Diamond micro-powder gradient grading method

Abstract

The invention belongs to the technical field of diamond micro-powder grading, and particularly relates to a diamond micro-powder gradient grading method which comprises the following steps: (1) crushing and shaping, (2) screening, (3) purifying, (4) drying, (5) primary grading, (6) re-grading, and (7) classifying and filling. By means of screening, dust and scraps carried by the diamond micro-powder can be vibrated and screened conveniently, the purity can be improved conveniently, by means of a plurality of filter sieves, the diamond micro-powder can be subjected to simple grading operation conveniently, a worker can operate and use the diamond micro-powder conveniently, by means of purification, the purity of the diamond micro-powder can be improved conveniently, and by means of drying, the quality of the diamond micro-powder can be improved conveniently. According to the diamond micro-powder processing device, the purified diamond micro-powder can be conveniently dried, condensation of the diamond micro-powder is avoided, through primary grading and secondary grading, multi-stage grading is conveniently conducted on the diamond micro-powder according to different use requirements, and through classification and filling, classified filling and labeling are conveniently conducted on the diamond micro-powder obtained through different types of screening.

Description

Technical Field

[0001] The present invention belongs to the technical field of diamond micropowder classification, and particularly relates to a method for gradient classification of diamond micropowder. Background Art

[0002] Diamond micropowder is a new type of superhard and ultra-fine abrasive formed by special processing of artificial diamond single crystals. Single crystal diamond micropowder is produced by a special process method of superhard materials from artificial diamond single crystal abrasive grains by static pressure, through crushing and shaping processes.

[0003] After the production of diamond micropowder, in order to facilitate its use for different requirements, classification is needed. Therefore, a method for gradient classification of diamond micropowder is specifically proposed. Summary of the Invention

[0004] To solve the problems raised in the above background art, the present invention provides a method for gradient classification of diamond micropowder, which has the characteristics of convenient operation and multiple classification.

[0005] To achieve the above object, the present invention provides the following technical solution: A method for gradient classification of diamond micropowder, comprising the following steps:

[0006] (1) Crushing and shaping: Diamond particles are obtained by crushing diamond, and diamond micropowder with uniform particle size is obtained by shaping the diamond particles.

[0007] (2) Screening: The diamond micropowder is placed in a screening frame, and the screening frame is vibrated by a vibrator to perform vibrating screening on the diamond micropowder. The debris carried in the diamond micropowder is filtered and screened. By installing multiple filter screens, simple classification of the diamond micropowder can be carried out.

[0008] (3) Purification: Weigh a certain weight of diamond micropowder, put it into an acid-resistant and high-temperature-resistant container, add an appropriate dose of perchloric acid (the ratio of perchloric acid to water is 1:2), place the container on an industrial electric furnace for heating. As the temperature rises, the reaction gradually becomes intense. After the reaction completely stops, stop heating and remove the container from the heat source. After the material cools to room temperature, pour out the upper layer of waste acid solution.

[0009] (4) Drying: Take out the diamond micropowder obtained by purification and place it in an industrial electric furnace for drying to obtain the diamond micropowder.

[0010] (5) Preliminary classification: The diamond micropowder is classified by the natural precipitation method, and the coarser particles in the diamond micropowder are processed. Since the particles are heavier and the sedimentation time is short, the sedimentation distance of particles with similar particle sizes can be lengthened, and fine classification of diamond micropowder products with similar specifications can be carried out. The sedimentation time is about 15 minutes.

[0011] (6) Re - classification: The diamond micropowder is re - classified by centrifugal classification method. The diamond micropowder after primary classification is placed in a centrifugal pump, water and dispersant are added, and the centrifugal force is adjusted by controlling the rotation speed. By controlling the centrifugation time, the diamond particles required to precipitate in the solution are obtained, and thus the particles can be separated by size successively;

[0012] (7) Classification and filling: The diamond particles obtained by screening, the diamond particles obtained by primary classification, and the diamond particles obtained by re - classification are classified, stored, marked, and then checked and used.

