the modified solution is sprayed, keeping stirring, heating and fluidizing for 30 min to ensure that the powder is modified more uniformly, the solvent in the modified solution is completely volatilized, the modified powder is completely dried, then, the motor 91, the heating device 5 and the fluidized bed are stopped, the modified silver powder product is taken out from the discharge hole 4, and the scanning electron microscope picture of the modified silver powder product is shown in figure 4.
The above embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention is not limited thereto, and any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. A fluidized bed comprising a reactor vessel (1), characterized in that it further comprises:
the exhaust pipeline (6) is arranged at the middle upper part of the reaction tank body (1), and a filtering piece is arranged on the exhaust pipeline (6);
the gas inlet pipeline (3) is arranged at the middle lower part of the reaction tank body (1), and the gas inlet pipeline (3) is used for conveying carrier gas into the reaction tank body (1);
set up in the two device that spout of upper portion in the retort body (1), two devices that spout include efflux powder pump (8) and atomizer (7), efflux powder pump (8) are used for spouting into metal powder in the retort body (1), atomizer (7) can be spouted the modified solution atomizing into inside the retort body (1), make the modified solution cladding in metal powder surface.
2. A fluid bed according to claim 1, characterized in that the double injection means are arranged on top of the reactor vessel (1).
3. The fluidized bed according to claim 2, further comprising a heating device (5), wherein the heating device (5) is disposed on the outer surface of the reactor body (1) and is abutted against the outer surface of the reactor body (1), the fluidized bed further comprises a stirring device (9), the stirring device (9) comprises a motor (91), a stirring shaft (92) and a stirring blade (93) which are connected in sequence, the stirring blade (93) and the stirring shaft (92) are vertically disposed, and the motor (91) drives the stirring blade (93) to rotate through the stirring shaft (92); the fluidized bed further comprises a fluidization plate (2) and a discharge hole (4), wherein the discharge hole (4) is formed in the bottom of the reaction tank body (1), and the fluidization plate (2) is arranged between the stirring device (9) and the discharge hole (4).
4. A fluid bed process for the production of clad metal material according to any one of claims 1 to 3, comprising the steps of:
s1, preparing a modifying agent and a solvent into a modified solution;
s2, starting the fluidized bed, and introducing carrier gas into the reaction tank body (1) through the gas inlet pipeline (3);
s3, spraying the metal powder to be modified into the reaction tank body (1) through a jet flow powder pump (8), and keeping the sprayed metal powder in a fluidized state under the action of a fluidized bed;
s4, starting a motor (91) and a heating device (5), starting an atomizing nozzle (7), spraying a modified solution atomized by the atomizing nozzle (7), and coating the metal powder to be modified with the modified solution;
s5, taking out the modified metal powder from the discharge hole (4).
5. The method for preparing the coated metal material in the fluidized bed according to claim 4, wherein in the step S1, the solvent is one or more selected from water, ethanol, acetone and dichloromethane; the modifier is selected from one or more of mercaptan, amino silicone oil KL-08, dibenzylidene sorbitol, ricinoleic acid, oleic acid, linoleic acid, polyvinylpyrrolidone, span series surfactants and tween series surfactants, and the concentration of the prepared modified solution is 10-300 g/L.
6. The method for preparing the coated metal material by the fluidized bed according to claim 4, wherein in the step S1, after the preparation of the modification solution, the modification solution is mixed at room temperature and is intensively stirred by a stirring magneton or a stirring paddle at a rotating speed of 100-500 rpm for 10-30 min to be fully and uniformly stirred, and then the modification solution is mixed by ultrasonic oscillation for 5-30 min.
7. The method for fluidized-bed preparation of a clad metal material as claimed in claim 4, wherein in S2, the gas pressure of the input carrier gas is 0.15 MPa to 1 MPa.
8. The method for preparing the coated metal material by the fluidized bed according to claim 4, wherein in S3, the mass-to-volume ratio of the metal powder to be modified to the modification solution is 1 kg: 10-200 mL.
9. The method for preparing the coated metal material by the fluidized bed according to claim 4, wherein in S4, the stirring speed of the motor (91) is 10-300 rpm, the heating temperature of the heating device (5) is 30-120 ℃, the working pressure of the atomizing nozzle (7) is 0.2-5 MPa, the atomizing angle is 45-75 degrees, the atomizing particle size is 0.5-5 μm, and the spraying flow rate is 10-200 mL/min.
10. The method for preparing the coated metal material by the fluidized bed according to claim 4, wherein in S5, after the modified solution is sprayed, the motor (91) is kept stirring and the heating device (5) is kept heating for 10-120 min, and then the modified metal powder is taken out from the discharge port (4).
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107774219A (en) * | 2017-11-17 | 2018-03-09 | 安徽赛立科硅材料有限公司 | A kind of surface modification device of superfine powder |
| CN109585797A (en) * | 2017-09-29 | 2019-04-05 | 横店集团东磁股份有限公司 | A kind of coating modification electrode material and preparation method thereof |
| CN111769273A (en) * | 2020-08-19 | 2020-10-13 | 山东海科创新研究院有限公司 | Coating method of nickel cobalt lithium manganate ternary positive electrode material |
| CN113564561A (en) * | 2020-04-29 | 2021-10-29 | 清华大学 | Powder particle coating equipment based on fluidized bed and chemical vapor deposition technology |
| CN114950283A (en) * | 2022-06-24 | 2022-08-30 | 洛阳融惠化工科技有限公司 | Fluidized reaction system for coating surfaces of ultrafine particles and using method thereof |
-
2023
- 2023-01-03 CN CN202310001198.4A patent/CN115672170A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109585797A (en) * | 2017-09-29 | 2019-04-05 | 横店集团东磁股份有限公司 | A kind of coating modification electrode material and preparation method thereof |
| CN107774219A (en) * | 2017-11-17 | 2018-03-09 | 安徽赛立科硅材料有限公司 | A kind of surface modification device of superfine powder |
| CN113564561A (en) * | 2020-04-29 | 2021-10-29 | 清华大学 | Powder particle coating equipment based on fluidized bed and chemical vapor deposition technology |
| CN111769273A (en) * | 2020-08-19 | 2020-10-13 | 山东海科创新研究院有限公司 | Coating method of nickel cobalt lithium manganate ternary positive electrode material |
| CN114950283A (en) * | 2022-06-24 | 2022-08-30 | 洛阳融惠化工科技有限公司 | Fluidized reaction system for coating surfaces of ultrafine particles and using method thereof |
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Application publication date: 20230203 |