Method for preparing diamond micro-powder by wet method

Abstract

The invention belongs to the technical field of diamond micro-powder, and particularly relates to a method for preparing diamond micro-powder by a wet process, which comprises the following steps: step 1, raw material selection: screening diamond powder in a large scale to sort out diamond powder with proper size; the selected diamond powder is subjected to crushing and shaping treatment in sequence and then is further screened, the diamond micro-powder with the proper size is selected, the selected diamond micro-powder is subjected to acid pickling and impurity removal, and then the diamond micro-powder is cleaned and stored. The diamond micro-powder is subjected to acid pickling treatment, screened micro-powder impurities can be efficiently treated, the pure effect of the diamond micro-powder is guaranteed, diamond micro-powder magnetic metal can be bonded and mixed by arranging metal magnetic bonding agent polyhydric alcohol and a chemical plating solution, the preparation simplicity and convenience can be guaranteed by adopting a wet preparation process, and the preparation cost is reduced. And meanwhile, the overall strength of the manufactured diamond micro-powder is guaranteed.

Description

Technical Field

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

[0002] Diamond micropowder is a new type of superhard and ultrafine abrasive formed by special process treatment of synthetic diamond single crystals. It is an ideal raw material for grinding and polishing high-hardness materials such as cemented carbide, ceramics, gemstones, and optical glass. Diamond products are tools and components made from diamond materials and are widely used. Diamond micropowder and products are widely used in departments such as automotive, machinery, electronics, aviation, aerospace, optical instruments, glass, ceramics, petroleum, and geology. With the continuous development of technology and products, the application fields of diamond micropowder and products are constantly expanding.

[0003] However, in the preparation of traditional diamond micropowder, there are often problems such as cumbersome preparation methods and steps, and poor strength of the prepared diamond micropowder. Summary of the Invention

[0004] To solve the problems raised in the above background art, the present invention provides a method for preparing diamond micropowder by a wet method, which has the characteristics of relatively simple preparation steps and high preparation strength.

[0005] To achieve the above object, the present invention provides the following technical solution: A method for preparing diamond micropowder by a wet method, comprising the following steps:

[0006] Step 1, raw material selection: screening out diamond powder of appropriate size from a large batch of diamond powder;

[0007] Step 2, raw material treatment: after the selected diamond powder is successively subjected to crushing and shaping treatments, further screening is carried out to select diamond micropowder of appropriate size, and the selected diamond micropowder is subjected to pickling for impurity removal, and then washed and stored;

[0008] Step 3, mixture selection: selecting appropriate amounts of metal magnetic binder, polyol, and electroless plating solution;

[0009] Step 4, stirring and mixing: pouring the stored diamond micropowder, metal magnetic binder, polyol, and electroless plating solution into the internal part of a sealed stirring and mixing device according to an appropriate mass ratio;

[0010] Step 5, micropowder treatment: further screening and filtering the mixed micropowder, and washing the selected appropriate micropowder;

[0011] Step 6, drying and storage: drying the washed micropowder, and finally storing and collecting the micropowder.

[0012] Preferably, the size of the raw materials screened in the raw material selection is between 100 microns and 500 microns.

[0013] Preferably, in the raw material treatment, diamond crushers and diamond shaping machines are required for crushing and shaping operations. After shaping, the diamond raw materials need to be screened for a second time, and the size of the screened raw materials is between 30 microns and 80 microns.

[0014] Preferably, the metal magnetic binder is a mixture of iron and cobalt alloys, and the polyol is one or a mixture of glycerol, butanetriol, pentaerythritol, and diethylene glycol.

[0015] Preferably, the size of the raw material fine powder screened in the fine powder treatment is between 40 microns and 100 microns.

[0016] Preferably, the drying method proposed in the drying and storage is to use a vacuum drying oven for drying treatment.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, by pickling the diamond fine powder, the impurities in the screened fine powder can be efficiently treated to ensure the purity of the diamond fine powder. By setting the metal magnetic binder polyol and electroless plating solution, the magnetic metal of the diamond fine powder can be bonded and mixed. With the wet preparation process, the simplicity of the preparation can be ensured, and at the same time, the overall strength after the production of the diamond fine powder can be ensured. Detailed Embodiments

[0019] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0020] Embodiment

[0021] The present invention provides the following technical solutions: A method for preparing diamond fine powder by a wet method, comprising the following steps:

[0022] Step 1, raw material selection: Screening out suitable-sized diamond powder from a large batch of diamond powder through screening.