[0013] Preferably, in step (2), when screening the diamond micropowder, the dust generated during the screening of the diamond micropowder is extracted by an air extraction pump. A storage bag is arranged at the input end of the air extraction pump to collect the dust and prevent the dust from entering the air extraction pump.

[0014] Preferably, in step (4), the purified diamond micropowder is placed in a container and dried by heating. The drying temperature is 220 - 250 degrees Celsius, and the drying time is 2 - 3 hours. During drying, the placed diamond micropowder is stirred by a stirring component to make the drying more uniform.

[0015] Preferably, in step (7), the diamond micropowder with different particle sizes obtained by different classifications is filled, and labeling operations are carried out for different filling bottles.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. In the present invention, through screening, it is convenient to perform vibration screening on the dust and debris carried by the diamond micropowder, which is convenient for improving the purity. Through multiple filter screens, it is convenient to perform simple classification operations on the diamond micropowder, which is convenient for the staff to operate and use. By setting purification, it is convenient to improve the purity of the diamond micropowder and facilitate its use according to requirements. By setting drying, it is convenient to dry the purified diamond micropowder and prevent the diamond micropowder from condensing. Through primary classification and re - classification, it is convenient to perform multi - level classification on the diamond micropowder according to different usage requirements, which is convenient for operation. Through classification and filling, it is convenient to classify, fill, and label the diamond micropowder obtained by different screenings, which is convenient for distinction and use. Specific embodiments

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0019] Example 1

[0020] The present invention provides the following technical solution: a method for gradient classification of diamond micropowder, comprising the following steps,

[0021] (1) Crushing and shaping: Diamond particles are obtained by crushing diamonds, and diamond micropowder with uniform particle size is obtained by shaping the diamond particles;

[0022] (2) Screening: The diamond micropowder is placed in a screening frame, and the screening frame is driven by a vibrator to vibrate, so as to perform vibratory screening on the diamond micropowder, filter and screen the debris carried in the diamond micropowder, and by installing multiple filter screens, the diamond micropowder can be simply classified;

[0023] (3) Purification: Weigh a certain weight of diamond micropowder, put it into an acid-resistant and high-temperature-resistant container, add an appropriate dose of perchloric acid (the ratio of perchloric acid to water is 1:2), place the container on an industrial electric furnace for heating. As the temperature rises, the reaction gradually becomes intense. After the reaction completely stops, stop heating and remove the container from the heat source. After the material cools to room temperature, pour out the upper layer of waste acid solution;

[0024] (4) Drying: Take out the diamond micropowder obtained by purification and place it in an industrial electric furnace for drying to obtain diamond micropowder;

[0025] (5) Primary classification: The diamond micropowder is classified by the natural precipitation method, and the coarser particles in the diamond micropowder are processed. Since the particles are heavier and the sedimentation time is short, the sedimentation distance of particles with similar particle sizes can be lengthened, and the fine classification of diamond micropowder products with similar specifications is carried out. The sedimentation time is about 15 minutes;

[0026] (6) Reclassification: The diamond micropowder is reclassified by the centrifugal classification method. The diamond micropowder after the primary classification is placed in a centrifugal pump, water and a dispersant are added, and the centrifugal force is adjusted by controlling the rotation speed. By controlling the centrifugation time, the diamond particles required for precipitation in the solution can be obtained, so that the particles can be separated by size successively;

[0027] (7) Classification and filling: The diamond particles obtained by screening, the diamond particles obtained by primary classification, and the diamond particles obtained by reclassification are classified, stored and marked for viewing and use.

[0028] Specifically, in step (2), when screening the diamond micropowder, the dust generated by screening the diamond micropowder is extracted by an air extraction pump. A storage bag is arranged at the input end of the air extraction pump to collect the dust and prevent the dust from entering the air extraction pump.

[0029] Specifically, in step (4), the purified diamond micropowder is placed in a container and dried by heating. The drying temperature is 220-250 °C, and the drying time is 2-3 hours. During drying, the placed diamond micropowder is stirred by a stirring component to make the drying more uniform.

[0030] Specifically, in step (7), the diamond micropowders with different particle sizes obtained by different classifications are filled, and labeling operations are carried out for different filling bottles.

[0031] The working principle and usage process of the present invention: The present invention places diamond raw materials in a crusher for crushing. After crushing, the diamond particles are placed in a ball mill for shaping to obtain uniform diamond particles. The diamond particles are placed in an acid-resistant and high-temperature-resistant container, perchloric acid is added, and a heating reaction is carried out to purify the diamond particles. After purification, the diamond micropowder is placed in a container and heated by an electric furnace to dry the diamond micropowder. Stirring is carried out by a stirring component to make the drying of the diamond micropowder more uniform. The dried diamond micropowder is initially classified by the natural sedimentation method. After classification, the diamond micropowder is re-classified by the centrifugal classification method. The diamond micropowders obtained by different classifications are classified, placed, filled, and marked for easy distinction and use.

[0032] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A diamond powder gradient classification method, comprising the following steps, characterized in that: (1) Crushing and shaping: Diamond particles are obtained by crushing diamonds, and diamond micropowder with uniform particle size is obtained by shaping the diamond particles; (2) Screening: Place the diamond powder in a screening frame, drive the screening frame to vibrate through a vibrator, vibrate and screen the diamond powder, and filter and screen the debris carried in the diamond powder. By installing multiple filter screens, the diamond powder can be simply classified; (3) Purification: Weigh a certain weight of diamond powder, put it into an acid-resistant and high-temperature resistant container, add an appropriate amount of perchloric acid (the ratio of perchloric acid to water is 1:2), and place the container on an industrial electric furnace for heating. As the temperature rises, the reaction becomes increasingly intense. After the reaction stops completely, stop heating and remove the container from the heat source. After the material cools to room temperature, pour out the waste acid liquid on the upper layer; (4) Drying: taking out the purified diamond powder and placing it in an industrial electric furnace for drying to obtain diamond powder; (5) Preliminary classification: Diamond powder is classified by natural sedimentation method, and the coarser particles in the diamond powder are processed. Since the particles are heavy and the sedimentation time is short, the sedimentation distance of particles with similar particle sizes can be lengthened. For the fine classification of diamond powder products with similar specifications, the sedimentation time is about 15 minutes; (6) Reclassification: The diamond powder is reclassified by centrifugal classification. The diamond powder after the initial classification is placed in a centrifugal pump, and water and dispersant are added. The centrifugal force is adjusted by controlling the rotation speed. The centrifugal time is controlled so that the required diamond particles are precipitated in the solution. In this way, the particles can be separated by size one by one. (7) Classification and filling: The diamond particles obtained by screening, the diamond particles obtained by primary classification and the diamond particles obtained by reclassification are classified, stored and marked for inspection and use.

2. A diamond powder gradient classification method according to claim 1, characterized in that: In the step (2), when the diamond powder is screened, the dust generated by the diamond powder screening is extracted and processed by a vacuum pump, and a storage bag is provided at the input end of the vacuum pump to collect the dust to prevent the dust from entering the vacuum pump.

3. A diamond powder gradient classification method according to claim 1, characterized in that: The step (4) is to place the purified diamond micropowder in a container and dry the diamond micropowder by heating. The drying temperature is 220-250 degrees Celsius and the drying time is 2-3 hours. During the drying process, the placed diamond micropowder is stirred by a stirring component to make the drying more uniform.

4. A diamond powder gradient classification method according to claim 1, characterized in that: In the step (7), the diamond micropowders of different particle sizes obtained through different classifications are filled, and labeling operations are performed on different filling bottles.