[0023] Step 2, raw material treatment: Sequentially passing the selected diamond powder through crushing and shaping treatments, further screening to select suitable-sized diamond fine powder, pickling and removing impurities from the selected diamond fine powder, and then cleaning and storing.

[0024] Step 3, Selection of mixture: Select appropriate amounts of metal magnetic binder, polyol, and electroless plating solution;

[0025] Step 4, Stirring and mixing: Pour the stored diamond micropowder, metal magnetic binder, polyol, and electroless plating solution into the internal of a sealed stirring and mixing device according to an appropriate mass ratio;

[0026] Step 5, Micropowder treatment: Further screen and filter the mixed micropowder, and wash the selected appropriate micropowder;

[0027] Step 6, Drying and storage: Process the washed micropowder by drying, and finally store and collect the micropowder.

[0028] Specifically, the size of the raw materials screened out in the raw material selection is between 100 microns and 500 microns.

[0029] Specifically, in the raw material treatment, a diamond crusher and a diamond shaper are required for the crushing and shaping operations. The shaped diamond raw materials need to be secondarily screened, and the size of the screened raw materials is between 30 microns and 80 microns.

[0030] Specifically, the metal magnetic binder is a mixture of iron and cobalt alloys, and the polyol is one or a mixture of glycerol, butanetriol, pentaerythritol, and diglycol.

[0031] Specifically, the size of the raw material micropowder screened out in the micropowder treatment is between 40 microns and 100 microns.

[0032] Specifically, the drying method mentioned in the drying and storage is to use a vacuum drying oven for drying treatment.

[0033] The working principle and usage process of the present invention:

[0034] Step 1, Raw material selection: Screen out diamond powder of appropriate size from a large quantity of diamond powder;

[0035] Step 2, Raw material treatment: After the selected diamond powder is successively subjected to crushing and shaping treatments, further screen it to select diamond micropowder of appropriate size, and perform acid washing to remove impurities on the selected diamond micropowder, and then wash and store it;

[0036] Step 3, Selection of mixture: Select appropriate amounts of metal magnetic binder, polyol, and electroless plating solution;

[0037] Step 4, Stirring and mixing: Pour the stored diamond micropowder, metal magnetic binder, polyol, and electroless plating solution into the internal of a sealed stirring and mixing device according to an appropriate mass ratio;

[0038] Step Five, Micropowder Processing: Further screen and filter the mixed micropowder, and clean the suitable micropowder selected by screening.

[0039] Step Six, Drying and Storage: Perform drying processing on the cleaned micropowder, and finally store and collect the micropowder.

[0040] 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 recorded 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 within the protection scope of the present invention.

Claims

1. A method for preparing diamond micropowder by a wet process, comprising the following steps, characterized in that: Step 1, raw material selection: Screen diamond powder by large batch to select diamond powder of appropriate size; Step 2, raw material treatment: After the selected diamond powder is successively subjected to crushing and shaping treatments, it is further screened to select diamond micropowder of appropriate size, and the selected diamond micropowder is pickled to remove impurities, and then cleaned and stored; Step 3, mixture selection: Select appropriate amounts of metal magnetic binder, polyol and electroless plating solution; Step 4, stirring and mixing: Pour the stored diamond micropowder, metal magnetic binder, polyol and electroless plating solution into the internal part of a sealed stirring and mixing device according to an appropriate mass ratio; Step 5, micropowder treatment: Further screen and filter the mixed micropowder, and clean the selected appropriate micropowder; Step 6, drying and storage: Perform drying processing on the cleaned micropowder, and finally store and collect the micropowder.

2. The method for wet preparation of diamond micropowder according to claim 1, characterized in that: The size of the raw materials screened in the raw material selection is between 100 microns and 500 microns.

3. A method for wet-preparing diamond micropowder according to claim 1, characterized in that: In the raw material treatment, diamond crushers and diamond shaping machines are required for the crushing and shaping operations. The shaped diamond raw materials need to be secondarily screened, and the size of the screened raw materials is between 30 microns and 80 microns.

4. A method for wet preparation of diamond micropowder according to claim 1, characterized in that: The metal magnetic binder is a mixture of iron and cobalt alloys, and the polyol is one or more mixtures of glycerol, butanetriol, pentaerythritol and diglycol.

5. The method for wet preparation of diamond micropowder according to claim 1, characterized in that: The size of the raw material micropowder screened in the micropowder treatment is between 40 microns and 100 microns.

6. A method for wet-preparing diamond micropowder according to claim 1, characterized in that: The drying means proposed in the drying and storage is to perform drying treatment using a vacuum drying oven.